|
Detector Type |
Halogen-quenched Geiger-Mueller tube with thin metal window |
| Detector Size |
3/4" diameter x 3" long |
| Radiation Detected |
Beta, Gamma, X-ray |
|
Display |
Unique logarithmic-scale analog meter |
|
Operating Range |
0 to 10 mR/hr. range on analog meter |
| Sensitivity |
Detects Beta at 35 keV with 90%
efficiency, or
at 1,000 keV with 100% efficiency
Detects Gamma down to 6 keV at 25% efficiency, or
to 35 keV at 90% efficiency, or
to 100 keV at 100% efficiency |
|
Calibration |
"Fixed" at factory to NBS, NIST, and NRC standards using
Cesium-137 gamma source |
|
Example of Isotopes Detected |
14C; 32P; 125I; Co (almost all beta and gamma emitters) |
|
Power Required |
One 9-volt battery NEDA #1604 or equivalent |
|
Battery Life |
Up to 50 hours use at normal background levels |
|
Temperature Range |
- 10° to + 45° C (14° to + 113° F) |
|
Weight |
212 grams (7.5 oz.) with battery |
|
Size |
168 mm x 83 mm x 25 mm (6 5/8" x 3 1/4"x 1 3/8") |
|
Indicators |
LED “ON” indicator and Audio click for count rate |
| Extra Audible Alert |
Beeping at 20 mR/hr, continuous tone at 200 mR/hr. |
| Warranty |
One Year on Geiger-Mueller tube,
Five Years on electronics |
| Country of Make |
USA |
