MNL000425.doc
Revision 0
08/26/2016
© Versum Materials, Inc. as of the revision and date shown. All rights reserved.
Confidential and Proprietary Data
Page
-
4
requires a traceable (NIST) ohm meter with accuracy to 50 milliohms to
measure the resistive settings on the PCA (1 resistive reading per
connector).
Connect leads to meter together and null the lead impedance. Connect one lead
to pin 7 and the other lead to Pin 6 of each the three connectors and verify
correct resistive values to within 50mΩ. If values are within calibration, PCA can
be used to calibrate VaporGuard® RTD circuit.
O # # # # G # # # # L N
# # # #
V 0 . 5 6 3
T
2 1 . 0 0 º C
9.
Remove the temperature calibration PCA from P7A and install at P7B. Read the
display to verify a temperature of 27.3ºC. If the display reads 27.3ºC±0.2ºC,
then skip to step 10.
10.
If it does not read 27.3ºC within the tolerances, adjust the gain potentiometer
until it does. The gain potentiometer is designated on the display by the “G”.
Use the left or right arrow to move the cursor to the desired potentiometer
parameter. Use the up or down arrow to change the potentiometer parameter.
11.
Remove the temperature calibration PCA from P7B and install at P7C. The
display should read 79.2ºC. Read the display to verify a temperature of 79.2ºC.
If the display reads 79.2ºC±0.2ºC, then skip to step 12.
12.
If it does not read 79.2ºC within tolerances, adjust the linearization potentiometer
until it does. The linearization potentiometer is designated on the screen by the
letters “LN”.
13.
Return the temperature calibration PCA back to P7A and repeat steps 6 through
11 until all readings are obtainable without adjusting the digital potentiometers.
14.
The temperature control circuit is now calibrated. Press the red “X” key to exit
this menu. The display will prompt the user to press the green “√” to save the
settings.
15.
Reinstall probe.
