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Voltage and current simulator

Voltage and current simulator

  • $495.00

These REED VC04 battery operated Voltage/mA source with automatic calibration function, are able to generate current and voltage test in an electrical circuit with a great ±0.05% accuracy.

REED VC 04 Features

  • Sources voltage and current
  • 5-digit LCD readout
  • Automatic calibration
  • User selectable auto power-off
  • Selectable step or ramp outputs
  • Includes test leads, alligator clips, protective holster, soft carrying case

REED VC04 Specifications

  • DC Voltage Range: 10V
  • Output Range: 0.00 to 11.000V
  • Resolution: 1mV
  • Accuracy: ±0.05% setting
  • DC Current Range: 20mA
  • Output Range: 0.000 to 22.000mA
  • Resolution: 0.001mA
  • Accuracy: ±0.05% setting + 4µA
  • Analog Transducer: -20mA
  • Output Range: 0.000 to -22.000mA
  • Resolution: 0.001mA
  • Accuracy: ±0.05% setting + 4µA
  • Loop Power: 24V
  • Accuracy: ±10%
  • Power Supply: Single 9V alkaline battery
  • Battery Life: Approx. 12 hours
  • Dimensions: 200 x 100 x 40mm w/ holster
  • Weight: 550g w/ holster

For any other calibrating process please navigate into our Reed Calibrators category and choose the right model for you.

How to use Reed Voltage and current simulator (model VC04)

Power-on/off of Calibrator
To turn on the power supply of Reed VC 04 voltage and current simulator by pressing the power key. Now the instrument starts a quick self-diagnosis internally test and the full screen is in display. After this short period of time, appropriate operation should be carried out. With the Automatic power-off function active, if there is no operation of the calibrator within a period of 10 minutes after power-on it will cut off the power supply automatically. You can deactivate this function any time.

DC voltage output
Before starts voltage output, you need to connect one end of the test lead into the VC04's output jack and insert the other end to the input of your instrument that will be tested. The instrument starts a quick test and if all will be fine, will display “OUTPUT” symbol on its LCD display. Now the calibrator is in an output state. Using the arrow keys you can choose the set digits for output and change the value of the set digits. Press the key?ON/OFF?to turn on or turn off the output, and the display indicates the symbol ‘ON’ or ‘OFF’.

The appropriate output terminal of the calibrator produces the DC voltage and current set by the user or simulating a transmitter. During the operation, do not apply voltage to the output terminal. If any improper voltage is applied to the output terminal, it will cause damage to the internal circuit.

DC current output
Insert one end of the test lead into the +mA- output jack of the calibrator and connect the other end to the input of the user’s instrument. Press the key?V/mA?to select the mA function and display the unit ‘mA’.Press the key?mA/ %?to select the output to be set in mA or % and display the unit ‘mA%’, in which 0% is 4mA and 100% is 20mA.Using the arrow keys you can choose the set digits for output and change the value of the set digits. Press the key ?ON/OFF? to turn on/off the output followed by displaying the symbol ‘ON’ or ‘OFF’.

25% of step current output
After you have connected the test leads in the same way as any DC current output tests, select the mA function by pressing the (V/mA) key and choose 'mA" or "mA%" scale. Using the Reed VC04's arrows keys change the output value of 25% in which 0% denotes 4mA and 100% denotes 20mA. Now press the key?mA 25% again to exit the step current output. You can turn on or off the output by using the (ON/OFF) button.

Simulating Transmitter output (absorption current)
Connect one end of the test lead into the XMT output jack of the calibrator and the other end to the input of the user’s instrument and the power supply as shown in the following diagram. The key operation is the same as that of DC current output in subsection 5.2.
Please note that the range of power supply is from 5 to 25VDC. During the operation at the current output, try your best to use an external 24VDC power source in a mode of connection with a transmitter, thus being able to prolong the battery life.

In order to keep the designed accuracy of the calibrator, it is recommendable to calibrate your calibrator once a year.

Calib.Item Standard Equipment Input Range Accuracy
DCV 10V Digital meter Max.11v ± (10ppm+50µv)
DCA 20mA Digital meter Max.22mA ± (50ppm+0.4µA)


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