Dwyer BTT-I06-1 Immersion Temperature Sensor – Reliable Water Temperature Measurement for HVAC Systems

The Dwyer BTT-I06-1 immersion temperature sensor uses a Pt1000 RTD with 4–20 mA output for HVAC water applications. Designed for immersion mounting in piping systems, it delivers accurate and stable temperature measurement for chiller and boiler systems. Officially distributed by DLK.

Dwyer BTT-I06-1 Immersion Temperature Sensor – Reliable Water Temperature Measurement for HVAC Systems

In HVAC systems that rely on water as the heat transfer medium, accurate water temperature measurement is essential for maintaining system efficiency, stability, and control performance. The Dwyer BTT-I06-1 immersion temperature sensor is designed specifically for direct temperature measurement of water and other compatible liquids in HVAC and building automation applications.

The Dwyer BTT-I06-1 is part of the BTT Temperature Transmitter series from Dwyer Instruments, a trusted manufacturer of HVAC and industrial measurement devices. This model is imported and officially distributed by DLK – DLK Trading Service Company Limited, ensuring genuine products, correct technical specifications, and reliable engineering support for projects.

Operating Principle of the Dwyer BTT-I06-1 Immersion Temperature Sensor

The Dwyer BTT-I06-1 uses a Pt1000 RTD sensing element, which provides stable and repeatable temperature measurement across the typical operating range of HVAC water systems. As the temperature of the water changes, the electrical resistance of the Pt1000 element changes proportionally.

The integrated transmitter electronics convert this resistance change into a 4–20 mA output signal, a standard widely used in HVAC and industrial control systems. This current output ensures reliable signal transmission over long distances and strong resistance to electrical noise, making it suitable for mechanical rooms and plant environments.

With its immersion mounting design, the probe is inserted directly into the water flow or fluid volume, allowing the sensor to measure the actual medium temperature rather than surface or ambient conditions.

Typical Applications of the Dwyer BTT-I06-1 in Water-Based Systems

Chilled Water Systems

In central chilled water plants, the Dwyer BTT-I06-1 is commonly installed on supply or return piping to monitor water temperature. The measured signal supports precise chiller control, pump modulation, and valve operation, helping maintain design performance and energy efficiency.

Hot Water and Boiler Systems

For hot water loops and boiler applications, continuous and accurate temperature monitoring is critical for both safety and efficiency. The Dwyer BTT-I06-1 provides reliable water temperature feedback to control systems, enabling stable heating control and early detection of abnormal operating conditions.

AHU and FCU Water Coils

In air handling units and fan coil units that use water coils, the Dwyer BTT-I06-1 is used to measure entering or leaving water temperature. This information helps BMS systems evaluate heat exchange performance and optimize valve control strategies.

Industrial Water Circulation Systems

Beyond HVAC, the Dwyer BTT-I06-1 is also suitable for industrial water circulation or process support systems where accurate liquid temperature measurement and integration with PLC or DCS systems are required.

Benefits of Using the Dwyer BTT-I06-1

The Dwyer BTT-I06-1 offers an accuracy of ±0.5°C at 25°C, meeting the requirements of most HVAC control applications. The 4–20 mA output signal ensures compatibility with standard controllers and minimizes signal loss over long cable runs.

Its 6-inch stainless steel immersion probe provides adequate insertion depth for stable and accurate water temperature measurement. The enclosure is rated NEMA 4X (IP66), allowing the sensor to operate reliably in humid mechanical rooms or plant environments.

The wide 13–36 VDC power supply range allows easy integration into existing HVAC control panels without the need for specialized power sources.

Key Technical Specifications of the Dwyer BTT-I06-1

How to Select the Dwyer BTT-I06-1 for Your Application

When selecting a water temperature sensor, engineers should consider the type of fluid, installation location, and required output signal. The Dwyer BTT-I06-1 is well suited for standard HVAC water systems where direct immersion measurement and 4–20 mA signal transmission are required.

For applications that require different probe lengths or duct air temperature measurement instead of liquid measurement, other configurations within the Dwyer BTT series may be more appropriate. However, for most chilled water and hot water HVAC applications, the Dwyer BTT-I06-1 offers a practical and reliable solution.

DLK Trading Service Company Limited

Purchasing the Dwyer BTT-I06-1 from DLK ensures genuine products, correct configuration, and full technical documentation in accordance with project requirements.

DLK’s technical team has hands-on experience with HVAC and building automation systems, providing professional support for sensor selection, system integration, and commissioning. This makes DLK a reliable partner for contractors, OEMs, and project owners using Dwyer temperature transmitters in water-based HVAC systems.