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How to calibrate a pressure transmitter on the bench
Why Technicians Calibrate at the Bench -
Technicians calibrate at the bench to ensure calibrations are effective and don’t result in degradation of performance. They ensure that all components are in good working order prior to installation, and can evaluate them when component failure is suspected. The bench provides a stable ambient environment for calibration, an opportunity to use the most accurate equipment, and protection from factory conditions during the commissioning, testing, and calibration of pressure transmitters.
To perform the test:
- Connect the transmitter test hose from the calibrator to the transmitter.
- Connect the mA measurement jacks of the calibrator to the transmitter.
- Set the pressure/vacuum selection knob to the necessary function.
- Close the vent knob and supply metering valve.
- Apply pressure or vacuum from the pump by holding down the pump button and release when the necessary pressure is reached.
- Correct the pressure with the fine pressure adjustment.
- Read the reference pressure and the current output of the transmitter from the display.
- Repeat for all test points. If the measured mA signal at the test points is found within tolerance the test is complete. If not, adjustment is required.
Recommended Products
P3000 Pneumatic Deadweight Testers
3130 Portable Pressure Calibrator
Recommended Resources
Pressure calibration applications and solutions - application note
Speak with an expert
Ron Ainsworth is the Business Manager for Process Calibration Tools at Fluke Calibration. After graduating with a degree in physics in 1998, he started in the primary temperature calibration laboratory in American Fork Utah. He has since had roles as a laboratory manager and marketing manager at... Full Bio
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