Technical Specification Sheet Document No. 149-918 August 23, 2016 Siemens Industry, Inc. Page 1 of 2 Surface Mount Temperature Sensors With Electrical Box Strap-on Cable Only Self-Contained Description Siemens Surface Temperature Sensors monitor and transmit changes in temperature to the HVAC control system. The sensor resistance varies proportionally to the actual temperature being measured. The self-contained sensors and units with electrical boxes are ideal for measuring pipe surface temperature as a surrogate for actual fluid temperature when it is not possible to retrofit a full immersion type sensor. The strap-on cable style sensors can be used to acquire pipe surface temperature and can also be used to quickly acquire duct air temperature. When fitted with an appropriate protection tube, it can acquire temperature within a concrete slab. The QAH11.1 is designed specifically for use as a changeover temperature sensor with Siemens RDG Series room thermostats. 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 change. Accurate and reliable indication of temperature. Easy 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 Accuracy See Table 1. Information in this document is based on specifications believed correct at the time of publication. The right is reserved to make changes as design improvements are introduced. Product or company names mentioned herein may be the trademarks of their respective owners. © 2016 Siemens Industry, Inc. Siemens Industry, Inc. Building Technologies Division 1000 Deerfield Parkway Buffalo Grove, IL 60089-4513 USA Tel. +1-847-215-1000 Your feedback is important to us. If you have comments about this document, please send them to SBT_technical.editor.us.sbt@siemens.com Document No. 149-918 Printed in the USA Page 2 of 2 Table 1. Product Ordering Information. Configuration Output Signal Measuring Range Cable Length Accuracy Product Number With 2" × 4" Electrical Box 10K Ω Type II Thermistor -40°F to 240°F (-40°C to 121°C) 26 inches ±0.4°F (±0.2°C) @ 77°F (25°C) QAD2030U 10K Ω Type III Thermistor 26 inches QAD2032U 1K Ω @ 3°2F Ni RTD 26 inches ±0.72°F (±0.4°C) @ 32°F (0°C) QAD2020U 1K Ω @ 70°F Ni RTD 26 inches QAD2021U 1K Ω Pt RTD (375a) 26 inches ±0.54°F (±0.3°C) @ 32°F (0°C) 544-089 1K Ω Pt RTD (385a) 26 inches QAD2012U 4 to 20 mA 30°F to 250°F (-1°C to 121°C) 26 inches 536-780 Strap-on Cable Only 100K Ω Thermistor -40°F to 248°F (-40°C to 120°C) 8 inches ±0.50°F (±0.28°C) @ 77°F (25°C) 540-258 10K Ω Type II Thermistor -13°F to 203°F (-25°C to 95°C) 6.5 Feet ±0.81°F (±0.45°C) @ 77°F (25°C) QAP1030.200 1K Ω @ 32°F Ni RTD 6 Feet ±0.36°F (±0.2°C) @ 32°F (0°C) QAP22 1K Ω Pt RTD (385a) -22°F to 266°F (-30° to 130°C) 5 Feet ±1°F (±0.5°C) @ 32°F (0°C) QAP2012.150 3K Ω Thermistor 32°F to 104°F (0°C to 40°C) 8 feet ±0.54°F (±0.3°C) @ 77°F (25°C) QAH11.1* Self- Contained with Plastic Housing 10K Ω Type II Thermistor -11°F to 257°F (-30°C to 125°C) Not Applicable ±0.81°F (±0.45°C) @ 77°F (25°C) QAD2030 1K Ω @ 32°F Ni RTD 0°F to 250°F (-18°C to 121°C) Not Applicable ±0.36°F (±0.2°C) @ 32°F (0°C) QAD22 1K Ω Pt RTD (385a) -11°F to 266°F (-30°C to 130°C) Not Applicable ±0.54°F (0.3°C) @ 32°F (0°C) QAD2012 * For use as a heating/cooling changeover sensor with Siemens RDG Series room thermostats. Next >