Catalog

Shenzhen Jiwei Automations Ltd.,
Specializing in Level Meters/Switches
Vibrating Level Switch
1| www.jiweimeter.com
Vibrating level switch uses piezoelectric devices to achieve vibration drive and detection. It is designed with state-of-the-art
technique, which upgrades the product performance to an advanced level and has higher reliability in counterparts. When the
vibrating probe contacts with the measured material, the vibration amplitude and the frequency of the probe will obviously decrease,
also, the reduction is detected by the piezoelectric devices and will be converted into a switching signal by intelligent circuit.
Depending on different chemical property and physical form of measured medium, different series of vibrating level switch can be
chosen.
In order to meet a variety of application conditions, our vibration level switches are divided into the following four series:
Tube-11 Vibrating Rod Level Switch:
The first made-in-China vibration rod level switch designed with double vibration elements, is mainly used to measure the level of
granular and coarse-grained bulk solids with the lowest measurable density of 0.02g/cm3
.
Fork-11 Tuning Fork Level switch:
By increasing the area of fork body, it is particularly suitable for the level measurement of powders and fine-grained bulk solids with
the lowest measurable density of 0.008 g/cm3
.
Ring-11 Liquid Level Switch:
With only 40mm length of the fork body, it is particularly aimed to measure the level of liquid with the lowest measurable density of 0.5
g/cm3
, and can be mounted in vessels, canisters and tanks, and also in bypass pipelines.
Ring-21 Compact Liquid level switch:
Designed in compact and lightweight form, It is mainly applied in occasions that require low-cost price, and in non hazardous areas. It
is particularly suitable to be installed in pipelines and constricted spaces.
We firmly believe that details determine the quality and reliability
of our products, and we have been paying highly attention to tiny
details in technology and process while in R&D and production.
Compared to the same products of other rival brands, our vibrating
level switches have the following advantages:
 Highly sensitivity with measurable medium, the density can
reach as low as 0.008 g/cm3
;
 Well adapted to medium with changing humidity and dielectric
constant;
 With high redundancy for hanging and adhesion, has high
reliability to measure viscous and easy hanging medium;
 Small probe, particularly suitable for pipelines measurement;
 Process temperature can reach up to 250℃, which is
industry-leading;
 Vibrating probe is made of strong anti-corrosive materials, such
as 316L;
 Got Ex-approval/Intrinsically Safe certification & IP66/67 ingress
protection;
 Strong self-diagnostic function can recognize false position
accurately.

http://www.jiweimeter.comVibrating Level Switch
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Shenzhen Jiwei Automations Ltd.,|2
▼Tube-11 Vibrating Rod Level Switch
Tube-11, is the first made-in-China vibration rod level
switch that designed with double vibration elements and with
the lowest measurable density of 0.02g/cm3
, is mainly used to
measure the level of granular and coarse-grained bulk solids,
such as PVC, sodium hydroxide, lime, cement, sand, soil, coal,
dust, flour, sugar, salt, grain, bean, etc.
The probe of Tube-11 vibrating rod level switch is
designed with double vibration elements, the inner vibration
element nests with the outer vibration element. By activating
both the inner and outer vibration elements to work at the same
resonance frequency, this makes the switch has high reliability
and high detection sensitivity with the lowest measurable
density of 0.02g/cm3
. The product uses piezoelectric devices to
achieve vibration drive and detection, resulting in resonance of
both inner and outer vibration elements at completely
consistent resonance frequency. When the vibrating rod
contacts with measured material, the resonant frequency of
outer vibration element will change, thereby destroying the
resonance conditions of both the inner and outer vibration
elements makes the vibration amplitude of the probe will be
obviously deceased, which also decreases the amplitude of
output signal from the piezoelectric detection device. This
reduction is detected by the integrated electronics module and
converted into a output switching signal.
 Particularly suitable to measure the outcome silos of the
mixture of CaSO4 and CaSO3 in semi-dry desulfurization
reaction unit at coal power plant.
 High redundancy for hanging and adhesion are benefited
from double rods design, well solves the adhesion
problem from mixture of CaSO4 and CaSO3.
 Due to unstable changing of the dielectric constant
caused by humidity changing from the mixture of CaSO3
and CaSO4, the RF Admittance Level Switch cannot be
reliably applied to such working condition, thus, the
vibrating level switch has nothing to do with dielectric
constant and is able to achieve highly reliable
measurement.
 Well used at dust bin of desulfurization and silo of
regeneration tower at power plant, where the
temperature of active coke is up to 180 ℃, but it is still
less than the switch’s highest process temperature --
250 ℃.
 Widely used in combustion systems bunker at power
plant, in which the sawdust and straw density is only
about 0.1g /cm3, but for other general level switches, it is
difficult to reliably measure the level due to the low
density. However, Tube-11 with the lowest measurable
density of 0.02 g/cm3
is perfect for this kind of occasion.
 Well installed in dust bag and ash conveying system of
ash pump and storehouse at power plant. Tube-11, with
only 150mm length of the probe, significantly reduces the
probe’s impacted area by heavy ashes, and greatly
avoids the probe’s damage caused by material impact.
 Used to measure the level of coal ash collecting device
(fly ash silo).
 Used to measure the level of sintered ash silo at smelter
plant.
 Used in PVC granule storage silos, and packaging line
silo monitoring at chemical plant.
 Used in the measurement of cement raw material hoist
hopper at cement plant.
Applications
Measuring principle
Overview

 First made-in-China double-rod probe designed with inner and outer vibration elements.
 With high redundancy for hanging and adhesion, has high reliability to measure viscous medium and it is easy to adapt to
hanging medium.
 High sensitivity with the lowest medium density of 0.02g/cm3
.
 Process temperature can reach up to 250℃, which is industry-leading.
 Strong self-diagnostic function, can detect false position accurately.
 Easy for installation and no calibration required.
 Made of strong anti-corrosive materials，such as 316L, 318 S13.
Applicable materials
Solid Granular or powder①
Density ＞ 0.02g/cm3
Probe data
Vibration frequency ~360Hz
Probe length 125mm
Probe diameter 16mm
Switching delay
When immersed 0.5S
When laid bare 1S
Power
Relay output 20～250VAC/20～72VDC
Two-wire 10～36VDC
Power consumption AC1-8VA/DC1.5W
Output variable
Relay output DPDT,5A/253VAC/24VDC
Two-wire output 8mA/16mA,Alarm<2.3mA
Ambient conditions
Process pressure -1～16bar
Process temperature -50℃～250℃
Ambient temperature -40℃～80℃
Storage and transport temperature -40℃～80℃
Electrical protections
Relay output Category III, class I
Two-wire Category III, class II
Approvals
Protection rating IP66/67
Explosion-proof EX d IIC T6 ;EX ia IIC T6
Materials optional
Housing Plastic, Aluminum, Stainless steel
Ground terminal 316L
Process fitting 316L
Vibrating rod 316L, 318 S13
Process seal Klingersil C-4400
Notes：①The Max particle size 20mm, on the basis of this requires medium density <0.05g/cm3
.
Technical data
Features

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Tube-11-Thread
Tube-11-Flange
Dimensional drawings

Relay output Two-wire output
①：Power terminal ①： Power terminal / output (8/16mA)
②③：Relay output (DPDT)
Notes:
 When install vertically, install from a distance of d/6 from the vessel wall.
 When install horizontally, install in approx.20°inclined to the vessel bottom to avoid buildup.
 Avoid installing in inlet and outlet points.
Approvals
N For EX-free area
I Intrinsically Safe(Exia IIC T6)
D Flame-proof(Exd IIC T6)
C -50～150℃
H -50～250℃
Process temperature
Process fitting
TG Thread G11/2''A
TN Thread NPT 1½ ''A
TH Thread G1''A
TM Thread NPT 1'' A
FA Flange DN50 PN40
FB Flange DN80 PN40
FC Flange DN50 PN16
FD Flange DN80 PN16
XX Customized design
Electronics
R Relay（20～70V DC/20～253V AC）①
W Two-wire 8/16mA（12～36V DC）
Housing/Protection P Plastic/IP66/67
A Aluminum/IP66/67（0.2bar）
Cable entry M M20*1.5
N 1/2NPT
Intruding depth
S Standard(168mm)
L Lengthened(178mm≤L≤6000mm)
Notes: If ① is selected, the options of “I”of the certificate are not available.
Tube-11
Order information
Installation diagrams
Circuit diagrams

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▼Fork-11 Tuning Fork Level Switch
Fork-11 Tuning Fork Level Switch is mainly used to
measure the level of powders and fine-grained bulk solids,
such as sand, fine chemicals, flour, salt and other similar
materials, which is particularly suitable for ultra low-density
materials with the lowest measurable density of 0.008g/cm3
.
This switch has wide adaptability and high reliability.
Designed on the basis of tuning fork, Fork-11 uses
piezoelectric devices to achieve vibration drive and detection.
The fork vibrates freely under the resonance frequency when
it is not covered by material, the vibration amplitude of the fork
will obviously decrease when the vibrating fork body is
covered by material. This reduction is detected by
piezoelectric devices and converted into a switching output
signal by intelligent circuit. By increasing the area of fork body,
its sensitivity will be improved markedly while the lowest
measurable density is 0.008g/cm3
.
 Reliably used in the hopper of foam molding machine
and plastic machine. By increasing the area of fork body,
the lowest measurable density is up to 0.008 g/cm3
. It is
particularly suitable for measurement of
ultra-low-density and non-conductive medium, such as
foam particles.
 Function works well in the hopper of cement packaging
line. Fork-11, with thinner wing and larger separate
space of the fork body, is particularly suitable to
measure the level of powders and it can effectively
prevent the accumulation of material on fork wing.
 Used to monitor the storage silo of salt.
 Used in rubber raw materials warehouse.
 By increasing the area of fork body, the lowest
measurable density can reach to 0.008g/cm3
.
 High redundancy for hanging and adhesion.
 Particularly for level measurement of powders and
fine-grained bulk solids.
industry-leading.
 Strong self-diagnostic function, can detect false position
accurately.
 Easy for installation, no calibration required.
 Made of strong anti-corrosive materials, such as 316L,
318 S13.
Applicable
materials
Solid powders or granular
Granular size Max 10mm
Fork data
Fork length 150mm
Switching
delay
When immersed 0.5S
When laid bare 1S
Power
Relay output
20～250VAC
20～72VDC
Two-wire 10～36VDC
Output
variable
Relay output
DPDT,
5A/253VAC/24VDC
Two-wire 8mA/16mA,Alarm<2.3mA
Ambient
conditions
Process
temperature
-50℃～250℃
Ambient
temperature
-40℃～80℃
Storage and
transport
temperature
-40℃～80℃
Electrical
protections
Approvals
Explosion-proof EX d IIC T6, Ex ia IIC T6
Materials
optional
Housing
Plastic, Aluminum,
Stainless steel
Fork body 316L
Technical data
Features
Applications
Measuring principle
Overview

Fork-11-Thread
Fork-11-Flange

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Relay output (DPDT) Two-wire
①：Power terminal ①：Power terminal /output (8/16mA)
Notes:
 When install horizontally, install in approx.20°inclined to the vessel bottom to avoid buildup.
 The surfaces of the fork wings need to be installed parallel to the direction of product’s movement.
Approvals
N For EX-free area
C -50～150℃
H -50～250℃Process temperature
Process fitting
TG Thread G11/2''A
TN Thread NPT11/2''A
FA Flange DN50 PN40
FB Flange DN80 PN40
FC Flange DN50 PN16
FD Flange DN80 PN16
Electronics
W Two-wire/8～16mA（12～36V DC）
Housing/Protection P Plastic/IP66/67
N 1/2''NPT
Intruding depth S Standard(220mm)
Notes: If ① is selected, the options of “I” of the certificate are not available.
Fork-11
Order information
Circuit diagrams

▼Ring-11 Liquid Level Switch
Ring-11, a high-reliable and compact level switch
dedicated to liquid level measurement, is designed with only
40mm length of the fork body. Based on the design principle to
detect vibration frequency change of the fork body immersed
in medium, Ring-11, with the lowest measurable density of 0.5
g/cm3
and its precision is the same as a millimeter, is
particularly aimed to measure the level of low density liquid. It
can be mounted in vessels and canisters, and also in bypass
pipelines and output tubes of canister. Ring-11 not only can be
applied to the level measurement of hydrochloric acid, sulfuric
acid, nitric acid, lye, industrial waste water, syrup, etc., but
also suitable for difficult conditions, such as turbulence, air
bubbles, foam generation, buildup, and strong external
vibration.
Ring-11 uses piezoelectric devices to achieve vibration
drive and detection. By shortening the length of fork body to
increase the vibration frequency, the frequency will obviously
decrease when the vibrating fork body contacts with tested
liquid. This change of vibration frequency directly reflects on
the output signal of the piezoelectric detection device, thus,
the detection circuit responds to the change of frequency and
converts into a switching output signal.
 Used in the measurement of liquefied natural gas (LNG)
with the density of 0.56g/cm3
. Ring-11, with only 40mm
long of fork body, and the lowest measurable density is
0.5g/cm3
, especially suitable for LNG pipeline
monitoring, which is under difficult working conditions,
such as explosion-proof, high pressure and ultra low
density.
 Widely used in producing chemical spices, which
usually produce under highly corrosive condition and
high temperature environment. In order to adapt to acid
and alkali liquid, the fork body and the flange are coated
with ECTFE or PFA, and its working temperature is up
to 250 ℃.
 Widely mounted in storage tanks of petroleum, crude oil,
gasoline, lubricating oil, etc. This product has been
approved by dual certifications of Intrinsically Safe and
Explosion-Proof (Intrinsically Safe Ex ia IIC T6,
flameproof Ex d IIC T6).
 Widely mounted in pipeline for pump protection.
 Fork length is only 40mm, especially suitable for
pipelines’ measurement.
 Measurable medium’s density can be as low as
0.5g/cm3
.
 Strong anti-interference feature, can work even under
tough conditions, such as turbulence, air bubbles, foam
generation.
industry-leading.
 High reliability due to the detection of vibration
frequency changing of the fork body.
 Made of strong anti-corrosive materials, such as 316L,
316 enameled, 316L with ECTFE coating, 316L with
PFA coating.
Features
Applications
Measuring principle
Overview

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Applicable liquid
Viscosity 0.1~10000mPa.s①
Flow velocity Max 6m/s
Fork data
Fork length 40mm
Accuracy
Measurement ±1mm
Delay 2mm
Repeatability 0.1mm
Switching delay
When immersed 0.5S
When laid bare 1S
Power
Relay output 20～250VAC/20～72VDC
Two-wire 10～36VDC
Output variable
Relay output DPDT, 5A/253VAC/24VDC
Two-wire 8mA/16mA, Alarm<2.3mA
Ambient conditions
Electrical protections
Approvals
Explosion-proof EX d IIC T6, Ex ia IIC T6
Materials optional
Housing Plastic, Aluminum, Stainless steel
Thread fitting 316L
Flange fitting
316L, 316 enameled, 316L with ECTFE coating,
316L with PFA coating
Fork body
316L, 316 enameled, 316L with ECTFE coating,
316L with PFA coating
Note: conditions of ①: the viscosity range with the density of 1.
Technical data

Ring-11-Thread
Ring-11-Flange

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Relay output (DPDT) Two-wire
①：Power terminal ①：Power terminal /output (8/16mA)
Notes：
 The surfaces of the fork wings need to mount parallel to the direction of product’s movement.
Approvals
N For EX-free area
C -50～150℃
H -50～250℃
A -50～150℃/ Gas-tight leadthrough
B -50～250℃ / Gas-tight leadthrough
Process temperature
Process fitting
TC Thread G3/4''A
TD Thread NPT3/4''A
TH Thread G1''A
TM Thread NPT1''A
FA Flange DN25 PN40/316L
FB Flange DN50 PN40/316L
FC Flange DN25 PN40/ with ECTFE coating
FD Flange DN50 PN40/ with ECTFE coating
FE Flange DN25 PN40/ with PFA coating
FF Flange DN50 PN40/ with PFA coating
FG Flange DN25 PN40/ with Enamel coating
FH Flange DN50 PN40/ with Enamel coating
Electronics
W Two-wire 8/16mA（12～36V DC）
Housing/Protection
P Plastic/IP66/67
Cable entry
M M20*1.5
N 1/2''NPT
Intruding depth
S Standard(69mm)
Ring-11
Notes: If ① is selected, the options of “I”of the certificate are not available.
Order information
Circuit diagrams

▼Ring-21 Compact Liquid Level Switch
Ring-21, an economical compact tuning fork liquid level
switch, is designed in a compact and lightweight structure,
with only 40mm long of the fork body while the total length is
only 167mm, and the maximum diameter is about only 32mm.
Ring-21 can be applied to the level measurement of vessels,
storage tanks under difficult conditions, such as air bubbles
and vibration interference. This switch is particularly suitable
to be installed in small containers and tanks with constricted
mounting space. The design principles are also based on the
detection of changing of vibration frequency when fork body is
immersed in medium. The measurable medium density is as
low as 0.7g/cm3
.
Ring-21 is also designed based on the principles of
detecting the changing of fork’s vibration frequency when it is
immersed in medium. The vibration frequency of the fork
obviously decreases when vibrating fork body contacts with
tested liquid. This change of vibration frequency directly
reflects on the output signal of the piezoelectric detection
device, and the detection circuit will respond to the change of
the frequency, as well as converting it into a switching output
signal.
 Mainly applied in occasions that requires low-cost
measurement, and it is suitable for nonhazardous areas,
particularly applicable to install in pipelines and
constricted spaces.
 Compact and lightweight structure, with total length of
167mm, maximum diameter of 32mm, and is only
40mmlongof the fork body.
 Particularly suitable for pipelines measurement in
constricted mounting space.
 Measurable medium density can be low to 0.7g/cm3
.
 Low price, cost-effective.
 Unaffected by the foam, air bubbles, viscous, vibration
and liquid properties.
 High reliability due to the detection of vibration
frequency changing of the fork body.
 Simple operation. Safe, reliable, and has strong
compatibility.
Applicable
materials
Density ＞0.7g/cm3
Viscosity 1～10000mPa.s①
Flow velocity Max 6m/s
Fork data
Vibration frequency ～1200Hz
Fork length 40mm
Accuracy
Measurement ±1mm
Delay 3.0±0.5mm
Repeatability 0.5mm
Switching
delay
When immersed 0.5S
When laid bare 1S
Power
Relay output
20～250V AC
18～30V DC
PNP 10～35VDC
Power Consumption AC<3.8mA/DC<825mW
Ambient
conditions
Storage and transport
temperature
-40℃～80℃
Electrical
protections
PNP Category III, class II
Approvals Protection rating
Pg11: IP65
M12*1: IP66/67
Materials
Housing 316L
Fork body 316L
Note: conditions of①: the viscosity range with the density of 1
Technical data
Features
Applications
Measuring principle
Overview

www.jiweimeter.com
Notes：
 The surfaces of the fork wings need to mount parallel to the direction of product’s movement.
Ring-21
C -50～100℃
H -50～150℃
TA Thread G½ ”A
TB Thread ½ ”NPT
TC Thread G ¾”A
TD Thread ¾ ”NPT
TH Thread G 1” A
TM Thread 1”NPT
R Relay (18～30VDC)
S Relay (20～253VAC)
T PNP (10～36VDC)
C Pg11
M M12*1
N 1/2NPT
Process temperature
Process fitting
Electronics
Cable entry
Order informationDimensional drawings
Circuit diagrams

RF Admittance Level SwitchShenzhen Jiwei Automations Ltd.,
RF Admittance Level Switch
Cape-11 RF Admittance Level Switch, is an measuring equipment which has high reliability and excellent versatility. The
switch is used to detect the level of fly ash, solid granular and adhesive materials. The design is based on absorbing the
advantages of similar products of other rival brands and combining with Jiwei’s independent innovative technology and processes.
Cape-11 RF Admittance Level Switch series use probe to sense the change of capacitive reactance and impedance between
the probe and the vessel while detecting the material position .Within the electronic unit, the probe’s measuring pole and the
reactance of empty vessel together form a balanced bridge circuit and generate a stable oscillation signal. When the level rises
and measured medium covers the probe, the reactance between the probe and vessel wall changes, which causes imbalance of
the bridge circuit, and stops generating oscillation signal. This change will be detected by the circuit, and then output an alarm
signal. Meanwhile, the oscillation signal works as a radio frequency signal that is applied to the probe’s measuring pole, but also
goes through the 1: 1 voltage follower and is sent to shield pole. So, the RF signals of measuring pole and shield pole have the
same electric potential, phase, and frequency, but they are isolated and independent each to other. When a material adhere to the
probe, there is no electric potential difference between measuring pole and shield pole, so the form of electrical isolation ensures
the signal of shield pole has no effect on the detection, thus the change of reactance of probe’s measuring pole can only decided
by the measured material between the probe’s measuring pole and the vessel, which do not make the coating of probe affect the
detection.
Cape-11 RF Admittance Level Switch series include four models: Standard Type, Guard Type, Rope Type and Ultra-high
Temperature Type:
Cape-11A Standard Type:
Suitable for measurement of dust, coal ash etc., has good versatility, and the installation and maintenance are simple.
Cape-11P Guard Type:
On the basis of the Standard Type, there is an extra stainless steel protective tube, which is able to withstand the impact of heavy
materials.
Cape-11R Rope Type:
Suitable for measurement of large tanks and silos, vertical installation, effectively avoid side impact of the material.
Cape-11H Ultra-high Temperature Type:
The probe uses high temperature ceramic material, its process temperature can reach up to 450℃, which is industry-leading.
In development, Cape-11 Admittance Level Switch series
absorb the advantages of similar products of other rival brands
combining with Jiwei’s independent innovative technology and
processes, meanwhile we have been focusing on process
details; strictly control the production processes and quality
inspections to ensure our products have extremely high quality
and reliability. Compared to the similar products of other
brands, Cape-11 Admittance Level Switch series have the
following advantages:
 Excellent versatility, it can be widely used in the
measurement of fly ash, solid granular and adhesive
materials.
 Has external dual color LED indicators, by rotating the
housing relatively to process fitting make the LED
convenient for remote observation.
 Modular design with high reliability and easy to install
while calibration is not required.
 Have passed through reliable tests and have received
certifications by third party.
 Has strong impact resistance, while the external layer is
covered with stainless steel protective tube.
 Process temperature is up to 450℃.

http://www.jiweimeter.comRF Admittance Level Switch
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▼Cape-11A Standard Type RF Admittance Level Switch
Cape-11A Standard Type RF Admittance Level Switch, can measure capacitance as well as
impedance between the probe and the vessel, particularly suitable for measuring dusts, coal ashes and
other mediums. The probe is not affected by adhesive materials, making it to solve other tough
applications efficiently with strong versatility. Cape-11A uses modular design, the installation and
maintenance are simple，and is equipped with external LED lights for remote observation.
 Excellent versatility, it can be widely used in the measurement of fly ash, solid granular and
adhesive materials.
 Has external dual color LED indicators, by rotating the housing relatively to process fitting to make
the LED convenient for remote observation.
 Modular design with high reliability and it is convenient for installation and maintenance.
 To ensure extremely high reliability, our products have passed through reliable tests and have received certifications by third
party.
 Cheap and high performance-price ratio.
 Dust bag, light ash hopper and sump pumps in ash conveying system at power plant.
 Coal ash silo (fly ash).
 Dust bin, hopper of flue gas desulphurization equipment.
 Limestone silo of sintering desulfurization unit.
Medium
Type Solid granular, Adhesive materials.
Dielectric constant ≥1.6
Probe data
Length 250～2000mm
Length of shield 90mm/240mm/300mm /590mm, Customer specified
Diameter φ8mm/φ10mm
Materials
Housing Aluminum
The inner shell Plastic
Metal of probe SUS304, 316L
Insulation of probe PTFE
Power
AC 85～264VAC
DC 18～30VDC
Power consumption ≤3W
Switch delay
When immersed 1S
When laid bare 1S
Signal output
Relay DPDT, 8A/250VAC/30VDC
Delay 0-30S Continuously adjustable
Operating conditions
Approvals Protection rating IP66
Technical data
Applications
Features
Overview

Notes：
 The shield pole of RF Admittance Level Switch should protrude into the silo at least 50mm.
 When mounting vertically, the RF Admittance Level Switch should be mounted at a distance of 500mm from the vessel wall.
 Mounting RF admittance Level Switch approx 20°inclined to the vessel bottom to avoid buildup.
 When the RF Admittance Level Switches need to be installed in multiple locations the vertical distance between the two
probes is at least 500mm.
 When installed, it should be avoided in the inlet and outlet points.
Power
Process fitting
A 220 V AC
D 24 V DC
ACape-11
TC Thread G ¾"A
TD Thread ¾" NPT
TH Thread G 1"A
TM Thread 1" NPT
TE Thread G 1¼"A
TF Thread 1¼" NPT
TG Thread G 1½"A
TN Thread 1½" NPT
FA Flange DN50 PN16
FB Flange DN80 PN16
XX customized design
Cable entry
M M20*1.5
N ½＂NPT
Intruding depth
Length of shield pole
Common length：90 240 300 590
Customized design（Unit：mm）
Common length：250 550 750 900 1000 12000
Customized design （Unit：mm）
Optional range：250～2000mm
Note: The number of intruding depth and length of shield poles are fixed at three and four digits respectively, If the
number of real depth or length is less than the required fix digits, zero should be added in front of its number.
For example: The length of shield pole is 90mm, expressed as "090"; the intruding depth of 750mm, expressed as
"0750”。
a b

Circuit diagrams

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▼ Cape-11P Guard Type RF Admittance Level Switch
Cape-11P Guard Type RF Admittance Level Switch is on the basis of Standard Type with stainless steel
protective tube, and can withstand the impact of heavy materials. This switch is particularly aimed to measure the
level of fly ash, solid granular and adhesive materials. The design of anti-linked material circuit can eliminate
measuring error caused by the buildup or the material coating on the vessel, effectively improve the detection’s
accuracy and reliability, also, make the product suitable for dust control at power station, and position control of
the ash bin, etc
 Has strong impact resistance, while the external layer is covered with stainless steel protective tube.
 Widely used in the measurement of fly ash, solid granular and adhesive materials, particularly suitable for
dust control at power station, and position control of the ash bin, etc.
 Has external dual color LED indicators, by rotating the housing relatively to process fitting to make the LED
convenient for remote observation.
 To ensure extremely high reliability, our products have passed through reliable tests and have received
It is typically applied in fields as follow:
 Heavy ash hopper in ash conveying system at power plant.
Has strong impact resistance, while the external layer is covered with stainless steel protective tube.
 Alumina powder silo and CDQ (Coke Dry Quenching) charge warehouse at smelting plant.
 Raw materials warehouse and cement silo at cement plant.
Medium
Type Heavy solids, Adhesive material
Probe data
Length 750～2000mm
Length of shield 90mm/240mm/300mm /590mm, Customer Specified
Length of protective sleeve
Length of probe 750-1200mm: 210mm/370mm
Length of probe＞1200mm： Customer specified
Diameter φ10mm
Materials
Housing Aluminum
Metal of probe SUS304
Protective sleeve SUS304
Power
AC 85～264VAC
DC 18～30VDC
Switch delay
When immersed 1S
When laid bare 1S
Signal output
Technical data
Applications
Features
Overview

Notes：
 The shield pole of RF Admittance Level Switch should protrude into the silo at least 50mm.
 Mounting RF admittance Level Switch approx 20°inclined to the vessel bottom to avoid buildup.
 When the RF Admittance Level Switches need to be installed in multiple locations, the vertical distance between the two
Power
Process fitting
A 220 V AC
D 24 V DC
PCape-11
TH Thread G 1"A
TM Thread 1" NPT
TE Thread G 1¼"A
TF Thread 1¼" NPT
TG Thread G 1½"A
TN Thread 1½" NPT
FC Flange DN50 PN16
FD Flange DN80 PN16
Cable entry
M M20*1.5
N ½＂NPT
Intruding depth
Common length: 300 590
Customized（Unit：mm）
Common length: 750 900 1000 12000
Customized design (Unit：mm）
"0750”。
a b

Circuit diagrams

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▼Cape-11R Rope Type RF Admittance Level Switch
Cape-11R Rope Type Admittance Level Switch is designed for top-loading measurement and when the
measuring ranges more than two meters; one side of the cable components needs to connect with the probe.
This type of product is suitable for large tanks and silos measurement, is installed in a vertical way, can
effectively avoid the impact of the material.
 It is applicable to detect the level of measured medium in large tanks and silos.
 Has external dual color LED indicators, by rotating the housing relatively to process fitting to make the
LED convenient for remote observation.
 To ensure extremely high reliability, our products have passed through reliable tests and have received
It is typically applied in level measurements with large range, such as:
 Coal bunker at power plant
 Cement silo at cement plant
Medium
Type Solid granular
Probe data
Length 600～6000mm
Length of shield 90～800mm, Customer specified
Cable diameter φ6mm
Materials
Housing Aluminum
Metal of probe SUS304, 316L
Rope SUS304
Power
AC 85～264VAC
DC 18～30VDC
Switch delay
When immersed 1S
When laid bare 1S
Signal output
Technical data
Applications
Features
Overview

Notes:
 Rope Type Admittance Level Switch must be mounted vertically.
 Probe must be mounted at a least distance of 1.5m from the vessel wall.
Power
Process fitting
A 220 V AC
D 24 V DC
RCape-11
TC Thread G ¾"A
TD Thread ¾" NPT
TH Thread G 1"A
TM Thread 1" NPT
TE Thread G 1¼"A
TF Thread 1¼" NPT
TG Thread G 1½"A
TN Thread 1½" NPT
FC Flange DN50 PN16
FD Flange DN80 PN16
Cable entry
M M20*1.5
N ½＂NPT
Intruding depth
"0750”。
 Order informationDimensional drawings
Circuit diagrams

www.jiweimeter.com
▼Cape-11H Ultra-high Temperature RF Admittance Level Switch
Cape - 11 H Ultra-high Temperature Type Admittance Level Switch, is specially applied to working
condition that process temperature is over 250℃, its highest process temperature can be reach up to
450℃.This switch’s probe is made of high temperature resistant ceramic materials, and it is also widely
used in metallurgy, environmental protection, chemical industry, etc.
 Ceramic probe, process temperature can reach up to 450℃.
 Has external dual color LED indicators, by rotating the housing relatively to process fitting to make
the LED convenient for remote observation.
 To ensure high reliability, products have passed through reliability testing and certification by a third
party.
It is typically applied in level control with the working temperature up to 450 ℃, such as:
 Hoppers of Coal economizer at power plant.
 Sintered ash silo at smelting plant.
 Level control of cement material in grate cooler at cement plant.
Medium
Type Bulk solids at high temperatures
Probe data
Length 400～1800mm
Length of shield 90～590mm, Customer specified
Diameter φ12mm
Materials
Housing Aluminum
Metal of probe SUS304
Insulation of probe Ceramic
Cable SUS304
Power
AC 85～264VAC
DC 18～30VDC
Switch delay
When immersed 1S
When laid bare 1S
Signal output
Storage and transport
temperature
-40℃～80℃
Technical data
Applications
Features
Overview

23|www.jiweimeter.com
Notes:
 The shield pole of RF Admittance Level Switch should protrude into the silo at least 50mm
 Mounting RF Admittance Level Switch approx 20°inclined to the vessel bottom to avoid buildup.
 When the RF Admittance Level Switches need to be installed in multiple locations, the vertical distance between the two
Power
Process fitting
A 220 V AC
D 24 V DC
HCape-11
TH Thread G 1"A
TM Thread 1" NPT
TE Thread G 1¼"A
TF Thread 1¼" NPT
TG Thread G 1½"A
TN Thread 1½" NPT
FC Flange DN50 PN16
FD Flange DN80 PN16
Cable entry
M M20*1.5
N ½＂NPT
Intruding depth
"0750”。
a b

Circuit diagrams

http://www.jiweimeter.comMagnetic Level Indicator
www.jiweimeter.com
Magnetic Level Indicator
Flap-11 Magnetic Level Indicator series products are designed based on communicating tube and the principles of magnetic
coupling function to achieve real-time level measurements. When the measured liquid’s level in the vessel changes, the magnetic
float in communicating tube will go up and down, and the permanent magnet steel inside the magnetic float makes the magnetic
flaps of the indicator outside the communicating tube turn by 180°which is driven by the magnetic coupling function. Usually the
front and back surface of flaps are coated with two different colors respectively (normally red and white) to indicate the actual liquid
level inside the vessel. When the level of vessel rises, the flaps turn from white to red, and when the level of vessel drops, the flaps
turn from red to white, at the red and white junction, the actual level of vessel is indicated. According to different chemical
properties of the measured medium, appropriate materials for the communicating tube should be applied. In order to achieve to the
best accuracy of measurement, the magnetic float’s weight, volume and structure have to be satisfied with the density of measured
liquid.
In order to adapt to measured liquids’ different density and chemical properties, Flap-11 series are divided into the following
specific application models:
Flap-11S Economical Type:
Uses 304 stainless steel material, which is economical and practical, meets most industrial conditions and can be used in mildly
corrosive liquid measurement.
Flap-11A Standard Type:
Made of strong anti-corrosive materials, such as 316L, is suitable for most corrosive medium.
Flap-11P Lined Type:
Uses 304 stainless steel with PTFE-lined, can be applied to highly corrosive liquid.
Flap-11C Plastic Type:
Made of PP/PVC, suitable for low pressure and strong corrosive liquid.
Meanwhile, JIWEI also developed SW-11 Magnetic Switch and Reed-11 Remote Transmitter which are externally mounted on
the Magnetic Level Indicator to achieve automatic control and remote control.
SW-11 Magnetic Switch:
Using the power reed of international famous brands as its core components, and certificated with Flameproof Enclosures and
Intrinsic Safety. Explosion-proof rating: Ex d IIC T6 Gb and Exia IIC T6 Ga, this is the highest level of similar products in peer
industry. Also, its ingress protection grade reaches to IP66/67
Reed-11 Remote Transmitter:
Core components employ the processing chips and reed of international famous brands. The guiding tube uses 316L, improves
the level of corrosion resistance and its reliability. It also got certifications of Flameproof Enclosures and Intrinsic Safety.
Explosion-proof rating: Ex d IIC T6 Gb and Exia IIC T6 Ga. Also, its ingress protection grade reaches to IP66/67
Flap-11 Magnetic Level Indicator series products absorb the
advantages of similar products of other rival brands combining with
Jiwei’s independent innovative technology and processes,
meanwhile we have been focusing on process details; strictly
control the production processes and quality inspections to ensure
our products have extremely high quality and reliability. Compared
to the similar products of other brands, Flap-11 Magnetic Level
Indicator series products have the following advantages:
 Indicator panel and magnetic flaps uses widened design，
make visual distance and viewing angle increase greatly, the
ruler and its figures are bolder and clearer.
 Unique design of end cap of the indicator panels and glass
adhesive sealing technology, ensure the level of ingress
protection reach to IP66.
 Accessory magnetic switches and transmitters have got
double certifications of Explosion Proof and Intrinsically
Safety.
 Can be equipped with additional steam jacket, electric
heating, thermal insulation and anti frost devices for applying
to a variety of complex conditions.

Magnetic Level IndicatorShenzhen Jiwei Automations Ltd.,
▼Flap-11S Economical Type Magnetic Level Indicator
Flap-11S Economical Type Magnetic Level Indicator, its most prominent features are economic and practical.
This indicator uses 304stainless steel, which is particularly suitable for measuring slightly corrosive liquids. The
floating tube’s diameter is 51mm, and is made of high quality 304 seamless stainless steel tube, can effectively
avoid the common defects, such as leakage, low pressure, unsightly appearance, and short life, etc. Also,
Flap-11S has introduced innovative production and test processes to improve its reliability and quality.
 Indicator panel and magnetic flaps use widened design，make visual distance and viewing angle increase
greatly, the ruler and its figures are bolder and clearer.
 Unique design of end cap of the indicator panels and glass adhesive sealing technology, ensure the level of
ingress protection reach to IP66.
 Accessory magnetic switches and remote transmitters have got double certifications of Explosion-proof
and Intrinsically Safety.
 Made of 304 seamless stainless steel tubes, which is cost-effective.
 Mounted in Salt water tanks, lye recycling, dechlorination tower, chlorate decomposition, high purity
hydrochloric acid storage tank of ionic membrane electrolyzer.
 Applied in Ammonia tank
 Monitoring the liquid level of monomer tank at PVC production plant
Fluid
Density 0.45～2g/cm3
Viscosity ≤0.05Pa.s
Measurement
parameters
Measuring range 300～5600mm
Accuracy ±5mm or ±10mm
Material specifications
Measuring tube 304 , Ф51, The thickness depending on the process condition
Float 304, 316L
Indicator panel Aluminum, Max.400℃
Process pressure -1～10MPa
Signal output
Switch 220VAC 3A, SPDT
Transmitter 4～20mA
Process connection
Connection type Flange, customization
Materials 304
End fittings
Upper vent flat welding cap, also can be configured flange, cocks, 1 / 2” NPT ball
Lower drain 1 / 2” NPT ball, also can be configured flange and cocks
Additional devices
steam jacket customization
electric heating customization
cryogenic insulation /
heat insulation
Synthetic rubber, asbestos, polyolefin
Anti-frost Used in a occasion that temperature less than -5 ℃
Safety certification
Protection rating IP66
Explosion-proof Exd IIC T6,Exia IIC T6(switch and transmitter)
Technical data
Applications
Features
Overview

www.jiweimeter.com
K Side to side
B Top/Bottom installationExecution
Process fitting
A Flange DN20
B Flange DN25
C Flange DN32
D Flange DN40
E Flange DN50
F Flange DN80
X Customized design
Process pressure
1 1.0 MPa
2 1.6 MPa
3 2.5 MPa
4 4.0 MPa
5 6.4 MPa
Transmitters
N Without
R 4～20mA Reed switch transmitter
H 4～20mA+HRAT Reed switch transmitter
Switch 0 Without
N N represents the number of magnetic switches
Approvals
Measurement range（mm）
L Has to explain the range.
e.g; Range 100mm, express L-100
N For Ex-free area
I Intrinsically Safe (Exia IIC T6
D Flame-proof (Exd IIC T6)
SFlap-11
Additional devices
N Without
T Steam jacker
J Electric heating
K Cryogenic insulation/heat insulation
S Anti-frost
Order information

▼Flap-11A Standard Type Magnetic Level Indicator
Flap-11A Standard Type Magnetic Level Indicator, is made of 316L stainless steel, and is particularly
suitable for measuring most corrosive liquids. The floating tube is with diameter of 51mm, which is made of
high quality seamless stainless steel tube, and can effectively avoid common defects, such as leakage, low
pressure, unsightly appearance, and short life, etc. Also, Flap-11S has introduced innovative production and
test processes to improve its reliability and quality.
 Indicator panel and magnetic flaps use widened design，make visual distance and viewing angle
increase greatly, the ruler and its figures are bolder and clearer.
 Unique design of end cap of the indicator panels and glass adhesive sealing technology, ensure the
level of ingress protection reach to IP66.
 Accessory magnetic switches and remote transmitters have got double certifications of Explosion Proof
 Made of 316L seamless stainless steel tube, it is suitable for most corrosive liquid.
 The level measurement of wash tank and waste water tank of Ion-exchange membrane electrolysis
apparatus.
 The level measurement of Make-up tank of compound phosphate at hydrogen peroxide plant.
 Applied in industrial waste water, lye tank.
Fluid
Measurement
parameters
Accuracy ±5mm or ±10mm
Material specifications
Measuring tube 316L ,Ф51, The thickness depending on the process condition
Float 316L
Process pressure -1～10MPa
Signal output
Process connection
Materials 316L
End fittings
Upper vent flat welding cap, also can be configured flange, cocks, 1 / 2” NPT ball
Lower drain 1 / 2” NPT ball, also can be configured flange and cocks
Additional devices
steam jacket customization
electric heating customization
cryogenic insulation /
heat insulation
Explosion-proof Exd IIC T6, Exia IIC T6(switch and transmitter)
Technical data
Applications
Features
Overview

www.jiweimeter.com
K Side to side
Process fitting
A Flange DN20
B Flange DN25
C Flange DN32
D Flange DN40
E Flange DN50
F Flange DN80
X Customized design
Process pressure
1 1.0 MPa
2 1.6 MPa
3 2.5 MPa
4 4.0 MPa
5 6.4 MPa
Transmitters
N Without
Switch 0 Without
Approvals
e.g: Range 100mm, express L-100
N For-EX-free area
I Intrinsically Safe (Exia IIC T6)
AFlap-11
Additional advices
N Without
T Steam jacker
J Electric jacket
S Anti-frost
Order information

▼Flap-11P Lined Type Magnetic Level Indicator
Flap-11P Lined Type Magnetic Level Indicator uses unique lining technical design, makes lining junction of
the floating tube and process connect flange achieve to the best-match condition, effectively avoids corrosion
damage made by accidental medium leakage, which is usually caused by extrusion fracture when assembling.
Also, Flap-11S has introduced innovative production and test processes to improve its reliability and quality.
Flap-11P is mainly used to measure strong corrosive liquid, and, is widely applied to chemical industry, oil refining,
storage and transportation, water treatment and other industries.
 The lining junction between floating tube and process connection flange uses unique lining technology
effectively avoids corrosion damage made by accidental medium leakage, which is caused by extrusion
fracture when assembling.
 Indicator panel and magnetic flaps uses widened design，make visual distance and viewing angle increase
 Unique design of end cap of the indicator panels and glass adhesive sealing technology, ensure the level of
ingress protection reach to IP66.
 Accessory magnetic switches and remote transmitters have got double certifications of Explosion Proof and
Intrinsically Safety.
 The lowest measurable density can reach 0.5g/cm3
 Mounted in Salt water tanks, lye recycling, dechlorination tower, chlorate decomposition, high purity hydrochloric acid
storage tank of ionic membrane electrolyze.
 Applied in Ammonia tank.
 Monitoring the liquid level of monomer tank at PVC production plant.
Fluid
Measurement
parameters
Accuracy ±5mm or±10mm
Material
specifications
Measuring tube 304Ф57, PTFE lined, The thickness depending on the process condition
Float 316L
Process pressure -1～2.5MPa
Process temperature Max.150℃
Signal output
Process connection
Materials 304, PTFE lined
End fittings
Upper vent flange
Lower drain Flange, also can be configured lined
Additional devices
cryogenic insulation / heat
insulation
Technical data
Applications
Features
Overview

www.jiweimeter.com
K Side to side
Process fitting
A Flange DN20
B Flange DN25
C Flange DN32
D Flange DN40
E Flange DN50
F Flange DN80
X Customized design
Process pressure
1 1.0 MPa
2 1.6 MPa
3 2.5 MPa
Transmitters
N Without
Switch 0 Without
Approvals
Measurement range（mm） L Has to explain the range.
N For-EX-free area
I Intrinsically Safe (Exia IIC T6)
PFlap-11
Additional advices
N Without
S Anti-frost
Order information

▼Flap-11C Plastic Type Magnetic Level Indicator
Flap-11C Plastic Type Magnetic Level Indicator is a commonly used anti-corrosion level meter. With the
same measured range, its weight is only about 1/5 of the Standard Type, which greatly facilitates the installation.
Also, Flap-11S has introduced innovative production and test processes to improve its reliability and quality.
Flap-11C is particularly suitable for chemical water treatment at power station, sewage treatment, printing and
dyeing industry, as well as other acidic medium, which are not miscible with PVC/PP.
 Lightweight, the weight is about only 1/5 of stainless steel product, and easy installation.
 Be made of strong anti-corrosive materials, such as PP/PVC.
 Indicator panel and magnetic flaps use widened design，make visual distance and viewing angle increase
 Unique design of end cap of the indicator panels and glass adhesive sealing technology, ensure the level
of ingress protection reach to IP66.
 Accessory magnetic switches and remote transmitters have got double certifications of Explosion Proof
 Used to measure the level of regeneration tank, refrigerant tank, hydrochloric acid tank, alkali tank of membrane nitrate
removal equipment at caustic soda plant.
 Used to measure the level of waste water tank at sewage treatment plant.
 Applied in raw materials tank at dyeing plant.
Fluid
Measurement
parameters
Measuring range
Side to side :300～4000mm
Top to bottom:300～4000mm
Accuracy ±5mm or±10mm
Material
specifications
Measuring tube PP/PVC , Ф63*4.7
Float NBR, PP, PVC
Process pressure -0.1 MPa～1.0Mpa, Recommended to work at under 0.6MPa
Process temperature PP: -20℃～80℃;PVC: -30℃～70℃
Signal output
Process connection
Materials PP, PVC
End fittings
Upper vent flange
Lower drain Flange, also can be configured others
Technical data
Applications
Features
Overview

www.jiweimeter.com
K Side to side
Process fitting
A Flange DN20
B Flange DN25
C Flange DN32
D Flange DN40
E Flange DN50
F Flange DN80
X Customized design
Process pressure
1 0.6 MPa
2 1.0 MPa
Transmitters
N Without
Switch
0 Without
Approvals
N For-EX-free area
I Intrinsically Safe (Exia II T6)
CFlap-11
Order information

▼SW-11 Magnetic Switch
SW-11 Magnetic Switch uses the power reed of
international famous brands as its core components and is
designed with aluminum housing. It is certificated with
Flameproof Enclosures and Intrinsic Safety (Explosion-proof
grade Exd IIC T6, Intrinsically Safe rating Exia IIC T6), which
is the highest level of similar products in peer industry. As the
measured fluid level rises and drops, the magnetic float rises
and drops as well, and when the permanent magnetic steel
within the magnetic float moves close to the switch, it
stimulates the attached switches, triggering reed switch’s
status to change, and providing a signal back to the control
system to realize the liquid level control.
The output of the switches can be configured with SPST
or SPDT, and can be set as anti-overflow or anti-dry
protection.
 Use the power reed of international famous brands,
which with capacity of heavy current and long service
life.
 The guide tube is made of 316L material, with strong
corrosion resistance.
 Has got double certifications of Explosion Proof and
Intrinsically Safety.
 The ingress protection grade reaches to IP66/67.
Output Type Switch signal
Switch contact capacity
220VAC,1.0/2.0A
24VDC,1.5/2.5A
Ambient temperature -20～70゜C
Explosion-proof
Ex d IIC T6
Ex ia IIC T6
Cable entry 1/2’’NPT / M20x1.5
SW-11
N:For Ex-free area
D:Flame-proof(Exd IIC T6）
I:Intrinsically Safe(Exia IIC T6）
01:SPDT，bistability
02:SPST， bistability
03:SPDT，monostability
04:SPST， bistability
M20×1.5M20×1.5
M20×1.5M20×1.5
Order information
Technical data
Features
Overview

www.jiweimeter.com
▼Reed-11 Remote Transmitters
The remote transmitter is designed to be used with
Flap-11 Magnetic Level Indicator series products by mounted
on float tube outside. It sends a 4-20mA signal from a remote
location back to the operation and control center, to achieve
real-time level measurement and monitoring.
Inside the floating tube the magnetic float, that rises and
drops by following with the fluid level, triggers the same level
close reed switch in guiding tube to change its status, this
leads to the resistance change in the circuit. A two-wire
transmitter chip converts the resistance into a 4-20mA current
signal through the current-voltage convertor; the value of
current signal output will reflect the corresponding fluid level.
Usually its resolution is ±5mm or ±10mm, and, the higher the
accuracy is, the larger number of reed is needed.
 The plastic reed of international famous brands used,
has long service life.
 Use the chips of international famous brands to
complete voltage-current converting and to achieve 4～
20mA output.
 Certificated with both Flameproof Enclosures and
Intrinsic Safety.
 The protection rating reaches to IP66/67.
 The guide tube is made of 316L material with strong
corrosion resistance.
Accuracy +-5mm / +-10mm
Power supply 10～36VDC
Ambient temperature -20～50゜C
Explosion-proof
Ex d IIC T6
Ex ia IIC T6
The protection rating IP66/67
Cable entry 1/2’’NPT / M20x1.5
Reed-11
N:For Ex-free area
D:Flame-proof(Exd IIC T6）
I:Intrinsically Safe(Exia IIC T6）
Four digits represent range (Unit: mm)
For example: (1) 340mm, written: 0340
(2) 1340mm, written; 1340
M20×1.5M20×1.5
M20×1.5M20×1.5
Order information
Technical data
Features
Overview

▼Float
Magnetic float is designed based on the Principle of
Buoyancy (Archimedes' Principle) while combining with
magnetic coupling system. The float type （size，weight and
structure） is determined by specific process fluid’s density,
pressure and temperature. Also, the materials of construction
of float must be compatible with the process fluid. Normally,
according to different conditions, its materials can use 304，
316L stainless steel, 304 stainless steel cladding PTFE or
plastic, etc. Each float is engineered for proper buoyancy for
each particular application. In order to ensure product’s
measurement accuracy and working reliability, the size and
weight of magnetic float need to be matched with measured
fluid. Flap-11 Magnetic Level Indicator series products have a
variety of magnetic floats. Flap-11 is suitable for medium
density as low as 0.45g/cm3
, which covers most mediums and
conditions.
 A variety of magnetic float for option, which achieving a
perfect match between the magnetic float and
measured liquid’s attributions and density.
 Independent innovative design, ensure higher reliability.
 Including one type of 304 float out-lined with F46, better
anticorrosive capability.
Viscosity ≤0.05PaS
Float diameter φ40、φ43、φ45、φ50
Float materials
304、316L、304 with F46 out-lined、
plastic, etc
▼Indicator
The indicator panel and magnetic flaps for Flap-11
Magnet level series products use widened design，which
makes visual distance and viewing angle increase greatly，
and the ruler and figures bolder rand clearer. The shell adopts
high temperature type aluminum alloy, and the protective plate
is made of glass panel, which effectively avoids the defects of
plastic panel that is easy to turn yellow and aging. Unique
design of end cap of the indicator panels and glass sealing
technology, ensure the protection rating reach to IP66. Also,
the innovative design of flaps and the reliable magnetic
coupling function greatly improve products’ working reliability,
and avoid indicating error caused by false rotation of flaps
 Greater visual distance and viewing angle, has an
aesthetic appearance.
 The protection rating reaches to IP66.
 Using glass panel avoids the defects of plastic panel
that is easy to turn yellow and aging.
 Innovative design of flaps and reliable magnetic
coupling function greatly improve its working reliability,
and avoid indicating error caused by false rotation of
flaps.
Panel size 73mm×22mm
Flaps size 20mm×9mm×0.9mm
Glass panel thickness 4mm
Flaps material Aluminum
The protection rating IP66
Technical data
Features
Overview
Technical data
Features
Overview

http://www.jiweimeter.comRadar Level Meter
www.jiweimeter.com
▼Rada-11 Pulse Radar Level Meter
Rada-11 is a 5.8 GHz low-frequency pulse radar level
meter adopting integration rod antenna. Based on the
hermetical design of microwave-transmitting antenna, the
product having powerful anti-interference capability is suitable
for the applications likely to produce vaporous liquids, dew,
and crystallization, as well as the scenarios supplied with
stirrers, and of highly corrosive.
The Rada-11 pulse radar level meter adopts the circuit
design of micro strip line structure, inside which the 5.8GHz
microwave pulse signal is generated. Based on the design
principle of high frequency waveguide, the microwave pulses
are transmitted from the end of the antenna. When the
transmitted pulses hit the surface of the measured medium,
part of the energy is reflected back and received by the same
antenna. Based on the principle of time expansion techniques,
it is possible to calculate the time intervals between
transmitting pulse and receiving pulse, so the distance
between the antenna and the surface of the measured
medium is able to be figured out.
 Measurable liquids: Hydrochloric acid, Sulfuric acid,
Nitric acid, Water, Acid and alkali, Industrial wastewater,
Liquor, etc.
 Main industries: Chemical, Environment,
Pharmaceutical, Water conservancy, etc.
 Rod antenna made of PP or PTFE with strong corrosion
resistance.
 Integrally-designed rod antenna suitable for applying in
the conditions of steam, condensation and
crystallization and for the application of container with
stirrer, etc.
 LUI displays the echo profiles to support trouble
diagnosis.
 Remote setting available by the intrinsically-safe
infrared handheld programmer.
Measurable
liquid
Permittivity DK>3
Antenna
Type Rod antenna
Materials PP/PTFE
Measurement
parameters
Transmission
frequency
5.8GHz
Range 20m
Blind limitation
0.5m(Calculated from the
reference point)
Deviation 0.1% of full range or 10mm
Repeatability ±5mm
Power
DC 24VDC, Max.30VDC
AC 220V, 50HZ
Output
variable
Analog output 4～20mA(±0.02mA)
Communication
protocol
HART, PROFIBUS-PA
Fault protection
Programmable high, low
and keep
Ambient
conditions
Process
pressure
0.1～3bar
Process
temperature
-40℃～120℃
Ambient
temperature
-40℃～80℃
Installation level I
Pollution degree IV
Approvals
Protection rating
Type4X NEMA 4X, Type 6
/NEMA 6, IP67
Explosion-proof
EX d IIC T4
EX ia IIC T4
Materials
Housing Aluminum
Technical data
Features
Applications
Measuring principle
Overview

Radar Level MeterShenzhen Jiwei Automations Ltd.,
Rada-11
Approves
N For EX-free area
I Intrinsically Safe（Exia IIC T4）
D Flame-proof（Exd IIC T4）
Antenna type
1 PP
2 PTFE
3 304L/PTFE①
4 316L/PTFE②
Antenna extension
1 Shielding 100mm
2 Shielding 200mm
Process temperature C -40～200℃
H -40～250℃
Process fitting
TG Thread G11/2A FE Flange DN50 PN40
TN Thread 11/2NPT FF Flange DN80 PN40
FA Flange DN50 PN16 FG Flange DN100 PN40
FB Flange DN80 PN16 FH Flange DN150 PN40
FC Flange DN100 PN16 FD Flange DN150 PN16
XX Customized design(including connection mode, size
and pressure, etc.)
Electronics
A 24VDC / (4～20mA) Two-wire
B 24VDC / (4～20mA) Four-wire
C 220VAC / (4～20mA) Four-wire
Cable entry
M M20*1.5
N ½＂NPT
Handheld programmer
A With
B Without
Notes: ①and ② refer to the rods of PTFE, connecting the outer shield made of stainless steel.
Order information
Circuit diagrams

www.jiweimeter.com
Rada-21 is a 25 GHz high-frequency pulse radar level
meter adopting horn antenna, which is dedicated to liquid,
slurry measurements in high temperature and high pressure
environment. Making full use of high-frequency feature of
microwave signals, the horn antenna can be configured with
the diameter of less than 40mm, which is especially suitable
for the level measurement of small container and smaller
waveguide pipe.
design of microstrip line structure, inside which the 25GHz
 Various liquids: Water, Hydrochloric acid, Sulfuric acid,
Nitric acid, Alkaline water, Industrial wastes, Lime slurry,
Cement slurry and food fluid, etc.
 Main industries: Water conservancy, Chemical
engineering, Environmental protection, Food, Building
materials, Medicine, etc.
 Small horn antenna especially for the measurement of
small containers and bypass pipe.
 Multiple echo processing algorithms programmable for a
variety of severe conditions.
 False echo suppression of fixed obstructions.
diagnosis.
Measurable
liquid
Permittivity DK>1.6
Antenna
Type Horn antenna
Materials
316L, 316L wrapped with
PTFE
Measurement
parameters
Transmission
frequency
25GHz
Range 20m
Blind limitation
0.5m(Calculated from the
reference point)
Repeatability ±5mm
Power
DC 24VDC, Max.30VDC
AC 220V, 50HZ
Output
variable
Communication
protocol
HART, PROFIBUS-PA
Fault protection
and keep
Ambient
conditions
Process
pressure
0.1～40bar
Process
temperature
-40℃～250℃
Ambient
temperature
-40℃～80℃
Installation
level
I
Pollution
degree
IV
Approvals
Protection
rating
Type4X NEMA 4X,
Type 6 /NEMA 6, IP68
Explosion-proof
EX d IIC T4,
EX ia IIC T4
Materials
Housing Aluminum
Technical data
Features
Applications
Measuring principle
Overview

Rada-21
Approves
N For EX-free area
Antenna type
1 1.5＂Stainless steel horn
2 1.5＂Stainless steel horn, extend 100mm
3 2＂Stainless steel horn
4 2＂Stainless steel horn, extend 100mm
X Customized design (including the size of
horn and the extension length)
Process temperature
C -40～200℃
H -40～250℃
Process fitting
and pressure, etc.)
Electronics
Cable entry
M M20*1.5
N ½＂NPT
Handheld programmer
A With
B Without
Gas cleaning nozzle/
Anti-dust cover
A With
B Without
Order information
Dimensional drawingsInstallation diagrams
Circuit diagrams

www.jiweimeter.com
Rada-22 is a 25 GHz high-frequency pulse radar level
meter adopting horn antenna, which is dedicated to level
measurement of solid material with range up to 30m. Using a
unique aimer (universal joint), the meter can be applied to the
particularly measured surface of materials through adjusting
its antenna's emission angle and effectively improves the
reliability of sloping solid measurement, especially suitable for
applications in thicker dust and high temperature
environment.
design of microstrip line structure, inside which the 25GHz
 Various solids: Chemical raw materials, Minerals,
cement, Grains, Beans, etc.
 Main industries: Chemical, Electricity, Environment,
Food, Building materials, Pharmaceutical, etc.
 Aimer effectively improving the reliability of the
measurement of sloping solids.
 Multiple echo processing algorithms programmable for a
variety of severe conditions.
 False echo suppression of fixed obstructions.
diagnosis.
Measurable
solid
Permittivity DK>1.6
Antenna
Type Horn antenna
Materials 316L
Measurement
parameters
Transmission
frequency
25GHz
Range 30m
Blind limitation
0.5m ( Calculated from the
reference point)
Repeatability ±5mm
Power
DC 24VDC, Max.30VDC
AC 220V, 50Hz
Output
variable
Communication
protocol
HART, PROFIBUS-PA
Fault protection
and keep
Ambient
conditions
Process
pressure
Max. 0.5bar, or 3bar
(temperature don’t exceed
80 ℃ )
Process
temperature
-40℃～250℃
Ambient
temperature
-40℃～80℃
Installation level I
Pollution degree IV
Approvals
Protection rating
Type4X NEMA 4X,
Explosion-proof
EX d IIC T4,
EX ia IIC T4
Materials
Housing Aluminum
Optional
configuration
Anti-dust cover PTFE
Gas cleaning
nozzle
1/8’’NPT
Technical data
Features
Applications
Measuring principle
Overview

Rada-22
Approves
N For EX-free area
Antenna type
horn and the extension length)
H -40～250℃
Process fitting
and pressure, etc.)
Electronics
Cable entry
M M20*1.5
N ½＂NPT
Handheld programmer A With
B Without
Anti-dust cover
A With/Without
B Without/With
X Without/Without
Order information
Circuit diagrams

www.jiweimeter.com
▼Rada-31 FMCW Radar Level Meter
Rada-31 is a 24GHz frequency modulated continuous
wave (FMCW) radar level meter employing four-wire system
with the range up to 100m. Designed with a high
signal-to-noise ratio, Rada-31 is an ideal solution for extreme
dusty environment, especially suitable for applications
involving harsh conditions, such as the level measurement of
cement, coal powder, fly ash, plastic powder, alumina powder,
etc.
The circuit design of Rada-31 FMCW Radar Level Meter
is based on a voltage controlled oscillator (VCO), by which the
fundamental frequency generated is 24GHz. The radar wave
modulated by strict linear increasing with the bandwidth of
1GHz is transmitted by the PTFE emitter from the end of the
antenna. When the transmitted wave hits the surface of the
measured medium, the wave is reflected back and received
by the same antenna. After Fast Fourier Transform (FFT), the
signal carrying the jumbled array of difference frequencies in
the time domain is converted into a frequency spectrum in the
frequency domain. By identifying the frequency difference
between transmitting and receiving signal that is proportionate
to the flight distance, the distance between the antenna and
the surface of the measured medium can be achieved.
 Various solids: Chemical raw materials, Various
minerals, Cement, Grains, Beans, etc.
 Main industries: Chemical, Electricity, Environment,
Food, Building materials, Pharmaceutical, etc.
 Faster and more reliable data processing achieved by
dual-core processor.
 Range up to 100m.
 Aimer effectively improving the reliability of the
measurement of sloping solids.
 High signal-to-noise ratio and strong anti-interference
capability for the application in extreme dusty
environment.
Measurable
solid
Permittivity DK>1.4
Antenna
Type Horn antenna
Materials 316L
Measurement
parameters
Transmission
frequency
24.2～25.2GHz（FMCW）
Range 100m
Blind limitation
0.35m(Calculated from
the reference point)
Repeatability ≤5mm
Power
DC 24V DC+25/-20%, 6W
AC
120 ～ 230V AC,
±15%(50/60HZ), 6W
Output
variable
Analog output
Optical isolation , 4 ～
20mA
Relay output
maximum 50V, 200mA,
power consumption 5W
Communication
protocol
HART, PROFIBUS-PA
Fault protection
Programmable "high",
"low" and "keep"
Ambient
conditions
Process pressure Max. 0.5bar
Process
temperature
-40℃～200℃
Ambient
temperature
-40℃～65℃
Installation level II
Pollution degree IV
Approvals
Protection rating
Type4X NEMA 4X,
Explosion-proof
EX d IIC T4
EX ia IIC T4
Materials
Housing Aluminum
Optional
configuration
Anti-dust cover PTFE
Gas cleaning
nozzle
1/8’’NPT
Technical data
Features
Applications
Measuring principle
Overview

3
Circuit diagrams

www.jiweimeter.com
Rada-31
Approves
N For EX-free area
Antenna type
horn and the extend length)
H -40～250℃
Process fitting
SA 3＂/80mm
SB 4＂/100mm
SC 6＂/150mm
XX Customized design(including the size
and mspecification)
Electronics
N ½＂NPT
Handheld programmer A With
B Without
Anti-dust cover
A With/Without
B Without/With
X Without/Without
Order information

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