4. Thermo FH40 Handheld Survey Meter
Available from LAURUS Systems Inc.
The FH40 G family of advanced digital survey meters is designed for many different radiation protection applications. The FH40 G is rugged, lightweight, fits snugly in the palm of the hand and is easy to operate with large keys that enable users wearing gloves. Internal diagnostics ensure proper functioning of the detector(s) and the electronics. If the battery voltage falls below a pre-defined value, an icon on the display flashes giving the user 20 hours of remaining use before replacing the batteries.
Alarm values are established for dose rate and integrated dose. When an alarm value is exceeded, an audible alarm is emitted. In parallel to the measured value display, an audible speaker can be activated to signal detector pulses. The FH40 G models are designed to record up to 256 data points containing measurement number, date, time and dose rate at the internal detector and external detector, status, and barcode information.
Depending on the application, there are various probes available for the FH40 G. The probes are identified automatically by the Radiameter. The calibration data are stored in an EEPROM. Thus, one specific probe can be connected to different FH40 G types. All external probes are connected via a detector cable, with the exception of the Teleprobe FH40 TG.