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Johnson Matthey Tracerco PED Blue, User Manual, Page: 9 / 25

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Johnson Matthey Tracerco PED Blue User Manual Download Page 9

 

 

 

MN1010 Rev. G 

9 of 25 

 

 

If the PED button is pressed during an alarm, the audible alarm is silenced and the vibrating stops. However, the 
relevant LED continues to be activated. 

Attention

: The PED+ and PED-ER+ allow alarm messages to be configured so that, when an alarm is triggered, a 

message related to the specific alarm is displayed. 

2.4.1  Dose alarms 

PEDs have up to four adjustable levels for dose. Alarms are set in ascending order with the ordering of yellow, amber, 
red, dark red (crimson). Alarm levels are checked every second. The alarm levels are set using 

DoseVision™. 

Alarm

 

Sounder and vibration 

Dose alarm LED 

Yellow 

Short pulse, low frequency 

Short amber flash 

Amber 

Medium pulse, low frequency 

Long amber flash 

Red 

Medium pulse, low frequency 

Long red flash 

Crimson 

Long pulse, high frequency 

Constant red 

2.4.2 

Dose rate alarms

 

PEDs have two adjustable alarm levels for dose rate. Alarms are set in ascending order with the ordering of amber 
and red. Alarm levels are checked every second. The alarm levels are set using 

DoseVision™. 

Alarm

 

Sounder and vibration 

Dose alarm LED 

Amber 

Medium pulse, low frequency 

Long amber flash 

Red 

Medium pulse, high frequency 

Long red flash 

2.4.3 

Alarm messages (PED+ and PED-ER+)

 

The PED+ and PED-ER+ allow alarm messages to be configured so that when an alarm is triggered, a message 
related to the specific alarm is displayed as shown below. Messages can be used to help the user make important 
decisions based on their measured radiation exposure. 

 

2.4.4  Dose rate overload 

Alarms alert to dose rate overload as follows: 

Summary of Contents for Tracerco PED Blue

Page 1: ...User Manual Personal Electronic Dosimeters PEDs Date 23 April 2018 Document reference MN1010 Rev G ...

Page 2: ...time of going to press and is given in good faith but it is for the User to satisfy itself of the suitability of the Product for its own particular purpose Johnson Matthey plc JM gives no warranty as to the fitness of the Product for any particular purpose and any implied warranty or condition statutory or otherwise is excluded except to the extent that exclusion is prevented by law JM accepts no ...

Page 3: ...ogging 10 2 6 Tasks 10 2 7 Discrete mode 11 2 8 Handheld mode PED and PED ER 11 2 9 GPS logging PED and PED ER 12 2 10 Battery life 12 2 10 1 PED Blue PED ER and PED IS 12 2 10 2 PED and PED ER 13 3 Operation 14 3 1 Setting up PEDs 14 3 2 Start up and shut down 14 3 3 Navigating the menus 15 3 3 1 Main menu 15 3 3 2 Settings menu 16 3 4 Wearing PEDs 17 3 5 Working with tasks 17 3 6 Working in the ...

Page 4: ... 2 Critical errors 20 4 Maintenance 22 4 1 Upgrading the firmware 22 4 2 Charing the battery 22 4 3 Charging the battery wirelessly PED and PED ER 23 4 4 Cleaning 23 4 5 Calibration 23 4 6 PED IS repairs 24 4 7 Accessories 24 ...

Page 5: ...mospheres hazardous areas Therefore the PED IS must be operated in accordance with the information contained in the document MN1004 Essential Safety Information 1 2 PEDs PEDs measure dose rates in the range 0 to 100 mSv h 0 to10 rem h However the extended range PEDs measure dose rates in the range 0 to 1 0 Sv h 0 to 100 rem h The Tracerco PEDs are as follows PED Blue and PED ER extended range The ...

Page 6: ...data has been transferred to DoseVision 4 Readings screen The screen can be programmed to customise the information to display using DoseVision 5 Case The case is a robust and durable polymer case 6 Button PEDs use a single button for selection and navigation A long press is used to turn on the PED open the menu system and to make selections A short press is used to scroll The button is also used ...

Page 7: ... reading The highest rate of dose µSv h or mrem h detected since the last time the readings were transferred to DoseVision Stay time An estimate of the time left at current dose rate until you reach the next dose alarm The stay time is displayed in minutes with a range of 0 to 999 minutes Dose The total dose of radiation µSv h or mrem h received since the last readings were added onto DoseVision D...

Page 8: ...t accumulated dose values from the time of overload until the data has been cleared and a new accumulation started During the dose rate overload the top of the readings screen show Overload and dose rate is displayed as 100mSv h or 1 Sv h or the equivalent in rem h The dose values are still displayed but flash to indicate possible inaccuracies The status bar shows a warning symbol and the Dose Err...

Page 9: ...m pulse low frequency Long amber flash Red Medium pulse low frequency Long red flash Crimson Long pulse high frequency Constant red 2 4 2 Dose rate alarms PEDs have two adjustable alarm levels for dose rate Alarms are set in ascending order with the ordering of amber and red Alarm levels are checked every second The alarm levels are set using DoseVision Alarm Sounder and vibration Dose alarm LED A...

Page 10: ...fore the memory stores around 2000 hours of operation with a 60s interval and 167 hours with a 5s interval Tracerco recommends using periodic logging if PEDs deployed in areas where dose rates are consistently above background or rapid dose rate fluctuations are not anticipated Intelligent logging In intelligent logging PEDs record the accumulated dose for every 0 01 μSv change in dose In normal c...

Page 11: ...crete mode the screen wakes on an alarm in a dimmed state The discrete mode must be enabled using DoseVision Once enabled the discrete mode icon is shown in the main menu When the discrete mode is switched on a cross is added to the icon 2 8 Handheld mode PED and PED ER The handheld mode allows the PED and PED ER to be used as a dose rate meters or survey meter The PED is effectively measuring H 1...

Page 12: ...cantly affected by how PEDs are used The key factors that can reduce battery life are as are as follows Keeping the display on That is having the screen saver switched off Keeping the PED in elevated radiation fields That is higher than background dose rates Enabling and connecting through Bluetooth PED and PED ER only Enabling the GPS feature PED and PED ER only 2 10 1 PED Blue PED ER and PED IS ...

Page 13: ...e and switching off Bluetooth and GPS when not required The table below gives estimates for the battery life when working at background radiation levels Screensaver Bluetooth GPS Battery life expected from fully charged On Off Off 300 hours approx On On Off 80 hours approx Off Off Off 70 hours approx Off On On 20 hours approx ...

Page 14: ...ions allow the user to manage the click event interval Time zone Possible to change the displayed time to current local time through the time zone selection in the time zone screen 3 2 Start up and shut down To start the PED press and hold the button for a few seconds until the status bar shows 100 as shown below left During the start up the screen shows the assigned user assuming there are no ala...

Page 15: ...hat the time for screensaver activation is as short as practical Long periods of screen activity reduce the life of the screen and deplete the battery quickly Attention Long periods of screen activity reduce the lifetime of the screen Settings menu Opens the settings menu Exit menu Return to dose readings screen Discrete mode if enabled in DoseVision Disables the audible and visual warnings of ala...

Page 16: ...and date stored on the PED Language Sets the locale of the displayed text Activity sounder If enabled the PED produces approximately 12 audible clicks for a typical background radiation of around 12 counts per minute You can configure the number of audible clicks for the radioactive particle detected For example selecting divide by one 1 generates an audible click for each radioactive particle det...

Page 17: ... 5 Working with tasks Start a task on the Main menu Tasks When a task is running the current accumulated dose value since the task started is shown on the top bar of the readings screen alternating with the top bar information as shown below The current tasks are highlighted by a green light A trefoil stop watch icon shows completed tasks Current and completed task details may be viewed by selecti...

Page 18: ...w is facing forwards or in the direction of the area being measured 3 View the readings screen that shows the following Handheld mode icon Indicates that PED is in the handheld mode Peak dose rate Peak dose rate experienced since the PED was last reset using DoseVision Dose rate bar graph Bar graph representing the current dose rate Dose rate reading Current dose rate measurement The measurement i...

Page 19: ...ritical error messages in the status bar of the readings screen status bar 3 9 1 Non critical warnings Non critical warning messages require action but will still operate correctly The image below shows a PED with the non critical warning Calibration Due The table below details possible warning message and the appropriate actions to take Non critical warning Description Action Battery low The rema...

Page 20: ...tion alarm sound is shorter and less frequent beep than the radiation alarm beeps Dose last reading The dose rate area of the readings screen is replaced with a white cross on a red square background as shown below and the error stated The label Stay Time is replaced with the label Last Reading to indicate that displayed dose is the last dose reading before the critical malfunction occurred The im...

Page 21: ...that the PED time corresponds to the computer time running DoseVision Detector failure If no counts are recorded over 2 minutes standard range or 8 minutes extended range the PED assumes that the GM tube has failed Also for the extended range only after 4 minutes the dose rate reading flashes to indicate low background and warn of a possible failure of the GM tube Return the PED to Tracerco if nor...

Page 22: ...Warning The PED IS must never be used in a hazardous area whilst connected via USB as this would violate the certification and may create an unsafe situation PEDs are charged using a charger dock or directly using a micro USB connection The charger dock has a micro USB connection that allows charging from a mains supply 12Vdc car supply or a computer through a USB port Tracerco recommends that onl...

Page 23: ...ive cloth water and a mild detergent The soft polymer over mould that has been manufactured from materials with excellent chemical resistance and the screen is manufactured from a tough polymer Caution The screen of the PED IS has an antistatic coating to prevent the build up of a static charge Care must be taken when cleaning so that the antistatic coating is not removed To avoid damaging the ant...

Page 24: ...r this feature is disabled by default on PEDs except the PED IS The next calibration due date can be found in the monitor details screen if the feature is enabled Calibration contact details are also contained here All Tracerco PEDs are checked and calibrated immediately prior to dispatch and the next calibration due date is set in the PED 4 6 PED IS repairs Attention Repair of a PED IS must be ca...

Page 25: ...MN1010 Rev G 25 of 25 ...

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