Digi-Sense 20250-20 User Manual

Digi-Sense 20250-20 User Manual

Professional thermocouple thermometer with four type k inputs, data logging, and optional infrared wand

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User Manual
Professional Thermocouple Thermometer
with Four Type K Inputs, Data Logging,
and Optional Infrared Wand
with NIST-Traceable Calibration
Model 20250-20
Enter
REC
DIF
THE STANDARD IN PRECISION MEASUREMENT

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Summary of Contents for Digi-Sense 20250-20

  • Page 1 User Manual Professional Thermocouple Thermometer with Four Type K Inputs, Data Logging, and Optional Infrared Wand with NIST-Traceable Calibration Model 20250-20 Enter THE STANDARD IN PRECISION MEASUREMENT...
  • Page 2: Key Features

    Introduction The Digi-Sense Professional Thermocouple Thermometer (Model 20250-20) with Four Type K Inputs, Data Logging, and Optional Infrared Wand offers fast response and high accuracy. This heavy-duty meter works with up to four type K thermocouples and one optional infrared probe*. Advanced features include data logging, USB interface, relative time clock, offset compensation, tempera- ture differential, data Hold, Max/Min/Avg readings, and automatic power-off.
  • Page 3: Meter Description

    Meter Description 1. Thermocouple type K input (T1, T2, T3, T4) 2. LCD 3. Enter button 4. Up  button 5. Rec/ button 6. °C/°F/K button 7. HOLD button 8. DIF/T1–T2–T3–T4 button 9. Power on/off button 10. MAX/MIN button 11. Setup / Backlight button 12.
  • Page 4: Display Layout

    Display Layout 1. Primary temperature display 2. Tertiary display (IR temperature or recording time) 3. Min:Sec or Hour:Min display 4. T1 or T3 temperature display 5. Thermocouple type icon 6. Infrared IR TEMP icon (requires Optional IR wand sku number 20250-24) 7.
  • Page 5: Setup And Operation

    Setup and Operation 1. Press Power on/off button to turn the unit on. The value immediately shown is the number of data logging sample points remaining (from 10,000 to 0). After one second, the display will then switch to the temperature measurement reading mode.
  • Page 6: Changing Setup Options

    Changing Setup Options Use the Setup mode to change offset, sample rate, time, clear data logging memory, and sleep mode settings. The thermometer stores the settings in its memory. Option Menu item Settings Offset T1, T2, IR, T3, T4 T1, T2, IR, T3, or T4 offset Sample rate Sampling of recording Time setting...
  • Page 7 Sample Rate Function The secondary display shows the sample rate of the temperature data recording. When the meter is powered on, the default sample rate is 1 second. The secondary display shows “00 01” in minutes, then seconds (Fig. 2). 1.
  • Page 8 Clear Memory Operation (Continued) 3. Press Enter button and “SURE No” will appear on the screen. 4. Press the  or Rec/ button until the display shows “SURE YES”, indicating the memory will be cleared. 5. Press Enter button to select the “SURE YES” setting and clear the memory.
  • Page 9 Viewing the MAX, MIN, and AVG Readings 1. Press MAX/MIN button to step through the maximum (MAX), minimum (MIN), and average (AVG) readings. The elapsed time since entering MAX/ MIN/AVG mode, or the time at which the minimum or maximum occurred, appears on the display.
  • Page 10: Software Installation

    Recording/Data Logging Operation (Software) continued 6. In manual record mode, press and hold Rec/ button on the meter for three seconds until REC icon is indicated on the screen, indicating that recording function has been activated. Upon completion of desired data logging of measurements, press and hold Rec/...
  • Page 11: Specifications

    Specifications Range Temperature, external type K –328 to 2501°F (–200 to 1372°C) thermocouple Resolution Temperature display 0.1 (<1000) or 1 (≥1000) Accuracy ±[0.15% reading + 1.8°F (1°C)] above –148°F (–100°C) T1, T2, T3, T4 ±[0.5% reading + 3.6°F (2°C)] below –148°F (–100°C) T1–T2, T3–T4 ±[0.5% reading + 1.8°F (1°C)] ±[2.0% reading + 3.6°F (2°C)] above 14°F (–10°C)
  • Page 12 Replace the 9 V battery in the rear battery compartment by remov- ing the cover. Ensure that the cover is securely refastened when finished. It is recommended that Digi-Sense products are calibrated annually to ensure proper function and accurate measurements; however, your quality system or regulatory body may require more frequent calibrations.

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