Omega HHM-NCV40, Руководство пользователя, Страница: 4 / 24

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Unlike the typical NCV detector, the HHM-NCV40 has adjustable
sensitivity—a feature that makes it possible to determine
which wire in a bundle is the “hot” wire. This application calls
for turning down the sensitivity in stages after the HHM-NCV40
senses voltage. As you reduce sensitivity, at some stage only
the energized wire will produce a field strong enough to
activate the audible and visual alarms from a short distance.
In this way, the VS4000’s adjustable sensitivity takes the
guesswork out of identifying the “hot” wire of a bundle.
The HHM-NCV40 also has a wider detection range (5 to
1000VAC) than the typical NCV unit. The ability to detect the
presence of 12VAC in non-contact fashion is particularly useful
during troubleshooting of hardwired process plant and
industrial automation systems and equipment such as gas and
water valves, fans, lights, relays, inverters, solenoids and horns.
12VAC is also commonly used to power hardwired
commercial and residential building doorbells/buzzers and
thermostats. Separately, HHM-NCV40’s ability to detect 480V
using its lowest sensitivity setting makes troubleshooting and
installing generators and fluorescent lighting ballasts easier,
faster and safer.
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