4-20mA Current Signal Generator Constant Current Source


BRT420G-WH 4-20mA current signal generator constant source meter can output stable smooth 4mA to 20mA current signal used for signal calibration in process controlling systems. It has special external shell, can be mounted on the wall or embedded into cabinet or handheld. Its power supply required is 12-24VDC wide range. With pluggable wiring terminal blocks, it is very convenient to use.

SKU: BRT 420G-WH Category:


BRT 420G-WH 4-20mA current signal generator constant source meter output range is 4mA to 20mA. Its output signal displays in the LED meter accurately, and 4-20mA current output is adjustable through the potentiometer knob. That current signal generator can also be used as 4-20mA current signal simulator or constant current source meter.

-Adjustable analog 4-20mA current output simulation.
-Potentiometer adjustment, fast response, no delay.
-Output adjusting step or changing step is 0.1mA, accuracy: 0.1mA.
-Wide range 12-24VDC power supply.
-Output current displays in the LED meter accurately.
-Using wire-wound potentiometer to adjust output, the output is stable and smooth.
-Have dial scale, easy to monitor and check the devices operation status based on dial scale.
-Simplified circuit design, no ripple, stable pure 4-20mA current output.
-Pluggable wiring terminal blocks, easy to do wiring connection.
-Have polarity reverse connection protection circuit, no damages in case of improper connection.
-Wall hanging external shell, refined shape, can be embedded into industrial cabinet or mounted on the wall or handheld.

-Used as 4-20ma constant current source generator.
-Valve adjustment, frequency inverter signal controlling.
-PLC calibration, meters and LED testing .
-Analog transmitter 4-20mA signal output simulation.
– Other analog 4-20mA output simulation required in industrial site or labs.

General Specifications

Output signal:4-20mA current
Output adjustment:wire-wound potentiometer adjusting knob
Power supply:12-24VDC
LED display:display output signal synchronously
Wiring mode:Pluggable wiring terminal block
Accuracy/adjusting step:0.1mA
Protection circuit:input polarity reverse connection protection
Cut-out size:100x60mm (LxW)

4-20mA Output Signal Generator Operations
-Standard 4-20mA current output: rotate the potentiometer knob to get 4 to 20mA current signal output.
-Fixed current signal output: the output signal can be fixed into one point by rotating the knob and use its output signal as constant current, but the current output should not be higher than 20mA.
-Check output signal is normal or not: Using multimeter (DC function) short-circuit connection between current positive and current negative, then check the output value is right or not.

Additional information

Weight0.1 kg
Dimensions10 x 6 x 5 cm


Power supply

12-24VDC ( Regulated 24VDC power supply recommended)



Cut-out Size

100x60mm (LxW)

Packing List

1 Unit x Original 4-20mA Current Signal Generator Constant Current Source

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-More than 5 years practice.
-Various full range.
-MOQ 1 unit.
-Factory direct price.
-24 months warranty.


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