Temperature and Humidity Datalogger
The Extech 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 via USB to a PC using the included Windows The Extech 42280 features a triple LCD that displays Humidity, Temperature, and date (Year, Month, and Day), this monitor can be programmed from the built-in keypad, or remotely from a PC, with selectable data sampling rates (1 second to 12 hours) and user programmable audible and visual high/low alarms for both Temperature (-20 to 70 degrees C) and Humidity (0 to 100 percent RH).
Connecting the Meter to a PC A USB cable is provided with the meter. One end of the cable connects to the meter’s USB jack and the other end connects to a USB port on the PC. R
unning the supplied PC software The supplied PC software is included on the supplied CD-ROM. Insert the CD into the computer’s CD-ROM drive and follow the on-screen prompts and instructions. In the software COM PORT SETTING field, select the COM port to where the meter is connected.
Software Datalogging Parameters From the main software screen, select LOGGER SET and set the sample rate, sample points, and start mode. These are described in some detail in the separate software manual and the software HELP utility on the supplied CD-ROM. Remember to press ‘OK’ after changing a setting to ensure that the software processes the changes. The meter is now ready to record.