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Siemens Temperature and Humidity Sensor: Wall Mount, -40°F to 158°F, 0 to 10V DC/4 to 20 mA - Room Temperature & Humidity Sensors
SiemensRoom Temperature & Humidity Sensors

Siemens Temperature and Humidity Sensor: Wall Mount, -40°F to 158°F, 0 to 10V DC/4 to 20 mA

The SIEMENS QFA32SS.EWSN is a wall-mounted room temperature and humidity sensor with no display, housed in plastic and including matching gaskets. It provides a 0 to 10V DC humidity output and a 0 to 10V DC…

SKU 3G-OTH-70641

Brand
Siemens
Item
Temperature and Humidity Sensor: Wall Mount, -40°F to 158°F, 0 to 10V DC/4 to 20 mA
Category
Room Temperature & Humidity Sensors
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Technical Specifications

Siemens
Manufacturer Part Number
QFA32SS.EWSN
Type
-40°F to 158°F, 0 to 10V DC/4 to 20 mA, Polycarbonate
Display
No Display
Housing
Plastic
Includes
Matching Gaskets
Product Type
Room Temperature and Humidity Sensor
Humidity Output
0 to 10V DC
Mounting Location
Wall Mount
Temperature Accuracy
±0.90°F
Relative Humidity Range
0 to 100%
Temperature Signal Output
0 to 10V DC
Electrical Connection Type
Screw Terminals
Relative Humidity Accuracy
±2% of Full Scale
Compatible Building Automation Protocols
MP-Bus
For Use With Building Automation Systems
Building Automation System Compatible
View Full Spec Sheet

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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS QFA32SS.EWSN is a wall-mounted room temperature and humidity sensor with no display, housed in plastic and including matching gaskets. It provides a 0 to 10V DC humidity output and a 0 to 10V DC temperature signal output, with a temperature accuracy of ±0.90°F and a relative humidity accuracy of ±2% of full scale over a 0 to 100% range. The sensor uses screw terminals for electrical connection and is compatible with MP-Bus building automation protocols for use with building automation systems.

Used in

Common applications for Siemens
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks

Siemens Products

3G Electric supplies Siemens room temperature & humidity sensors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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