Red Lion TSC - Manual (Page 86)

Thermocouple Cold Junction Calibration (CJC)
This procedure must be performed AFTER an accurate mV calibration.
Place the internal input sensor selection jumper to “TC” position. Place
precision thermometer (accuracy of 0.1C) in the immediate vicinity of
terminals #9 and #10.
Display Parameter Description/Comments
CJ F Cold junction Allow 5 minutes for temperatures to equalize.
CJ C temperature Observe indicated cold junction temperature
and compare with precision thermometer. If
equal press PAR. If not equal, directly key-in
the correct cold junction temperature. Press
PAR.
RTD Ohms Calibration(rtd)
This procedure must be performed AFTER an accurate mV calibration.
Place the internal input sensor selection jumper to “RTD” position. Connect
one leg of precision resistance (accuracy of 0.1 ohm) to terminals #8 and #9
together, and other leg to #10.
Display Parameter Description/Comments
Rtd1 0.0 ohms step Connect 0.0 ohms resistance (jumper
wire), wait ten seconds, press PAR.
Rtd2 277.0 ohms step Connect 277.0 ohm resistance, wait ten
seconds, press PAR.
Analog Output Calibration (ANCL)
4 to 20 mA
Press PAR until ANCL appears in the display. Connect precision ammeter
(0.1% accuracy) to rear terminals (+) #11 and (-) #12.
Display Parameter Description/Comments
ANC1 Analog output 4 mA
code value
Observe current reading. If 4.00 mA,
press PAR. If not equal, modify existing
code value using up and down buttons
to achieve 4.00 mA. Press PAR.
ANC2 Analog output 20 mA
code value
Observe current reading. If 20.00 mA,
Press PAR. If not equal, modify existing
code value using up and down buttons
to achieve 20.00 mA. Press PAR.
Analog Output Calibration (ANCL) (Cont’d)
0 to 10 VDC
Press PAR until ANCL appears in the display. Connect a precision
voltmeter (0.1% accuracy) to rear terminals (+) #11 and (-) #12.
Display Parameter Description/Comments
ANC1 Analog output 0 VDC
code value
Observe voltage reading. If 0.00 VDC,
press PAR. If not equal, modify existing
code value using up and down buttons
to achieve 0.00 VDC. Press PAR.
ANC2 Analog output 10 VDC
code value
Observe voltage reading. If 10.00 VDC,
Press PAR. If not equal, modify existing
code value using up and down buttons
to achieve 10.00 VDC. Press PAR.
-84-