Data Sheet for Product

Technical Specification Sheet
Document No. 149-919
December 12, 2017
Siemens Industry, Inc. Page 1 of 2
Immersion Well Temperature Sensors
Thermistor/
RT
D
4 to
20
mA
Description
Siemens Immersion Well Temperature Sensors
monitor and transmit changes in liquid temperature to
the HVAC control system. The sensor resistance
varies proportionally to the actual temperature being
measured.
All sensors are fully assembled with stainless steel
thermowells, and are available in 2.5-inch, 4-inch and
6-inch insertion depths.
Multiple output signals are available to ensure
compatibility with most common HVAC control
systems.
Features
• Variety of sensing elements.
• Suitable for hot or chilled fluids.
• Responsive to temperature changes.
• Accurate and reliable indication of temperature.
• Familiar installation requires no special tools.
Specifications
Output Signals 100k Ω Thermistor
10k Ω Type 2 Thermistor
10k Ω Type 3 Thermistor
1k Ω @ 32°F Ni RTD
1k Ω @ 70°F Ni RTD
1k Ω Pt RTD (375a)
1k Ω Pt RTD (385a)
4 to 20 mA
• 20°F to 70°F
• 30°F to 250°F
• 32°F to 212°F
Well Material 300 Series Stainless Steel
Lead-free
External Connection Threads 1/2-inch – 14 NPT
Conduit Connection Threads 1/2-inch – 14 NPSMI
NOTE: Not for use in potable water systems.