Digi-Tru®

The Digi-Tru® ND3, SD3, RD3, and RD4 digital thermometers feature a digital sensor for high accuracy, and are designed to deliver industry-leading value. The new Digi-Tru line is rugged and dependable for use in industrial or sanitary applications, and is available in a wide range of configurations to meet customer needs. All models are NIST traceable and include a lifetime battery that lasts a minimum of eight years. *

In addition, the SD3 meets 3-A Sanitary Standard 74-07 requirements for sensors and sensor fittings and connectors used in milk and milk products.

The Digi-Tru Series of 3" and 4" dial digital thermometers is designed with a variety of temperature applications in mind. The highly accurate and reliable digital sensor provides precise temperature readings at ultra-low power consumption.  All models feature a stainless steel case with a back-connect, bottom-connect, adjustable-angle, or remote mount configuration, an easy-to-read 0.4" (10mm) tall display, and various industrial and sanitary connection options.

Digi-Tru digital thermometers are calibrated and tested with instrumentation fully NIST traceable. A statement of accuracy and NIST traceability can be supplied for a small additional cost. All models come standard with a two-year warranty from date of shipment.

  • Digi-Tru models meet FDA Rule 21 CFR 113.40 requirements for temperature indicators used in retorts, and the requirements of the Pasteurized Milk Ordinance for dairy applications.
  • All thermometers are calibrated and tested with instrumentation fully NIST traceable.
  • Digi-Tru thermometers are backed by a two-year warranty from date of shipment.
* Battery life expectancy is eight years at normal room temperature.
Configuration Choices:
  • Industrial and Sanitary connections
  • Various stem diameters and lengths up to 24"
  • Color dials include white (standard), blue, red
  • Custom options available upon request
Display:
  • NIST traceable factory calibration
  • High-visibility 4 digit, 0.4" (10mm) tall
  • Glass (standard) or polycarbonate lens
  • Eight-year battery life
  • Low battery indicator
Probe:
  • Connection fittings:
    • ½" NPT – standard
    • Available options:
      • ½" NPT Union
      • ½" BSPT
      • Plain bushing
      • Tri-Clover 3-A sanitary flanges - sizes 3⁄4" to 4"
      • ½" NPT sliding compression fitting
Housing:
  • 3" (77mm) 304SS hermetically sealed case
    • Back connected
    • Bottom connected
    • Adjustable angle
    • Remote mount with U-clamp fitting
  • 4" (102mm) 304SS hermetically sealed case
Environmental:
  • IP67 (direct mount models)
Other:
  • Weight approximately 1 lb, depending on connection and stem length
  • Serial number on each unit for identification
  • Warranty 2 years from shipment
  • Certificate of Calibration available, traceable to NIST
Display:
  • Accuracy
    • ±0.1 °F/C (maximum) from -4°F to 122°F (-20°C to 50°C)
      ±0.2 °F/C (maximum) from -40°F to 212°F (-40°C to 100°C)
      ±0.3 °F/C (maximum) from -67°F to 257°F (-55°C to 125°C)
      ±0.4 °F/C (maximum) from -67°F to 302°F (-55°C to 150°C)
  • Resolution 0.1°F or C
  • Sample rate 1 sec.
Probe:
  • High-precision digital temperature sensor
  • 304SS (standard) or 316SS
  • Stems 2-½" to 24" (6.5cm to 61cm) x 0.25" (.64cm) diameter
  • Operating temperature range -67°F to 302°F (-55°C to 150°C)
Environmental:
  • Ambient temperature range 20°F to 120°F (-7°C to 49°C)

Thank you for considering Tel-Tru's Digi-Tel thermometers for your temperature measurement needs! Please take a few moments to carefully review the Digi-Tru Thermometer Instructions, which cover the installation, care, and usage of your Digi-Tru thermometer, plus important safety information.

  • Direct Mount models ND3 and SD3
  • Remote Mount models RD3 and RD4
  • Additional Literature – See our Buyer's Guide for information on other Tel-Tru products and accessories.
    Markets/Applications:
    • Food and Beverage
    • Oil and Gas
    • Pharmaceutical/Biotech
    • Petrochemical
    • Water/Wastewater
    • Processing
    • HVAC
    • Equipment Skids
    • General Industrial

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