Sensor Input Accuracy; Recognition Of Sensor Failure Of Sensor Inputs; Sensor Characteristics; Appendix 2 - Honeywell CIPer 50 Installation & Commissioning Instructions

CIPer MODEL 50 CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

APPENDIX 2

Sensor Input Accuracy

The internal sensor inputs of the CIPer Model 50 controller support both NTC10kΩ and NTC20kΩ sensors (see also section
"Universal Inputs" on page 22). The following table lists the typical minimum accuracies of the hardware and software for
temperature sensors.
Table 33. Accuracies of internal NTC20kΩ sensor inputs of the CIPer Model 50
-50 ... -20 °C (-58 ... -4 °F)
-20 ... 0 °C (-4 ... +32 °F)
0 ... 30 °C (32 ... 86 °F)
30 ... 70 °C (86 ... 158 °F)
70 ... 100 °C (158 ... 212 °F)
100 ... 130 °C (212 ... 266 °F)
130 ... 150 °C (266 ... 302 °F)
150 ... 400 °C (302 ... 752 °F)
NTC10kΩ specified for -30 ... +100 °C (-22... 212 °F), only.
(1
NOTE: This is the accuracy of the internal sensor input (hardware + 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
2...10 V
NTC10kΩ
NTC20kΩ
NOTE: In the case of temperatures lying outside the aforementioned ranges, the lowest/highest value within the range,
instead, will be communicated. Thus, a temperature of -51 °C (-59.8°F) will be communicated as "-50 °C (-58°F)."

Sensor Characteristics

The characteristics (resistance in relation to temperature) of the sensors and the resultant voltage are listed on the
following pages. The stated values do not include failures due to: sensor failures; wiring resistance or wiring failures;
misreading due to a meter connected to measure resistance or voltage at the input.
31-00233EFS-01
range
measurement range
2...10 V / 4...20 mA (without pull-up)
-22 ... 212 °F (-30.....+100°C)
-58 ... 302 °F (-50.....+150°C)
measurement error (excl. sensor characteristics)
NTC10kΩ sensors
≤ 5.0 K
≤ 1.0 K
≤ 0.5 K
≤ 0.5 K
≤ 1.0 K
--
--
--
SC: < 1.5 V / 3 mA; SB: no recognition
SC: < 20 Ω; SB: < -70 °C (-94°F)
SC: < 20 Ω; SB: < -70 °C (-94°F)
48
NTC20kΩ sensors
(1
≤ 5.0 K
≤ 1.0 K
≤ 0.3 K
≤ 0.5 K
≤ 1.0 K
≤ 3.0 K
≤ 5.5 K
--
recognition thresholds