Dwyer Instruments HWT250 Thermometer
The Dwyer Instruments HWT250 is a heavy-duty bi-metal hot water thermometer engineered for precise thermal monitoring in hydronic heating systems, boiler loops, and outdoor wood furnaces. Featuring a 2-inch dial with high-contrast dual scales in both Fahrenheit and Celsius, this instrument provides reliable temperature tracking across a 30 to 250 degree range. The zinc-plated brass housing and glass lens offer the durability required for demanding mechanical rooms, while the brass stem and separable well ensure easy maintenance without draining the system. Contractors value the integrated calibration screw located on the stem, allowing for field adjustments to maintain tight ±5°F accuracy. Designed for hot water applications, the 1/2" NPT connection provides standard compatibility for heating coils and radiant in-floor systems. By utilizing a brass thermowell, the sensor remains protected from process temperature extremes and fluid corrosion, ensuring long-term performance in high-flow environments.
Key Benefits- Separable Brass Well: Allows for thermometer replacement or service without depressurizing the hydronic system.
- Internal Calibration Screw: Enables fast, precise field zeroing to ensure high instrument accuracy.
- Dual Scale Readout: Clearly displays both Fahrenheit and Celsius for versatile HVAC monitoring.
- Rugged Construction: A glass lens and zinc-plated brass body withstand humidity and heat in boiler applications.
- NPT Thread Compatibility: Standard 1/2" male NPT connection fits most common boiler manifolds and pipe tees.
Can the HWT250 be used for steam applications?
No, this unit is specifically rated for hot water applications with a maximum limit of 250°F. For steam, an industrial-grade pressure gauge or a higher-range thermometer is required.
How do I calibrate this thermometer in the field?
The stem features an adjustment screw. While the unit arrives factory-set, you can verify it against a known standard and turn the screw to align the 2-inch dial needle correctly.
Is the thermowell included with the HWT250?
Yes, this model includes the brass stem and well (separable), which provides the necessary protection for the bi-metal element from the system fluid.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $35.99
-65%$35.99
$12.60Dwyer Instruments HWT250 Thermometer
The Dwyer Instruments HWT250 is a heavy-duty bi-metal hot water thermometer engineered for precise thermal monitoring in hydronic heating systems, boiler loops, and outdoor wood furnaces. Featuring a 2-inch dial with high-contrast dual scales in both Fahrenheit and Celsius, this instrument provides reliable temperature tracking across a 30 to 250 degree range. The zinc-plated brass housing and glass lens offer the durability required for demanding mechanical rooms, while the brass stem and separable well ensure easy maintenance without draining the system. Contractors value the integrated calibration screw located on the stem, allowing for field adjustments to maintain tight ±5°F accuracy. Designed for hot water applications, the 1/2" NPT connection provides standard compatibility for heating coils and radiant in-floor systems. By utilizing a brass thermowell, the sensor remains protected from process temperature extremes and fluid corrosion, ensuring long-term performance in high-flow environments.
Key Benefits- Separable Brass Well: Allows for thermometer replacement or service without depressurizing the hydronic system.
- Internal Calibration Screw: Enables fast, precise field zeroing to ensure high instrument accuracy.
- Dual Scale Readout: Clearly displays both Fahrenheit and Celsius for versatile HVAC monitoring.
- Rugged Construction: A glass lens and zinc-plated brass body withstand humidity and heat in boiler applications.
- NPT Thread Compatibility: Standard 1/2" male NPT connection fits most common boiler manifolds and pipe tees.
Can the HWT250 be used for steam applications?
No, this unit is specifically rated for hot water applications with a maximum limit of 250°F. For steam, an industrial-grade pressure gauge or a higher-range thermometer is required.
How do I calibrate this thermometer in the field?
The stem features an adjustment screw. While the unit arrives factory-set, you can verify it against a known standard and turn the screw to align the 2-inch dial needle correctly.
Is the thermowell included with the HWT250?
Yes, this model includes the brass stem and well (separable), which provides the necessary protection for the bi-metal element from the system fluid.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Dwyer Instruments HWT250 is a heavy-duty bi-metal hot water thermometer engineered for precise thermal monitoring in hydronic heating systems, boiler loops, and outdoor wood furnaces. Featuring a 2-inch dial with high-contrast dual scales in both Fahrenheit and Celsius, this instrument provides reliable temperature tracking across a 30 to 250 degree range. The zinc-plated brass housing and glass lens offer the durability required for demanding mechanical rooms, while the brass stem and separable well ensure easy maintenance without draining the system. Contractors value the integrated calibration screw located on the stem, allowing for field adjustments to maintain tight ±5°F accuracy. Designed for hot water applications, the 1/2" NPT connection provides standard compatibility for heating coils and radiant in-floor systems. By utilizing a brass thermowell, the sensor remains protected from process temperature extremes and fluid corrosion, ensuring long-term performance in high-flow environments.
Key Benefits- Separable Brass Well: Allows for thermometer replacement or service without depressurizing the hydronic system.
- Internal Calibration Screw: Enables fast, precise field zeroing to ensure high instrument accuracy.
- Dual Scale Readout: Clearly displays both Fahrenheit and Celsius for versatile HVAC monitoring.
- Rugged Construction: A glass lens and zinc-plated brass body withstand humidity and heat in boiler applications.
- NPT Thread Compatibility: Standard 1/2" male NPT connection fits most common boiler manifolds and pipe tees.
Can the HWT250 be used for steam applications?
No, this unit is specifically rated for hot water applications with a maximum limit of 250°F. For steam, an industrial-grade pressure gauge or a higher-range thermometer is required.
How do I calibrate this thermometer in the field?
The stem features an adjustment screw. While the unit arrives factory-set, you can verify it against a known standard and turn the screw to align the 2-inch dial needle correctly.
Is the thermowell included with the HWT250?
Yes, this model includes the brass stem and well (separable), which provides the necessary protection for the bi-metal element from the system fluid.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
