Calibrating an analog pressure gauge ensures its readings align with known pressure standards, maintaining measurement accuracy. Here's a step-by-step guide:

1. Preparation:

• Gather Equipment: You'll need a reference pressure source (like a deadweight tester), a precise reference pressure gauge, necessary adapters, and calibration documentation tools.

• Safety Measures: Wear appropriate personal protective equipment (PPE) and ensure the pressure system is depressurized before starting.

2. Setup:

• Connect the Pressure Source: Attach the reference pressure source to the analog pressure gauge using suitable adapters.

• Install the Reference Gauge: Connect the reference pressure gauge in parallel to the analog gauge for direct comparison.

3. Calibration Process:

• Apply Known Pressures: Gradually apply known pressures using the reference source, covering the analog gauge's full range.

• Record Readings: At each pressure point, note the readings from both the analog and reference gauges.

• Compare and Adjust: If discrepancies exist, adjust the analog gauge according to the manufacturer's guidelines to align its readings with the reference gauge.

4. Verification:

• Repeat Measurements: After adjustments, reapply pressures to verify the analog gauge provides accurate readings across its range.

• Document Results: Record all readings, adjustments, and final calibration outcomes for future reference.