Dial thermometers are reliable and innovative instruments designed to measure thermal temperatures even in harsh environmental conditions. These thermometers monitor the temperature in everyday applications using integrated bimetal helix coil technology. They feature easy-to-read dials with a pointer to indicate elevated temperature levels in various applications. Additionally, they do not require power from batteries and are resistant to wear.
What Are the Key Features of Dial Thermometers?
These versatile thermometers offer a multitude of key characteristics with various advantages, such as:
- Feature dial and digital display.
- High accuracy and easy installation.
- Durable and rugged thermometers, ideal for a variety of day-to-day applications.
- Economical and simple to use.
- Needle absorbs vibrational or shock energy.
- Made from high-quality materials.
- Feature dial features a temperature scale, offering convenient reading.
- Diverse range of designs.
How Many Types of Dial Thermometers Are There?
The following are the common dial-thermometer types and include:
- Bimetallic - These thermometers utilize a bimetal element (spring) for sensing temperature.
- Vapor-tension-based – These thermometer types consist of permanent gases—made from different liquids.
- Liquid or gas-filled – These thermometers feature gas or vapour as a temperature sensing component and are liquid, or gas actuated. Like in common thermometers, the filled gas or liquid expands at a rising temperature, thus indicating the temperature levels.
How to Use Dial Thermometers?
A dial thermometer consists of a needle and a temperature sensor. Depending on the type of thermometer for specific applications, they are effortless to use. For instance, a dial probe thermometer can be used by simply inserting a portion (50 mm) into the liquid or other measured sources. It is crucial to insert the thermometer’s stem carefully and firmly to avoid stem bending, especially in hard or frozen materials. Additionally, hold them from the stem while operating, not from the dial.
Factors Necessary While Choosing a Dial Thermometer:
Each dial thermometer offers robust performance, meeting all the user requirements. However, it is crucial to determine the essential parameters before buying them and include:
Determining the accuracy is the foremost parameter when selecting thermometers. They fulfill a 1% accuracy tolerance range over the full scale; otherwise, they need to be adjusted for proper calibration.
It is recommended to properly check the scale ranges for each dial thermometer, depending on the applications. For instance, bimetal thermometers come in scales with temperature ranges of -70 °C to +600 °C.
The users should consider the ambient temperatures of their specified thermometers. They operate at different temperature ranges.
When choosing a dial thermometer, it is essential to consider the operating environment. These parameters include temperature, shock, sanitization, vibration, weather, and humidity.
Where Are Dial Thermometers Used?
Depending on the thermometer types, they are mostly found in several applications, such as:
- Mechanical engineering
- Plant engineering
- Meteorological
- Chemical industry
- Process technology
- Transmission construction
- HVAC
- Agriculture
- Food processing.
