The document describes the RBVF series vortex flow meter. It can measure the flow of liquids, gases, and steam through industrial piping. It uses advanced differential techniques and has good anti-vibration performance and signal stability. It has no moving parts, requires low maintenance, and provides high accuracy measurements across a large range. It can be used for applications in energy, industrial production, environmental protection, and transportation where accurate flow measurement is needed.

1. VORTEX FLOW METER FOR LIQUID, GAS, STEAMCARALOGUE
WWW.RBFLOWMETER.COM
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The RBVF series Vortex flow meter is based on
Karman (Carmen) vortex principle research and
production, mainly for industrial piping dielectric fluid
flow measurement, such as gas flow rate of gases (air,
oxygen, nitrogen, coal gas, natural gas, chemical gas,
etc.), liquid, steam and other media. The product adopted
advanced differential technique, together with
measurement of isolating, shielding and filtering, it had
possessed better anti-vibration performance and signal
stability and are used in automatic control system as flow
transmitter.
The RBVF Series Vortex Flow Meter Features:
 No moving mechanical parts
 Low maintenance
 Low pressure loss
 Large measuring range
 High accuracy
 High reliability
 24V, battery or dual power
 Temperature and pressure compensation
The RBVF Series Vortex Flow Meter Specification:
Main Technical data
Fluid Type Steam, Gas, Liquid
Nominal diameter(mm) 25,40,50,65,80,100,125,150,200,250,300, (300~1000 Insert type)
Nominal pressure
(MPa)
DN25-DN200 4.0 (>4.0 clarify),
DN250-DN300 1.6 (>1.6 clarify)
Connection type
Insertion
Flange
Body Material SS304(1Cr18Ni9Ti) or customize
Accuracy
Inline type ±1%R, ±1.5%R,±1FS;
Insert type: ±2.5%R,±2.5%FS
Range of 1:6~1:30
Power supply voltage
Sensor: +12V DC, +24V DC; Transmitter: +12V DC, +24V
Dual power: 24VDC + Battery

2. VORTEX FLOW METER FOR LIQUID, GAS, STEAMCARALOGUE
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Battery: 3.6V
Output signal
Square wave pulse (not including the battery power supply type):
high level or low level5V,1V; current: 4~ 20mA
Protection grade
Standard IP65
Diving type IP68
vibrating acceleration piezoelectric type: 0.2g
capacitance: 1.0~2.0g
Medium temperature
Piezoelectric Type (-50 ~ +260) ℃, (-50 ~ +320) ℃
Capacitive Type -40～300, -40～400，-40～450
Power Supply The three-wire system and the two-wire system
Three-wire System
When using external power supply: 12 ~ 24VDC/30mA (-20% ~
+15%), no output can be as low as 9V
Three-wire System
When battery-powered (optional): Lithium battery 3.6V (2-13Ah) /
0.3mA.
Output Signal Three wire system and two wire system
Transmission distance 3-line pulse: ≤300m
Output: system and two
wire system
2-line
4-20mA
Pulse (except
battery type)
High level≥6V
Low level: ≤1V
3-line RS485
Road resistance ≤750Ω
Ex-proof
EXIB ExdⅡia CT2-CT5
EXD ExdⅡCT2-CT5
Ambient temperature (-30 ~ +55) ℃
Humidity 5%～90%
Atmospheric Pressure 86～106kPa
The RBVT Series Vortex Flow Meter Model Selection
RBVF Series Vortex Flow Meter
Working principle
P
C
Piezoelectric Type
Capacitive Type
Configuration-sensor/transmitter
C Compact type
R-X Remote type with 10m cable, x-m cable
Connection
1 Insertion Type From (DN200- DN1500)
A simple plug-in
B ball valve plug-in

3. VORTEX FLOW METER FOR LIQUID, GAS, STEAMCARALOGUE
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2 Flange Type (DN15 to DN300)
A Wafer（with special carbon steel flange +bolts）
B Flange(SS304)
D DIN
A ANSI
S Others, pls clarify
Fluid Type
L Liquid
S Steam
G Gas
Pipe Size
DNX From DN15 to 1000
Power type
D 24VDC
B Battery
DB 24VAC+Battery
Output
1 Pulse (without display)
2 4～20mA
3 RS-485
4 4-20Ma +Pulse
5 Pulse + RS485
H Hart
Temperature- Piezoelectric Type
1 (-50 ~ +260) ℃
2 (-50 ~ +320) ℃
Temperature-Capacitive Type
3 -40～300
4 -40～400
5 -40～450
Pressure
16 1.6MPa
25 2.5MPa
40 4.0MPa
S Special
Proof
N No
EXIB ExdⅡia CT2-CT5
EXD ExdⅡCT2-CT5
Protect Class
5 IP65
8 IP68
RBVF X X X X X X X X X X X

4. VORTEX FLOW METER FOR LIQUID, GAS, STEAMCARALOGUE
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Other technical data:
chart(II) extent table of reference condition under working condition
Tips：above table the caliber (300)～(1000) is plug-in
table(III) the density of common gas under normal state（0℃，absolute pressure
P=0.1MPa）
name density (kg/m3) name Density meter
(kg/m3)
air(dry) 1.2928 acetylene 1.1717
nitrogen 1.2506 ethylene 1.2604
oxygen 1.4289 propylene 1.9140
argon 1.7840 methane 0.7167
Ne 0.9000 ethane 1.3567
ammonia 0.7710 propane 2.0050
hydrogen 0.08988 butane 2.7030
carbon monoxide 1.97704 natural gas 0.8280
Carbon Dioxide 1.3401 Coal gas 0.8020
caliber
(mm)
liquid gas
range(m
3
/h)
Output
frequency range
(Hz)
measurement
range (m
3
/h)
Output
frequency range
(Hz)
25 1.2～16 25～336 8.8～55 190～1140
40 2～40 10～200 27～205 140～1040
50 3～60 8～160 35～380 94～1020
80 6.5～130 4.1～82 86～1100 55～690
100 15～220 4.7～69 133～1700 42～536
150 30～450 2.8～43 347～4000 33～380
200 45～800 2～31 560～8000 22～315
250 65～1250 1.5～25 890～11000 18～221
300 95～2000 1.2～24 1360～18000 16～213
(300) 100～1500 5.5～87 1560～15600 85～880
(400) 180～3000 5.6～87 2750～27000 85～880
(500) 300～4500 5.6～88 4300～43000 85～880
(600) 450～6500 5.7～89 6100～61000 85～880
(800) 750～10000 5.7～88 11000～110000 85～880
(1000) 1200～ 5.8～88 17000～170000 85～880
>(1000) agreement agreement

5. VORTEX FLOW METER FOR LIQUID, GAS, STEAMCARALOGUE
WWW.RBFLOWMETER.COM
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Overall dimension installing of meter：SEE（V）&（VI）
The RBVF Series Vortex Flow Meter Applications:
 Energy Measurement: Energy into primary energy (coal, crude oil, coal
bed methane, LPG and natural gas), secondary energy (electricity, coke,
artificial gas, refined oil, liquefied petroleum gas, steam) and energy
carriers working fluid (air, oxygen, nitrogen, hydrogen, water);
 Industrial Production: Widely are used in metallurgy, electric power,
coal, chemical, petroleum, transportation, construction, textile, food,
medicine, agriculture, environmental protection and people's daily life,
and other fields of national economy, the development of industrial and
Ensure meter for Installing, design & caliber

6. VORTEX FLOW METER FOR LIQUID, GAS, STEAMCARALOGUE
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agricultural production, energy conservation, improve product quality an
important tool to improve economic efficiency and management level
plays an important role in the national economy.
 Environmental Protection: Flue gas emissions, waste, sewage and other
heavily polluted air and water, a serious threat to the human
environment. National sustainable development as a national policy,
environmental protection will be the biggest problem of the 21st
century. Pollution of air and water to be brought under control, we must
strengthen management, and infrastructure management is a quantitative
amount of pollution control.
 Transportation: There are five ways: Railway road, air, water, and
pipeline transport. Wherein the pipeline transport, although it has long
been, but the application is not common. With the outstanding
environmental issues, pipeline transport characteristics attracted people's
attention. Pipelines must be equipped with the meter, it is the control,
allocation and scheduling eyes, is also not safe and economic accounting
supervisor essential tool.