Despatch MIC1162 Hi-limit - Manual (Page 33)

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SECTION 9: CALIBRATION
NOTE: Calibration should be attempted only on instruments on which calibration errors
have been encountered (see calibration check).
EQUIPMENT REQUIRED:
1.
Input source with accuracy better than +/- 0.05% of reading.
a. Thermocouple: T/C simulator, K type with compensated leads
b.
DC: 0 to 50 mV OR
0 to 10 V OR
0 to 20 mA
c.
RTD: Decade resistance box with 3 wire input
2.
MIC1162 case wired for appropriate input voltage supply (90 to 264 VAC, 50/60
Hz)
PROCEDURE:
1.
Before applying power, position the input conditioning jumpers on the CPU PWA
as appropriate. See Figure A-1 and A-2 in Appendix A.
2.
Connect the appropriate input from the Input Source. Set the Input Source as
follows:
INPUT TYPE
INPUT SOURCE
DC 0 - 50 mV
50 mVDC
DC 0 - 10 V
10 VDC
DC 0 - 20 mA
20 mADC
RTD
200 ohms
T/C (Type K)
0
°
C
3.
Apply power to the instrument and leave powered for five (5) minutes for RTD
and DC inputs OR thirty (30) minutes for T/C inputs, then power down.