Tel-Tru Bimetal Thermometers

At Tel-Tru we manufacture a complete line of rugged, accurate, and dependable bimetal thermometers. As the industry leader, we offer more configurations than any other manufacturer.  When selecting your bimetal thermometer, it is important to take into consideration the many options available.

General Bimetal Questions:

• What are the application details?  These may include continuous process flow, static tank, or laboratory testing.
• What are the environmental conditions, such as ambient temperature, humidity, or corrosive atmosphere (salt spray etc.)?
• What are the process conditions, such as pressure, temperature, media viscosity, rate of flow, and possible vibration?
• Will the wetted material of the process thermometer be compatible with the measured medium?
• What lens material will be best for the application?

Thermometer Model Type:

• What dial size is needed?
• Where should the fitting connection be located for maximum readability when thermometer is installed in the system (back, adjustable angle, bottom, top, right side or left side)?
• What fitting thread size and type will you need?

Bimetal Thermometer Stem:

• Is there a required immersion length to ensure accurate measurement?
• What stem length and diameter are best for your application?

Temperature Range:

• What is the overall temperature range that is required?
• What are the minimum and maximum over-range possibilities?
• What is the accuracy that is required?
• Would the thermometer require an external recalibration?
• What scale would you need (°F, °C, or dual)?
• Will the thermometer be exposed to temperatures continuously over 800°F (450°C)?

Options and Accessories

• Would you also require a thermowell?
• Is silicone filling required?
• Would a minimum and/or maximum indicating pointer be helpful in your application?
• Do you require custom or special dial markings or colors?
• Do you need any special connections or fittings?
• Do you require thread size adapters?
• Is “project tagging” an option that you would want?