4
Technical Specifications
The accuracies quoted apply at + 18°C to + 28°C unless otherwise stated, and are expressed
as ± (n % L + C) where L = 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 here-
after:
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 100mV and Ohm) use con-
nections with bare wires or spade terminals.
The accuracy includes the accuracy of the reference standards, non linearity, hysteresis, re-
peatability and long term stability over the period quoted.
4.1
Measurement Function
Measurement rate: 0.5 s per measurement.
Maximum rated voltage in common mode: 60 VDC or VAC.
4.1.1
Current measurement (DC)
Range
Resolution Accuracy
Notes
±100 mV 1 µV
0.013 % of rdg. + 3 µV
Rin > 10 MΩ
±1 V
10 µV
0.013 % of rdg. + 20 µV
Rin > 10 MΩ
±10 V
100 µV
0.015 % of rdg. + 200 µV
Rin = 1MΩ
±50 V
1 mV
0.015 % of rdg. + 2 mV
Rin = 1MΩ
Temperature coefficient <7 ppm/°C from 0 °C to 18 °C and from 28 °C to 50 °C.
Use the absolute value of the value measured (|L|) to calculate the accuracy.
4.1.2
Current measurement (DC)
Range
Resolution Accuracy
Notes
±50 mA
1 µA
0.0175 % of rdg. + 2 µA
Rin < 25 Ω
4-20 mA
1 µA
0.0175 % of rdg. + 2 µA
Rin < 25 Ω
0-20 mA
1 µA
0.0175 % of rdg. + 2 µA
Rin < 25 Ω
Temperature coefficient < 10 ppm/°C from 0 °C to 18 °C and from 28 °C to 50 °C.
•
Loop power supply = 24 V ± 10%.
•
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.
