Fluke Biomedical 05-450 - Manual (Page 9)

1
Introduction
Model 05-450 and 05-450-2200 Digital Doorway Monitor (the Product) is
designed to monitor for nuclear radiation. Featuring a wall-mount chassis, the
Product has a four-digit LED display that is readable from 9 m (30 ft) away.
Backlit indicators warn of low radiation alarm (yellow), high radiation alarm (red),
instrument failure (red) and low battery (yellow). A green status light is a positive
indication of instrument operation.
Parameters are protected under a calibration cover. Calibration is easily
accomplished by moving the CAL dipswitch to the right, and using the
pushbuttons to increment or decrement the calibration constant, dead time
correction, and alarm point parameters. Parameters are stored in non-volatile
memory (retained even with power disconnected).
A five-decade logarithmic analog output is provided. A battery backup provides
48 hours of additional use after the primary power is removed.
Note
The detector does not contain any consumable materials.
Note
If the detector is used in a manner not intended by the manufacturer,
the detector may not function properly.
The Product has two scintillation detectors, each with internal lead shield to
reduce background radiation. Detectors may be supplied with or without
environmental enclosures. The scintillation detectors detect low levels of waste
radiation. These detectors are usually, but not always, used in scrap yards or
hospitals. Lead shields around the crystal allows specific coverage areas for
radiation detection. Figure shows the Product.