Field Check Procedure
Configure the Gauge
Press Mode until the display shows pressure (Pa) on both channels (PrA & PrB).
Turn Auto Zero off to stabilize readings during the test.
Connect Channels A & B
Attach a single clean tube between Input A and Input B (or both reference ports).
Readings should match within 2%; this confirms both the tube and gauge ports are working properly.
Repeat for Other Tube Combinations
Test the same way using different tubes (yellow, blue, green, etc.) and different port pairings.
Any channel deviation or rapid drop indicates a blocked, pinched, or leaking tube or a faulty port.
Why this Matters
Tube issues are common. Water, kinks, or loose fittings often cause significant error—much more than gauge drift alone.
A quick weekly check or before every critical test avoids starting with faulty equipment.
These tests isolate whether the gauge or tube is malfunctioning—helping you correct the issue on-site.
Troubleshooting
If pressure drops rapidly:
- Replace or re-route the tube.
If readings differ >2%:
- Swap the tube alone; if still off, try another port to identify the issue.
- If all tubes fail, the gauge may need factory recalibration.
