Frequency Range: 30 Hz – 2000 Hz The HI-3604 ELF Survey Meter is designed to evaluate both electric and magnetic fields associated with 50/60Hz power lines, line-powered equipment and appliances. The HI-3604 Low Frequency Survey Meter provides the engineer, industrial hygienist and health and safety professional with a sophisticated tool for accurate investigation of power frequency environments. The custom LCD display indicates electric fields in volts/meter and magnetic fields in gauss, tesla, or amperes/meter units. A bar-graph analogue indicator aids in quickly locating maximum field orientations and “hot spots”. Full auto-ranging and a sealed membrane switch control panel make the HI-3604 ELF Survey probe ideal for field surveys. The on-board data logging feature allows up to 112 readings to be saved in internal memory storage. Electrical Specifications