Error limits of analog inputs for thermal resistors
(at 25
°
C ambient temperature and 100 ms integration time)
Type Temperature range Basic error
1
Temperature error
2
[°C/K]
Pt100 climatic -200 °C....+325 °C ± 0.05K ± 0.006
Pt200 climatic -200 °C....+325 °C ± 0.05K ± 0.006
Ni 100 climatic -60 °C....+250 °C ± 0.05K ± 0.003
Pt100 standard -200° C....+850 °C ± 0.2K ± 0.01
Pt200 standard -200 °C....+850 °C ± 0.2K ± 0.01
Ni 100 standard -60 °C....+250 °C ± 0.1K ± 0.003
Error limits of analog inputs for resistance sensors
(at 25 °C ambient temperature and 100 ms integration time)
Type Resistance sensor Basic error
3
Temperature error
2
[°C/K]
150 Ω 0.000 Ω .176.383 Ω ± 0.006% ± 0.001
300 Ω 0.000 Ω...352.767 Ω ± 0.006% ± 0.001
600 Ω 0.000 Ω...705.534 Ω ± 0.006% ± 0.001
1
The basic error includes the linearization error of the voltage temperature conversion and the basic
error of the analog/digital conversion at T
u
= 25°C.
2
The total temperature error = temperature error x max. ambient temperature change DT
u
as a tem‐
perature difference with respect to 25°C.
3
The basic error includes the errors in % of the measuring range of the analog/digital conversion at T
a
=
25 °C.
The operating error for the use of thermocouples / thermal resistors consists of:
● Basic error of the analog input at T
u
= 25°C
● Total temperature error
● Errors that occur due to the compensation of the reference junction temperature
● Errors of the thermocouple / thermal resistor used
The operating error for the use of thermal resistors consists of:
● Basic error of the analog input at T
u
= 25°C
● Total temperature error
● Error of the sensor used
Status, interrupts, diagnostics
Status display No
Group error display (SF LED) Yes
Diagnostic interrupts Configurable
Diagnostic functions Configurable
ET 200PA SMART I/O modules
10.4 Analog input modules
ET 200PA SMART
Operating Instructions, 06/2019, A5E34192013-AB 195
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