Check-Set I Hot Calibrator, one temperature setpoint

Check-Set® Dry Block Probe Calibrators


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The Tel-Tru Check-Set Series of dry block calibrators provides accurate, unambiguous, and cost-effective calibration and accuracy verification for a wide range of thermometers and temperature measurement instruments.

The Check-Set series is the perfect temperature reference device for plant quality assurance, process control, food safety, instrument calibration and service, and HACCP compliance (Hazard Analysis Critical Control Points). It is easy to use, reliable, accurate, and compatible with a wide range of dial and digital thermometers, filled system bulbs, and electronic temperature sensors.

Typical users of the Tel-Tru Check-Set Calibrators are food safety professionals responsible for operating, inspecting or certifying:

  • Food preparation and food service facilities
  • Industrial canning, meat, dairy and beverage processing plants
  • Users include:
    – HACCP compliance officers
    – QA managers
    – In-plant maintenance technicians
    – Field calibration contractors
    – Local, state, and federal agency compliance officers
    • The series includes:
      • Check-Set I with one calibration setpoint
      • Check-Set II with two calibration setpoints
      • Check-Set IV with four calibration setpoints
    • High accuracy
      – Certificate of Calibration traceable to NIST
      – Built-in warning circuitry to alert user when unit exceeds set-point by 1°F
    • Fast calibration verifications
      – Simple to use
      – Easy operator training
    • Serial number assigned to each unit
    • Portable – optional padded shoulder strap available (except CS1-HOT models)
    • Rugged enclosure and electronics for reliable service
    • Quick Start Guide


  • An annual factory recertification service is available — turnaround time is one day (after receipt of unit by Tel-Tru)
  • Completion of recertification service extends the warranty for one year
  • Online orders for recertifications qualify for a $10 discount
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