West Control Solutions MRC 9000 - Manual (Page 224)

Edition 3
Rev G 11-2 Section 11
11.1 INPUT CALIBRATION
This routine allows for the calibration of all input channels and all input types.
Important Notes:
1. The calibration information is stored on each input board for all input types in an Electrically Erasable
Programmable Read Only Memory (EEPROM). The instrument and every input board supplied to the
field is shipped from the factory calibrated for each input type.
2. Recalibration should only be performed if it is determined that the Recorder is outside of the operating
specifications for the instrument itself (without considering the input source). Input Correction should be
used to correct for Input Signal inaccuracies.
3. If recalibration is necessary, it is only required for the particular input type and range that is being
used.
Step 1
With INPUT CALIBRATION in the lower display line, press the to enter the Input Calibration. The upper
display line will display CALIBRATE INPUT and the lower display line will display IV1. If an input other than input
1 is to be calibrated, use the MOD, LEFT, SCROLL, UP or DOWN as required to select the proper input number,
then press the .
Step 2
Press the and the upper display line will display IVx CAL BOARD TYPE (x = input number selected) and
the lower display line will display TC/VOLT. If the input to be calibrated is TC/VOLT/mA, press the to move
to the next step. If the input to be calibrated is RTD, press , then F5, then .
Step 3
IVX CAL WHAT RANGE should be in the upper display line and OFF - NO INPUT should be in the lower display
line. To calibrate, press the , then UP, DOWN, LEFT, SCROLL as required to select the input range to be
calibrated per Table 11-2, then press .
TABLE 11-2 RANGE SELECT
Select IF Input Is
TC WIDE TC and not T, R, S, or B
TC NARROW TC and other than above
RTD RTD
mA CURRENT
25 mV mV and maximum is 25 mV or less
100 mV mV and maximum is 100 mV or less
1 VOLT Volt and maximum is 1 Volt or less
10 VOLT Volt and maximum is 10 Volts or less