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Extech Instruments - Booth # 3928
January 2005
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Extech Instruments, a supplier of test and measurement equipment for the industrial marketplace, will showcase its new humidity and temperature chart recorder, Model RH520, at the AHR Expo. The unit may be desk- or wall-mounted and can provide simultaneous numerical and graphical displays of humidity (20- to 95-percent RH) and temperature (-20°F to 140°F). The RH520 also calculates dew point.

The unit’s multiple graphic displays are cursor-controlled and have adjustable X/Y axis resolution, which allows the user to monitor both temperature and humidity within a user specified range. The sample rate is adjustable from 0.1 sec to 200 min per sample, permitting daily, weekly, or monthly graphs. The device’s internal memory is said to record up to 49,000 readings with time and date and can be transferred to a PC for data record keeping, analysis, and printing. It also has a detachable probe that extends up to 1 m for measurements in enclosed environments.


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