Calibration – Weidmuller PMX400TMP - Display instrument for control panel User Manual

Page 7

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•Calibration

The PMX400/TMP is factory calibrated. Once calibrated the PMX400/
TMP will operate with any sensor type or range, and any output type
or range, without recalibration. Youshouldnothavetorecalibratethe
instrumentbeforeinstallation.

Equipmentrequirements
• A suitable millivolt source (accurate to  μV or better)
• An accurate digital multimeter (accurate to 0.0 mV and ±0.1 μA)
• A Pt100 Rtd simulator (accurate to 0.0 ˚C)

TerminalConnectionsforcalibration

CalibrationStage

Signaltype

Terminal

milliVolt inputs

Millivolt source (+)

11

Millivolt source (–)

10

CJC Circuit

Millivolt source (+)

9

Millivolt source (–)

10

RTD Inputs

Rtd simulator B

10

Rtd Simulator Bsense

11

Rtd Simulator A

12

Analogue Current Output

mA output +

3

mA output –

4

Analogue Voltage Output

V output +

3

V output –

5

Summary
There are four stages to calibrating the PMX400/TMP
• Calibrate the millivolt inputs
• Calibrate the CJC input
• Calibrate the RTD input
• Calibrate the analogue outputs

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