Calibrating Temperature Sensors; Sensors - Conair Thermolater vacuTrac User Manual

C
ALIBRATING
T
EMPERATURE
S
ENSORS
Special Tools Needed:
❒ type K thermocouple
calibrator
5-10
M
AINTENANCE
TW-1 and TW-2 Thermolators use type "K" thermocouples to
sense the temperature in the return and supply process lines.
These thermocouples should be calibrated annually, or when a
new thermocouple is installed, to ensure correct operation.
The Thermolator's Calibration Mode provides zero and span
calibration of both the supply and return line thermocouples.
You access the Calibration Mode while in Test Mode.
1
Enable Test Mode.
See P S
ERFORMING
2
Press any button to display the first test menu.
3
Select the Calibration Mode menu.
Press and hold the Setpoint
to each test menu until the controller indicates "SC.L" in
the Actual display.
Release the Setpoint
4
You are now in calibration mode. Each press and release
of this key will exit the current calibration and start the
next calibration. The table below lists the calibrations that
will be performed.
CALIBRATION
Zero Calibrate Supply Sensor
Zero Calibrate Return Sensor
Span Calibrate Supply Sensor
Span Calibrate Return Sensor
5
Using the thermocouple calibrator, apply the
appropriate temperature to the control input.
Thermolator TW-1 and TW-2
T .
YSTEM ESTS
key for 3 seconds to index
key.
SETPOINT
DISPLAY
32° F (0° C)
32° F (0° C)
510° F (266° C)
510° F (266° C)
Continued on next page
ACTUAL
DISPLAY
SC.L
rC.L
SC.H
rC.H
UGH015/0100