Digital Thermometers

Tel-Tru’s Digital Thermometers are designed to deliver reliable accurate readings in the toughest industrial environments. All models are built to order using our wide range of configurations, delivering customers exactly what they need.

Dial Thermometers

Tel-Tru designs and manufactures industrial thermometers and other quality industrial temperature instruments to improve quality and operational performance.

RTD Sensors

Tel-Tru RTD thermometer probe assemblies and RTDs with integrated compact transmitter are designed for precision temperature measurement in demanding industrial or sanitary environments. All Tel-Tru RTD thermometers use high quality platinum RTD sensors, which are known for accuracy and reliability. Tel-Tru RTDs are configurable with numerous options to satisfy the needs of a broad range of applications.

Check-Set® Thermometer Calibrators

Check-Set Calibrator Data Logger for traceable digital record keeping.

Check-Set Calibrator for fast, easy, and accurate verification.

Remo-Tel®

The Remo-Tel Industrial Temperature Monitoring System automates temperature data logging and provides a 24/7 online monitoring dashboard for industrial and commercial operations to help mitigate risk for product loss and system failure and improve productivity. The Remo-Tel System is ideal for a wide variety of processes including Refrigeration, Molding, Brewing and other extremely time sensitive temperature monitoring applications.

Thermowells

Thermowells for sanitary applications as well as thermowells that can be treated and documented to NACE standards. Thermowells are recommended for pressure, corrosive fluid, or high velocity applications. Produced using highest quality material and machined from solid bar stock for standard or high velocity requirements in a large selection of materials and coatings. Designed and manufactured to assure perfect alignment with the thermometer stem.

Glass Industrial

Our glass industrial thermometers are versatile and adjust-angle, with a lens front and red liquid fill. They are NIST calibrated and guaranteed accurate to ± one scale division.

High-Volume Custom Dials for OEMs

Tel-Tru dials are used on some of the most recognized grill brands world-wide. Add your logo, signature colors for temperature zones to create a smoker that stands out online, on the showroom floor, and in every customer photo.

Unique Custom Dials for Consumers

Give your personal grill a look that’s completely your own with a custom Tel-Tru dial thermometer created from your supplied design. It’s a simple way to turn an essential grilling tool into something personal or a unique gift for the grillmaster in your life.

New Thermometer Calibrators

For Food Safety. Because in today’s world, “close enough” isn’t good enough.

COMING SOON!

We’re thrilled to introduce our all-new Check-Set devices, designed with next-gen features to help you easily meet today’s compliance standards, including upcoming 2026 FSMA enhanced verification and traceability requirements.

  • New Technology: Features you won’t find anywhere else, including digital data logging that ensures a secure, traceable record that supports your compliance programs and protects your business.
  • Reliable & Built to Last: Built for food and beverage and industrial environments, a Check-Set Calibrator is the most cost-effective route to finally go digital for your thermometer calibration process.

Fast. Easy. Accurate. The Smarter Way to Calibrate Thermometers.
The Check-Set® Thermometer Calibrator Data Logger and the Check-Set® Thermometer Calibrator are built for today’s food safety, industrial processing, and temperature-sensitive industries—where accuracy, compliance, and traceability are non-negotiable. Unlike the old-fashioned boiling water and ice bath method, Check-Set® takes the guesswork out of calibration. It delivers lab-grade accuracy to ±0.2ºF (0.1ºC).

checkset-data-logger

When You Need Traceable Calibration Records.

This isn’t just a calibrator – it’s your compliance safety net. Manual record keeping is risky. It’s slow, prone to mistakes, and easily challenged in an audit. The Check-Set Calibrator Data Logger eliminates those vulnerabilities by recording calibration results with:

  • Time-stamped entries
  • Selected set points
  • Operator notes for documentation
A secure, traceable record that supports your compliance programs and protects your business from costly risks like:
  • Failed audits
  • Product recalls
  • Lawsuits or shutdowns
Features that Build Confidence
  • NIST-traceable Certificate of Calibration
  • 2.8” touchscreen, easy to use
  • Multiple input devices (mouse, keyboard, barcode scanner)
  • Export data to .csv file
  • Secure user profiles and permissions
  • Custom set points available
  • Recertification reminders with software updates
  • High accuracy ±0.2ºF (0.1°C) at critical control points
  • Can test most brands of thermometers including stems as short as 3.5” and with the following diameters: 0.125”, 0.150” and 0.187”
  • Portable with unique serial number
  • Standard well included (Additional wells sold separately)
  • Product Warranty
checkset-calibrator

When You Need Speed and Precision.

For operations that want a cost-effective, reliable way to verify thermometer accuracy, the Check-Set Calibrator is the perfect solution. It improves verification speed and ensures accuracy while supporting compliance. Unlike the “ice water and boiling pot” method, Check-Set delivers:

  • Repeatable accuracy every time
  • No setup mess, no guesswork
  • Consistency your auditors can trust
Everyday Benefits
  • Faster verification = higher productivity
  • Easy-to-use, portable design
  • Peace of mind with NIST certification
  • Greater confidence in your food safety and quality programs