Model-HWT250

Supported Applications

The Dwyer HWT250 Bi-Metal Thermometer is designed for hot water applications. The product overview identifies typical uses including heating coils, hydronic radiant in-floor systems, and outdoor wood furnaces.

Operating Conditions & Performance

This series measures temperature within a range of 30 to 250°F (0 to 120°C) with an accuracy of ±5°F (±2°C). The ambient temperature limits are specified as -40 to 250°F (-40 to 120°C). The instrument features a 2" dial size and utilizes dual scales for reading in °F and °C. A glass lens protects the display.

Construction Materials

• Housing Material: Zinc plated brass
• Wetted Materials: Stem and well brass

The process connection is 1/2 - 14 NPT. The stem length is documented as 0.2-1/2 in [0.0635 in]. A California Proposition 65 warning regarding cancer and reproductive harm applies to this product.

Configuration Options

The HWT250 series includes a calibration screw located in the stem for easy adjustment. The available configuration is fixed with the following characteristics:

• Dial Size: 2"
• Lens Type: Glass
• Scales: Dual °F/°C
• Process Connection: 1/2 - 14 NPT

No electrical output, pressure rating, burst pressure, or enclosure ratings are specified for this series. No vibration, shock, humidity, or media compatibility data beyond the wetted materials is provided.

Key Product Differences

The bundle documents a single model number guide: HWT250. There are no alternative housings, sensor elements, output signals, or special-service options listed for this series in the source documentation.