Digital wattmeter offers sensitive current ranges

The new WT200 from Yokogawa is a high-performance digital wattmeter with very sensitive current ranges, ideally suited to the measurement of standby power levels in consumer electronics products

The new WT200 from Yokogawa is a high-performance digital wattmeter with very sensitive current ranges, making it ideally suited to the measurement of standby power levels in consumer electronics products.

The vast number of appliances worldwide operating under standby conditions consumes considerable amounts of energy, and regulations for energy conservation that specify standby power levels are increasingly being adopted by national and international authorities.

The WT200 enables designers of consumer appliances and office equipment to make accurate evaluation of standby power as an aid to minimising these power levels and optimising energy efficiency.

The new instrument will measure current ranges down to 5 mA and power levels down to 75 mW.

It features a special integration function that enables it to measure power consumption throughout the whole operating cycle of the equipment under test, allowing the average power per cycle to be determined.

The very wide dynamic range of the WT200 means that it can provide accurate measurements during periods of both activity and inactivity.

Input ranges cover voltages from 15 V to 600 V and currents from 5 mA to 20 A, and accuracy is 0.2% of reading.

The WT200 also incorporates a harmonic analysis function that allows testing for compliance with new IEC standards being introduced in 2001.

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