Product Overview

Technical Specification Sheet
Document No. 149-262P25
December 16, 2009
Siemens Industry, Inc. Page 1 of 2
Analog Sensors—100K Ω Thermistor
Description
100K Ohm Thermistor sensors provide input for cost-
effective, accurate temperature sensing (detecting) for
controllers from Siemens Industry, Inc. via a 20 AWG
twisted, shielded cable pair. The sensor resistance
varies according to the temperature being measured.
Several models are available for specific mounting and
sensing applications.
Specifications
Temperature monitoring
range
See Sensor Specifications
Output signal Changing resistance
Elements Thermistor
Accuracy
± 0.36°F (± 0.2°C) at
calibration point 77°F
(25°C)
Reference resistance at
77°F (25°C)
100K Ω
Figure 1. Surface Mounted Pipe Sensor.
Figure 2. Outside Air Temperature Sensor.
Figure 3. Duct (Single Point) Temperature Sensor (535-741-18
Shown with AQM2000 Accessory).
Figure 4. Averaging Rigid Temperature Sensor.