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5.7 Setup: Pressure Sensor, Calibration
The FilterTec Plus has built in calibration curves for the SciPres disposable pressure sensors
that are inherently very accurate for the installed default range of 0 – 60 psi, and there should
be no need for you to change it. If your metrology department insists that they calibrate them
periodically, the procedure follows.
To calibrate the FilterTec Plus / SciPres Disposable Sensors:
1. Obtain a NIST traceable regulated source of compressed gas (i.e. air, nitrogen) and
pressure gauge.
2. Go to Mode Select; Setup; Pressure Sensor, then to Pressure: Range, and note the range
specified, change if desired. (Default is 60 psi.)
3. Press Exit and scroll to Pressure: Zero.
4. Choose P1.
5. With no pressure on the sensor, press Zero (“A” button).
6. Connect regulated pressure source to P1, and carefully increase to match range noted in
step 2.
NOTE: Pressurizing the SciPres Sensors beyond 60 psi can damage the sensor.
7. Press Span (“B” button).
8. Turn off pressure source, Press exit.
9. Repeat steps 5 – 8, choosing P2 and then P3.
10. You have now recalibrated (spanned) all 3 SciPres sensors. It is still advisable to zero each
sensor again with no pressure in the system, prior to running your tests via the Edit: Press.
Sensor menu in the operating mode of choice.
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