LF field analyser for safety measurements under 2016 EMF Directive

LF field analyser for safety measurements under 2016 EMF Directive

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By eeNews Europe

Manufactured by Narda Safety Test Solutions, the EHP-50F compact field analyser covers the frequency range from 1 Hz to 400 kHz, employing FFT analysis techniques to assess the low-frequency fields that occur wherever electrical energy is generated, distributed or used.

The analyser incorporates both electric and magnetic field sensors for all three spatial dimensions, allowing accurate measurements to be made irrespective of field direction. Featuring a built-in tripod bush and remote operation via optical cable, the EHP-50F can be optimally positioned without causing any distortion of the field. The instrument utilises the ‘weighted peak’ method of measurement as specified in the Directive, with results expressed simply as a percentage of the relevant limit value.

The field analyser can be controlled and the results displayed by attaching it to either a Narda NBM-550 hand-held meter or a PC running the EHP50-TS software supplied. Powered by Li-ion rechargeable batteries, the EHP-50F unit also has a stand-alone mode, which enables it to function as a data logger for 24 hours, taking measurements every 30 or 60 seconds.

The instrument is capable of measuring electric field strengths from 5 mV/m to 100 kV/m and magnetic fields from 0.3 nT to 10 mT. It has a dynamic range of more than 105 dB and can operate in ambient temperatures from -20 to 55C. 92 x 92 x 109 mm in size and weighing 550g, the field analyser is supplied as standard with a variety of accessories, including a 10m-long fibre-optic cable, EHP50-TS software, battery charger, mini tripod, tripod extension, operating manual and carrying case.

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