New Danfoss VLT® Decentral Drive E cient, reliable and powerful
New Danfoss VLT® Decentral Drive E cient, reliable and powerful
New Danfoss VLT® Decentral Drive E cient, reliable and powerful
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TEST AND MEASUREMENT<br />
Clampmeters’ jaws reach more places<br />
Clip-on monitor shows<br />
when hearing<br />
protection is needed<br />
3M has introduced a compact clip-on<br />
device that offers a quick <strong>and</strong> easy guide to<br />
potential noise hazard levels, helping to<br />
identify areas where hearing protection<br />
may need to be worn. The 3M Noise<br />
Indicator NI-100EU incorporates a LED<br />
which flashes green when exposed to<br />
ambient noise levels below 85db(A) <strong>and</strong><br />
red for levels above 85dB(A) – the point<br />
above which hearing protective equipment<br />
must legally be worn.<br />
The noise indicator is designed to be<br />
clipped onto a shirt or jacket. Its<br />
rechargeable battery operates for up to 200<br />
hours between charges <strong>and</strong> the device<br />
incorporates an automatic turn-off system.<br />
3M 0870 80 800 60 www.3M.co.uk/ohes<br />
Fluke has introduced<br />
a family of<br />
clampmeters with<br />
thinner, smaller jaws<br />
(for easy use in<br />
crowded cabinets),<br />
large backlit<br />
displays, true-rms<br />
readings, increased<br />
resistance ranges,<br />
<strong>and</strong> overmoulded<br />
cases for easier<br />
h<strong>and</strong>ling <strong>and</strong> improved survival if dropped. Most of the new models are<br />
compatible with a new range of flexible current probes that exp<strong>and</strong> their<br />
measurement range to 2.5kA AC.<br />
The basic Fluke 373 true-rms AC clampmeter is aimed at users needing only<br />
AC current <strong>and</strong> voltage measurements up to 600A AC <strong>and</strong> 600V AC or DC. The<br />
374 <strong>and</strong> 375 models add min/max, average <strong>and</strong> inrush recording, with the 375<br />
incorporating a low-pass noise filter <strong>and</strong> the ability to measure frequencies to<br />
500Hz, as well as mV DC. The 376 model can measure currents up to 2.5kA AC<br />
<strong>and</strong> 1kA DC <strong>and</strong> can troubleshoot noisy motors <strong>and</strong> drives. It includes the new<br />
iFlex high-current current probe which has a big coil suitable for large or<br />
awkward conductors, <strong>and</strong> a 7.5mm-deep profile for reaching between tightlypacked<br />
cables. The Fluke 381 clampmeter has a detachable wireless display,<br />
allowing one technician to do jobs that previously needed two. The clamp section<br />
can be shut in a cabinet <strong>and</strong> the measurements read across a room while the<br />
controls are being operated.<br />
Fluke (UK) 0207 942 0700 www.fluke.co.uk<br />
Modular power monitor can be exp<strong>and</strong>ed<br />
Products 4 Automation has launched a<br />
low-cost, modular power monitoring<br />
system that can be programmed to collect<br />
data from external devices <strong>and</strong> to provide<br />
centralised monitoring of energy use. The<br />
system is based on P4A’s Monitouch<br />
programmable HMIs <strong>and</strong> can depict all<br />
aspects of power usage.<br />
It can monitor data from up to 31<br />
distributed nodes measuring variables such<br />
as power, voltage, current, <strong>and</strong> power<br />
factor. These values can be logged at userdefined<br />
intervals <strong>and</strong> saved in the CSV<br />
format <strong>and</strong>, if required, exported to an<br />
Excel spreadsheet. The simplest form of<br />
monitoring shows graphs of expected<br />
dem<strong>and</strong> based on current values, <strong>and</strong><br />
displays accumulated power values. A<br />
second level depicts measured values from<br />
multiple power monitors at a glance. A<br />
third level displays accumulated monthly<br />
power data as bargraphs. Installations can<br />
start with just a few nodes <strong>and</strong> be<br />
exp<strong>and</strong>ed as needed.<br />
Products4Automation 0845 077 3858<br />
www.products4automation.com<br />
<br />
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www.drives.co.uk November/December 2010 51