USER MANUAL 1.2 | B-FORTIS CC-PRIME SERIES
Berghof Automation GmbH | Arbachtalstrasse 26 | 72800 Eningen |
36
Operating mode: temperature inputs AI-PT
Feature
Value
Description
Connections per
input
–
Sensor connection between AI (U/T) and
AGND
Possible sensors
PT100 and PT1000
acc. to EN 60751
Accuracy class AA, A, B and C platinum
sensors may be used; recommendation: B or
C
Measuring range
–40 to +200°C
–
Measuring current
(RMS)
0.3 mA
–
Conversion time
250 ms
–
Max. errors at 25°C
±0.21% (±0.5°C)
–
Temperature
coefficient
±50 ppm/K
(±0.012°C/K)
–
Digital resolution
24 bit
–
Data format in
user program
2 × 32 bit real
(floating-
point number) in Ohms (Ω) and
degrees Celsius (°C)
Linearisation
–
The value in degrees Celsius is calculated
from the resistance value and linearised (3
rd
degree polynomial)
Input type
–
2-wire measurement or 3-wire measurement
Reference potential
AGND
–
Dynamic characteristics
Analogue filtering
Second-grade low-
pass filter; time
constant T = approx.
500 µs
–
Greatest temporary
deviation during
electrical error
testing according to
IEC 61131-2
0.5% of measuring
range
–
