Weidmuller CNDAR - Universal galvanically isolated signal con Uživatelský manuál stáhnout pdf (Strana 21)

• Calibration

General

The CND/AR is factory calibrated. Once calibrated it will operate with

any input or output format without recalibration.

Allow the instrument 15 minutes of powered operation (to reach a

stable temperature) before calibration and allow a few seconds for

signals to stabilise before accepting their value.

Equipment requirements

• Suitable precision 50 Ω, 200 Ω, 1 kΩ, 5 kΩ resistors (±0.05 % or

better accuracy)

• An Rtd simulator with ±0.05 % or better accuracy

• An accurate digital multimeter (accurate to 0.05 mV and ±0.1 μA)

Terminal connections for input calibration

Calibration Stage Signal type Terminal

Calibrating resistance

Pt100 RTD simulator

A 4

B 5

Bsense 6

Analogue Current Output

mA output + 14

mA output − 15

Analogue Voltage Output

V output + 14

V output − 16

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 27 28

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Weidmuller CNDAR - Universal galvanically isolated signal con Uživatelský manuál Strana 21