The FW Bell 4190 is a handheld, extremely low frequency (ELF) gauss meter designed to accurately measure magnetic fields generated by electrical equipment. It can be configured to display either gauss or tesla units and is available to rent from TechRentals.
Applications include detecting magnetic field emissions from overhead AC power lines, video display terminals, office equipment and household appliances. The 4190 maintains accuracy regardless of orientation and also includes data logging and a USB interface.
Features include: accuracy ± (1% + 1 digit) typical; frequency response 30 Hz to 2 kHz; auto range 0.1 to 1999 mG (0.01 to 199.9 µT), minimum resolution 0.1 mG/0.01 µT; and analog output sampling at 8 kSa/s.