The Extech MultiMaster Precision Multimeter is a high accuracy instrument with full range functions to perform electrical testing.
The Extech MultiMaster Precisions Multimeter features a 50,000 count backlit LCD display with bargraph. The filtered frequency function with adjustable trigger levels measures variable speed motor drive and high voltage applications. The special true RMS combination AC + DC function measures rectified AC (non-symmetrical) voltage and current waveforms. AC/DC current is displayed up to 10A with a 0.01μA resolution. 4-20mA is displayed as 0-100% for process current measurements. The peak function captures transient pulses, and an audible and visible test lead alerts users of a miconnection.
The optional software is used to further analyze data points on a PC using the optically isolated cable. Additional meter features includes max/min recording with autoraging, capacitance, frequency, resistance, continuity, duty cycle, and diode tests, dBm measurements with 20 selectable impedances, automatic power off, and relative and hold functions. Model MM560A measures up to 20kHz true RMS ACV bandwidth, and has a 600V input protection on all functions (1000V on voltage). Model MM570A measures up to 100kHz true RMS ACV bandwidth, and has a 1000V input protection on all functions. The type K thermocouple probe measures T1, T2 and T1-T2 dual Type K input temperature display in ˚F or ˚C.
|Image||Part #||Product Description||Price||Stock||Order|
|MM560A||MultiMaster precision multimeter, 20kHz True RMS ACV bandwidth||
|Usually ships in 1-2 weeks|
|MM560A-NIST||MultiMaster precision multimeter, 20kHz true RMS ACV bandwidth, NIST traceable||
Usually ships in 1-2 weeks
For the past decade or so, Dr. Bernard Laval , a civil engineer with the University of Northern BC in Canada, has been researching Quesnel Lake , a large, deep lake with unusual water dynamics. This allowed him an unusually high level of insight into much of what makes the lake tick—and when Mount Polley Mine (MPM) experienced a breach in 2014, causing materials to be deposited into Quesnel Lake, he already had a sense of what the lake's waters looked like.
“Our work was inspired by a desire to improve holistic understanding of lake function to help with fisheries management by BC Ministry of Environment (BC MOE) and Fisheries and Ocean Canada (DFO),” explains Dr. Laval.Read More
Unique among the 29 National Estuarine Research Reserves (NERRS), Narragansett Bay National Estuarine Research Reserve (NBNERR ) is made up of four islands: Prudence, Patience, Hope and Dyer. Protecting about 4,400 acres of land and water, NBNERR is a great place to see a variety of coastal habitats. There are upland maritime forests, coastal pine barrens, sandy beaches, cobble shorelines, salt marshes and open grasslands. NBNERR also has excellent hiking, fishing, clamming and bird watching. “If you want to see us, though, you’ll need to hop on a ferry,” says Bob Stankelis , NBNERR Reserve Manager. “Or you’ll have to take a boat. We’re not that easy to get to. But to be honest, that’s one of the big things residents here like about it: its remoteness.Read More
Since the 1980s, scientists from the Vermont Department of Environmental Conservation (VT DEC) have been sampling water from acid-impaired ponds and lakes and tracking data related to acidity. The line of inquiry began in response to concerns about acid rain, but DEC scientists now find that the long-term monitoring is not only proving the efficacy of the Clean Air Act but also improving local water quality.
Guarding the environment in Vermont
Rebecca Harvey is a VT DEC scientist, and monitoring the state's waterways for acidity and other problems falls in part to her. Dr. Harvey corresponded with EM about this work.Read More