The Ludlum Model 23 mrem Electronic Personal Dosimeter is a compact and lightweight (55.9 g / 2.1 oz) pen-type personal dosimeter. It is ideal for the measurement and general monitoring of gamma and X-ray radiation in medical and laboratory environments, as well as any controlled or restricted area where personal radiation monitoring is required or desired. The unit is sensitive to a wide range of energies from 35 keV to 3 MeV. Dose, Dose Equivalent Rate, and alarm values are easily seen on the four-digit LCD screen. An audible alarm is activated if the dose or dose rate exceeds the preset value of the dosimeter. The alarm set points are adjustable from the face of the unit.
For users with multiple EPD units the optional Model 23 mrem Electronic Personal Dosimeter Reader/Software Kit can be used to quickly take data directly from the mrem Electronic Personal Dosimeter via infrared communication to the user’s PC. The software also allows the user to set or change alarm set points quickly.
INDICATED USE: dosimetry monitoring of personnel
DOSE AND DOSE MEASUREMENT RANGE:
0.1 mrem to 99.99 rem (0.001 mSv to 999.9 mSv)
0.1 mrem/hr to 99.99 rem/hr (0.001 mSv/h to 999.9 mSv/h)
Accumulated dose data is automatically deleted when Model 23 is switched ‘On’.
DETECTOR: silicon semiconductor
RADIATION DETECTED: gamma and X-ray (35 keV to 3 MeV)
+/- 10% from 1.0 mrem to 99.99 rem (0.01 mSv to 9999 mSv) (137Cs)
ALARM VOLUME: approximately 60 dB
SENSITIVITY: approximately 2 cpm/μSv/h (20 cpm/mR/hr) (137Cs gamma)
DATA LOGGING: 600 records (optional IR reader required for data transmission to PC)
TEMPERATURE RANGE: -10 to 40 °C (14 to 104 °F)
POWER: one each coin-type lithium battery (CR2450) Part Number 21-8639
BATTERY LIFE: typically one month at eight hours per day
SIZE: 110 x 30 x 12 mm (4 x 1 x 0.5 in.) (H x W x D)
WEIGHT: 59 g (2.1 oz.)