The moving iron panel meters, DE 48/72/96/144 housed in cases made of molded polycarbonate are suitable for the measurement of AC currents for the frequency range of 15 to 400 Hz and voltages in the frequency range of 15 to 100Hz. Moving iron meters indicate RMS values practically independent of waveform even of high harmonics. An error of indication may occur for extreme waveforms (e.g. phase gating controls) & for frequencies above 100KHz.
These meters offer several advantages in switchboards and generating set panels. A number of meters can be mounted in a panel cutout mosaic mounting. For CT-operated ammeters, dials can be fitted based on CT ratio. Glass and bezel can easily be replaced.
The Jewell VISTA range of analog panel meters offers accurate measurement and indication of most electrical and electronic parameters in the industry as per industrial standard case size. The range offers AC and DC ammeters, voltmeters, and frequency meters utilizing a high torque pivot and jewel
movement. AC moving iron meters also provided 1.5% high accuracy true RMS measurement.
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