MNL000425.doc
Revision 0
08/26/2016
© Versum Materials, Inc. as of the revision and date shown. All rights reserved.
Confidential and Proprietary Data
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This VaporGuard® uses digital potentiometers to calibrate the electronics. There is no
reason to open the enclosure because there are no mechanical potentiometers in this
design. All circuit calibration adjustments are accomplished through the LCD keypad of
the Source Cup Assembly.
The stainless steel level detection can be calibrated. The quartz level sensors can only
be verified. If the quartz level sense circuit does not work, the Source Cup Assembly
must be sent back to Versum Materials, Inc. for repair/replacement.
Figure 7‐1
Temperature Calibration PCA, P/N 146617
1.2.3
Temperature Calibration Procedure
The calibration requires the Source Cup Assembly display to adjust the offset, gain and
linearity potentiometers of the RTD circuit. The user should validate the accuracy of the
RTD PCA on each connector using a calibrated ohm meter. Pins 6 & 7 on all
connectors should have the following ohm values;
P7A = 1005.07Ω +/- 0.02Ω
P7B = 1106.19Ω +/- 0.02Ω
P7C = 1305.91Ω. +/- 0.02Ω
Measure all connectors at pins 6 &7 to insure the PCA is within calibration. Once
verified, you may begin testing the equipment.
