EDNE February 2013 - (Page 8)
INNOVATIONS & INNOVATORS
Digital supply-power meters offer precision over wide range
ntroducing its latest range of digi- a wide measurement range from standby age, current, power, harmonic content, and
tal power meters – meters, that is, for power levels of a few milliamperes up to total harmonic distortion (available on a
measurement of electric power sup- the 40 A currents used in induction cook- 100-msec cycle) simultaneously.
plied to equipment – Yokogawa cites the ers, and the units have flexibility to enThe guaranteed accuracy of the
many studies that estimate that a signifi- able users to target different technical new power meters is underpinned by
cant fraction of total electrical power gen- and commercial applications. You can in- Yokogawa’s own European standards laberated is used only to run standby func- tegrate the power meters into laboratory oratory at its European headquarters in
tions. And, in the face of increasingly strin- test benches or automated test set-ups on The Netherlands. This facility, the compagent regulatory frameworks to limit that production lines. USB and GPIB or RS232 ny says, is the only industrial (i.e. non-govstandby power, how the engineering com- is fitted as standard, and Ethernet is avail- ernment or national) organisation to offer
munity requires more accurate instruments able as an option.
traceable power calibration, to national
to develop products that
and international stancan be guaranteed to
dards, at frequencies up
meet those standards.
to 100 kHz: a requireThe new WT300 sement for higher harmonries of digital power meic measurements speciters are the fifth generafied in quality standards
tion of Yokogawa’s comsuch as ISO9000.
pact digital power meter
Other features of the
for measuring the power
new instruments inconsumption of electriclude a fourth, selectcal equipment. As well
able, parameter display,
as the low-power, standa bandwidth of DC and
by – sub-1W – accu0.5 Hz to 100 kHz (up
racy aspect, Yokogawa
to 20 kHz for 40A on
positions the new sethe WT310HC), plus
ries as providing accuan auto-range function
racy and speed of re- The WT300 series is Yokogawa’s fifth generation of power meters for the mainsfor measurement and
sponse over their en- supply-measurement function.
integration. Software is
tire range, so that the
also available for testsame level of detail is available when
In addition to standard power mea- ing equipment compliance to industry enyou are measuring the current drawn surements, the new meters offer a ergy-saving standards such as IEC62301
by an induction cooker at tens of amps. wide range of harmonic measurement Ed2.0 and IEC62018 for standby mode
The instruments also feature uprated capabilities, including the ability to carry equipment or for dealing with wavespecifications in terms of their communi- out simultaneous measurement of normal forms having a crest factor of 5 or more.
cations interfaces, and in characterising power parameters such as RMS, mean or Pricing is from €2,500 to 7,500.
power waveform harmonic content.
DC power along with measurement of harBasic accuracy is of 0.1% of reading; monics up to the 50th order. As a result, —by Graham Prophet
accuracy is guaranteed over the entire overall measurement times are reduced. Yokogawa,
measurement range (from 1% to 130%), You can obtain all measured values – volt- www.tmi.yokogawa.com
8 EDN EUROPE | February 2013
Table of Contents for the Digital Edition of EDNE February 2013
Mesago SMT 2013
Test & Measurement World
Rohde & Schwarz
Mesago PCIM 2013
Mechatronics in Design
Hot technologies: trends to watch in 2013
Hot 100 products of 2012
Add LED intelligence to improve light quality, efficiency, and cost
Tales from the Cube
EDNE February 2013