RadAlert 200

REF: RA200

The RadAlert 200 offers the ultimate flexibility and monitoring capability in a  Dose Rate alarm. This unit actually includes 2 separate GM tubes for redundancy and range extension with a linear range from 1 to 30,000 mR/hr and 2 separate trigger levels with different color flashing lights.   The remote alarm contains a battery backup (8 AA NiMH) which maintains its charge via a trickle current from the 12 VDC supply.  The remote alarm is connected to the detector unit via a 100 foot cable. a flashing red LED light indicates an alarm condition, a solid green LED indicates no alarm, and a flashing yellow LED indicates a dose rate that exceeds a second level which can be adjusted by the user. An audible buzzer, which can be adjusted as well as turned on or off, sounds when the alarm is triggered. The detector unit contains a digital display indicating the alarm trigger level, as well as an independent resettable timer that can be coupled to a door switch to count when the alarm is triggered and a room door is opened. The remote unit contains  3 separate modules which show time lapsed when radiation is present, total integrated exposure, and instantaneous exposure rate allowing the user to monitor multiple aspects of a rooms exposure history. A separate button quickly load tests the batter condition, while a separate LED indicator on the remote unit indicates if the unit is in an error condition or running on battery power.

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Technical Specifications


RadAler 100 Detector Unit
Indicated use Radiation area monitoring
Internal GM detector range 0.5 mR/hr to 30,000 mR/hr (utilizes 2 separate GM Tubes)
Display 4 digit LCD display with 0.4 in (1 cm) character height Emergency counter 8 digit LED display with 0.8 in character height
Display range 000.0 to 200
Display units mR/hr
Linearity Reading within ± 10% of true value with detector connected
Response Typically 1 second from onset of radiation
Status (green light) Indicates the instrument is functioning properly & power is on
Alarm Indicated by a flashing red light and audible buzzer
Battery indicated by red LED 8 AA NiMH on trickle charge in remote station
Calibration controls Accessible from potentiometer on side of unit
Dead time < 10% at max exposure rate
Data output (current sink), and direct connection to battery and ground
Power requirements 12 VDC universal adaptor may be plugged into either main detector unit or remote alarm
Battery life 7-9 hours
Battery charger Battery is continuously trickle charged when instrument is connected to line power
Construction ABS Plastic Enclosure
Temperature range 0º to 130ºF (- 18º to 54ºC).
Size 4.4 (w) x 2.4 (d) x 8.5 in (h) (11.2 x 6.1 x 21.6 cm)
Weight 6.5 lb (2.3 kg)
Remote Station
Indicated use Remote display for RadAlert 200
Status (green light) Indicates the instrument is functioning properly & Power is on
Alarm (flashing LED) Indicates the radiation level exceeds the alarm point
high alarm flashing yellow LED indicates exposure rate has exceeded the high alarm level. Level can be set by potentiometer on top of unit. Slide switch on top of unit changes exposure rate display panel from instantaneous exposure to high alarm trigger level
Timer 8 digit LED display counts whenever alarm turns on in 1 s increment. Includes non-volatile memory and user reset button
Exposure Rate 8 digit LED displays instantaneous exposure rate
Integrated Exposure 8 digit LED display shows integrated exposure to 0.01 mR. Includes non-volatile memory user reset button
Detector fail Indicated by red LED
Audio Piezo Buzzer type with ON/OFF switch and adjustable volume
Power requirements 12 VDC universal adaptor



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