Extech Instruments 42280 User Manual
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Extech Instruments 42280 User Manual

Temperature and humidity datalogger
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User Guide
Temperature and Humidity Datalogger
Model 42280

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Summary of Contents for Extech Instruments 42280

  • Page 1 User Guide Temperature and Humidity Datalogger Model 42280...

  • Page 2: Material List

    Congratulations on your purchase of the Extech 42280 Thermometer and Relative Humidity Datalogger. The 42280 is a wall-mount, tripod mount, or desktop indoor air quality monitor with an internal memory capable of storing 16,000 readings (8000 temperature readings and 8000 relative humidity readings) that can later be transferred to PC using the USB interface.
  • Page 3 15. Tripod mount jack Notes: The battery compartment is located on rear of instrument. Desktop stand footers are not shown in diagram. LCD Display Description Temperature Display Dew Point icon Datalogger icon Date and Time Humidity Display Y-M-D Low battery icon H:M:S 42280-EU-EN-V4.4-12/11...

  • Page 4: Operation

    (detailed later in this user guide). Datalogger Basics The Model 42280 has a built-in Datalogger that can store up to 8000 temperature and 8000 humidity readings. Readings can be stored in the meter and transferred at a later time to a PC. The meter can also display real-time readings on a connected PC;...

  • Page 5: Manual Programming

    Manual Programming The Model 42280 has several programming modes (P1, P2, P3, P4, P5, and P6). These parameters must be programmed before the Datalogger or the Alarm can be used. List of Programming Modes P1 - Number of samples to record (1, 2, 4, 8, 12, or 16 x 1000; 1=1000, 2=2000, etc.) P2 - Datalogging Start Methods (Immediate, Keypad, Scheduled, and Repeat modes) P3 –...
  • Page 6 SCh (Scheduled Start): Logging begins at a preset date and time 5. Press the SET button to save the setting 6. Use the arrow buttons to select another programming mode or press MODE to exit the programming mode. 42280-EU-EN-V4.4-12/11...
  • Page 7 15. Press the SET button again to store the settings 16. Press the MODE button to back out to the top level of this menu. 17. Use the arrow buttons to select another programming mode or press MODE to exit the programming mode. 42280-EU-EN-V4.4-12/11...
  • Page 8 12. Press the MODE button to back out to the top level of this menu. 13. Use the arrow buttons to select another programming mode or press MODE to exit the programming mode. Note: The AC Adaptor must be used for the audible alarm to sound 42280-EU-EN-V4.4-12/11...
  • Page 9 15. Press SET again to stores the settings 16. Press the MODE button to back out to the top level of this menu. 17. Use the arrow buttons to select another programming mode or press MODE to exit the programming mode. 42280-EU-EN-V4.4-12/11...

  • Page 10: Data Logging

    Datalogging Starting a Datalogging session The 42280 can automatically store up to 16,000 readings (8000 temperature and 8000 humidity) for later transfer to PC. Program the controller, as discussed earlier, before Datalogging. If the Datalogger has not been configured at this point, configure as necessary. If programming is complete, continue with the next section.
  • Page 11 NOTE: The Software’s HELP utility provides in-depth software and downloading instructions, which is beyond the scope of this user guide; please refer to the HELP utility in the supplied software program for detailed guidelines and instructions. 42280-EU-EN-V4.4-12/11...

  • Page 12: Humidity Calibration

    The user can exit the calibration without finishing by pressing the START-STOP button for 2 seconds (before reaching step 6 above). • For best accuracy, perform the calibration at room temperature. • Calibration Reference bottles are available optionally through Extech Instruments distributors 42280-EU-EN-V4.4-12/11...

  • Page 13: Specifications

    Humidity: +/-3% from 10 to 90% (+/-5% outside of this range) Datalogger memory 16,000 total (8000 temperature and 8000 humidity readings) Over range indication Error code appears on the LCD Low battery indication Battery symbol appears on the LCD Power supply Four (4) 1.5v ‘AA’ batteries or 9V adaptor 42280-EU-EN-V4.4-12/11...

  • Page 14: Troubleshooting

    / accumulators are sold! Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle © 2011 Extech Instruments Corporation (a FLIR company) www.extech.com more info for...

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