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health physics
A Mirion Technologies Division
EDIS-1 Environmental Direct Ion Storage Dosimeter
Passive Dosimetry
FEATURES
direct measurement of H*(10) over the •
entire energy range
instant non-destructive readout and dose reset •
with a table-top reader
passive operation•
insensitive to EM and RF interference•
operation at high dose rates and in pulsed elds•
built-in memory chip for measurement •
location identi cation storage
small, rugged and waterproof•
a replacement to TLD and lm•
up to 12 month issue period•
EDIS-1
Environmental Direct Ion Storage Dosimeter
The new RADOS EDIS-1 is an Environmen-
tal Direct Ion Storage Dosimeter o ering an
alternative to TLD or lm dosimeter.
The EDIS-1 dosimeter is based on an ionisation
chamber combined with a modern electronic
Direct Ion Storage (DIS) memory cell. The Ion
chamber is widely used as a reference detec-
tor in radiation detection and is now available in
everyday dosimetry applications. The EDIS-1
dosimeter can be read in nitely and non-
destructively without any loss of dose informa-
tion. This unique feature allows the user of the
EDIS-1 to instantly read environmental doses
whenever necessary.
The radiological range of the EDIS-1 covers the
entire H*(10) photon energies without any com-
promises. The wide dose and energy range, the
ability to operate in pulsed elds and the perfor-
mance at high dose rates make EDIS-1 an ideal
device for all kinds of radiation dosimetry appli-
cations. The EDIS-1 allows for the detection of
heavy, high-energy ions and its immunity to any
external interference is unequalled. There are no
deviations in the dose readings even at very high
EM or RF elds.
The excellent radiological features and the easy
and fast reading of the EDIS-1 dosimeter makes
the new DIS based RADOS dosimetry system
superior to any Film dosimetry or TLD system
without the need for complicated processing
systems.
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www.mirion.com
Mirion Technologies (MGPI) Inc
5000 Highlands Parkway
Suite 150
Smyrna Georgia 30082
USA
T +1.770.432.2744
F +1.770.432.9179
Mirion Technologies (MGPI) SA
BP 1
F-13113 Lamanon
France
T +33 (0) 4 90 59 59 59
F +33 (0) 4 90 59 55 18
Mirion Technologies (RADOS) Oy
P.O. Box 506
FIN-20101 Turku
Finland
T +358 2 4684 600
F +358 2 4684 601
Mirion Technologies (RADOS) GmbH
Ruhrstrasse 49
D-22761 Hamburg
Germany
T +49 40 85193 0
F +49 40 85193 256
EDIS-1 Environmental Direct Ion Storage Dosimeter
Passive Dosimetry
20996030_EDIS1_EN_B
TECHNICAL SPECIFICATIONS:
Physical Characteristics
detector type: three •
TM
DIS (Direct Ion Storage) detectors and two MOSFET detectors
sensitive to gamma and X-ray radiation•
insensitive to neutrons (<5 %)•
instant readout of ICRU dose equivalents: H*(10) 1 μSv to 40 Sv (0.1 mrem to 4000 rem) •
1)
calibration accuracy: ±5 % at 1 mSv •
137
Cs H*(10)
energy response in the dose range up to 1 Sv: •
photons
- H*(10) ±30 % from 15 keV to 9 MeV
angular response: H*(10) ±20 % up to 60° at 65 keV •
1)
When calibrated after every 10 Sv of accumulated dose
Functional Characteristics
recording of o cial H*(10) dose•
memory:•
- calibration date
- dose reset dates
- location ID and name
Mechanical Characteristics
size: 41 x 44 x 12 mm, with holder 47 (95 with strap) x 49 x 13 mm (1.61 x 1.73 x 0.47 in , with •
holder 1.85 (3.74 with strap) x 1.93 x 0.51 in)
weight (w/o holder): 25 g (0.88 oz) •
holder: anodized aluminium•
Environmental Characteristics
temperature range from - 25°C to +50 °C ( 13 °F to 122 °F)•
enclosure class: IP 67 (waterproof)•
The DBR-1 and DBR-2 Readers are designed to read EDIS-1 Dosimeters assembled in the DDH-E Snap-in Dosimeter Holders. To obtain the most recent dose value, the user simply plugs the dosimeter into the reader and the dose values are diplayed in a few
seconds.
Typical energy response of ambient dose equivalent H*(10) of
less sensitive element.
Typical energy response of ambient dose equivalent H*(10)
of more sensitive element
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