Calculate the output in mA of Electronics D.P Tx. When applied a D.P of 125 inches of water gauge, knowing that the range is 0 to 300 inches of WG?

Field Instrumentation Calibration
1

Calculate the output in mA of Electronics D.P Tx. When applied a D.P of 125 inches of water gauge, knowing that the range is 0 to 300 inches of WG?

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2

To calculate the output current in mA for an electronic differential pressure transmitter (D.P Tx) with a range of 0 to 300 inches of water gauge (WG), you can use the following formula:

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Where:

  • ( DP ) is the differential pressure applied.
  • ( LRV ) is the lower range value, which is 0 inches of WG in this case.
  • ( URV ) is the upper range value, which is 300 inches of WG.
  • ( Span ) is the difference between the maximum and minimum output current, which is typically 16 mA (20 mA - 4 mA for a 4-20 mA transmitter).

Given that the applied ( DP ) is 125 inches of WG, the calculation would be:

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So, the output current would be 10.667 mA when a differential pressure of 125 inches of WG is applied to the transmitter.

3

Refer the below online calculator link