The document is a catalog for the RBEFC electromagnetic flowmeter converter. It provides specifications for the converter including its features, applications, technical data, accuracy levels, output options, and electrical isolation capabilities. The converter is used with a magnetic-inductive sensor to form an accurate flow measurement unit for fluid flow speeds up to 15 m/s. It has programmable excitation, digital processing, and a user-friendly interface.
Usually, an RS232 - RS485 converter is the preferred way to establish multi-point networks when working with RS232 devices. This is a method for connecting multiple RS485 devices with each other over a two-wire network. However since only a true RS485 network can have addressable serial RS485 devices, the RS232 converter needs to be addressable either by software or by DIP switches when using it in this type of configuration.
Usually, an RS232 - RS485 converter is the preferred way to establish multi-point networks when working with RS232 devices. This is a method for connecting multiple RS485 devices with each other over a two-wire network. However since only a true RS485 network can have addressable serial RS485 devices, the RS232 converter needs to be addressable either by software or by DIP switches when using it in this type of configuration.
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IC Component(ic-component.com) shares the AD654 datasheet for free. If you need to purchase stock AD654 series chips, please contact hello@ic-component.com
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Datasheet Fluke Electrical Power Standard. Hubungi PT. Siwali Swantika 021-45...PT. Siwali Swantika
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Canopus Instruments are the manufacturers and suppliers of thermocouple signal converter, thermocouple transmitter 4-20ma, thermocouple to 4-20ma converter, k-type thermocouple to 4-20ma transmitter. http://www.canopusinstruments.com/product/industrial-automation-product/signal-conditioning-isolation/thermocouple-converter-sm-13/
IC Component(ic-component.com) shares the AD654 datasheet for free. If you need to purchase stock AD654 series chips, please contact hello@ic-component.com
Elevate your water treatment game with our Intuition-9™ Series Controllers Brochure. Explore cutting-edge technology and features designed to enhance water quality control. Download now for a smarter, more efficient water treatment solution.
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5½-digit DMM with twin A/D converters
offering two-channel synchronous measurement
● New measurement environment by twin A/D converters
● Double the throughput by Ach/Bch synchronous measurement
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● Wider current measurement range and parallel measurement with voltage or temperature
Ach: 10pA to 2A Bch: 100µA to 10A
● A variety of interfaces
7352A: USB, GPIB, RS-232 7352E: USB
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2. www.rbflowmeters.com
Electromagnetic Flowmeter Converter
(Model: RBEFC)
1 General Specification and Application
1.1 Features
Programmable low frequency square wave field excitation, improving measurement
stability and reducing power consumption
Implementing 16 bits MCU, providing high integration and accuracy
Full-digital processing, high noise resistance and reliable measurement
Low EMI switching power supply, providing wide mains range adaptability, high efficiency
and low temperature rising
User-friendly operation interface
High definition LCD display with backlight and -20℃ - +70℃ temperature range
Forward and reverse measurement
Three independent 10-digit totalizer: forward, reverse and net totalizer, convenient for
metering or billing
RS485 interface supporting up to 2km distance at 14400 bps communication
Intelligent empty pipe detection and electrodes resistance measurement diagnosing empty
pipe and electrodes contamination accurately.
Implementing ‘Rate-Of-Change Limit’ technology to eliminate sharp electrical noise
contained in the flow signal and stabilize the display and outputs
Totalizer remote control function, providing a contact for starting and stopping totalizing
which is convenient for calibration synchronization or batch processing
System self-diagnosis function
Non-volatile memory, securing parameter settings and measurement data
Optional real-time clock, power-failure and history data logging function ,storing up to 30
days measurement records
Two versions available: remote and compact
3. Catalog of Electromagnetic Flowmeter Converter (Model: RBEFC)
1
1.2 Main Application
The RBEFC converter, together with magnetic-inductive sensor, forms a
microprocessor-controlled accurate measurement unit. The RBEFC converter can be used for
fluid flow speeds up to 15 m/s for a minimum conductivity of 5S/cm. The main application
range of the RBEFC widely covers a variety of fields:
Chemical and petroleum industry
Metallurgy industry
Water and waste water
Agriculture and irrigation
Food and beverage industry
Pharmaceutical industry
1.2.1 Working Conditions
Ambient temperature: -10 to + 60℃;
Relative humidity: 5% to 90%;
Power supply: AC 85 to 265V, 45 to 63Hz
DC 16 to 30V
Power consumption: < 15W with sensor
1.2.2 Testing Condition
Ambient temperature: 20 ±2℃ ℃
Relative humidity: 45% to 85%
Power supply: AC 220±2%
Power frequency: 50Hz±5%
Ripple: < 5%。
Warming time: 30min
2 Technical Data
The RBEFC converter is compliant to Standard “JB/T 9248-1999 Electromagnetic Flow
Meter”.
2.1 General Specification
2.1.1 Meter Size (mm)
The RBEFC converter supports the following meter size:
3, 6, 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500,
600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1600, 1800, 2000, 2200, 2400, 2600, 2800,
3000
4. Catalog of Electromagnetic Flowmeter Converter (Model: RBEFC)
2
2.1.2 Flow Range
The RBEFC is capable of measuring flow speed from 0.3m/s to 15m/s. The minimum
measurable speed can be one percent (1%) of the full range.
2.1.3 Accuracy
The RBEFC converter combined with sensor is tested under testing condition mentioned
above. The accuracy is given in Table 2.1
DN
mm
Flow Range
m/s
Accuracy
3
to
20
< 0.3
±0.25%FS
0.3 to 1 ±1.0R
1 to 15 ±0.5%R
25
to
600
0.1 to 0.3 ±0.25%FS
0.3 to 1 ±0.5%R
1 to 15 ±0.3%R
700
to
3000
< 0.3 ±0.25%FS
0.3 to 1 ±1.0%R
1 to 15 ±0.5%R
%FS: error of full span; %R: error of rate
Table 2.1 Accuracy of the RBEFC converter
2.1.4 Repeatability
Repeatability error < ±0.1%.
2.1.5 Current output
Current output: fully-isolated 0 - 10mA / 4 - 20mA
(a) Load resistance: 0 - 10mA, 0 to 1.2kΩ;
4 - 20mA, 0 to 600Ω.
(b) Basic error: add ±10μA on top of the measurement error
2.1.6 Frequency Output
Frequency output is proportional to the flow percentage of the full range. The RBEFC
provides fully isolated transistor open collector frequency output ranged from 1 to 5000 Hz. The
external DC power supply should not exceed 35V and maximum collector current is 250mA.
5. Catalog of Electromagnetic Flowmeter Converter (Model: RBEFC)
3
2.1.7 Pulse Output
The converter can output up to 5000cp/s pulse series, which is dedicated to external
totalization. Pulse factor is defined as volume or mass per pulse. It can be set to 0.001L/p,
0.01L/p, 0.1L/p, 1L/p, 2L/p, 5L/p, 10L/p, 100L/p, 1m3
/p, 10 m3
/p, 100 m3
/p or 1000 m3
/p. Pulse
width is selectable from auto, 10ms, 20ms, 50ms, 100ms, 150ms, 200ms, 250ms, 300ms, 350ms
and 400ms. Photo-coupler isolated transistor open collector circuit is used for pulse output. The
external DC power supply should not exceed 35V and maximum collector current is 250mA.
2.1.8 Flow Direction Indication
The RBEFC converter is capable of measuring both forward and reverse flow and
recognizing its direction. The converter outputs 0V low level for forward flow, while +12V
high level for reverse flow.
2.1.9 Alarm Output
Two channels of photo-coupler isolated open collector circuit are used for alarm signal
output. There are two alarm outputs: high limit alarm and low limit alarm. The external DC
power supply should not exceed 35V and maximum collector current is 250mA.
2.1.10 Communication
The RS485 or RS232C communication interface is embedded in the converter and supports
data transfer up to 2km at 14400bps. Surge absorber is optional to protect the interface and
converter.
2.1.11 Damping Constant
Damping time is selectable from 0.2 to 100s.
2.1.12 Electrical Isolation
The isolation voltage between analog input and analog output is not less than 500V;
The isolation voltage between analog input and alarm power supply is not less than 500V;
The isolation voltage between analog input and AC power supply is not less than 500V;
The isolation voltage between analog output and AC power supply is not less than 500V;
The isolation voltage between analog output and earth is not less than 500V;
The isolation voltage between pulse output and AC power supply is not less than 500V;
The isolation voltage between pulse output and the earth is not less than 500V;
The isolation voltage between alarm output and AC power supply is not less than 500V;
The isolation voltage between alarm output and the earth is not less than 500V.
2.1.13 Input Contact
External contact ON (close) or OFF (open) signal can be used to remotely control the
start/stop or reset of internal counter.