Mirion Technologies MBD-1 Users manual
OPERATING MANUAL
MBD-1
Personal Dosimeter
Document No: 2096 6832
Revision 1.0
4th May 2016
Table of Contents
1. Introduction ...................................................................................................................................... 4
1.1.History ......................................................................................................................................... 5
2. Description ....................................................................................................................................... 6
2.1. Physical Description .............................................................................................................. 6
2.2. Power Management & Storage ............................................................................................ 8
2.2.1. Sleep Mode ..................................................................................................................... 9
2.2.2. Dormant Mode ............................................................................................................... 9
3. Operation ........................................................................................................................................ 10
3.1.Battery ....................................................................................................................................... 10
3.1.1.Removal / Replacement ............................................................................................. 10
3.1.1.1.Removal ............................................................................................................... 10
3.1.1.2.Replacement ....................................................................................................... 10
3.1.1.3.Low Battery Indication ..................................................................................... 11
3.2.Start-up and Diagnostics ..................................................................................................... 11
3.2.1.Start-up ........................................................................................................................... 11
3.2.2.Diagnostics .................................................................................................................... 11
3.2.3.Operation ....................................................................................................................... 12
3.3.Interaction with Data Acquisition Kit (DAK-1) ................................................................ 13
3.3.1.DAK-1 Description ....................................................................................................... 13
3.3.2.MBD Reader Software Operating Instruction ....................................................... 13
3.3.2.1.Set-up ................................................................................................................... 13
3.3.2.2.Main Window ...................................................................................................... 14
3.3.2.3.Dosimeter Data Tab .......................................................................................... 15
3.3.2.4.Download Data Records .................................................................................. 16
3.3.2.5.Reset Tab ............................................................................................................. 17
3.3.2.6.DC-1 Tab .............................................................................................................. 19
3.3.2.7.Pulsed Field Mode Tab ..................................................................................... 20
4. Technical Specifications............................................................................................................. 21
4.1.Radiological ............................................................................................................................. 21
4.2.Physical Characteristics ...................................................................................................... 21
4.3.Environmental Characteristics ........................................................................................... 21
4.4.Electrical Characteristics ..................................................................................................... 21
MBD-1 Document No 2096 6832 2
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This device complies with part 15 of the FCC Rules. Operation is subject to the
following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that
may cause undesired operation.
FCC Compliance Statement
The device is supplied in the package without the battery installed. (The battery is packaged
separately in the package). The FCC-code is visible at the bottom of the battery compartment.
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is
no guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
—Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
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1. Introduction
The MBD-1 design makes best use of the benefits of passive radiation detection with active, selfreading and recording functionality. The battery powered system includes on-board digital processing to
provide a self-reading, accurate, reliable dose measurement on an integrated LCD display. Radiation
exposure records are stored at a configurable frequency.
This active system is combined with the advantages of the patented DIS (Direct Ion Storage) passive
detector technology. The passive radiation detectors are continuously responsive to radiation, with or
without the field-replaceable battery. The internal electronics provide self-reading measurement
display, digital memory, data logging, BLE (Bluetooth Low Energy) wireless communication, IR wireless
switching, and on-board diagnostic testing during startup and operational modes. All data reside in
non-volatile memory for dose-of-record processing so there is never any danger of losing stored data or
configuration settings on battery failure. The diagnostics measure and display battery condition and
fault conditions of the device. At issuance and during operation, the user will know when their device is
working and when it requires attention. The dosimeter has no pushbuttons or switches and therefore
operation is extremely simple.
The MBD-1 provides direct dose information to the wearer in the field. The display can be configured to
show any measurement value (i.e. total dose, gamma dose or neutron dose), or automatically scroll
through any combination.
The MBD-1 also stores a dose record once per day (default) to a nonvolatile memory. Data recording is
configurable. This information is available for periodic reading and subsequent analysis to provide the
dose-of-record information for the user.
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1.1. History
The MBD-1 is based upon Mirion Technologies’ patented Direct Ion Storage (DIS) technology. Direct
Ion Storage technology is a method for detecting ionizing radiation through use of an ion chamber
detector combined to a simplified method for computing dose from a voltage value from the detector.
DIS technology has been evolving from early 90’s from the primary DIS-1 dosimeter through several
iterations to the current design. Since the basic detecting technology is based upon the same physical
properties as modern reference ion chambers, the technology itself provides an effective method to
achieve accurate results under challenging measurement conditions present in mixed radiological
environments. The technology is unique in that it provides accurate dose calculations even under
extreme pulsed radiation environments where typically only passive TLD type devices perform well.
This technology is superior because it can provide immediate read-out capability. A typical DIS
detector combines an ion chamber with an analog memory element that converts exposure to a charge
that is converted to a simple voltage signal that is measured and reported as dose.
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1. LCD Display
3. D-Clip (2) for Wristband
2. Screen Protector and Label
4. Battery Compartment Cover
2. Description
2.1. Physical Description
The MBD-1 Battlefield Dosimeter is a wrist worn (like a wrist watch) or chest worn (clipped to lanyard,
pocket, etc.) measurement device providing the wearer real-time radiation exposure data. The MBD-1
features an LCD display, IR and BLE communication, adjustable wristband and/or clip, and field
replaceable battery.
The MBD-1 displays incremental gamma, neutron and beta exposure in configurable display formats
(individual scrolling channels, individual channel or total) and configurable measurement intervals.
Exposure is displayed in units of (m)Rem or (m)Rad. Battery power level is reported using an
interactive symbol found in commercial electronics.
Radiological performance covers the full Hp (10) photon energies and features flat energy response
from 80 KeV to 1.25 MeV range. Recorded data is retained in the MBD-1 in non-volatile memory.
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Figure 2-1: MBD-1 Physical Features
Detector
Code
LLD
Upper Range
Deep - Gamma
DIS Low Range
DL
10 µSv
(1 mrem)
600 mSv
(60 rem)
DIS High Range
DH
1 mSv
(100 mrem)
6 Sv
(600 rem)
MOSFET
DA
10 mSv
(1 rem)
20 Sv
(2000 rem)
Deep – Neutron
ɣ+ n DIS
NL
1.5 mSv
(150 mrem)
6 Sv
(600 rem)
ɣ DIS
NG
1.5 mSv
(150 mrem)
600 rem
(600 mSv)
Pin Diode
NA
10 mGy
(1 rad)
10 Gy
(1,000 rad)
The MBD-1 includes six separate detector elements:
Three (3) elements are provided for gamma measurements,
Three (3) elements are provided for neutron measurements.
Each detector element is listed in Table 2-1, MBD-1 Detector Table and Figure 2-2, MBD-1 Detectors
and Measurement Range Chart below.
Note that while Figure 2-2 lists dose units in rem, any displayed results from the gamma accident range
(DA) or neutron accident range (NA) detector elements are provided in rad.
Table 2-1: MBD-1 Detector Table
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Figure 2-2: MBD-1 Detectors and Measurement Range Chart
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