MANUAL P/N 316005 REV: B
41
Figure 3-3 Thermocouple Gauge Pressure Analog Output
3.5 Thermocouple Gauge Calibration
3.5.1 Zero Adjustment (VAC)
1.
Evacuate the system to a pressure less than 1 x 10
-3
Torr.
2.
With the gauge tube operating, adjust the VAC potentiometer until "0 0" shows in the display.
Note that if the adjustment is turned too far below zero, a minus sign ("0 -0")will appear in the display.
Thus proper zero calibration is achieved when only the "0 0" appears.
Figure 3-4 Thermocouple Gauge Modules, Front Panel
3.5.2 Atmosphere Adjustment (ATM)
Calibration at atmosphere is performed at the factory and should not normally be attempted by the user.
However, the following procedure can be used to recalibrate the Atmosphere pressure reading.
Содержание Granville-Phillips Convectron 316 Series
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