Siemens 544-339-8 Duct Temperature Sensor, Pt RTD 1k Ohm, 8″ Probe

Description

The Siemens 544-339-8 is a precision duct-mount temperature sensor engineered for reliable temperature monitoring in commercial HVAC and building automation applications. Utilizing a Platinum RTD (Pt 1k Ohm) sensing element, this sensor delivers highly accurate and stable temperature readings across a wide operating range, making it an ideal choice for air handling units, ductwork, and building management systems.

Key Features

• Sensing element: Platinum RTD (Pt), 1,000 Ohm resistance
• Output signal: 375a
• Temperature range: -40°F to 180°F (-40°C to 82°C)
• Probe length: 8 inches, rigid construction for secure duct insertion
• Connection type: Lead wires for straightforward field wiring
• No display — designed for integration with building automation controllers
• Duct-mount configuration for direct air-stream temperature sensing

Application

The 544-339-8 is designed for use in commercial and light industrial HVAC systems where accurate duct air temperature measurement is critical. Its rigid 8-inch probe ensures proper insertion depth into ductwork for representative air temperature readings. The Pt 1k Ohm RTD element provides excellent linearity and repeatability, supporting precise control loops in building automation systems (BAS) and direct digital control (DDC) applications.

Specifications

• Brand: Siemens Building Technology
• Model / SKU: 544-339-8
• Sensor Type: Platinum RTD (Pt 1k Ohm)
• Output Signal: 375a
• Temperature Range: -40°F to 180°F (-40°C to 82°C)
• Probe Length: 8 inches (rigid)
• Connection: Lead wires
• Display: None
• Mounting: Duct-mount