RADIAGEM4

Type Emetteur Code Article Indice Format Page

DEX 040 68989 G 4 1 / 30

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Des informations confidentielles sont contenues dans ce document. Toute reproduction doit tre soumise l'accord de CANBERRA.Confidential information are included in this document. Copy of this document is submitted to CANBERRA acceptance.

Rfrence informatique : R:\Documentation\Radioprotection_mobile\RADIAGEM4\DEX\68989_G.doc

Titre / Title : User manual RADIAGEM 4 (spcial USA)

HISTORIQUE DES MODIFICATIONS / MODIFICATIONS CHRONOLOGY

Ind.Rev.

DateDate

Origine des modificationsModifications origin

Paragraphes concernsRelated sections

A 02/10/2001 Premire dition / First edition

B 02/02/2002 Remise en forme du document suite la nouvelle chartegraphique AREVA et mise jourUp-dating

Tous

C 05/06/2002 Mise jour 3.1.1, 4.3, 4.4.2, 4.4.3,4.5.1.3, 5.2, 5.3.6, 6.1

D 03/07/2002 Mise jour de la forme du manuel spcial USA suite runiontlphonique du 03/06/2002.

Tous

E 22/07/2002 Manuel complt par TELERADIAGEM 6.6

F 21/10/2002 Photo face arrire RADIAGEM 4 Figure 5

G 06/10/2003 Affichage dun nombre 4 chiffres et pas de bargraphe poursonde bta mous seulement

6.1

Document sans signature ;Original consultable au service Documentation Loches

Manuel utilisateur / User's manualInd. Rdig par / Written by Vrifi par / Verified by Approuv par / Approved by

Date / Date 06/10/2003 Date / Date 06/10/2003 Date / Date 06/10/2003

Nom / Name Peggy CHAMEAU Nom / Name Pascal BLOT Nom / Name Eric MEYERGVisa / Visa Visa / Visa Visa / Visa

USER MANUAL

RADIAGEM 4code 68830

USER MANUAL

PORTABLE DOSERATE METERRADIAGEM 4

code 68830

October 2003

USER MANUAL

RADIAGEM 4

PORTABLE DOSERATE METER

68989_G.doc

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MERIDEN, CT 06450

WARNING

CANBERRA cannot be held responsible for any damage incurred by the buyer due to faulty use,connection to the wrong voltage, or non-observance of the instructions found in this manual.

The information contained herein may be altered without notice.

Any full or partial reproduction of this document may only be made after obtaining prior permissionfrom CANBERRA.

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SUMMARY

1. PRESENTATION ............................................................................................................................... 9

2. DESCRIPTION................................................................................................................................... 9

2.1. THE COVER............................................................................................................................... 9

2.2. THE BASE ................................................................................................................................. 9

3. INSTRUMENT CHARACTERISTICS................................................................................................ 12

3.1. PHYSICAL CHARACTERISTICS ............................................................................................. 12

3.1.1. Measuring ranges ....................................................................................................... 12

3.1.2. Energy range .............................................................................................................. 12

3.1.3. Accuracy..................................................................................................................... 12

3.2. ELECTRICAL CHARACTERISTICS......................................................................................... 13

3.3. MECHANICAL CHARACTERISTICS........................................................................................ 13

3.4. ENVIRONMENTAL CHARACTERISTICS................................................................................. 13

3.4.1. Temperature ranges ................................................................................................... 13

3.4.2. Protection classification............................................................................................. 13

3.4.3. Dropping impact......................................................................................................... 13

3.4.4. Electromagnetic compatibility.................................................................................... 13

3.4.5. Storage and transport ................................................................................................ 13

4. SETTING UP AND CHECKING THE INSTRUMENT ........................................................................ 14

4.1. INSERTING THE BATTERIES.................................................................................................. 14

4.2. THE KEYPAD........................................................................................................................... 14

4.3. SWITCHING ON AND TESTING THE SYSTEM ....................................................................... 14

4.4. MEASURING GAMMA DOSE-EQUIVALENT RATE ................................................................ 16

4.4.1. Measurement display ................................................................................................. 16

4.4.2. Unit of measurement display ..................................................................................... 16

4.4.3. Pulses audible signal and alarm symbol................................................................... 16

4.5. PROBE IDENTITY CODES....................................................................................................... 17

4.5.1. System checks in "MEASUREMENT" mode.............................................................. 174.5.1.1.Battery voltage testing .................................................................................................. 174.5.1.2.Proper detector function testing..................................................................................... 174.5.1.3.Measurement saturation ............................................................................................... 174.5.1.4.Operational defect ........................................................................................................ 17

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5. RADIAGEM FUNCTIONS ................................................................................................................ 18

5.1. BASIC FUNCTIONS................................................................................................................. 18

5.2. DIALOGUE FUNCTIONS.......................................................................................................... 18

5.3. PARAMETER-SETTING FUNCTION........................................................................................ 19

5.3.1. Access code ............................................................................................................... 19

5.3.2. Accessing the RADIAGEM's dose-rate alarm levels ................................................. 20

5.3.3. Accessing the external probes' dose-rate alarm levels............................................ 21

5.3.4. Accessing the RADIAGEM's cumulated dose alarm levels ...................................... 21

5.3.5. Accessing the probe's cumulated dose alarm levels ............................................... 22

5.3.6. Accessing the contamination alarm levels ............................................................... 22

6. EXTERNAL PROBES...................................................................................................................... 23

6.1. CONNECTING THE PROBES.................................................................................................. 23

6.2. SB29 CONTAMINATION PROBE (code 18376) ...................................................................... 23

6.3. SFDE LOW DOSE RATE GAMMA-RAY PROBE (code 18368)............................................... 23

6.4. SHDE HIGH DOSE RATE GAMMA-RAY PROBE (code 18484).............................................. 24

6.5. STHF VERY-HIGH DOSE RATE GAMMA-RAY PROBE (code 21538).................................... 24

6.6. TELERADIAGEM..................................................................................................................... 25

6.6.1. Description ................................................................................................................. 25

6.6.2. Characteristics ........................................................................................................... 256.6.2.1.Mechanical characteristics............................................................................................ 256.6.2.2.Electrical characteristics ............................................................................................... 266.6.2.3.Physical characteristics ................................................................................................ 266.6.2.4.Environmental characteristics ....................................................................................... 266.6.2.5.Electronical characteristics ........................................................................................... 26

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Figure 1: RADIAGEM 4 dose rate meter equipped with beta SB 29 probe

Beta contamination probe

Base

Cover

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Figure 2: Belt case (code 43009) for both RADIAGEM & SB 29

Figure 3: Carrying case (code 18534)

SB 29

SB 29

User manual

Batteries

RADIAGEM

RADIAGEM

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1. PRESENTATION

The RADIAGEM is a dose rate meter used for gamma radiation H*(10) dose-equivalent measurement.

An energy-compensated Geiger-Mller counter is used to detect radiation.

The instrument has an easily decontaminated ABS-polycarbonate plastic casing to which the user canconnect specialised probes.

Types of probes:- Soft Beta radiation surface-contamination probe with Geiger-Mller counter: SB 29- Low level Gamma-radiation probe with Geiger-Mller counter: SFDE- High level Gamma-radiation probe with Geiger-Mller counter: SHDE- Very-high level Gamma-radiation probe with a silicon diode: STHF

2. DESCRIPTION

See Figure 1.

The monitor is composed of three distinct parts:- a cover with a keypad and a piezoelectric crystal beeper;- a base with a battery compartment and the probe connector;- the Geiger-Mller counter, electronic circuitry and display are fitted between the unit's base and

cover.

2.1. THE COVER

See Figure 4.

The RADIAGEM's various controls are found on the casing's top panel.

The measurements are shown on the liquid crystal display.

A keypad with three keys is used to:- switch the device on,- switch the display light on,- activate the audible signal (beeps).

2.2. THE BASE

See Figure 5.

The base holds the following elements:- a probe connector for connecting specialised probes,- the battery compartment,- a strap for carrying the RADIAGEM.

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Figure 4: Front view

G.M. center

Display lighting switch

On/Off switch

Piezzo beeper

Beeper switch

Display

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Figure 5: Rear view

Probe connector

Fixing screw

Battery cover

Strap

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3. INSTRUMENT CHARACTERISTICS

3.1. PHYSICAL CHARACTERISTICS- Audible alarm: a piezoelectric crystal beeper loudspeaker is located below the keypad.- Visual alarm: the ALARM symbol flashes on the display.- 10 alarm levels are pre-set for the dose equivalents (see paragraphs 5.3.2 & 5.3.3).- 10 alarm levels are pre-set for the cumulated dose equivalents (see paragraphs 5.3.4 & 5.3.5).

3.1.1. Measuring ranges

The measuring ranges depend on the sensitivity of the dosimetry probe used:

RADIAGEM-4: 0.01 mrem/h to 9.99 rem/h

Sensitivity: 8.3 c/s per mrem/h (137Cs)

Display: 0.01 to 99.99 mrem/h

0.10 to 9.99 rem/h

RADIAGEM 4 + SB29: 6 to 9999 cpm

RADIAGEM 4 + SFDE: 0.01 mrem/h to 9.99 rem/h


RADIAGEM 4 + SHDE: 0.10 mrem/h to 1000 rem/h


RADIAGEM 4 + STHF: 1.00 mrem/h to 9999 rem/h


NOTE : The useful measuring range begins when at least two significant digits are displayed; the usefulmeasuring range of the RADIAGEM-4 using the SFDE probe therefore starts at 0.10 mrem/h, althoughlower indications are correct and stable.

3.1.2. Energy range

RADIAGEM-4, RADIAGEM-4 with low-level radiation probe SFDE, RADIAGEM-4 with high-levelradiation probe SHDE: 40 keV to 1.25 MeV,

RADIAGEM-4 with very high-level radiation probe STHF: 50 keV to 2 MeV.

3.1.3. Accuracy

15 % of the display ( 1 point of the least significant digit).

The parameters of the probes' sensitivity ranges are stored in the probes and are read by theRADIAGEM to ensure that the probes are perfectly compatible.

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3.2. ELECTRICAL CHARACTERISTICS

Power supply: 2 x 1.5 V - 2.25 A.h. alkaline batteries (AA type).

Autonomy: > 80 hours without lighting or external probe.

3.3. MECHANICAL CHARACTERISTICS

The RADIAGEM's casing is made of a highly-resistant moulded ABS - polycarbonate composite plastic.It is compact, easily decontaminated, and tightly sealed.

Dimensions: Length: 145 mm (excluding strap fastener)

Width: 85 mm

Thickness: 45 mm.

Weight: < 300 g, batteries included.

3.4. ENVIRONMENTAL CHARACTERISTICS

3.4.1. Temperature ranges

Operating temperature: + 14 F to + 122F

Storage temperature: - 13 F to + 140F

3.4.2. Protection classification

IP 67.

3.4.3. Dropping impact

Withstands drops from a maximum height of 1.5 m.

3.4.4. Electromagnetic compatibility

The RADIAGEM has successfully met electromagnetic compatibility tests (EMC) in compliance with ECdirective: product standard NF-EN-55022, generic standards NF-EN-50081-1 and NF-EN-50082-2. Itbears the EC conformance label.

3.4.5. Storage and transport

A rigid transport case is designed to hold a RADIAGEM, a SB29 probe and a 1.5 m connecting cable(see Figure 3).

Two belt pouches are also available, either for a RADIAGEM on its own, or for a RADIAGEM along witha disconnected SB 29 probe (see Figure 2).

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4. SETTING UP AND CHECKING THE INSTRUMENT

4.1. INSERTING THE BATTERIES

To open the battery compartment:- Loosen the screw at the back using a screwdriver,- Remove the battery cover.

Insert two (AA) type batteries in the compartment ensuring that the polarity is correctly set (check thediagram at the bottom of the compartment).

Close the battery compartment and tighten the screw.

4.2. THE KEYPAD

The keypad has three keys:On / Off.

Enables/disables the audible signal (beeps).Inhibits the audible alarm.

Lights the display.

4.3. SWITCHING ON AND TESTING THE SYSTEM

Press the key down long enough for Figure 6 to appear on the display, then release the key.

When the instrument is on, the microcontroller tests its proper functioning as follows:- It tests all the LCD segments (Figure 6), and activates the audible alarm (2 beeps),

Figure 6

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- It checks the battery voltage (Figure 7): the display shows the percentage of battery capacityremaining,

Figure 7

- It checks the detector's polarisation voltage (Figure 8): the display shows the high-voltage reading, involts.

Figure 8

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Following these tests, the device switches to the dose equivalent rate "MEASUREMENT" mode andFigure 9 appears on the display.

Figure 9

Nota: If the remaining capacity of the batteries is less than 10%, the battery symbol appears on the displayin the measurement mode.

4.4. MEASURING GAMMA DOSE-EQUIVALENT RATE

After being turned on, the system automatically switches to the "MEASUREMENT" mode. Figure 9appears on the display.

4.4.1. Measurement display

Measurements are displayed in two ways:- A stable 4-digit mean numerical value is shown, indicating the dose equivalent rate (response time

depends on the detection pulse rate and varies between 1 and 10 seconds).

- An instantaneous analogue bar graph based on a semi-logarithmic scale depicts the variations in thedose equivalent rate (shorter response time: from 1/4 s to 10 s).

4.4.2. Unit of measurement display

The unit of measurement changes automatically; it is accompanied by an audible beep, as well as by aflashing display of the new unit for 20 s.

The measuring units are, respectively: mrem/h, rem/h, mrem, rem and cpm.

4.4.3. Pulses audible signal and alarm symbol

A warbling signal is audible and the ALARM symbol flashes on the display:- when the dose rate exceeds the alarm level (successive audible beeps are heard).

The pulses detected are audible linearly up to 45 cps.

The user can inhibit the dose rate audible alarm whereas the ALARM symbol continues to flash.

To enable (or disable) the audible signal, simply press the key: the corresponding icon willflash on the display (Figure 9).

- when a cumulated dose alarm level is exceeded (two audible beeps are emitted per minute).

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4.5. PROBE IDENTITY CODESThe RADIAGEM automatically detects the presence of a probe, whether it is connected duringmeasuring operations or whether it is present at the time the instrument is switched on.If an external probe is connected, the internal detector's pulses are inhibited.The type of probe connected is shown on the display:

TYPE OF PROBE MESSAGE DISPLAYED

Beta EXT. b

Gamma EXT. g

4.5.1. System checks in "MEASUREMENT" mode

4.5.1.1. Battery voltage testingThe system checks the remaining available battery capacity every minute. A test is carried out inrelation to two alarm levels: S1 = 1.8 V and S2 = 1.6 V.If the battery voltage falls between S1 and S2, the battery icon flashes on the display.

NOTE: The RADIAGEM switches off if the battery voltage drops below 1.6 V.

4.5.1.2. Proper detector function testing

The RADIAGEM continually checks to ensure the detector registers a minimum count rate (due to the genvironment). If no pulses are detected within a given time period, the system indicates there is adetector defect by displaying (the display is switched off) and by sounding 1 audible beep every 10seconds.The RADIAGEM signals the defect for as long as it persists.- 25 min. for SB29 or SHDE- 200 s for RADIAGEM or SFDE- 4 h 30 min for STHF

4.5.1.3. Measurement saturation

The RADIAGEM activates both an audible and a visual alarm (the "ALARM" symbol flashes) when thedose rate measurement exceeds a probe's maximum measurable level.

RADIAGEM 4: above 9.99 rem/h, "9999 rem/h" flashes.PROBES:- SFDE low dose-rate probe: above 9.99 rem/h, "9999 rem/h" flashes- SHDE high dose-rate probe: above 1000 rem/h, "9999 rem/h" flashes- STHF very high radiant flux probe: above 9999 rem/h, "9999 rem/h" flashes- SB 29 contamination probe: above 9999 cpm ( 166 cps), "9999 cpm" flashes

WARNING: With the SB 29 probe, the RADIAGEM has a saturation when the dose ratemeasurement exceeds 9999 cpm, i.e. 166 cps.

The ALARM - Hp display appears flashing, and the value is displayed.

4.5.1.4. Operational defectThe "DEF" display appears in the following situations:- in case of fault in the programming of the RADIAGEM's internal parameters,- in case of fault in the programming of the probe's parameters,

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5. RADIAGEM FUNCTIONS

5.1. BASIC FUNCTIONS

This key switches the dose meter "On" or "Off".

When the dose meter is "On", the display can be lit by pressing this key briefly. Press this keyonce again to switch the light off.

When the dose meter is "On", pressing this key briefly makes the detector's discharge pulsesaudible (the loudspeaker icon is displayed). To disable this function, press this key onceagain.

NOTE: When an alarm level is exceeded, the RADIAGEM emits an audible alarm; the user can inhibit thisalarm by pressing this key (only the ALARM display continues to flash). An audible beep is heard eachtime this key is pressed.

5.2. DIALOGUE FUNCTIONS

These functions are accessible when the dose meter is in "MEASUREMENT" mode.

+ Briefly pressing these two keys simultaneously enables the display of thecumulated dose since switching on (Figure 10).

+ Briefly pressing these two keys simultaneously enables:

access to the highest dose equivalent measured since switching on(Figure 11).

+ Briefly pressing these two keys simultaneously enables:

- access to the dose-rate alarm level selected,

- access to the cumulated dose alarm level selected.

All these values are only displayed for a few seconds. Subsequently, the dose meter automaticallyreturns to the "MEASUREMENT" mode.

Figure 10

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Figure 11

5.3. PARAMETER-SETTING FUNCTION

When the RADIAGEM is in the "MEASUREMENT" mode, the user can access the system parametersby entering an access code.

5.3.1. Access code

+ + Briefly pressing these three keys simultaneously enables theuser to enter a code giving access to the dose equivalent ratealarm levels and the cumulated dose alarm levels (Figure 12).The code is 2000 and can not be changed.

Figure 12

Enter the code by using the and keys:

- The key enables the incremental increase of the flashing digit.

- The key enables setting the value of the digit and going on to the next digit; this proceduremust be undertaken for all four digits.

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When the final digit has been set and providing the access code is correct, the instrument displays thealarm level selected (Figure 13).

Figure 13

If the code entered is not correct, the system reverts to its test routine and the measurement mode(Figure 5, Figure 6, Figure 7 and Figure 8).

5.3.2. Accessing the RADIAGEM's dose-rate alarm levels

After having entered the correct access code (see 5.3.1.), the selected dose-rate alarm level isdisplayed and the user may then modify the selected value if desired.

The user has a choice of 10 dose-rate alarm levels.

RADIAGEM-4:0.25 mrem/h, 0.75 mrem/h, 2.5 mrem/h, 5.00 mrem/h, 10.00 mrem/h, 25.00 mrem/h, 50.00 mrem/h,0.10 rem/h, 0.20 rem/h, 0.50 rem/h.

Holding down the key enables scrolling up through the alarm levels by positive increments.

Holding down the keys enables scrolling down through the alarm levels by negative decrements.

When the desired alarm level is displayed, release the scroll key for a few seconds; the alarm level isthen stored automatically.

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5.3.3. Accessing the external probes' dose-rate alarm levels

NOTE: Access to these alarm levels is only possible if the corresponding probe is connected to theRADIAGEM.

SFDE LOW-LEVEL PROBE:0.25 mrem/h, 0.75 mrem/h, 2.50 mrem/h, 5.00 mrem/h, 10.00 mrem/h,25.00 mrem/h, 50.00 mrem/h, 0.10 rem/h, 0.20 rem/h, 0.50 rem/h.

SHDE HIGH-LEVEL PROBE:0.10 rem/h, 0.20 rem/h, 0.25 rem/h, 0.30 rem/h, 1.00 rem/h, 2.50 rem/h, 10.00 rem/h, 50.00rem/h,100.0 rem/h, 250.0 rem/h.

STHF VERY-HIGH FLUX PROBE:0.10 rem/h, 0.30 rem/h, 1.00 rem/h, 3.00 rem/h, 10.00 rem/h, 30.00 rem/h, 100.0 rem/h,300 rem/h, 1000 rem/h, 9999 rem/h.

As explained previously, holding the key down enables scrolling up through the alarm levels.

Holding the key down enables scrolling down through the alarm levels.

When the desired alarm level is displayed, release the scroll key for a few seconds; the value displayedis then stored automatically in the probe.

5.3.4. Accessing the RADIAGEM's cumulated dose alarm levels

When the dose-rate alarm level has been selected, two audible beeps are heard and the display thenshows the selected cumulated dose alarm level.

The user may then modify this selection. As with the dose-rate alarm levels, there are ten possiblepredetermined cumulated dose alarm levels to choose from:

RADIAGEM-42.00 mrem, 5.00 mrem, 10.00 mrem, 25.00 mrem, 50.00 mrem,0.10 rem, 0.20 rem, 0.25 rem, 0.30 rem, 1.00 rem.

In order to scroll through the alarm levels, press the and keys.

Wait several seconds to allow for the automatic storage of the alarm level displayed.

The dose meter resumes its MEASUREMENT mode after a system-checking phase.

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5.3.5. Accessing the probe's cumulated dose alarm levels

NOTE: Access to these alarm levels is only possible if the corresponding probe is connected to theRADIAGEM.

SFDE LOW-LEVEL PROBE:2.00 mrem, 5.00 mrem, 10.00 mrem, 25.00 mrem, 50.00 mrem,0.1 rem, 0.20 rem, 0.25 rem, 0.30 rem, 1.00 rem.

SHDE HIGH-LEVEL PROBE:25.00 mrem, 50.00 mrem,0.10 rem, 0.20 rem, 0.25 rem, 0.30 rem, 1.00 rem, 2.50 rem, 10.00 rem, 20.00 rem.

STHF VERY-HIGH LEVEL PROBE:30.00 mrem, 0.10 rem, 0.30 rem, 1.00 rem, 3.00 rem, 10.00 rem, 30.00 rem, 100.00 rem, 300.0 rem,999.9 rem.

In order to scroll through the alarm levels, hold down the and keys.

Wait several seconds for the automatic storage of the displayed alarm level.

The RADIAGEM resumes its "MEASUREMENT" mode after a system-checking phase.

5.3.6. Accessing the contamination alarm levels

When an external SB29 b contamination probe is connected to the dose meter, the user can select from10 contamination alarm levels:120 cpm, 180 cpm, 300 cpm, 600 cpm, 900 cpm, 1200 cpm, 1800 cpm, 3000 cpm, 4200 cpm,6000 cpm.

Access is possible in the same manner as for the dose-rate alarm levels.

When the alarm level has been selected, the RADIAGEM resumes its "MEASUREMENT" mode after asystem-checking phase.

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6. EXTERNAL PROBES

6.1. CONNECTING THE PROBES

Four types of probes can be connected to the RADIAGEM:- the "soft beta radiation" contamination probe, which can be connected directly to the doserate meter

(Figure 1) or via a 1.5 m or 30 m cable,- the low-level gamma ray dose-rate probe (via a 1.5 m or 30 m cable),- the high-level gamma ray dose-rate probe (via a 1.5 m or 30 m cable),- the very-high level gamma ray dose-rate probe (via an interface unit and a 50 m cable).

Connect the external probe to the FISCHER S0V 104 A086-160 connector at the casing's rear. Betterconnect the STHF when the RADIAGEM is switched off.

The EXT symbol is displayed, as well as the type of probe connected - either b or g. Two audible"beeps" are generated.

ONLY WITH THE SOFT BETA PROBE, THE BARGRAPH IS NOT DISPLAYED ; THE FOUR-DIGITMEAN NUMERICAL VALUE IS ONLY SHOWN.

6.2. SB29 CONTAMINATION PROBE (code 18376)

This is a "Soft Beta" radiation probe equipped with a Geiger-Mller counter with a very thin micawindow, protected by a 75% transparent grid:- thickness of the window: 1.5 to 2 mg/cm2.- sensitive area: 6 cm2.

The background noise is 15 to 20 counts per minute.

Detection efficiency in relation to energy levels: 8 % over 2p for 14C 22 % over 2p for 36CI 25 % over 2p for 90Sr + 90Y 28 % over 2p for 60Co

Length: 90 mmDiameter: 38 mm

Weight: 120 g.

6.3. SFDE LOW DOSE RATE GAMMA-RAY PROBE (code 18368)

Energy-compensated Geiger Mller counterSensitivity: 8.3 cps per mrem/h (137Cs)Energy range: 40 keV to 1.25 MeVMeasuring range: 00.10 mrem/h to 9.99 rem/h


Weight: 200 g

Protection Index: IP 68

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6.4. SHDE HIGH DOSE RATE GAMMA-RAY PROBE (code 18484)

Energy-compensated Geiger Mller counterSensitivity: 0.3 cps per mrem/h (137Cs)Energy range: 40 keV to 1.25 MeVMeasuring range: 00.10 mrem/h to 1000 rem/h


Weight: 200 g

Protection Index: IP 68

6.5. STHF VERY-HIGH DOSE RATE GAMMA-RAY PROBE (code 21538)

Energy-compensated silicon diode.Sensitivity: 0.017 c/s per mrem/h (137 Cs)Energy range: 50 keV to 2 MeV.Measuring range: 1.00 mrem/h to 9999 rem/h.

Probe:- Length: 93 mm, including packing gland,- Diameter: 20 mm,- Weight: 100 g.- Protection index: IP68 (immersion under 80m of water); stainless steel casing resistant to borated

water containing 10 g/l of boric acid.

Interface unit connected to the probe via a 50 m cord with packing gland and to the doserate meter by a25 cm cord:

- Length: 63 mm.- Width: 58 mm- Thickness: 38 mm- Weight: 200 g- Protection index: IP 65, aluminium casing.

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6.6. TELERADIAGEM

6.6.1. Description

A TELERADIAGEM is a RADIAGEM connected to a TELEPROBE (TELE-SHDE or TELE-SFDE).

Figure 14: TELEPROBE

The TELEPROBE kit consists of a low (TELE-SFDE) or a high (TELE-SHDE) gamma flux measurementprobe hooked to the extremity of a telescopic pole on which a RADIAGEM unit can be fixed byconnecting clips. The probes are connected to the RADIAGEM through a cable located inside thetelescopic pole.

The probes SHDE and SFDE are made with the detector inside (Geiger Mller), and its associatedelectronics.

The calibration parameters of the probes are stored in a non volatile memory; these parameters arefactory set, individually for each probe.

The power supply of the probe, the pulse counting and the display of the dose-equivalent rate arecarried out by the RADIAGEM unit that also monitor the alarm feature for the dose rate.

6.6.2. Characteristics

6.6.2.1. Mechanical characteristics

Probes: stainless steel case

Dimensions:- Length: telescopic pole extensible from 1.1 m (folded up) to 4 m (unfolded); extremity's diameter:

23 mm.

- Width : 85 mm- Thickness : 103 mm- Weight : 2.1 kg (RADIAGEM included)

The TELEPROBES TELE-SHDE and TELE-SFDE are delivered in an individual carrying case providedfor the transport which can also contain the RADIAGEM.

Length : 1350 mm

Length : 230 mm

Thickness : 230 mm

Weight : 8.8 kg

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68989_G.doc

Figure 15: Carrying case

6.6.2.2. Electrical characteristics

Power supply: + 5 V DC, provided by the RADIAGEM (2 R6 1.5 V 2.25 A.h. alkaline batteries - AAtype)

Consumption: < 22 mA; the RADIAGEM has an autonomy of 40 h except alarm triggering.

The TELEPROBE is connected to the RADIAGEM through a connector FISCHER, ref.: SE 104 A066-100/5.1. The pinout is:- pin 2: probe identity codes,- pin 3: ground,- pin 4: + 5 V,- pin 6: saturation,- pins 7 and 8: reception.

6.6.2.3. Physical characteristics

As TELEPROBES use a SFDE or a SHDE probe, see 5.3.3, 5.3.4 and 5.3.5.

6.6.2.4. Environmental characteristics

Operating temperature: + 14 F to + 122F

Storage temperature: - 13 F to + 140F

Maximal relative humidity: 80% at 113F

6.6.2.5. Electronical characteristics

Each probe has a compact metal case which includes the GEIGER-MULLER detector, the high voltagepower supply and the pulse shaping circuits.

The operating life of irradiated electronic components of SHDE and SFDE probes (power on or off) isapproximately 50 000 rem.

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RADIAGEM4