Schneider Electric Pressure Transmitter IAP50S-V

Connect a digital voltmeter and precision resistor in the output loop.

Is the calibration equipment set up as described in the Calibration Setup, page 77?

Perform trim calibration at the following mA outputs

Is the FoxCalTM feature enabled?

Was the transmitter output rezeroed after stabilization at the final operating temperature?

Were the underrange and overrange output values checked to ensure they extend beyond 4 and 20 mA?

Zero Reading Check (DP Transmitters Only)

Ensure the transmitter is stabilized at the final operating temperature.

Is the FoxCalTM feature enabled?

Apply pressure equal to or near the LRV and enter the pressure for the lower trim point.

Apply pressure equal to or near the URV and enter the pressure for the upper trim point.

Perform a single point calibration (zeroing) with a nonzero pressure input if desired.

Check if the underrange and overrange output values extend beyond 4 and 20 mA, respectively.

Remove the device from online operation

Perform a minimum two-point sensor calibration check at the 4 to 20 mA lower and upper range points

Verify that the milliamp output corresponds to the applied pressure within the safety accuracy using the reference milliamp meter

Trim the calibration if necessary to match the calibration points

Return the device to normal operation

Document the test results per the requirements of the application

De-energize transmitters before removing threaded housing covers

Ensure no flammable or combustible atmosphere is present before disconnecting equipment

Remove the vent plug by unscrewing it counterclockwise

Clean the angled sealing surface on the housing

Lubricate the o-ring and the threads on the new plug with silicone lubricant

Install the new plug into the housing by screwing it clockwise

Torque the new plug to 0.9 ±0.02 N-m (8 ±0.2 lbf-in)

Verify the installation of the new plug

Ensure you have the following tools available

Follow the required protocol to remove the device from online operation

Override the milliamp output to the High Failsafe setting

Use the milliamp meter to confirm that the mA output corresponds to 21.0 mA

Override the milliamp output to the Low Failsafe setting

Use the milliamp meter to confirm that the mA output corresponds to 3.6 mA