Moore 535 PROFILER, Руководство пользователя

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Calibration
A-8
Appendix 4 535-PROF User's Manual
9. Press MENU key.
The 2nd display should show CAL. 120mV. The 3rd display should show a value
close to 120.000. Match controller display to multimeter value using
and
keys.
10. Press MENU four more times. Each time, match the displays of the controller
and the multimeter. Press ACK when done.
The 2nd display should show CALIBRATE; the 3rd display should show ANA.
mA IN.
11. Turn off power to the unit.
12. For thermocouple input , proceed to the Thermocouple Cold Junction Calibra-
tion.
13. For milliamp input , proceed to Analog Milliamp Input Calibration.
14. For milliamp output calibration , let the controller warm up for 10 minutes,
then skip to step 5 of Milliamp Output Calibration.
15. If calibration is complete , place all the jumpers back in their original positions
(as specified in Chapter 3).
THERMOCOUPLE COLD JUNCTION CALIBRATION
1. Connect the two pairs of T/C wire to terminals 28, 29, 31 and 32 as shown in
Figure A4.5. Make sure the T/C wires are floating (disconnect from the multim-
eter also), and are not touching each other.
2. Turn on power to the unit and let controller warm up for 30 minutes in the normal
horizontal position: while the unit is warming up, the rear face of the controller
should be vertical, not horizontal.
3. Press the MENU key until the display indicates CALIBRATE COLD JUNC.
4. Press the ACK key. The display should show PV = -150 C PRESS ACK.
5. Connect both pairs of T/C wires in parallel—do not daisy chain—to a Type T
thermocouple calibrator. (Both pairs must be connected or the calibration will
not be accurate.)
6. Set the thermocouple calibrator to an output value of -150° C for a Type T ther-
mocouple and allow the calibrator to stabilize for a few minutes.
7. Press ACK to initiate calibration of the cold junction.
8. For milliamp output calibration , proceed to Milliamp Output Calibration. Let
the controller warm up for 10 minutes, then skip to step 5.
9. If calibration is complete , power down, then place all the jumpers in their origi-
nal positions (as specified in Chapter 3).
ANALOG MILLIAMP INPUT CALIBRATION
1. Remove the thermocouple wires (if present) from terminals 28, 29, 31 and 32.
Replace them with pieces of wire that will be connected to a 20 milliamp input
current (see
Figure A4.6). Make sure terminal screws are securely tightened,
but do not connect the wires yet (leave inputs floating).
2. Turn on power to the unit.
3. Press MENU until the display indicates CALIBRATE ANA. mA IN, then
press ACK .
If the display shows PV1=20mA PRESS ACK, move ahead to step #8.
4. The controller will display SET BOTH JUMPER=mA.
5. Power down the controller and remove chassis from the case.
Figure A4.5
Thermocouple/Cold Junction
Calibration Wiring
23
24
21
22
19
20
17
18
29
30
27
28
25
26
32
31
Type T
thermocouple
wires (floating)
– red
+ blue
– red
+ blue