Chapter 5
Chapter 5 Calibration 5-9
Figure 5-6
Setup for Analog Output Calibration
5.3 Analog Output Calibration
Model: ADAM-4021
The output current of analog output modules can be calibrated by using a
low calibration value and a high calibration value. The analog output
modules can be configured for one of two ranges: 0-20 mA and 4-20 mA.
Since the low limit of the 0 - 20 mA range, 0 mA, is internally an absolute
reference (no power, or immeasurably small power) just two levels are
needed for calibration: 4 mA and 20 mA.
1. Apply power to the analog output module and let it warm up for about
30 minutes.
2. Assure that the module is correctly installed and that its configuration is
according your specifications and matches the output range you want
to calibrate. You can do this by using the ADAM utility software. (Refer
to Appendix D, Utility Software.)
3. Connect either a 5-digit millimeter or voltmeter with a shunt resistor
(250Ω, 0.01% , and 10ppm) to the screw terminals of the module
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