FH 40GL Digital Survey Meter
FH 40GL Digital Survey Meter
The Model FH 40GL is a stand-alone unit with an internal proportional detector and can simultaneously function with an external detector. The Model FH 40GX only operates with an external detector. The external probes utilized with either model of FH 40G are "smart" with the calibration parameters automatically adjusting with a change of probes.

Measured values are shown via a clear, backlit LCD display. Measurements are digital with a 3 decade logarithmic analog bargraph. An intelligent rate meter algorithm (ADF mode) detects and indicates small changes in dose rate, suppressing random noise. Additional information includes alarm setting(s), audio speaker, battery voltage, external probe parameters, date and time and many user-selectable function. alarms The Model FH 40GL is a stand-alone unit with an internal proportional detector and can simultaneously function with an external detector. The Model FH 40GX only operates with an external detector. The external probes utilized with either model of FH 40G are "smart" with the calibration parameters automatically adjusting with a change of probes. Measured values are shown via a clear, backlit LCD display. Measurements are digital with a 3 decade logarithmic analog bargraph. An intelligent rate meter algorithm (ADF mode) detects and indicates small changes in dose rate, suppressing random noise. Additional information includes alarm setting(s), audio speaker, battery voltage, external probe parameters, date and time and many user-selectable functions.

The FH 40G 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, the corresponding icon on the display flashes giving the user 20 hours of remaining time before replacing the batteries. Alarm values are established for dose rate and integrated dose. When an alarm value is exceeded, a permanent signal is emitted. In parallel to the measured value display, an audible speaker can be activated to signal detector pulses.

The memory of the FH 40G 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. The stored values can be read directly from the LCD, accessed at any time and can also be processed and transferred for archiving to a PC via the FH 40G serial interface.

 
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