Frequently Asked Questions:
Digital Thermometers

Digital thermometers offer higher precision and a faster response time, often providing accuracy up to ±0.2°F (0.1°C) or better, which is crucial for HACCP/FSMA compliance. Tel-Tru’s Digital Thermometers are built to deliver reliable readings in tough industrial settings, providing the most precise data when traceability and small tolerances are non-negotiable.

The calibration frequency depends on your application’s required tolerances and regulatory compliance standards (like FSMA). For critical applications, monthly checks are common. We recommend using a high-precision tool like the Tel-Tru Check-Set Calibrator for fast, easy, and accurate verification, ensuring your digital thermometer maintains its accuracy.

Tel-Tru manufactures digital instruments with a wide range of connection options, including common sizes like 1/2″ NPT and various sanitary flange (Tri-Clamp) connections. Our products are built to order, meaning you can specify the exact connection, stem length, and configuration required for your existing process environment.

While many commercial digital units offer modest accuracy, industrial-grade models like those from Tel-Tru often exceed industry standards, with specified accuracies as fine as ±0.3°F (0.17°C) depending on the model. Always check the official product specification to ensure it meets your process tolerances.

Yes, absolutely. Industrial-grade digital thermometers are designed with durable stainless steel cases and hermetically sealed sensors to resist moisture, dust, and corrosive chemicals. Tel-Tru’s robust design ensures they deliver reliable performance even in the toughest washdown applications.

The 5th pin connects to the negative battery terminal on the board, and was added to give customers the option to ground or isolate the circuit board. To replicate the default functionality of the 4-pin version, connect the 5th pin to earth ground.