SBC PCD1 Series - Page 206

Saia-Burgess Controls AG
Manual Manual PCD 1 / PCD 2 Series │ Document 26 / 737 EN22 │ 2013-11-26
5
Input/output (I/O) modules
5-70
Analogue input modules
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