CIPer
TM
MODEL 50 CONTROLLER
–
INSTALLATION AND COMMISSIONING INSTRUCTIONS
73
31-00233-02
APPENDIX 2
Sensor Input Accuracy
The internal sensor inputs of the CIPer Model 50 controller support both NTC10k
Ω
(Type II) and NTC20k
Ω
(Type II) sensors (see also section "Universal Inputs"). The following table lists the typical minimum
accuracies of the hardware and software for temperature sensors.
Table 33. Accuracies of internal NTC20k
Ω
sensor inputs of the CIPer Model 50
Range
Measurement error (excl. sensor characteristics)
NTC10k
Ω
(Type II) sensors NTC20k
Ω
(Type II) sensors
-
58 …
-4 °F (-
50 …
-20 °C)
≤ 5.0 K
≤ 5.0 K
-
4 … +32 °F
(-
20 … 0 °C
)
≤ 1.0 K
≤ 1.0 K
32 … 86 °F
(
0 … 30 °C
)
≤ 0.5 K
≤
0.3 K
86 … 158 °F
(
30 … 70 °C
)
≤ 0.5 K
≤ 0.5 K
158 … 212 °F
(
70 … 100 °C
)
≤ 1.0 K
≤ 1.0 K
212 … 266 °F
(
100 … 130 °C
)
--
≤ 3.0 K
266 … 302 °F
(
130 … 150 °C
)
--
≤ 5.5 K
302 … 752 °F
(
150 … 400 °C
)
--
--
NTC10k
Ω
specified for -
22… 212 °F
(-
30 …
+100 °C), only.
NOTE
This is the accuracy of the internal sensor input (ha software [linearization]), only. This table
does not include the characteristics of the sensors, themselves (see section "Sensor Characteristics"
below). If a different sensor or sensor accuracy is required, one may instead use the inputs of, e.g., a
connected Panel I/O module.
Recognition of Sensor Failure of Sensor Inputs
The thresholds at which sensor failures
–
i.e., sensor breaks (SB) and short-circuits (SC)
–
are recognized
depends upon the given sensor type. In the event of a recognized sensor failure, the sensor inputs assume
the safety values configured in WEBs-N4. Table 34 lists the measurement ranges and the corresponding
thresholds for the recognition of sensor failure for the various different sensor types:
Table 34. Thresholds for short-circuit (SC) and sensor-break (SB) recognition
I/O configuration
Measurement range
Recognition thresholds
2…10 V
2…10 V / 4…20 mA
(without pull-up) SC: < 1.5 V / 3 mA; SB: no recognition
NTC10k
Ω
(Type II)
-
22 … 212 °F (
-
30…..+100°C)
SC: < 20
Ω
; SB: < -94°F (-70 °C)
NTC20k
Ω
(Type II)
-
58 … 302 °F (
-
50…..+150°C)
SC: < 20
Ω
; SB: < -94°F (-70 °C)
NI1000 TK6180 DIN
-
58 … 302 °F
(-
50…..+150°C)
--
NI1000 TK5000 DIN
-22
… 302 °F (
-3
0…..+1
30°C)
--
PT1000-1
-
58 … 302 °F (
-
50…..+150°C)