Siemens Building Technology QFA2001 Sensor
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Siemens Building Technology QFA2001 Sensor

Siemens Building Technology QFA2001 Sensor

The Siemens Building Technology QFA2001 Sensor is a high-performance room humidity sensor designed for demanding commercial HVACR control environments. This wall-mounted humidity transmitter provides precise monitoring by converting measured relative humidity into a standard 4-20mA output signal, ensuring seamless integration with building automation systems (BAS). Built for reliability in indoor air quality monitoring, the unit features a 0-100% RH measurement range and utilizes a two-wire connection via a terminal block for streamlined field installation. Its sleek, white polycarbonate housing is ideal for offices, hospitals, and cleanrooms where a no-display humidity sensor is preferred to prevent unauthorized tampering or to maintain a clean aesthetic.

For veteran technicians, the QFA2001 offers ±5% accuracy and a fast 20-second time constant, providing the HVAC relative humidity control performance required for precise humidification and dehumidification cycles. This analog humidity sensor is engineered to withstand diverse operating conditions while maintaining professional-grade stability without the need for frequent recalibration.

Key Benefits for Contractors
  • Standardized Integration: The 4-20mA humidity transmitter output allows for long cable runs without signal degradation, perfect for large-scale facilities.
  • Simplified Wiring: Features a terminal block connection for rapid two-wire sensor assembly on the job site.
  • Industrial Durability: Housed in a UL-listed polycarbonate enclosure (IP30 rated) that resists impact and environmental stressors in high-traffic zones.
  • Precise Measurement: Full-range 0-100% relative humidity sensing capability covers all critical indoor environmental requirements.
Common Questions for HVAC Professionals

Is the Siemens QFA2001 compatible with standard 24V DC power?
Yes, this sensor operates on a DC 13.5 to 35V power supply, making it compatible with most standard 24V DC HVAC control loops.

Does this unit include a temperature output?
No, the QFA2001 is a dedicated room RH sensor. If your application requires integrated temperature sensing, you should look into the QFA2060 or QFA2071 series.

Can I use this sensor in outdoor applications?
This model is specifically designed for indoor room humidity monitoring. For outdoor air or duct applications, a NEMA 4X rated or duct-mount probe would be required.

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.

$65.07

Original: $185.91

-65%
Siemens Building Technology QFA2001 Sensor

$185.91

$65.07

Siemens Building Technology QFA2001 Sensor

The Siemens Building Technology QFA2001 Sensor is a high-performance room humidity sensor designed for demanding commercial HVACR control environments. This wall-mounted humidity transmitter provides precise monitoring by converting measured relative humidity into a standard 4-20mA output signal, ensuring seamless integration with building automation systems (BAS). Built for reliability in indoor air quality monitoring, the unit features a 0-100% RH measurement range and utilizes a two-wire connection via a terminal block for streamlined field installation. Its sleek, white polycarbonate housing is ideal for offices, hospitals, and cleanrooms where a no-display humidity sensor is preferred to prevent unauthorized tampering or to maintain a clean aesthetic.

For veteran technicians, the QFA2001 offers ±5% accuracy and a fast 20-second time constant, providing the HVAC relative humidity control performance required for precise humidification and dehumidification cycles. This analog humidity sensor is engineered to withstand diverse operating conditions while maintaining professional-grade stability without the need for frequent recalibration.

Key Benefits for Contractors
  • Standardized Integration: The 4-20mA humidity transmitter output allows for long cable runs without signal degradation, perfect for large-scale facilities.
  • Simplified Wiring: Features a terminal block connection for rapid two-wire sensor assembly on the job site.
  • Industrial Durability: Housed in a UL-listed polycarbonate enclosure (IP30 rated) that resists impact and environmental stressors in high-traffic zones.
  • Precise Measurement: Full-range 0-100% relative humidity sensing capability covers all critical indoor environmental requirements.
Common Questions for HVAC Professionals

Is the Siemens QFA2001 compatible with standard 24V DC power?
Yes, this sensor operates on a DC 13.5 to 35V power supply, making it compatible with most standard 24V DC HVAC control loops.

Does this unit include a temperature output?
No, the QFA2001 is a dedicated room RH sensor. If your application requires integrated temperature sensing, you should look into the QFA2060 or QFA2071 series.

Can I use this sensor in outdoor applications?
This model is specifically designed for indoor room humidity monitoring. For outdoor air or duct applications, a NEMA 4X rated or duct-mount probe would be required.

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.

Product Information

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Description

The Siemens Building Technology QFA2001 Sensor is a high-performance room humidity sensor designed for demanding commercial HVACR control environments. This wall-mounted humidity transmitter provides precise monitoring by converting measured relative humidity into a standard 4-20mA output signal, ensuring seamless integration with building automation systems (BAS). Built for reliability in indoor air quality monitoring, the unit features a 0-100% RH measurement range and utilizes a two-wire connection via a terminal block for streamlined field installation. Its sleek, white polycarbonate housing is ideal for offices, hospitals, and cleanrooms where a no-display humidity sensor is preferred to prevent unauthorized tampering or to maintain a clean aesthetic.

For veteran technicians, the QFA2001 offers ±5% accuracy and a fast 20-second time constant, providing the HVAC relative humidity control performance required for precise humidification and dehumidification cycles. This analog humidity sensor is engineered to withstand diverse operating conditions while maintaining professional-grade stability without the need for frequent recalibration.

Key Benefits for Contractors
  • Standardized Integration: The 4-20mA humidity transmitter output allows for long cable runs without signal degradation, perfect for large-scale facilities.
  • Simplified Wiring: Features a terminal block connection for rapid two-wire sensor assembly on the job site.
  • Industrial Durability: Housed in a UL-listed polycarbonate enclosure (IP30 rated) that resists impact and environmental stressors in high-traffic zones.
  • Precise Measurement: Full-range 0-100% relative humidity sensing capability covers all critical indoor environmental requirements.
Common Questions for HVAC Professionals

Is the Siemens QFA2001 compatible with standard 24V DC power?
Yes, this sensor operates on a DC 13.5 to 35V power supply, making it compatible with most standard 24V DC HVAC control loops.

Does this unit include a temperature output?
No, the QFA2001 is a dedicated room RH sensor. If your application requires integrated temperature sensing, you should look into the QFA2060 or QFA2071 series.

Can I use this sensor in outdoor applications?
This model is specifically designed for indoor room humidity monitoring. For outdoor air or duct applications, a NEMA 4X rated or duct-mount probe would be required.

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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