
Siemens Building Technology QFM2171
The Siemens Building Technology QFM2171 is a high-performance duct relative humidity and temperature sensor designed for integration into commercial HVAC systems. This Q-Series duct sensor utilizes a 4-20mA output signal for both RH and temperature, providing stable and precise data transmission even over long wire runs. Engineered for 5% accuracy, the QFM2171 is ideal for BAS (Building Automation Systems) that require reliable monitoring of supply, return, or exhaust air. The device features an adjustable insertion depth ranging from 3.5 to 8 inches, allowing for flexible mounting via the included flange. Built for the field, this unit utilizes screw terminal blocks for secure wiring and a polycarbonate housing rated at IP54 protection to withstand demanding mechanical room environments. Whether you are managing dew point shifting or basic climate control, the QFM2171 delivers professional-grade sensing without the complexity of a digital display.
Key Benefits- Dual-Loop Output: Provides independent 4-20mA signals for humidity (0-100% RH) and temperature monitoring.
- Field Versatility: The adjustable probe length ensures the sensing element is positioned in the center of the airflow for maximum accuracy.
- Rugged Construction: Features an IP54-rated housing and high-quality sensing elements that resist drift in typical duct conditions.
- Easy Installation: Simplified wiring through a terminal block connection and a standard mounting flange.
- What is the operating voltage for the QFM2171? This sensor typically operates on a DC 13.5 to 35 V power supply, common in industrial and commercial control loops.
- Can the temperature measurement range be adjusted? Yes, the QFM2171 supports multiple selectable temperature ranges (e.g., 0-50°C, -35 to +35°C) via internal jumpers to match your controller's scaling.
- Does this unit include a display? No, the QFM2171 is a "blind" transmitter designed for discreet duct mounting where local readings are not required.
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: $189.41
-65%$189.41
$66.29Siemens Building Technology QFM2171
The Siemens Building Technology QFM2171 is a high-performance duct relative humidity and temperature sensor designed for integration into commercial HVAC systems. This Q-Series duct sensor utilizes a 4-20mA output signal for both RH and temperature, providing stable and precise data transmission even over long wire runs. Engineered for 5% accuracy, the QFM2171 is ideal for BAS (Building Automation Systems) that require reliable monitoring of supply, return, or exhaust air. The device features an adjustable insertion depth ranging from 3.5 to 8 inches, allowing for flexible mounting via the included flange. Built for the field, this unit utilizes screw terminal blocks for secure wiring and a polycarbonate housing rated at IP54 protection to withstand demanding mechanical room environments. Whether you are managing dew point shifting or basic climate control, the QFM2171 delivers professional-grade sensing without the complexity of a digital display.
Key Benefits- Dual-Loop Output: Provides independent 4-20mA signals for humidity (0-100% RH) and temperature monitoring.
- Field Versatility: The adjustable probe length ensures the sensing element is positioned in the center of the airflow for maximum accuracy.
- Rugged Construction: Features an IP54-rated housing and high-quality sensing elements that resist drift in typical duct conditions.
- Easy Installation: Simplified wiring through a terminal block connection and a standard mounting flange.
- What is the operating voltage for the QFM2171? This sensor typically operates on a DC 13.5 to 35 V power supply, common in industrial and commercial control loops.
- Can the temperature measurement range be adjusted? Yes, the QFM2171 supports multiple selectable temperature ranges (e.g., 0-50°C, -35 to +35°C) via internal jumpers to match your controller's scaling.
- Does this unit include a display? No, the QFM2171 is a "blind" transmitter designed for discreet duct mounting where local readings are not required.
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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Product Information
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Description
The Siemens Building Technology QFM2171 is a high-performance duct relative humidity and temperature sensor designed for integration into commercial HVAC systems. This Q-Series duct sensor utilizes a 4-20mA output signal for both RH and temperature, providing stable and precise data transmission even over long wire runs. Engineered for 5% accuracy, the QFM2171 is ideal for BAS (Building Automation Systems) that require reliable monitoring of supply, return, or exhaust air. The device features an adjustable insertion depth ranging from 3.5 to 8 inches, allowing for flexible mounting via the included flange. Built for the field, this unit utilizes screw terminal blocks for secure wiring and a polycarbonate housing rated at IP54 protection to withstand demanding mechanical room environments. Whether you are managing dew point shifting or basic climate control, the QFM2171 delivers professional-grade sensing without the complexity of a digital display.
Key Benefits- Dual-Loop Output: Provides independent 4-20mA signals for humidity (0-100% RH) and temperature monitoring.
- Field Versatility: The adjustable probe length ensures the sensing element is positioned in the center of the airflow for maximum accuracy.
- Rugged Construction: Features an IP54-rated housing and high-quality sensing elements that resist drift in typical duct conditions.
- Easy Installation: Simplified wiring through a terminal block connection and a standard mounting flange.
- What is the operating voltage for the QFM2171? This sensor typically operates on a DC 13.5 to 35 V power supply, common in industrial and commercial control loops.
- Can the temperature measurement range be adjusted? Yes, the QFM2171 supports multiple selectable temperature ranges (e.g., 0-50°C, -35 to +35°C) via internal jumpers to match your controller's scaling.
- Does this unit include a display? No, the QFM2171 is a "blind" transmitter designed for discreet duct mounting where local readings are not required.
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.












