SBC PCD2.M5 Series - Page 171

Hardware Manual for the PCD2.M5 Series│Document 26/856; Version EN 12│2014-07-24
Saia-Burgess Controls AG
Analogue input modules
Input/output (I/O) modules
6-60
6
Formulae for temperature measurement
For Ni 1000 (PCD2.W340)
Validity: Temperaturerange-50 … +210°C
Computational error: ± 0.5 °C
T= - 188.5 +
260 • DV
2616
-
4.676 • 10
-6
• (DV-2784)
2
For Pt 1000 (PCD2.W340)
Validity: Temperaturerange-50 … +400°C
Computational error: ± 1.5 °C
T= - 366.5 +
450 • DV
2474
+ 18.291 • 10
-6
• (DV-2821)
2
Resistance measurement up to 2.5 kΩ (PCD2.W340)
Specialtemperaturesensorsoranyotherresistancesupto2.5kΩcanbeconnected
to the PCD2.W340. The digital value can be calculated as follows:
DV=
16 380 • R
(7500+R)
where0≤DV≤4095andR=theresistancetobemeasuredinΩ.
For Ni 100 (PCD2.W350)
Validity: Temperaturerange-50 … +250°C
Computational error: ± 1.65 °C
T= - 28.7 +
300 • DV
3628
-
7.294 • 10
-6
• (DV-1850)
2
For Pt 100 (PCD2.W350)
Validity: Temperaturerange-50 … +600°C
Computational error: ± 1 °C
T= - 99.9 +
650 • DV
3910
+ 6.625 • 10
-6
• (DV-2114)
2
For Pt 1000 (PCD2.W360)
Validity: Temperaturerange-50 … +150°C
Computational error: ± 0.25 °C
T= - 178.1 +
200 • DV
2509
+ 3.873 • 10
-6
• (DV-2786)
2
T = temperature
DV = digital value