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Siemens QFA3171 Outdoor Air Relative Humidity Index Track and monitor relative humidity / temperature sensors and transmit temperature and humidity shifts to control system design. Standard available Models are rated at 2 % and 2 %, for humidity only and for the combination of humidity and temperature sensing. Sensors are available with 4 to 20 mA or 0 to 10-volt input signals. Applications : Foodstuff, Medicine, Restaurant, Transportation, and industries by the HACCP system certification Siemens QFA3171 Outdoor Air Relative Humidity Index Track and monitor relative humidity / temperature sensors and transmit temperature and humidity shifts to control system design. Standard available Models are rated at 2 % and 2 %, for humidity only and for the combination of humidity and temperature sensing. Sensors are available with 4 to 20 mA or 0 to 10-volt input signals. Applications : Foodstuff, Medicine, Restaurant, Transportation, and industries by the HACCP system certification Siemens QFA3171 Outdoor Air Relative Humidity Index Track and monitor relative humidity / temperature sensors and transmit temperature and humidity shifts to control system design. Standard available Models are rated at 2 % and 2 %, for humidity only The Siemens QFA3171 Humidity Sensor is a surface mounted, relative humidity sensor with a sensing tip that can be removed and replaced. The sensor comes in a variety of versions to meet your specific needs. The standard available models are rated for 2% and 2% relative humidity, or combining humidity with a sense of temperature. The sensors are accessible with 4 to 20 mA, or 0 to 10 Vdc output signals. Features of Siemens QFA3171 Humidity Sensor: 4 to 20 mA or 0 to 10 Vdc output signals High degree of accuracy Removable, replaceable sensing tip sold separately on B-39 “D” suffix models include LCD Display*

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Siemens Testing and Measuring Instruments

Top Selling Siemens Testing and Measuring Instruments Products Price List for April 2026