Description
The Siemens 544-342-8 is a precision duct temperature sensor engineered for building automation and HVAC control applications. Utilizing a Platinum RTD (Pt RTD) sensing element with a 1,000 Ohm resistance output, this sensor delivers highly accurate and stable temperature readings across a wide operating range, making it an ideal choice for air handling units, ductwork monitoring, and commercial HVAC systems.
Key Features
- Sensing Element: Platinum RTD (Pt RTD), 1k Ohm output signal
- Temperature Range: -40°F to 180°F (-40°C to 82°C)
- Probe Length: 8 feet (flexible), ideal for deep duct insertion and hard-to-reach installations
- Connection Type: Lead wire termination for straightforward field wiring
- Output Signal: 375a
- Display: None — designed for integration with building automation system (BAS) controllers
- Manufacturer: Siemens Building Technology
Application
The 544-342-8 is well-suited for supply air, return air, and mixed air temperature sensing in commercial and light industrial HVAC ductwork. The flexible 8-foot probe allows installers to position the sensing element accurately within the airstream, even in large or complex duct configurations. The Pt RTD 1k Ohm element provides superior linearity and repeatability compared to thermistor-based sensors, ensuring consistent performance over the life of the installation.
Installation Notes
- Lead wire connection simplifies integration with field controllers and DDC panels
- Flexible probe design accommodates a variety of duct sizes and mounting orientations
- No on-board display — readings are transmitted directly to the connected BAS or controller
- Compatible with Siemens Building Technology control systems and third-party DDC controllers accepting 1k Ohm Pt RTD inputs
Specifications
- SKU: 544-342-8
- Brand: Siemens Building Technology
- Sensor Type: Platinum RTD (Pt RTD)
- Resistance: 1,000 Ohm (1k Ohm)
- Output Signal: 375a
- Temperature Range: -40°F to 180°F (-40°C to 82°C)
- Probe Length: 8 ft (flexible)
- Connection: Lead wires
- Display: None
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