Partlow MIC 6000, Инструкция по установке, монтажу и эксплуатации., Страница: 48 / 82

P
AGE
48
TABLE 5-1 CALIBRATION PROCEDURES
Calibration
Procedure
Description
CAL 1 Re-initialization of Program and Tune mode values.
CAL 2 Main Calibration used by all inputs. This is the only calibration requried for
voltage and millivolt inputs.
CAL 3 Cold Junction Compensation calibration used to correct for component
variation in CJC circuit.
CAL 4 Cold Junction utility. The temperature of the cold junction is displayed. No
adjustment is made with this procedure.
CAL 5 RTD input calibration used to correct for component differences in the RTD
input circuit.
CAL 6 CJC turn on/off.
CAL 7 Factory Use Only.
CAL 8 Re-initialization of all profile information
5.2.1 CAL 1 PARAMETER INITIALIZATION
This procedure is performed to erase the information that was entered in the Program and
Tune modes. All parameters will be reset to default values. Prior to beginning this procedure
record the Program and Tune mode parameters so that they can be re-entered. No special
test equipment is required.
With CAL 1 displayed, depress and hold the DOWN key, then press the SCROLL key. The
display will momentarily go blank. Release the keys. CAL 1 will reappear on the display.
This calibration can be done again or another may be selected.
5.2.2 CAL 2 MAIN CALIBRATION
This procedure determines and saves calibration values which correct for component
variations relating to the input measuring function of the instrument. This is the only
calibration required for the volt and millivolt inputs. Additional calibration procedures are
required for thermocouple and RTD inputs.
A 50.00
±
.01 mVDC source is required for calibrating. In addition, make sure that JU1 on the
Processor board is in the "non volt" position. See Appendix A-2 (page 64).
Make sure all input wiring is disconnected. Short the input terminals 1 and 3 or apply
0.00
±
mV to the input. With CAL2 displayed, press and hold the DOWN key, then press the
SCROLL key. Release both keys and the instrument will display hLd1. Depress the DOWN
key; dELy will appear for up to ten seconds, then SCAn will appear for up to ten seconds. If
the calibration reference number which appears is not between -50 and +50, proceed per note
below. Otherwise, connect a 50.00
±
.01 mV source to the input terminals. Press the DOWN
key and dELy will be displayed for ten seconds and the SCAn for ten seconds. Then CAL2
will reappear. If there is a problem, the appropriate error code will be displayed. Restore JU1
to the position necessary for the input type.