Product/Service

Industrial Thermometers

Source: Tel-Tru Manufacturing Company, Inc.

Industrial Thermometers
Specifications of the company's Adjustable Angle and Back Connected thermometers.
Adjustable Angle Thermometers
Adjustable for viewing at any angle. Head may be turned 360° and tilted over a full 180° arc.
Model AA-375R with Calibrator 3 in. Diameter Head
Model AA-475R with Calibrator 4 in. (100 mm) Diameter Head
Model AA-575R with Calibrator 5 in. Diameter Head
  • Type 304 stainless steel
  • All welded construction
  • Easy to calibrate by inserting Allen wrench into reset opening
  • Anti-Parallax dial avoids reading errors
  • Dials printed with large black numbers and graduations on raised ring - easy to read from any angle
  • Rustproof, Dustproof, Leakproof. Hermetically sealed
  • Corrosion resistant to most chemicals
  • Connection Nut: ½ in. NPT standard. Can be supplied with Union Connection or other NPT sizes at extra charge
  • Stem Diameter: ¼ in. Standard stem lengths: 2 ½ in., 4 in., 6 in., 9 in., 12 in., 15 in., 18 in., 24 in., including threads. Available in stem lengths up to 72in. Longer and intermediate stems, and 6 mm, 8 mm, or 3/8 in. diameter stems available upon request
  • Actuated by super-sensitive bimetallic Helix Coil
  • Bimetal element dampened with silicone for minimum pointer vibration and maximum heat transfer
  • Accuracy to within ± 1% total scale range
  • Over-range protection 100% up to 250°F, 50% up to 500°F, 10% above 500°F
  • Extra-heavy glass crystal. Plastic, tempered or shatterproof glass crystal can be supplied at extra charge
  • Thermowells are recommended for pressure, corrosive fluid, or high velocity applications

Bottom Connected Thermometers (Straight Form)
Model BC-350R with Calibrator 3 in. Diameter Head
Model BC-450R with Calibrator 4 in. (100 mm) Diameter Head
Model BC-550R with Calibrator 5 in. Diameter Head

  • Type 304 stainless steel
  • All welded construction
  • Easy to calibrate by loosening 2 socket head screws above hex connecting nut
  • Anti-Parallax dial avoids reading errors
  • Dials printed with large black numbers and graduations on raised ring - easy to read from any angle
  • Rustproof, Dustproof, Leakproof. Hermetically sealed
  • Corrosion resistant to most chemicals
  • Connection Nut: ½ in. NPT standard. Can be supplied with Union Connection or other NPT sizes at extra charge
  • Stem Diameter: ¼ in.. Standard stem lengths: 2 ½ in., 4 in., 6 in., 9 in., 12 in., 15 in., 18 in., 24 in., including threads. Available in stem lengths up to 72 in. Longer and intermediate stems, and 6 mm, 8 mm, or 3/8 in. diameter stems available upon request.
  • Actuated by super-sensitive bimetallic Helix Coil
  • Bimetal element dampened with silicone for minimum pointer vibration and maximum heat transfer
  • Accuracy to within ± 1% total scale range
  • Over-range protection 100% up to 250°F, 50% up to 500°F, 10% above 500°F
  • Extra-heavy glass crystal. Plastic, tempered or shatterproof glass crystal can be supplied at extra charge
  • Stem can be located at any position around the entire circumference of the head
  • Thermowells are recommended for pressure, corrosive fluid, or high velocity applications

Back Connected Thermometers (Angle Form)
Model GT-300 or GT-300R with Calibrator 3 in. Diameter Head
Model GT-400 or GT-400R with Calibrator 4 in. (100 mm) Diameter Head
Model GT-500 or GT-500R with Calibrator 5 in. Diameter Head
Model MX-325R Maximum or Minimum with Calibrator 3 in. Diameter Head
Model MM-325R Maximum and Minimum with Calibrator 3 in. Diameter Head
Model MX-525R Maximum or Minimum with Calibrator 5 in. (100 mm) Diameter Head
Model MM-525R Maximum and Minimum with Calibrator 5 in. (100 mm) Diameter Head

  • Type 304 stainless steel
  • All welded construction
  • Models GT-300R, MX-325R, GT-500R are easy to calibrate by inserting Allen wrench into reset opening
  • Anti-Parallax dial avoids reading errors
  • Dials printed with large black numbers and graduations on raised ring - easy to read from any angle
  • Rustproof, Dustproof, Leakproof. Hermetically sealed
  • Corrosion resistant to most chemicals
  • Connection Nut: ½ in. NPT standard. Can be supplied in other NPT sizes at extra charge
  • Stem Diameter: ¼ in. Standard stem lengths: 2-1/2 in., 4 in., 6 in., 9 in., 12 in., 15 in., 18 in., 24 in., including threads. Available in stem lengths up to 72 in. Longer and intermediate stems, and 6 mm, 8 mm, or 3/8 in. diameter stems available upon request
  • Actuated by super-sensitive bimetallic Helix Coil
  • Bimetal element dampened with silicone for minimum pointer vibration and maximum heat transfer
  • Accuracy to within ± 1% total scale range. When using Max. or Min. temperature indicator, accurate to within 1-1/2% total scale range
  • Over-range protection 100% up to 250°F, 50% up to 500°F, 10% above 500°F
  • Extra-heavy glass crystal. Plastic, tempered or shatterproof glass crystal can be supplied at extra charge
  • Thermowells are recommended for pressure, corrosive fluid, or high velocity applications

Back Connected Thermometers
Model GT-200 1 ¾ in. Diameter Head
Model LN-250 2 in. Diameter Head
Model LN-250R with Calibrator 2 in. Diameter Head

  • Type 304 stainless steel
  • All welded construction
  • Model LN-250R easy to calibrate by loosening a socket head screw above hex connecting nut
  • Dials printed with large black numbers and graduations - easy to read from any angle
  • Glass lens standard - Lexan available
  • Rustproof, Dustproof, Leakproof. Hermetically sealed
  • Corrosion resistant to most chemicals
  • Model GT-200 standard 1/8 in. or ¼ in. NPT. Stem diameter: .150 in.. Standard stem lengths: 2 ½ in., 4 in., 6 in., 9 in., 12 in., 15 in., 18 in., max., including threads
  • Models LN-250 and LN-250R standard ¼ in. NPT. Stem diameter: ¼ in. Standard stem lengths: 2 ½ in., 4 in., 6 in., 9 in., 12 in., 18 in., 24in. Available in lengths up to 72 in. max., including threads
  • Actuated by super-sensitive bimetallic Helix Coil
  • Bimetal element dampened with silicone for minimum pointer vibration and maximum heat transfer
  • Accuracy to within ± 1% total scale range
  • Over-range protection 100% up to 250°F, 50% up to 500°F, 10% above 500°F

Tel-Tru Manufacturing Company, Inc., 408 St. Paul Street, Rochester, NY 14605. Tel: 716-232-1440; Fax: 716-232-3857.