Technical Specification Sheet Document No. 149-915 February 19, 2018 Siemens Industry, Inc.Page 1 of 2 Duct Temperature Sensors Rigid ProbeRigid Probe – Bracket MountFlexible Probe Description Siemens Duct Temperature Sensors monitor and transmit changes in duct air temperature to the HVAC control system. They provide an accurate, reliable indication of duct air temperature. The sensor resistance varies proportionally to the actual temperature being measured. Sensors are offered with a variety of probe lengths to fit almost any size duct. Longer probes are typically flexible for easier handling and installation (see Product Ordering Information on the following page for details). Multiple output signals are available to ensure compatibility with most common HVAC control systems. Features • Variety of sensing elements. • Suitable for multiple duct applications. • Responsive to temperature change. • Accurate and reliable indication of duct temperature. • Familiar installation process does not require 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 20mA • -4°F to 122°F • 20°F to 120°F • 30°F to 250°F 10K Ω Matched Pair Thermistor • (For use with Siemens TEC only) Probe Material 0.028 Wall SAE J526 ZTEW or Galfan steel tubing Housing*Standard NEC approved 2 × 4 inch (5 × 10 cm) utility box with 1/2-inch (13 mm) knockouts Screw Head Type Standard slotted * Bracket-mounted units do not include housing. Disposal The devices are considered electrical and electronic equipment for disposal in terms of the applicable European Directive and may not be disposed of as domestic garbage. • Dispose of the devices through channels provided for this purpose. • Comply with all local and currently applicable laws and regulations.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. © 2018 Siemens Industry, Inc. Siemens Industry, Inc. Building Technologies Division 1000 Deerfield Parkway Buffalo Grove, IL 60089-4513 USA + 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. 149-915 Printed in the USA Page 2 of 2 Product Ordering Information Output Signal TypeProbe LengthMeasuring RangeAccuracyPN 100K Ω Thermistor Point 18 inches (rigid) -40°F to 180°F (-40°C to 82°C) ±0.50°F (±0.28°C) @ 77°F (25°C) 535-741-18 4 inches (rigid)535-741-4 8 inches (rigid)535-741-8 4 inches (rigid), Bracket536-811 Averaging 18 inches (rigid) ±0.36°F (±0.2°C) @ 77°F (25°C) 540-244-18 36 inches (flexible)540-245-36 72 inches (flexible)540-246-72 10K Ω Type II Thermistor Point 4 inches (rigid) ±0.4°F (±0.2°C) @ 77°F (25°C) QAM2030.010 8 inches (rigid)QAM2030.020 18 inches (rigid)QAM2030.045 Averaging 8 feet (flexible)QAM2030.250 16 feet (flexible)QAM2030.500 24 feet (flexible)QAM2030.750 10K Ω Type III Thermistor Point 4 inches (rigid)QAM2032.010 8 inches (rigid)QAM2032.020 18 inches (rigid)QAM2032.045 Averaging 8 feet (flexible)QAM2032.250 16 feet (flexible)QAM2032.500 24 feet (flexible)QAM2032.750 1K Ω @ 32F Ni RTD Point 4 inches (rigid) ±0.72°F (±0.4°C) @ 32°F (0°C) QAM2020.010 8 inches (rigid)QAM2020.020 18 inches (rigid)QAM2020.045 Averaging 16 feet (flexible)±0.75°F (±0.4°C) @ 75°F (24°C) QAM2020.500 24 feet (flexible)QAM2020.750 1K Ω @ 70 ° F Ni RTD Point 8 inches (rigid) ±0.72°F (±0.4°C) @ 32°F (0°C) QAM2021.020 18 inches (rigid)QAM2021.045 Averaging24 feet (flexible)QAM2021.750 1K Ω Pt RTD (375a) Point 18 inches (rigid) ±0.54°F (±0.3°C) @ 32°F (0°C) 544-339-18 4 inches (rigid)544-339-4 8 inches (rigid)544-339-8 Averaging 16 feet (flexible)544-342-16 24 feet (flexible)544-342-24 8 feet (flexible)544-342-8 18 inches (rigid)544-343-18 24 inches (rigid)544-343-24 36 inches (rigid)544-343-36 48 inches (rigid)544-343-48 1K Ω Pt RTD (385a) Point 4 inches (rigid)QAM2012.010 8 inches (rigid)QAM2012.020 18 inches (rigid)QAM2012.045 Averaging 8 feet (flexible) ±0.75°F (±0.4°C) @ 75°F (24°C) QAM2012.250 16 feet (flexible)QAM2012.500 24 feet (flexible)QAM2012.750 4 to 20 mA Point 18 inches (rigid) -4°F to 122°F (-20°C to 50°C) ±0.54°F (±0.3°C) @ 32°F (0°C) 544-560-18 4 inches (rigid)544-560-4 8 inches (rigid)544-560-8 18 inches (rigid) 20°F to 120°F (-7°C to 49°C) 533-376-18 4 inches (rigid)533-376-4 8 inches (rigid)533-376-8 Averaging 16 feet (flexible)533-380-16 24 feet (flexible)533-380-24 8 feet (flexible)533-380-8 18 inches (rigid)535-490-18 24 inches (rigid)535-490-24 36 inches (rigid)535-490-36 48 inches (rigid)535-490-48 Point 18 inches (rigid) 30°F to 250°F (-1°C to 121°C) 533-377-18 4 inches (rigid)533-377-4 8 inches (rigid)533-377-8 For Use with Siemens TEC Only Point 4 inches (rigid) -40°F to 180°F (-40°C to 82°C) ± 0.50°F (± 0.28°C) @ 77°F (25°C) 538-871 4 inches (rigid), Bracket540-128 18 inches (rigid)540-739 Accessories Flange and Gasket Kit for Variable Insertion Depth of Rigid Point SensorsAQM2000Next >