TM612
- 33 -
- 33 -
G.
T
ECHNICAL SPECIFICATIONS
The precision expressions mentioned herein apply from + 18°C to + 28°C, unless otherwise specified, and are
expressed in ± (n % R + C) where R = Reading and C = Constant expressed in practical units, for a
confidence interval of 95%.
They apply to a device positioned in the reference conditions defined after fifteen minutes of pre-heating.
The precision includes the precision of the reference calibrations, the non-linearity, hysteresis, repetitiveness
and long-term stability over the time period mentioned.
G.1
Measurement Function
Rated maximum voltage in common mode: 60 VDC or VAC.
G.1.1
Resistance
The resistance measurement function is obtained by configuring the device as follows:
Sensor: PT100 and Unit: Ohm for the 400 Ohm gauge.
Sensor: PT1000 and Unit: Ohm for the 3600 Ohm gauge.
Gauge
Scope of
measurement
Resolution
(min)
Precision / 1year
400 Ohm
0 Ω to 400 Ω
10 mΩ
0.012% R + 10 mΩ
3600 Ohm
0 Ω to 3600 Ω
100 mΩ
0.012% R +100 mΩ
Temperature coefficient < 10 ppm/°C from 0°C to 18°C and from 28°C to 50 °C.
•
Automatic wiring diagram detection: 2 wires, 3 wires or 4 wires.
•
In the 2-wire assembly, the measurement includes the line resistances.
•
In the 3-wire assembly, add the line resistances imbalance.
•
Measurement current 0.65mA
G.1.2
Temperature by resistive sensors.
Sensor
Scope of measurement
Resolution
Precision / 1year
Pt 50 (
α
= 3851)
- 220°C + 850°C
0.01°C
0.012 % R+ 0.06°C
Pt 100 (
α
= 3851)
- 220°C + 850°C
0.01°C
0.012 % R+ 0.05°C
Pt 100 (
α
= 3916)
- 200°C + 510°C
0.01°C
0.012 % R+ 0.05°C
Pt 100 (
α
= 3926)
- 210°C + 850°C
0.01°C
0.012 % R+ 0.05°C
Pt 200 (
α
= 3851)
- 220°C + 1,200°C
0.01°C
0.012 % R+ 0.12°C
Pt 500 (
α
= 3851)
- 220°C + 1,200°C
0.01°C
0.012 % R+ 0.07°C
Pt 1,000 (
α
= 3851)
- 220°C + 760°C
0.01°C
0.012 % R+ 0.05°C
Ni 100 (
α
= 618)
- 60°C + 180°C
0.01°C
0.012 % R+ 0.03°C
Ni 120 (
α
= 672)
- 40°C + 205°C
0.01°C
0.012 % R+ 0.03°C
Ni 1,000 (
α
= 618)
- 60°C + 180°C
0.01°C
0.012 % R+ 0.03°C
Cu 10 (
α
= 427)
- 70°C + 150°C
0.10°C
0.012 % R+ 0.18°C
Cu 50 (
α
= 428)
- 50°C + 150°C
0.01°C
0.012 % R+ 0.06°C
For negative temperatures, use the value displayed R and not its absolute value.
Temperature coefficient: < 10 % of precision/°C.
The above precision is given for a 4-wire connection to the temperature sensor.
You should also take into consideration the actual error of the temperature sensor used, as well as the
conditions of its setup.
Measurement current: 0.65 ma
