Siemens Building Technology QFM3171 Sensor
The Siemens QFM3171 is a high-precision duct relative humidity and temperature sensor designed for demanding HVAC applications where signal stability is paramount. Engineered for seamless integration into building automation systems (BAS), this unit provides dual 4-20mA output signals for both humidity and temperature, ensuring reliable data transmission even over long cable runs. For technicians performing retrofits, the QFM3171 serves as the direct replacement for HD2XMSTA1, eliminating the need for extensive field modifications.
Featuring an adjustable immersion length of 3.5 to 8 inches (90 to 206 mm) via a secure mounting flange, the sensor utilizes a capacitive humidity sensing element for rapid response times and a ±2% accuracy rating across the 0-100% RH range. The rugged IP65-rated housing protects the terminal block connections, making it an ideal choice for controlled environment monitoring in hospitals, data centers, and industrial facilities. This sensor operates on a 24 VAC/VDC power supply and supports selectable temperature ranges including 0–50 °C, -35–35 °C, and 0–70 °C, providing the versatility needed for economizer control and supply air monitoring.
Key Benefits- Dual-Signal Output: Provides independent 4-20mA loops for humidity and temperature for cleaner integration into industrial controllers.
- Fields-Adjustable Depth: The adjustable probe length ensures the sensing element is positioned in the center of the airflow for maximum accuracy.
- Long-Term Stability: High-quality Symmetron sensing technology provides drift-free performance in high-humidity environments.
- Retrofit Compatibility: Specifically designed to replace legacy Siemens HD2XMSTA1 sensors without additional mounting hardware.
- Industrial Durability: The polycarbonate enclosure and IP65 rating allow for reliable operation in dusty or damp mechanical rooms.
Is this sensor compatible with my existing Siemens BAS?
Yes, the Siemens QFM3171 is a standard 24V component that outputs universal 4-20mA signals, making it compatible with most HVAC controllers and legacy Siemens systems.
Does this unit come with a display for field readings?
The QFM3171 is the no-display model. For applications requiring a local readout, please look for the "D" suffix version (QFM3171D).
What is the proper wiring for the humidity loop?
Terminals G1(+) and I1(-) for the humidity output must always be powered even if the system only requires the temperature output signal for operation.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $259.19
-65%$259.19
$90.72Siemens Building Technology QFM3171 Sensor
The Siemens QFM3171 is a high-precision duct relative humidity and temperature sensor designed for demanding HVAC applications where signal stability is paramount. Engineered for seamless integration into building automation systems (BAS), this unit provides dual 4-20mA output signals for both humidity and temperature, ensuring reliable data transmission even over long cable runs. For technicians performing retrofits, the QFM3171 serves as the direct replacement for HD2XMSTA1, eliminating the need for extensive field modifications.
Featuring an adjustable immersion length of 3.5 to 8 inches (90 to 206 mm) via a secure mounting flange, the sensor utilizes a capacitive humidity sensing element for rapid response times and a ±2% accuracy rating across the 0-100% RH range. The rugged IP65-rated housing protects the terminal block connections, making it an ideal choice for controlled environment monitoring in hospitals, data centers, and industrial facilities. This sensor operates on a 24 VAC/VDC power supply and supports selectable temperature ranges including 0–50 °C, -35–35 °C, and 0–70 °C, providing the versatility needed for economizer control and supply air monitoring.
Key Benefits- Dual-Signal Output: Provides independent 4-20mA loops for humidity and temperature for cleaner integration into industrial controllers.
- Fields-Adjustable Depth: The adjustable probe length ensures the sensing element is positioned in the center of the airflow for maximum accuracy.
- Long-Term Stability: High-quality Symmetron sensing technology provides drift-free performance in high-humidity environments.
- Retrofit Compatibility: Specifically designed to replace legacy Siemens HD2XMSTA1 sensors without additional mounting hardware.
- Industrial Durability: The polycarbonate enclosure and IP65 rating allow for reliable operation in dusty or damp mechanical rooms.
Is this sensor compatible with my existing Siemens BAS?
Yes, the Siemens QFM3171 is a standard 24V component that outputs universal 4-20mA signals, making it compatible with most HVAC controllers and legacy Siemens systems.
Does this unit come with a display for field readings?
The QFM3171 is the no-display model. For applications requiring a local readout, please look for the "D" suffix version (QFM3171D).
What is the proper wiring for the humidity loop?
Terminals G1(+) and I1(-) for the humidity output must always be powered even if the system only requires the temperature output signal for operation.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Siemens QFM3171 is a high-precision duct relative humidity and temperature sensor designed for demanding HVAC applications where signal stability is paramount. Engineered for seamless integration into building automation systems (BAS), this unit provides dual 4-20mA output signals for both humidity and temperature, ensuring reliable data transmission even over long cable runs. For technicians performing retrofits, the QFM3171 serves as the direct replacement for HD2XMSTA1, eliminating the need for extensive field modifications.
Featuring an adjustable immersion length of 3.5 to 8 inches (90 to 206 mm) via a secure mounting flange, the sensor utilizes a capacitive humidity sensing element for rapid response times and a ±2% accuracy rating across the 0-100% RH range. The rugged IP65-rated housing protects the terminal block connections, making it an ideal choice for controlled environment monitoring in hospitals, data centers, and industrial facilities. This sensor operates on a 24 VAC/VDC power supply and supports selectable temperature ranges including 0–50 °C, -35–35 °C, and 0–70 °C, providing the versatility needed for economizer control and supply air monitoring.
Key Benefits- Dual-Signal Output: Provides independent 4-20mA loops for humidity and temperature for cleaner integration into industrial controllers.
- Fields-Adjustable Depth: The adjustable probe length ensures the sensing element is positioned in the center of the airflow for maximum accuracy.
- Long-Term Stability: High-quality Symmetron sensing technology provides drift-free performance in high-humidity environments.
- Retrofit Compatibility: Specifically designed to replace legacy Siemens HD2XMSTA1 sensors without additional mounting hardware.
- Industrial Durability: The polycarbonate enclosure and IP65 rating allow for reliable operation in dusty or damp mechanical rooms.
Is this sensor compatible with my existing Siemens BAS?
Yes, the Siemens QFM3171 is a standard 24V component that outputs universal 4-20mA signals, making it compatible with most HVAC controllers and legacy Siemens systems.
Does this unit come with a display for field readings?
The QFM3171 is the no-display model. For applications requiring a local readout, please look for the "D" suffix version (QFM3171D).
What is the proper wiring for the humidity loop?
Terminals G1(+) and I1(-) for the humidity output must always be powered even if the system only requires the temperature output signal for operation.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
