Description
1. Introduction to Bimetal Thermometer MT-T120BM
The Bimetal Thermometer MT-T120BM is a premium industrial temperature measurement instrument designed for precise and reliable monitoring of temperature in demanding applications. Featuring a bimetallic sensing element, this thermometer converts temperature changes into mechanical movement, displayed via a pointer across the dial, offering a highly accurate visual reading. It is widely used in industries such as chemical processing, HVAC systems, power generation, pharmaceutical manufacturing, food and beverage production, and water treatment plants.
The MT-T120BM comes in dial sizes of 100DN, 125DN, and 160DN, offering excellent readability for a variety of installation locations. With a temperature range of -70°C to 600°C, it is suitable for applications spanning from low-temperature cooling systems to high-temperature process lines. Its versatile design allows it to meet both operational and safety requirements across diverse industrial environments.
This thermometer also provides back center connection mounting with adjustable angle capability, giving users the flexibility to orient the dial for optimal visibility after installation. The external zero adjustment feature further enhances usability, enabling quick calibration in the field.
2. Key Technical Specifications
| Feature | Specification |
|---|---|
| Dial Sizes | 100DN / 125DN / 160DN |
| Temperature Range | -70°C … 0 … 600°C |
| Mounting Style | Back Center, Angle Adjustable Mounting |
| Stem Diameter | 6.0 mm |
| Stem Length | 25 mm – 2000 mm (customizable) |
| Process Connection | ½” BSP (M) / ½” NPT (M), Adjustable |
| Ingress Protection | IP65 |
| External Adjustment | Zero adjustment for calibration |
These specifications ensure the MT-T120BM is a versatile instrument capable of accurate temperature monitoring in a wide range of industrial processes, including high-pressure and high-temperature environments.
3. Working Principle of the Bimetal Thermometer MT-T120BM
The Bimetal Thermometer MT-T120BM operates on the bimetallic strip principle, a mechanical method of temperature measurement. Two metals with differing thermal expansion coefficients are bonded together. When temperature changes, the bimetallic strip bends due to unequal expansion. This mechanical displacement moves the pointer across the dial scale, providing a direct visual indication of the temperature.
Advantages of this mechanism include:
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Accurate and linear measurement across the full scale
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Completely mechanical operation; no power source required
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High reliability and low maintenance due to simple design
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Robustness suitable for industrial vibration and high-temperature conditions
This simple yet effective design ensures long-term operational stability.
4. Dial Readability and Size Options
The MT-T120BM is available in 100DN, 125DN, and 160DN dial sizes, allowing users to choose the most suitable model depending on installation visibility and accessibility:
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100DN: Compact installations, limited panel space
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125DN: Medium visibility for standard industrial panels
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160DN: Large dial for long-distance readability and control panels
The dial face features high-contrast markings and a clearly visible pointer, ensuring accurate readings in both low-light and high-glare environments. Its 0…600°C scale with negative range ensures it is suitable for both cold and high-temperature applications.
5. Stem Design and Temperature Coverage
The MT-T120BM is equipped with a 6.0 mm diameter stem, available in customizable lengths ranging from 25 mm to 2000 mm, allowing it to reach the optimal measurement point in tanks, pipes, boilers, or industrial equipment. The long stem options provide precise temperature readings directly from the process medium, minimizing thermal lag and improving measurement accuracy.
The thermometer covers an extensive temperature range from -70°C to 600°C, making it suitable for:
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Low-temperature refrigeration or cryogenic systems
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Steam and hot water systems
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Industrial ovens and furnaces
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Chemical reactors and process vessels
Its wide range ensures flexibility across a variety of industrial applications.
6. Back Center Mounting and Angle Adjustable Connection
One of the most versatile features of the MT-T120BM is the back center mounting with angle adjustable capability. This feature allows the thermometer to be rotated or tilted after installation, providing optimal dial visibility for operators and technicians. It ensures accurate readings even in confined or awkward spaces.
The adjustable process connection supports both ½” BSP (M) and ½” NPT (M) threaded interfaces, making it compatible with international industrial standards and enabling secure, leak-free installations in various piping and vessel systems.
7. IP65 Protection and Environmental Durability
The MT-T120BM is rated IP65, providing robust protection against:
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Dust ingress
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Water sprays and low-pressure jets
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Industrial contaminants
This protection ensures that the thermometer maintains performance in challenging environments, including chemical plants, outdoor installations, and high-humidity production lines. Its corrosion-resistant materials and rugged design contribute to long service life.
8. External Zero Adjustment
The external zero adjustment feature allows technicians to calibrate the thermometer without disassembly. This capability ensures:
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Accurate readings over time
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Quick correction of any pointer drift
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Simplified field maintenance and calibration
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Reduced system downtime
This feature is particularly valuable in applications where precise temperature control is critical, such as in food processing, pharmaceuticals, and chemical production.
9. Applications of Bimetal Thermometer MT-T120BM
The MT-T120BM is suitable for a wide range of industries and applications:
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Chemical and Petrochemical Plants: Boilers, reactors, heat exchangers
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Oil and Gas: Pipelines, storage tanks, process equipment
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Food and Beverage: Pasteurization, cooking, cooling lines
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Pharmaceutical Manufacturing: Clean rooms and process monitoring
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HVAC Systems: Heating, ventilation, and cooling system monitoring
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Power Plants: Steam lines, turbine feedwater, and boiler monitoring
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Water Treatment Facilities: Pumps, tanks, and filtration processes
Its versatility makes it ideal for any industrial or commercial setting requiring reliable temperature monitoring.
10. Advantages of Bimetal Thermometer MT-T120BM
The MT-T120BM offers multiple advantages:
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Wide temperature range for extreme conditions
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Adjustable dial and angle for optimal readability
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Customizable stem lengths for accurate insertion
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IP65 protection ensures reliability in harsh conditions
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External zero adjustment allows easy calibration
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Low maintenance and highly durable bimetallic construction
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Compatibility with both BSP and NPT threaded connections
These benefits make it an ideal choice for engineers, technicians, and plant operators seeking dependable and precise temperature measurement instruments.
11. Conclusion
The Bimetal Thermometer MT-T120BM is a high-performance, versatile instrument suitable for a wide variety of industrial temperature measurement applications. With dial sizes of 100DN, 125DN, and 160DN, a broad range from -70°C to 600°C, back center mounting with angle adjustment, customizable stem lengths, IP65 ingress protection, and external zero adjustment, it ensures accurate, reliable, and long-lasting performance.
Whether used in chemical plants, power stations, HVAC systems, food processing lines, or pharmaceutical manufacturing, the MT-T120BM delivers precise readings with minimal maintenance. Its flexibility and durability make it a preferred choice for industrial operators seeking efficiency, safety, and accuracy.
