B.2.2 Measuring Current - AOIP CALYS 50 Mode D'emploi

B.2.2 Measuring current
Display the MEASUREMENT CONFIGURATION dialogue box:
Select the Idc measurement function then the correct range of measurement using the function and navigation
keys.
Confirm with ENTER.
Depending on the range selected, several modes of measurement are available:
Range 50 mA
1 µA
Resolution
< 30 Ω
Input impedance
Loop power supply No
Set to scale No
If loop power supply is on, the connection is made between terminals 4-w and mA.
In this case, the CALYS 50 / 75 / 100 supplies a passive transmitter with 24 V and at the same time measures the current
established by the transmitter.
If the loop power supply is off, the connection is made between terminals mA and COM.
When set to the square law scale, the calibrator takes the square root of the input and displays the result as a percentage.
For example, if the calibrator is connected to the output of a differential pressure transmitter, it displays a result
proportional to the flow rate.
4-20 mA
1 µA
< 30 Ω
< 280 Ω if HART ON
Possible
Linear or square law
Measurement
0-20 mA
1 µA
< 30 Ω
< 280 Ω if HART ON
Possible
Linear or square law
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