West Control Solutions MRC 9000 - Manual (Page 223)

Edition 3
Rev G
Section 11 11-1
Section 11 - Calibration
Calibration describes all possible field calibration procedures for the recorder as well as methods of invoking
default program and calibration values. The procedures described include the input and range calibration as well
as chart calibration.
From the Normal Display, press the until CALIBRATION appears in the lower display line. If PASSWORD
appears in the lower display line, the correct "password" will need to be entered before access to Calibration is
allowed. If CALIBRATION is not displayed, then Calibration has been disabled. Refer to Section 9, Enables and
Passwords, for instructions to enable Calibration.
Press the to display CALIBRATION in the upper display and SOLENOID ADJUSTMENT in the lower
display line. Press the to advance the lower display to other calibrations available.
The table below (Table 11-1) lists the calibration routines. All instruments are calibrated prior to shipment from
the factory.
CAUTION: Do not attempt any calibration without the proper test equipment that meets or exceeds the
specifications listed below.
RTD Inputs: Decade box with 0.01% resolution or equivalent OR 100 ohm
±
0.01% AND 277
ohm
±
0.01%.
CURRENT Inputs: 0.00 mA to 20.00 mA Source
±
0.01 mA DC
* TC or 0/25 mV Inputs: 0.00 mV to 25.00 mV Source
±
0.01 mV DC
*TC or 0/100 mV Inputs: 0.00 mV to 100.00 mV Source
±
0.01 mV DC
0 to 1 VOLT Inputs: 0.00 V to 1.00 V
±
0.01 V DC
0 to 10 VOLT Inputs: 0.00 V to 10.00 V
±
0.01 V DC
:
* For TC only - one (1) mercury thermometer
±
.25 deg. C or equivalent and a Type X thermocouple; X = type of
TC input being calibrated.
TABLE 11-1 CALIBRATION ROUTINES
Input Calibration Performs calibration of all input sources
Parameter Defaults Invokes the default values for all program parameters
Chart Calibration Performs calibration of the pen to the chart. It is recommended that chart
calibration be performed whenever the chart size is changed.
Milliamp Outputs Performs calibration of current outputs
Solenoid Adjustment Allows calibration of the current through the solenoid driver and is adjusted at the
factory to maximize life of the solenoid actuators. This procedure would not
normally need to be performed in the field.
Calibration Defaults Invokes the calibration default values.