1551A-20-DL Fluke Thermometer

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  • Intrinsically safe (ATEX and IECEx compliant)
  • Stainless steel probe and digital readout are fixed together and calibrated as a system
  • Accuracy of ±0.05°C (±0.09°F) over full range
  • Large backlit LCD display rotates 90° making it easy to read from any angle
  • User-configurable temperature trend/stability indicator lets you know when your temperature is stable enough to record an accurate measurement
  • Display temperature in °C or °F
  • User-selectable resolution (0.1, 0.01, 0.001)
  • Max/Min/Trend/Up key allows you to see the maximum or minimum temperature since the most recent power up
  • Simple three-point calibration function allows you to easily and accurately calibrate the thermometer
  • Requires a minimum immersion depth of only 7cm (2.8"), with no appreciable effect on the measured temperature due to heat loss through stem conduction
  • Data logging to internal memory of up to 10,000 time-stamped measurements is optionally available
  • 300-hour battery life
  • Percent battery-life and low-battery indicator
  • NVLAP-accredited, NIST-traceable calibration included


  • Temperature Range: -50 °C to 160 °C (-58 °F to 320 °F)
  • Accuracy: ±0.05°C (±0.09°F)
  • Probe Temperature Coefficient: 0.00385 Ω/Ω/°C nominal
  • Response Time: 4.8mm (3/16") diameter probe: 14 sec
  • Probe Hysteresis: ±0.01°C
  • Temperature Resolution: Selectable: 0.1, 0.01, 0.001
  • Sample Rate Selectable: 0.5, 1, 2 seconds
  • Data Logging: Up to 10,000 time-stamped readings stored to internal memory
  • Logging Intervals: 2, 5, 10, 30, or 60 seconds; 2, 5, 10, 30, or 60 minutes
  • Damping: Moving average of the most recent 2 to 10 readings (ON/OFF, 2, 5, 10)
  • Communications: RS-232 stereo jack

An intrinsically-safe, battery-operated, stick reference thermometer with large backlit LCD display that rotates up to 90°. Measures from -50 to 160°C with optional data logging of up to 10,000 readings.

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