Sanitary Bimetal


These heavy duty thermometers meet to 3-A Sanitary Standard Number 74-06 requirements for sensors and sensor fittings and connectors used in milk and milk products. Other applications include food and beverage processing and the pharmaceutical industry.



 Back Connected SGT-300R 3" Diameter Head
SGT-400R 4" Diameter Head
SGT-500R 5" Diameter Head
 Bottom Connected SBC-350R 3" Diameter Head
SBC-450R 4" Diameter Head
SBC-550R 5" Diameter Head
 Adjustable Angle SAA-375R 3" Diameter Head
SAA-475R 4" Diameter Head
SAA-575R 5" Diameter Head

Thermowells are not required because a Tri-Clamp® sanitary fitting is integral to the thermometers, reducing installation and instrument costs. Tel-Tru sanitary thermometers offer the utmost in critical temperature measurement, and can be customized for practically any sterile system.

  • Stem Lengths: 1-5/8, 2-1/2, 2-3/4, 4-1/2, 7-1/2, 10-1/2, 13-1/2, 16-1/2, and 22-1/2".
  • Stem Diameter: .375" standard and .250" optional.
  • Connection: 316SS Tri-Clamp fitting sizes 3/4*, 1-1/2**, 2, 3, and 4".
  • External Reset: Easy to calibrate by inserting Allen wrench into reset opening.
  • Material: 316SS wetted parts, 304SS non-contact parts.
  • Hermetic Seal: Per ASME B40.3 dustproof and leakproof.
  • Dial: True Anti-Parallax dial, easy-to-read from any angle, minimizes reading errors. Anodized aluminum with large black numbers and graduations.
  • Lens: Glass, tempered glass, safety glass, acrylic, or polycarbonate.
  • Bimetal Coil: Helix coil is silicone coated on ranges below 500°F for vibration dampening and to maximize heat transfer and response time.
  • Accuracy: ±1% full span per ASME B40.3 Grade AA.
  • Over Temperature Limits: Up to 250°F 100%; 250°F to 550°F, 50%; 550°F to 1000°F, continuous use up to 800°F, intermittent use over 800°F.
  • Pressure Tested: Up to 250 psi.
  • Surface Finish: All wetted parts, max. 32 micro-inches (.80 microns) on stem, weld radius, and underside of flange, per 3A Standard 74-03.
  • * Used on both 1/2 and 3/4" lines. ** Used on both 1 and 1-1/2" lines.