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TEL-TRU Thermometers

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TEL-TRU Pressure guage
Product For
 Thermometers Model:

  • 3", 4" and 5" Adjustable Angle Industrial Thermometers

  • 3", 4" and 5" Back Connected Industrial Thermometers

  • 3", 4" and 5" Bottom Connected Industrial Thermometers

  • 13⁄4" and 2" Back Connected Industrial Thermometers

  • 13⁄4", 2" and 3" Laboratory Testing and General Purpose Thermometers

  • 1" and 13⁄8" Testing and Spot Checking Thermometers

 OPTIONS AND ACCESSORIES:

  • Connections, Fittings, Lenses, Dials, Tagging and Mounting Flanges

  • Thermowell Adapter kit

 THERMOWELLS:

  • Threaded, Flanged,Welded, Sanitary and Van Stone


QUALITY AND PERFORMANCE FEATURES:

 

CONSIDERATIONS WHEN SELECTING BIMETAL THERMOMETERS:
MATERIALS
• Application? Continuous process flow, static tank,or laboratory testing etc.
• Environmental conditions? Ambient temperature, humidity,or corrosive atmosphere (salt spray etc.)
• Process conditions? Pressure, temperature, media viscosity,rate of flow, and possible vibration
• Wetted material of thermometer compatible withmeasured medium?
• Window material?
MODEL TYPE
• Dial size?
• Location of fitting connection for maximum readability when thermometer is installed in system– Back, adjustable
angle, bottom, top, right side or left side connection location?
• Fitting thread size and type?
STEM
• Pipe size or depth of tank?
• Immersion length required?
• Stem length?
• Stem diameter?
TEMPERATURE RANGE
• Operating temperature of process? High and low
• Overall temperature range required? High and low
• Over-Range possibilities? Minimum and maximum
• Accuracy required?
• External reset required?
• Scale - °F, °C or dual?
• Bimetal thermometers should not be used continuously over 800°F (450°C)
OPTIONS AND ACCESSORIES
• Thermowell?
• Silicone filling?
• Minimum and/or maximum indicating pointers?
• Custom or special dial marking or colors?
• Sliding compression fittings– male or female?
• Thread size adapters?
• Project tagging?
SAFETY AND APPLICATION CONSIDERATIONS:
• Use of a thermowell is recommended for pressure, corrosive fluid or high velocity applications.
• Use of a thermowell allows removal of thermometer for calibration check or interchange of instruments without shutting down the process.
• Install thermometers in locations that minimize injury or damage in the event of an accidental breach of stem/thermowell combination.
• Cases may be silicone filled for additional dampening of extreme vibration, or to assure consistent performance in low process temperature/high
environmental humidity applications.
• Silicone filled thermometers are recommended for use with process temperatures ranging from a minimum of -50°F (-45°C) to a maximum of 500°F (260°C).
• Use of silicone fill should be avoided where strong oxidizing agents such as oxygen, chlorine, nitric acid, and hydrogen peroxide are present.
• Bimetal thermometers should not be exposed continuously to process temperatures over 800° F (425° C) to avoid damaging the bimetal element.
• For 21⁄2" stem industrial thermometers:
  - The connection nut should be immersed or in contact with the process media for most accurate reading.
  - When used with limited space thermowells some reading error may be noticed depending on process and ambient temperatures.
• Operating conditions – It is recommended the temperature of the thermometer head not exceed 300°F
• Maximum recommended temperature limit for optional lens materials:
- Acrylic plastic

• 180°F (80°C)
• Fair chemical resistance but limited temperature limit

- Shatterproof plastic

• 270°F (130°C)
• Higher temperature limit than acrylic but poor chemical resistance

- Laminated safety glass

• 200°F (90°C)
• High corrosion resistance
• Plastic laminate between two pieces of glass will hold fragments in place if broken but laminate will start to deteriorate above 200°F

- Tempered glass

• Improved to withstand a broad range of temperature changes
• More impact resistant than regular glass





  • 3", 4" and 5" Adjustable Angle Industrial Thermometers


  • 3", 4" and 5" Back Connected Industrial Thermometers


 
  • 3", 4" and 5" Bottom Connected Industrial Thermometers


 
  • 13⁄4" and 2" Back Connected Industrial Thermometers


 
  • 13⁄4", 2" and 3" Laboratory Testing and General Purpose Thermometers


 
  • 1" and 13⁄8" Testing and Spot Checking Thermometers

 

 

 OPTIONS AND ACCESSORIES:

  • Connections, Fittings, Lenses, Dials, Tagging and Mounting Flanges

  • Thermowell Adapter kit

 

 

 THERMOWELLS:

  • Threaded, Flanged,Welded, Sanitary and Van Stone


 
 
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