West Control Solutions MRC 5000 Controller Manual - Manual (Page 23)

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3=Milliamp for all milliamp ranges.
4=RTD for all RTD ranges.
5=Cold Junction Compensation for all T/C ranges.
After selecting the proper range code, depress the SCROLL key and rEF should be displayed.
With rEF displayed, depress the SCROLL key to display the value for the source to be connected. Connect the input source
set for this value to the selected input terminals. After connecting the source, depress the SCROLL key and SCAn should be
displayed. When rAng selected is 5, connect the J type thermocouple to the input terminals. Position the "HOT" junction
outside the enclosure with the mercury thermometer position along side. Using the UP or DOWN keys, make the display
match the reading seen on the mercury thermometer.
With SCAn displayed, depress the SCROLL key. The display will count up in seconds, denoting that it is proceeding with the
calibration. When the calibration is complete, the display will show PEn.
With PEn displayed, depress the SCROLL key to select another pen, or UP to return to inP.
If something fails in the process, FAIL will be displayed. Depress any key to return to the inP display.
The reference values needed to calibrate each input type are as follows:
CODE REFERENCE VALUE
1-millivolt/TC 50.00mV
±
0.01mV
2-volt 5.00 Volts
±
0.01V
3-milliamp 20.00mA
±
0.01mA
4-RTD 200.0ohms
±
0.01%
5-T/C AMBIENT
5.2 CHART/PEN CALIBRATION - Chrt
This Cal section calibrates the pens to the chart, and is divided into two additional sections: PEn and ArC. PEn calibrates the
pen spans to the chart. ArC provides a capability to make the pens sweep the chart to facilitate mechanical adjustments of
pen arms.
PEN SPAN CALIBRATION - PEn
With Chrt in the display, press DOWN to enter the Chart calibration section and PEn will be displayed. Depressing the
SCROLL key will toggle between PEn and ArC. With PEn in the display, press DOWN to enter the Pen Span calibration
section. Each pen will home (move downscale), and the display will blank (this could take as long as 20 seconds). The
display will show P1Lo.
With P1Lo displayed, Pen 1 will be positioned at the low end of the chart. Use UP or DOWN to position Pen 1, the red pen, on
the inner ring of the chart. Press SCROLL when done.
The display will now show P1Hi and the red pen will go to the outer ring of the chart. Again, use UP or DOWN to adjust the
pen. Press SCROLL when done.
If Pen 2 is included, the same process must be repeated for Pen 2, the green pen. After P2Hi is completed, depressing
SCROLL will return to PEn.
If Pen 2 is not included, press SCROLL twice to skip P2Lo and P2Hi calibration, and return to PEn.