Siemens QFM4171 Duct Humidity And Temperature Sensor

Product Description

The SIEMENS QFM4171 is a duct humidity and temperature sensor with 2% accuracy and 4 to 20 mA outputs for both temperature and humidity, housed in a plastic enclosure. It is designed to monitor and transmit humidity and temperature changes to building control systems. Ideal for use in humidification, dehumidification, supply, discharge, and return air applications.

• Temperature measuring range of 0 C to 50 C, -40 C to 70 C, or -35 C to 35 C
• Operating voltage of 13.5 to 35 VDC
• Features a terminal strip for easy connection

Product Highlights

This sensor provides accurate humidity and temperature readings for efficient building control.

Product Information

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: QFM4171

Technical Specifications

• Mounting: Duct Mount
• Enclosure: Plastic
• Configuration: Duct
• Sensors Application: Humidity, Temperature
• Output Voltage Signal Range: 4 To 20 mA
• Signal output humidity: DC 4...20 mA
• Signal output temperature: DC 4...20 mA
• Operating voltage: DC 13.5…35 V
• Measuring range, temperature: 0…50 °C, -35…35 °C, -40…70 °C
• Measurement range humidity: 0…100 % r.h.
• Measurement accuracy: At 15…35 °C: ±0.6 K, At 40…70 °C: ±0.8 K23 % r.h., 0…100 % r.h.: ±2 % r.h.±2 % r.h.
• Time constant: Humidity: 20 s, Air v=2 m/s: 210 s
• Immersion length: 90…206 mm
• Display: No display
• Degree of protection: IP65
• Dimensions (W x H x D): 80 x 117 x 39 mm
• Accuracy: 2%
• Housing Material: Poly
• Sensor Element: 1K Platinum RTD 385
• Output: 4 - 20 mA
• Humidity Range: 0-100%
• Power Requirements: 24 VAC/VDC
• Application: Humidification,Dehumidification,Supply,Discharge,Return Air,Economizers,Clean Rooms,Data Centers,Process Control,Schools,Hospitals,Office Buildings
• Mount: Duct
• Manufacturer Part Number: QFM4171
• Manufacturer: Siemens
• Product Series: QFM
• Family Series: Siemens Building Technologies HVAC Sensors, QFM Series
• Description: Sensor (Duct) RH: 4-20MA / T:
• Input: 13.5-35 VDC
• Operating Temperature: 32-122 °F