The Extech 400A is an integrated non-contact voltage detector that quickly checks for the presence of live wires before testing.
The Extech 400A features a built-in non-contact voltage detector with LED alert on a 4000 count, backlit LCD display. It includes a 1.2" jaw size for conductors up to 350 MCM, as well as multimeter functions such as AC/DC voltage, resistance, capacitance, frequency, temperature, duty cycle, diode, and continuity.
|Image||Part #||Product Description||Price||Stock||Order|
|MA410T||AC true RMS clamp meter + NCV||
|Drop ships from manufacturer|
|MA410T-NIST||AC true RMS clamp meter + NCV, includes NIST calibration certificate||
Drop ships from manufacturer
Researchers from the University of California at Berkeley are figuring out when it comes to forest fires, sometimes you’ve just got to let it burn. Gabrielle Boisramé, a hydrologist with the university, and a team of fellow researchers wanted to figure out if the standard practice of fire suppression would have any impact on the flow of water through the forest. To do so, they used the Illilouette Creek basin of Yosemite National Park as the setting for a natural experiment. In that specific plot, when lightning strikes on dry, hot days and starts a fire, land managers let it burn out on its own, rather than suppress the blaze. Park employees adopted this practice in the area in the 1970s and have stuck with it since then.Read More
A complex series of locks and dams up and down the Ohio River enable interstate commerce, travel and recreation by maintaining a usable pathway for watercraft, but come with the inevitable byproducts of disrupting the river’s natural systems. To combat this, the U.S. Army Corps of Engineers uses a complex monitoring and response technology designed to minimize the negative impacts of dredging on the river ecosystem. Steven Foster, a limnologist with the Corps Water Quality Team, works at the Robert C. Byrd Lock and Dam in Gallipolis Ferry, West Virginia. He said one key area he focuses on is the welfare of mussels in the river. River dredging can smother mussel beds, so Foster and the team of engineers monitor the beds to ensure their safety.Read More
While the scientific community has formed its consensus on how ice sheets are shrinking in and around Greenland, some researchers are tracking what happens to the meltwater as it drains into the ocean each summer. Their study, published in Nature Geoscience by an interdisciplinary team of biologists, oceanographers and hydrologists, used computer models to simulate the meltwater to see where currents take it and what effect it could have on the ocean. Renato Castelao, one of the researchers and an associate professor of marine science for the University of Georgia, said one of the biggest discoveries of the study was the surprising final destinations of the ice sheets as they melt into the ocean each summer.Read More