All job plans
InstrumentationPreventiveCorrectiveGeneral
Pressure Transmitter Calibration Check
Verify and adjust field pressure transmitters against a calibrated reference.
Estimated time
1.5 hours
Craft required
1 technician(s)
Skill level
journeyman
Procedure steps
- 1
Place loop in manual / bypass as required
~10 min - 2
Isolate transmitter and connect calibrator
~15 min - 3
Apply 0%, 50%, 100% span; record as-found
~25 min - 4
Adjust zero/span if out of tolerance; record as-left
~20 min - 5
Return to service and verify DCS reading
~10 min
Safety notes
- Isolate process impulse lines before opening
- Bleed trapped pressure
Tools
- • Hand pump / calibrator
- • HART communicator
- • Multimeter
Parts
- • Isolation valve seals
- • Impulse tubing fittings