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Despatch LCC/LCD2-14-3 Non Pass Through Series User Manual

Page 65

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18. Connect a calibration instrument with a type J thermocouple output to the

control sensor input.

19. Connect a voltage measurement device to the retransmit output terminals.
20. Set the calibration instrument output to the temperature value of the RetOutLo

parameter from the Control Page.

21. Adjust the RetCalLo * value using the

keys until the voltage measurement

device reads 1VDC.

22. Press the Menu key.
23. Set the calibration instrument output to the temperature value of the RetOutHi

parameter from the Control Page.

24. Adjust the RetCalHi * value using the

keys until the voltage measurement

device reads 5VDC.

25. Press the Menu key.
26. Press the Page key to exit the Sensor Calibration Page.
27. Calibration is now complete. Disconnect the calibration instrument and voltage

measurement device (if used).

28. Verify that the control and high limit sensor thermocouples are connected.


Menu Item

Display

Description

Range

Control Sensor
Cal

Ctrl Sens -100F
Ctrl Sens 1400F
Ctrl Sens Done

Calibrate Sensor Low End
Calibrate Sensor High End
Control Sensor Cal Complete

-100 to 1400°F
-100 to 1400°F
(read only)

HiLim Sensor
Cal

HL Sens -100F
HL Sens 1400F
HL Sens Done

Calibrate HiLim Sensor Low
End
Calibrate HiLim Sensor High
End
HiLim Sensor Cal Complete

-100 to 1400°F
-100 to 1400°F
(read only)

Retransmit Cal

RetCalLo XXXX *
RetCalHi XXXX *

Calibrate Retransmit Output
Low
Calibrate Retransmit Output
High

0 to 4096**
0 to 4096***


*Note that the actual RetCalLo and RetCalHi values displayed are of no importance.