SPYDER MODEL 5 ROOM CONTROLLERS − INSTALLATION GUIDE
19 31-00281ES-01 (EN1B-0664GE51 R0819)
APPENDIX: SENSOR CHARACTERISTICS
Sensor Input Accuracy
The controller's internal sensor inputs support NTC10kΩ (Type II) and NTC20kΩ sensors. The following table lists the typical
minimum accuracies of the hardware and software for these temperature sensors.
Table 12. Accuracies of internal NTC10kΩ and NTC20kΩ sensor inputs of the controller
measurement error (excluding sensor characteristics)
-58 to -4 °F (-50 to -20 °C)
-4 to +32 °F (-20 to 0 °C)
86 to 158 °F (30 to 70 °C)
158 to 212 °F (70 to 100 °C)
212 to 266 °F (100 to 130 °C)
266 to 302 °F (130 to 150 °C)
302 to 752 °F (150 to 400 °C)
(A
NTC10kΩ (Type II) specified for -22 to 212 °F (-30 to +100 °C) only.
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 input is set to "invalid." The user may program
safety functions based upon invalid sensor data. Table 13 lists the measurement ranges and the corresponding thresholds
for the recognition of sensor failure for the various different sensor types:
Table 13. Thresholds for short-circuit (SC) and sensor-break (SB) recognition
2to10 V / 4to20 mA (without pull-up)
SC: < 1.5 V / 3 mA; SB: no recognition
-58 to +212 °F (-50 to +100 °C)
SC: < 20 Ω; SB: < -94 °F (-70 °C)
-58 to +302 °F (-50 to +150 °C)
SC: < 20 Ω; SB: < -94 °F (-70 °C)
-22 to +752 °F (-30 to + 400 °C)
SC: < 775 Ω; SB: < -58 °F (-50 °C)
-94 to +266 °F (-70 to +130 °C)
SC: < 850 Ω; SB: < -58 °F (-30 °C)
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 °F will be communicated as “-50 °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’s due to a meter connected to measure resistance or voltage at the input.
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