Sigma Series DE Panel Ammeters The range of DE series moving iron panel meters are designed for the measurement of AC currents. The frequency range of the current ranges from 15-400 Hz and AC voltages in the frequency range from 15-100 Hz. The ammeters are housed in moulded polycarbonate cases. Features and Benefits • Scale interchangeability
• Near linear scale
• Knife edge pointer
• Easily replaceable glass and bezel