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SPECIFICATIONS

EPD MK2 Electronic Personal Dosimeter

RADIOLOGICAL
Sensitive to X and y radiation, ß particles
Direct readout of dose equivalents Hp (10) (deep/whole body) and Hp (0.07) (shallow/skin)
Display Units Sv and rem (with prefixes), OR scaled in Sv and cGy (with prefixes)
Neutron Response <2%
Dose Display and Storage 0 μSv to >16 Sv (0 mrem to >1600 rem) auto ranging
Resolution for Display 1 μSv (0.1 mrem), up to 10 mSv (1 rem)
Resolution for Storage 1/64 μSv (=1.5 μrem)
Dose Rate Display 0 μSv/h to >4 Sv/h (0 mrem/h to >400 rem/h) auto ranging
Alarms dual Hp (10) dose and dose rate alarms; Hp (0.07) dose and dose rate alarms
Energy Response Photon, Hp(10) ±50% 15 keV to 17 keV (ref. 137Cs); ±20% 17 keV to 1.5 MeV (ref. 137Cs); ±30% 1.5 MeV to 6 MeV (ref. 137Cs); ±50% 6 MeV to 10 MeV (ref. 137Cs). Photon,Hp(0.07) ±30% 20 keV to 6 MeV (ref.137Cs); ±50% 6 MeV to 10 MeV (ref. 137Cs); Beta, Hp(0.07)±30% 250 keV to 1.5 MeV E (ref.90Sr/90Y)
Angular Response Hp(10) 137Cs ±20% up to ±75°; Hp(10) 241Am ±50% up to ±75°; Hp(0.07) 90Sr/90Y ±30% up to ±55°
Accuracy Hp(10) 137Cs±10% Hp(0.07) 90Sr/90Y ±20%
Dose Rate Linearity Hp(10) 137Cs ±10% <0.5 Sv/h (<50 rem/h); ±20% 0.5 Sv/h to 1Sv/h(50 to 100 rem/h); ±30% 1 Sv/h to 2 Sv/h(100 to 200 rem/h); ±50% 2 Sv/h to 4 Sv/h(200 to 400 rem/h)
Between 4 Sv/h and 50 Sv/h continues to accumulate dose at a rate > 4Sv/h
Hp(0.07) 90Sr/90Y±20% <1Sv/h (<100 rem/h) Between 1Sv/h and 50 Sv/h continues to accumulate dose at a rate > 1Sv/h


MEMORY

  • 10 year data retention without battery
  • Short term dose registers for Hp(10) and Hp(0.07)
  • Approved Dosimetry Service (Dose of Record) dose memory area with password protection
  • Peak dose rates with time of occurrence
  • All stored times have 1 second resolution
  • Count down timer, 1 hour 39 minutes 59 seconds maximum, resolution 1 second
  • Event log, 23 entries for time recording of alarms, etc., for incident assessments
  • Dose profile history: settable interval from 2 seconds to 35 hours, stores transitions of Hp(10) and Hp(0.07) at a resolution of 1 μSv (0.1 mrem); will store up to 579 records for transitions up to 127 μSv or less
 

ALARMS

  • Audible and visual alarms for dose, dose rate, count down time, read time and failure modes.
  • Hp(10) dose chirp settable from 0.01 μSv/chirp to 100 μSv/chirp (1 μrem to 10 mrem/chirp)

ELECTRICAL AND MECHANICAL
Power Supply single AA battery 1.5 V alkaline cell for typically 8 weeks continuous operation, OR
3.6 V lithium for typically 5 months continuous operation (interchangeable)

Alarm Sounder Fully sealed typically 97dB(A) at 20 cm with multiple modes
Communications
IR interface up to 1 meter range (39")
Display and Function Control Single button on front (recessed to prevent inadvertent operation)
Size 85 x 63 x 19 mm (3.3" x 2.5" x 0.8") excluding clip
Weight 95 g (3.2 oz) including battery and clip
Case Material High impact polycarbonate/ABS blend

ENVIRONMENTAL

Operating Temperature -10 °C to +40 °C (+15 °F to +105 °F)
Humidity 20% to 90% RH non-condensing
Vibration IEC 1283: 2g, 15min., 10 to 33 Hz
Shock 1.5 m (5’) drop on each surface onto concrete
EMI/EMC Exceeds MIL STD 461D RS103