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DMC 2000S Dosimeter

15-00007 Page 57 of 65

11. Maintenance

11.1

Changing the battery

To change the dosimeter Renata battery, follow the steps below.

Using the tool provided (or if unavailable, using a screwdriver), unscrew

(counterclockwise) the battery cover shown below:

•

Remove the battery cover and remove the battery

battery cover

Summary of Contents for DMC 2000 S

Page 1: ...Document 15 00007 Revision 1 May 2001 DMC 2000S DMC 2000S Electronic Dosimeter User s Manual...

Page 2: ...upon MGPSA document 115170AA Revised for new firmware version of DMC 2000 Moved SAT to the end of section 5 3 2 Moved Dosimeter Serial number to the beginning of section 5 3 2 Added Watch Clock funct...

Page 3: ...urements and alarms 12 4 Start up 13 4 1 Satellite mode 13 4 2 Autonomous mode 13 5 Operation in the satellite mode 14 5 1 Switching to measurement mode 14 5 2 Operation in the measurement mode 14 5 2...

Page 4: ...difiable parameters 41 8 4 Modifying parameters 45 8 4 1 Accessing the modification mode 45 8 4 2 Procedures for modifying parameters 46 8 4 3 Example for setting parameters 47 9 Other functions 50 9...

Page 5: ...0S Dosimeter 15 00007 Page 5 of 65 12 6 Link to LDM 2000 reader 62 12 7 Storage 62 13 Replacement parts 63 14 Appendix 1 64 connector for teledosimetry alarm transmission or external probe 64 15 Gloss...

Page 6: ...ing dosimeters Configuring dosimeters Pass by readers For some uses of the DMC 2000S dosimetry system and teledosimetry applications additional equipment is required MGPAC LDM WRM For further informat...

Page 7: ...rt up and historical functions Fault analysis of the DMC 2000S This section lists possible faults as well as providing a troubleshooting guide This section does not describe procedures to follow in th...

Page 8: ...These symbols are used for descriptions and lists The symbol corresponds to the first level of a list The symbol corresponds to the second level of a list For legibility reasons these symbols are alig...

Page 9: ...1 1 Autonomous mode This mode allows the DMC 2000S to operate individually or independently without any other equipment 2 1 2 Satellite mode This mode allows the DMC 2000S to be used as a part of a d...

Page 10: ...time spent in area displays the dose alarms and messages relating to detected faults manages the alarms and pre alarms manages the internally stored HISTOGRAM signals audibly under alarm conditions p...

Page 11: ...00007 Page 11 of 65 3 Description 3 1 Front view 3 2 Back view indicator light display selector button ISO connector for the CTM 2000 MUX 2000 AM 16 DDC 16 and PEA 20000 pocket clip battery cover spe...

Page 12: ...e example shown below the display indicates a dose alarm i e the alarm threshold programmed into the dosimeter for the dose equivalent has been exceeded the indicator light flashes the Dose Alarm indi...

Page 13: ...rned on for normal operation 4 1Satellite mode In a centralized dosimetry system a server computer performs the start up procedure via an LDM 2000 reader 4 2Autonomous mode For use in the autonomous m...

Page 14: ...value is continuously displayed in the appropriate units as selected during dosimeter configuration 5 2 Operation in the measurement mode 5 2 1 Displaying the dose equivalent measurement When in the m...

Page 15: ...e selector button displays the dose rate value for 30 seconds The unit format fixed or floating point and display resolution are selected during dosimeter configuration After 30 seconds the dose equiv...

Page 16: ...tings for the alarm and pre alarm thresholds can be viewed in the measurement mode by holding the selector button To display the thresholds press and hold the selector button continuously for at least...

Page 17: ...m h 9 90 10 1 mRem h 5 2 6 3 Time alarm threshold display This value corresponds to the length of time alarm threshold shown here 94 hours 5 2 6 4 Dose pre alarm warning threshold display This value c...

Page 18: ...try system switching to the pause mode is accomplished when passing by an LDM 2000 access control monitor When switched to the pause mode the display reads as shown below the functional indicators fla...

Page 19: ...d on page 10 The display shows the message PAUSE or affect or wearer s name is depending on whether or not it is assigned non assigned dosimeter assigned dosimeter In the event of a fault additional a...

Page 20: ...ata on the display after 5 seconds without pressing reverts to normal display in the pause mode The following data is displayed in succession by pressing the selector button 5 3 2 1 Dosimeter number d...

Page 21: ...of the rate corresponds to 208 mRem h 2 08 102 mRem h 5 3 2 4 Time display This data corresponds to the duration of the last time period in the measurement mode 5 3 2 5 Dose alarm threshold display T...

Page 22: ...ours 5 3 2 8 Dose pre alarm warning threshold display This value corresponds to the pre alarm threshold of the dose equivalent for the main measurement shown here 1 mRem 5 3 2 9 Rate pre alarm warning...

Page 23: ...ng mode display The message Sat indicates that the dosimeter is configured for Satellite Mode i e for use in a centralized dosimetry system 5 3 2 12 Optional external probe number display This value c...

Page 24: ...flashing colon on the display indicates the dosimeter is functioning the following message is displayed when the selector button is pressed after approximately 3 seconds the following message is disp...

Page 25: ...ode 6 2 1 Displaying the dose equivalent measurement When in the measurement mode the DMC 2000S dosimeter continuously measures the Hp 10 dose equivalent as well as performing other operations see sec...

Page 26: ...floating point and display resolution are selected during dosimeter configuration After this 30 seconds the dose equivalent value is then displayed again Note The DMC 2000S may be configured to displa...

Page 27: ...beginning on page 51 which includes a troubleshooting guide 6 2 6 Viewing alarm thresholds Settings for the alarm and pre alarm thresholds can be viewed in the measurement mode by using the selector b...

Page 28: ...the value of the rate corresponds to 5 92 mRem 5 92 100 mRem 6 2 6 2 Rate alarm threshold display This value corresponds to the alarm threshold of the dose rate for the main measurement The display is...

Page 29: ...de when using the DMC 2000S in the autonomous mode press the selector button and follow the procedure listed below The selector button should be held pressed in for approximately 10 seconds The follow...

Page 30: ...wearer depending on the dosimeter configuration 6 4 Operation in the pause mode 6 4 1 Normal display When the DMC 2000S dosimeter is in the pause mode it continuously performs the operations described...

Page 31: ...10 beginning on page 51 which includes a troubleshooting guide 6 4 2 Operation of the selector button When in the autonomous mode the following operations can be performed by using the selector button...

Page 32: ...ollowing data is displayed in succession by pressing the selector button 6 4 2 1 Dosimeter activation This message indicates that the dosimeter can now be activated see section Modifying parameters pa...

Page 33: ...the cumulative dose equivalent for the main measurement during the last time period in the measurement mode since the last dose was reset to zero which is normally performed upon area entry depending...

Page 34: ...C 2000 dosimeters with firmware version 2 6 or higher 6 4 2 8 Dose alarm threshold display This value corresponds to the alarm threshold of the dose equivalent for the main measurement shown here 5 92...

Page 35: ...increments BEEP 1 1 beep every 10 mRem 100 Sv BEEP 2 1 beep every 1 mRem 10 Sv BEEP 3 1 beep every 0 1 mRem 1 Sv BEEP 4 1 beep every 8 pulses 1 beep sec per approx 26 7 mRem or 267 Sv BEEP 5 1 beep e...

Page 36: ...external probe number display This value corresponds to the identification number specific to the optional extremity probe if the external extremity probe is connected The message FFFFFF indicates th...

Page 37: ...event of simultaneous alarms all corresponding messages and symbols are displayed The audible alarms and alarm displays can be disabled when configuring the DMC 2000S this function can be configured a...

Page 38: ...ate and the warning symbol flash The dose is still displayed see below acknowledgment this silences the alarm but does not change the display To acknowledge the dose pre alarm press and hold the selec...

Page 39: ...ceeded audible alarm see below 1s On 50 ms Off 150 ms display the message Dose Alarm flashes The dose is still displayed see below Note the dose alarm cannot be silenced via acknowledgement 7 1 4 Dose...

Page 40: ...enced via acknowledgement in the standard configuration the dose rate alarm is suppressed by setting the alarm threshold to the measurement range s high value 7 1 5 Time alarm cause alarm threshold ex...

Page 41: ...accomplished while the dosimeter is in the pause mode 8 3 Modifiable parameters The parameters which can be modified are described below in the order in which they appear on the display when the sele...

Page 42: ...te with an LDM 101 or LDM 2000 and the appropriate software and autonomous modes This parameter corresponds to the dose rate value above which an alarm will be triggered This value can be set from 1 0...

Page 43: ...s be lower than the dose equivalent alarm threshold If this value is set to 0 0 00 100 the dose pre alarm will not be triggered 8 3 1 6 Rate pre alarm warning threshold modifiable in both the satellit...

Page 44: ...y 8 pulses 1 beep sec per approx 26 7 mRem or 267 Sv BEEP 5 1 beep every 4 pulses 1 beep sec per approx 13 3 mRem or 133 Sv 8 3 1 8 Emergency start up operating mode modifiable in both the satellite w...

Page 45: ...tware 8 4 1 Accessing the modification mode This is accomplished by following the procedure described below Begin in the pause mode Press and release the selector button once and the display changes t...

Page 46: ...ee steps in setting parameters 8 4 2 1 Step P The flashing P displayed to the left of the functional indicators identifies this step It allows all modifiable parameters to be accessed pressing and rel...

Page 47: ...itches back to the pause mode after 10 seconds of inactivity on the selector button 8 4 3 Example for setting parameters access the modification mode as described in the section Accessing the modifica...

Page 48: ...d the selector button until the flashing d is displayed access the other digits you want to change by pressing and releasing the selector button in the example shown the selector button must be presse...

Page 49: ...displayed modifying other parameters press and release the selector button to access the next parameter to be modified repeat the steps as described above for the dose alarm parameter return to the p...

Page 50: ...ed the following message is continuously displayed Simply pressing once on the selector button immediately switches the DMC 2000S dosimeter to the measurement mode The following message is displayed b...

Page 51: ...eter s configuration recording and dating of significant events such as alarms pre alarms acknowledgment of pre alarms assignment and storage of identifier code task code change in operating mode paus...

Page 52: ...the measurement mode is 10 hours 3 audible pulses every 10 minutes 10 min 1s 10 min 1s display if the dosimeter is in the measurement mode the message BA LOX alternates on the display with the normal...

Page 53: ...ulses cease and the display goes blank However all data parameters dose operating time histogram etc is saved in the E2PROM memory and can be accessed once the battery is replaced corrective action ch...

Page 54: ...lay reads DF CAL corrective action re calibrate the dosimeter 10 1 4 1 1 Calibration Mode The Calibration mode is for factory calibration and will not accumulate dose with ionizing radiation in this m...

Page 55: ...most likely cause physical internal problem related to the dosimeter s detection circuit 2 audible pulses every second only if the dosimeter is in the measurement mode 1s 1s 1s display the display re...

Page 56: ...fault persists return the dosimeter to MGP Instruments 10 1 7 Initialization fault most likely cause dosimeter data integrity problem display the display reads DF INT corrective action re initialize t...

Page 57: ...Changing the battery To change the dosimeter Renata battery follow the steps below Using the tool provided or if unavailable using a screwdriver unscrew counterclockwise the battery cover shown below...

Page 58: ...rt a new Renata battery in the housing with the side of the battery placed towards the back of the dosimeter replace clockwise the battery cover back on using the key When the battery is removed the d...

Page 59: ...isplay range dose equivalent 0 1 mRem to 100 Rem 10 6 to 10 Sv dose rate 1 mRem hr to 100 Rem hr 10 5 to 10 Sv h measurement error dose equivalent better than 20 over the entire measurement range dose...

Page 60: ...20 0 15 30 45 60 75 90 105 120 135 150 165 180 195 210 225 240 255 270 285 300 315 330 345 vertical horizontal antenna side selector button side battery side response as a function of exposure rate of...

Page 61: ...m can be acknowledged acknowledgment is accomplished by pressing and holding the selector button for at least 3 seconds checks periodic detector tests every 10 min data integrity test periodic battery...

Page 62: ...ge temperature 31 C to 71 C without battery 12 6Link to LDM 2000 reader Pass by data exchange for activation deactivation in motion data acquisition reading and writing of parameters normal range of 1...

Page 63: ...rdered from MGP Instruments For special orders or for parts not listed below contact MGP Instruments Customer service department Name MGP Instruments Reference number battery D20 2000 battery cover wi...

Page 64: ...l probe a wired area monitor hub This appendix describes the various functions of the connector s inputs outputs The functions of the various inputs outputs of the connector depend on the dosimeter s...

Page 65: ...dic checks and activates alarms when applicable The pass by data exchange function is active Pass by data exchange function this function allows the DMC 2000S dosimeter to communicate with the LDM 200...

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