Calibration Resources
Pressure Gauge Calibration in Singapore: How Often, How It Works, and What the Certificate Shows
Pressure gauge calibration compares your gauge against a reference standard of known accuracy across its range, documents any error, and (where adjustment is possible) corrects it — so the reading you act on can be trusted. For most industrial gauges a 6–12 month interval is sensible, tightening where the measurement is safety- or quality-critical.
Why pressure gauges drift
Pressure instruments rely on mechanical or sensing elements that change over time with pressure cycling, vibration, pulsation, over-pressure events, temperature and ordinary wear. The drift is usually gradual and invisible — which is exactly why scheduled calibration matters: by the time a gauge is "obviously wrong", it has often been quietly wrong for a while.
How pressure calibration is done
The instrument under test is connected to a traceable reference — a deadweight tester or a precision pressure calibrator — and compared at several points across its working range, both increasing and decreasing. The engineer records the error and measurement uncertainty at each point, adjusts the instrument where tolerance allows, and issues a certificate. See our full pressure calibration service for the instruments we cover.
What instruments we calibrate
- Analogue & digital pressure gauges
- Pressure transmitters & transducers
- Pressure switches and vacuum gauges
- Deadweight testers & reference standards
What an accredited certificate must show
- The calibration points and the as-found / as-left readings
- The measurement uncertainty at each point
- Traceability to national standards
- Clear identification of the instrument, calibration date and due date
How often to calibrate a pressure gauge
Start at 12 months for general use and 6 months for critical or heavily-cycled applications, then adjust using the gauge's history. For a fuller treatment, read how often you should calibrate your instruments.
Get pressure calibration in Singapore
In-lab or on-site, with accredited certificates. Request a pressure calibration quote.
Frequently asked questions
How often should a pressure gauge be calibrated?+
For general industrial use, every 12 months is a sensible default; for safety- or quality-critical or heavily-cycled gauges, every 6 months. Adjust the interval based on the gauge's calibration history and your risk.
How is a pressure gauge calibrated?+
The gauge is connected to a traceable reference — a deadweight tester or precision pressure calibrator — and compared at several points across its range, increasing and decreasing. The error and uncertainty are recorded at each point, the gauge is adjusted where possible, and a certificate is issued.
Can pressure gauges be calibrated on-site?+
Yes. Many pressure instruments can be calibrated on-site to avoid downtime and shipping, particularly where they are part of fixed equipment. Some high-accuracy work is best done in the laboratory.
What does an accredited pressure calibration certificate show?+
The calibration points with as-found and as-left readings, the measurement uncertainty at each point, traceability to national standards, and clear identification of the instrument with its calibration and due dates.