User Manual

3-1
SM 04L31A01-01E
Adjustments
3
Chapter 3 Adjustments
3.1 Calibration of the Measuring Instrument’s Input
Allow the instrument to warm up for at least 30 minutes prior to calibration.
Instruments for Calibration
DC voltage generator Accuracy: 0.005% of setting +1 µV
Resistor 100 Ω, 300 Ω (accuracy: 0.01% or less)
Overview
The structure of the A/D converter in the CX2000 differs depending on the model.
Multiple channels (groups) share one A/D converter. All A/D converters must be
calibrated, so calibration must be performed on each group.
CX1000
Monitor
No. of Inputs for Measurement Total Number No. of No. of Group
Meas. Interval of Channels CH/AD A/D
6ch 1s 6 6 1 (1—6)
* Group: a classification for all channels that share a single A/D converter
Control (1st Slot)
Number of Internal Measurement Total Number No. of No. of Group
Control Loops interval of Channels CH/AD A/D
0 loops — 0 0 0 —
2 loops 250 mS 5 5 1 (1—5)
CX2000
Control (1st Slot)
Number of Internal Measurement Total Number No. of No. of Group*
Control Loops interval of Channels CH/AD A/D
0 loops — 0 0 0 —
2 loops 250 mS 5 5 1 (1—5)
4 or 6 loops 250 mS 10 5 2 (1—5) (6—10)
* Group: a classification for all channels that share a single A/D converter
Monitor (2nd, 3rd Slot)
No. of Inputs for Measurement Total Number No. of No. of Group
Meas. Interval of Channels CH/AD A/D
10 ch 1s 10 10 1 (1—10)
20 ch 1s 20 10 2 (1—10) (11—20)
Ranges to Be Calibrated and Their Parameters
Range Zero Full Scale
20 mV 0 mV 20 mV
60 mV 0 mV 60 mV
200 mV 0 mV 200 mV
1 V 0 V 1V
2 V 0 V 2 V
6 V 0 V 6V
20 V 0 V 20 V
Pt100
†
100 Ω 300 Ω
† You must calibrate the 200 mV range before calibrating the RTD range.