Advantech RS-485 ADAM-5013 RTD Input Resistance Calibration, Applying calibration resistance

Chapter 4

4.2ADAM-5013 RTD Input Resistance Calibration

1.Apply power to the ADAM-5510/P31 system that the RTD input module is plugged into and let it warm up for about 30 minutes

2.Make sure that the module is correctly installed and is properly configured for the input range you want to calibrate. You can use the ADAM utility software to help in this.

3.Connect the correct reference self resistance between the screw terminals of the ADAM-5013 as shown in the following wiring diagram. Table 4-2 below shows the correct values of the span and zero calibration resistances to be connected. Reference resistances

used can be from a precision resistance decade box or from discrete resistors with the values 60 Ω, 140 Ω, 200 Ω and 440 Ω.

A.GND EXC2- SEN2- SEN2+ EXC2+

Resistance

Decade Box

Figure 4-3: Applying calibration resistance

4.First, with the correct zero (offset) calibration resistance connected as shown above, issue a Zero Calibration command to the module using the Calibrate option in the ADAM utility software.

5.Second, with the correct span resistance connected as shown above, issue a Span Calibration command to the module using the Calibrate option in the ADAM utility software. Note that the module zero calibration must be completed prior to the span calibration.

ADAM-5000 4-5