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VOLUME -25 NUMBER 3
Publication Date: 03/1/2010
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March 2010 Issue
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Extech Intros Industrial Wireless Datalogging DMM
Industrial DMM uses Bluetooth.
Waltham, MA — Extech Instruments has introduced its EX540 wireless digital multimeter and datalogger, which has been nominated for a 2010 Best in Test award.
The digital multimeter is the first handheld unit to offer wireless data streaming to a laptop or PC for datalogging or real-time monitoring. The new DMM is part of the EX500 series of industrial multimeters, considered the "toughbook" of multimeters. The company's ruggedized, waterproof design can withstand a 6-foot drop, making it an excellent starting point for a go-anywhere DMM. The innovative new meter offers wireless connectivity to a laptop or PC using a USB receiver with a range comparable to Bluetooth
of 10m (33 ft). The DMM transmits real-time data for monitoring, trending and analysis — using the included software — on one of two available frequencies: 433 and 914MHz.
Now, electrical professionals can monitor and datalog readings at a safe distance from hazardous locations. In addition, it is easier to perform remote tasks such as powering up a device from a control panel that is not nearby. The new instrument permits a user to set up a laptop at a centralized location and then sequentially datalog readings throughout a site without relocating the computer. The ruggedized industrial-duty instrument is a True rms DMM that, in addition to wireless datalogging, can log up to 9,999 readings internally while reading voltage, current, resistance, capacitance, frequency with dual-range sensitivity for electrical and electronic work, duty cycle (dwell), continuity, diode testing (2.8V), and even temperature using its Type K thermistor bead probe.
Accuracy is reportedly 0.06 percent and the meter is backed by a Category IV overvoltage safety rating, protecting users even on outdoor wiring.
Several one-button statistical data functions include minimum/maximum, relative, hold, and peak hold as well as selectable auto-ranging or manual-ranging. An analog-style bargraph complements the unit's informative triple-reading display.
The DMM comes with double-molded test leads, USB wireless receiver, temperature probe, magnetic hanging strap, 9V battery and carrying case. In addition, NIST calibration is available.
Contact: Extech Instruments, 285 Bear Hill Rd., Waltham, MA 02451
781-890-7440 fax: 781-890-7864 E-mail: email@example.com Web:
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