Technical Specifications; D.1 Measurement Function; Dc Voltage (Calys 50 / 75); Dc Current (Calys 50 / 75) - AOIP CALYS 50 Mode D'emploi

D. TECHNICAL SPECIFICATIONS
The accuracies quoted apply at + 18°C to + 28°C unless otherwise stated, and are expressed as ± (n % R + C) where R =
The reading and C = a Constant expressed in practical units. The specifications are given for a confidence level of 95%.
They apply to a product placed under reference conditions of measurement defined hereafter:
- A preheating of twenty minutes is necessary.
- Use of the product without battery charger (wait thirty minutes after the end of the load).
- For weak signals (measurement and simulation: voltage cal 100 mV and Ohms) use connections with bare wires or
spade terminals.
The accuracy includes the accuracy of the reference standards, non-linearity, hysteresis, repeatability and long term
stability over the period quoted.

D.1 Measurement Function

Measurement rate: 0.5 s per measurement.
Maximum rated voltage in common mode: 60 VDC or VAC.
D.1.1

DC Voltage (CALYS 50 / 75)

Range Resolution
±100 mV 1 µV
±1 V (1) 10 µV
±10 V 100 µV
±50 V 1 mV
(1) Specification domain: -0.8 V to +1 V
(2) WEM41012-00B 10 MΩ; WEM41012-00A 1 MΩ;
Temperature coefficient: from -10°C to +18°C and from +28°C to +50 °C:
- Ranges 100mV – 1V : < (6 ppm R + 0.5 ppm Range) /°C,
- Range 10V : < (6 ppm R + 1 ppm Range) /°C,
- Range 50V : < (5 ppm R + 2 ppm Range°C.
Use the absolute value of the value measured (|L|) to calculate the accuracy.
D.1.2

DC Current (CALYS 50 / 75)

Range Resolution
±50 mA 1 µA
4-20 mA 1 µA
0-20 mA 1 µA
Temperature coefficient: < (10 ppm R + 2 ppm Range)/°C from -10°C to +18°C and from +28°C to +50 °C.
Loop power supply = +24 V typ. (30 V max)
HART compatibility: input impedance Rin = 280 Ω.
Linear or square law display scale.
Use the absolute value of the value measured (|L|) to calculate the accuracy.
D.1.3 Resistance (CALYS 50 / 75)
Range Resolution
400 Ω 1 mΩ
4000 Ω 10 mΩ
Temperature coefficient < (6 ppm R + 1 ppm Range)/°C from -10°C to +18°C and from +28°C to +50 °C.
Automatic detection of connection scheme: 2 wire, 3-wire or 4-wire.
For 2 wire connection, the measurement includes the resistance of the line.
For 3 wire connection, add the out-of-balance of the line resistances.
Open circuit terminal voltage < 10 V.
Accuracy / 1 year Notes
0.013% R + 3 µV Rin > 1 GΩ
0.013% R + 20 µV Rin > 1 GΩ
0.015% R + 200 µV Rin = 10 MΩ (2)
0.015% R + 2 mV Rin = 10 MΩ (2)
Accuracy / 1 year Notes
Rin < 25 Ω
0.0175% R + 2 µA
0.0175% R + 2 µA Rin < 25 Ω
0.0175% R + 2 µA Rin < 25 Ω
Accuracy / 1 year
0.012% R + 10 mΩ
0.012% R + 100 mΩ
Measurement function
Notes
Measurement current = 0.25 mA
Measurement current = 0.25 mA
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