The Model 375-9 Gamma Area Monitor is an easy-to-use system designed for monitoring pulsed radiation fields. The wall-mountable Model 375 controller is connected to a Model 45-9 Ion Chamber detector via a 6.1 m (20 ft.) cable (lengths up to 61 m [200 ft.] are also available), allowing the detector to be located in an area separate from the controller. It can be configured to display in one of three operating ranges, depending on the units selected:
(Note that the operating range must be selected at time of purchase.)
The Model 375 controller has an easily readable four-digit LED display to show the current reading; a green status light to indicate the instrument is functioning properly; backlit indicators for low alarm (yellow light), high alarm (red light), instrument failure (red light), and low battery (yellow light); and audible alarms. Both alarms are user programmable at any point within the selected operating range.
Instrument parameters, such as the calibration constant and alarm set-points, can be adjusted using the calibration controls on the front of the instrument (protected by a removable cover). Parameters are stored in non-volatile memory so they are retained even with power disconnected. A five-decade logarithmic analog output is provided via a 9-pin connector, and an Ethernet option is available for connecting the instrument to a local network. In event of power loss, a built-in battery backup provides up to 48 hours of operation.
NOTE: Since the detector is classified as a pressure vessel, users must be careful to follow shipping regulations regarding any shipment of this device.
