Yokogawa Touch Screen GP20 Manuel d'utilisateur Page 357

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5-3
IM 04L51B01-01EN
Maintenance and Troubleshooting
1
2
3
4
5
App
5.1.3 Performing A/D Calibration and Adjusting the Input Accuracy
Preparing the Instruments
1
Wire the GX/GP and the calibration instruments as shown in the following figure, and
adequately warm up the instruments (the warm-up time of the GX/GP is at least 30
minutes).
2
Check that the operating environment such as ambient temperature and humidity is
within the standard operating conditions (see “General Specifications”).
Operation complete
Wiring for DC voltage range
Wiring for RTD range
CH1
CH2
CH1
CH2
+
DC voltage/current standard
Hi
Lo
Make the resistance of three lead wires equal.
b
A
Resistance standard
H
L
G
B
A
B
b
Short the input terminal of CH1 (apply 0 V)
Short the input terminal of CH1 (connect 0 Ω)
Input terminal of CH2
Input terminal of CH2
5.1 Maintenance
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