Updated:2023-10-12
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The Radiation Alert Digilert 200, with its thin end window GM tube, measures alpha, beta, gamma and x-rays. The digital display shows readings in your choice of counts per minute (CPM), counts per second (CPS), µSv/hr, mR/hr or accumulated counts. The operating range is up to 200mR/hr.
With the free, downloadable Observer USB Software, you can download and save accumulated data, set computer alarms and calibrate instruments.
The SE Digilert 200 has been discontinued. Its replacement is:SE Monitor 200
Specifications
Detector: | Halogen-quenched GM tube with thin mica end window. Mica window density 1.5 - 2.0 mg/cm2. Effective window diameter is .360 inch. Side wall is .012 inch thick. |
Operating Range: |
mR/hr - .001 (1µR) to 200 mR/hr µSv/hr - .01 to 2,000 CPM - 0 to 214,000 CPS - 0 to 3,575 Total Counts - 1 to 9,999,000 counts |
Accuracy: | Typically ± 15% from factory, ± 10% (NIST). |
Energy Sensitivity: |
1070 CPM/mR/hr referenced to Cs137 Detects alpha down to 2.5 MeV; typcial detection efficiency at 3.6 MeV is greater than 80%. Detects beta at 50 keV with typical 35% detection efficiency. Detects beat at 150 KeV with typcial 75% detection efficiency. Detects gamma and x-rays down to 10 keV typical through the window. 40 keV minimum through case. |
Anti-Saturation: | Readout will OVERRANGE in radiation fields as high as 100 times the maximum reading. |
Alerts: | Pulsating beeper sounds the alert. Adjustable alert levels are used for mR/hr / CPM and µSv/hr / CPS. Alarm will sound when in Timer Mode when set alarm threshold is reached. |
Display: | Backlit 4-digit liquid crystal display with mode indicators. Display updates every 3 seconds. |
Count Light: | Red LED flashes with each count. |
Audio Indicator: | Sounds with each count (can be switched off for silent operation) |
Outputs: | Dual miniature jack sends counts to CMOS-compatible devices including computers, data loggers and educational data collection systems. USB for use with Observer USB software for PCs. |
Temperature Range: | -10°C - 50°C (14°F - 122°F) |
Power Requirements: | One 9-Volt alkaline battery. Battery life is approximately 2,000 hours at normal background radiation levels. |
Weight: | 217 grams (7.7 oz.) |
Dimensions: | 150mm x 80mm x 31mm (6.1" x 3.1" x 1.2") |
Includes: | Carrying Case, Observer USB Software Download, USB Cable and Certification of Conformance |
Options: | Xtreme Boot and Stand |
Limited Warranty: | 1 year limited warranty |
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