Characteristics of the RTD Ranges for the BMX ART 0414/0814 Modules
Original instructions
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At a Glance
The table below presents the maximum margin of error, at 25°C, of the Pt100, Pt1000, and Ni1000 RTD ranges.
Temperature
Pt100 RTD
Pt1000 RTD
Ni1000 RTD
Display resolution
0.1°C
0.1°C
0.1°C
Maximum error at 25°C (1)
Operating point
-100°C
0.8°C
1.6°C
0.4°C
0°C
0.8°C
1.6°C
0.5°C
100°C
0.8°C
1.6°C
0.7°C
200°C
1.0°C
2°C
0.6°C
300°C
1.2°C
2.4°C
400°C
1.3°C
2.8°C
500°C
1.5°C
3.3°C
600°C
1.7°C
3.6°C
700°C
1.9°C
4.1°C
800°C
2.1°C
4.5°C
Input dynamic
-175..825°C
-283..1,517°F
-175..825°C
-283..1,517°F
-54..174°C
-66..346°F
Legend:
(1) Ambient temperature
NOTE: The precision values are provided for a 3/4-wire connection and include the errors and drift of the 1.13 mA (Pt100) or 0.24 mA (Pt1000 or Ni1000) current source.
The effects of self-heating do not introduce any significant error to the measurement, whether the probe is in the air or under water.
The table below presents the maximum margin of error, between 0 and 60°C, of the Pt100, Pt1000, and Ni1000 RTD ranges.
Temperature
Pt100 RTD
Pt1000 RTD
Ni1000 RTD
Display resolution
0.1°C
0.1°C
0.1°C
Maximum error from 0 to 60°C
Operating point
-100°C
1°C
2°C
0.8
0°C
1°C
2°C
0.9°C
100°C
1°C
2°C
1.1°C
200°C
1.2°C
2.4°C
1.3°C
300°C
1.5°C
3°C
400°C
1.8°C
3.6°C
500°C
2°C
4°C
600°C
2.3°C
4.6°C
700°C
2.5°C
5°C
800°C
2.8°C
5.6°C
Input dynamic
-175..825°C
-283..1,517°F
-175..825°C
-283..1,517°F
-54..174°C
-66..346°F
NOTE: The precision values are provided for 4-wire connection and include the errors and drift of the 1.13 mA (Pt100) or 0.24 mA (Pt1000 or Ni1000) current source.
The effects of self-heating do not introduce any significant error to the measurement, whether the probe is in the air or under water.
An error at a given temperature T can be deduced by linear extrapolation of the errors defined at 25 and 60°C according to the formula:
Reference standards: