User`s Manual - Fresh Water Systems
Contents
1. default display 1 Changes to Dose Rate Display 2 Returns to Dose Display Deactivating the DMC 2000 from Run to Pause Mode Step Action 1 Display reads 3 Release Button Display changes to 4 Dosimeter is deactivated Pause Mode Parameter Modification NOTE Modifying parameters and set points takes practice and patience You may encounter the display returning to PAUSE during a moment of inactivity Follow the steps in this section to return to modifying the parameters Step Action Start from 2 Press button twice passing T9 5E wait a moment 5 Press button once more display is with a flashing P The flashing P indicates that the dosimeter parameters are ready to be altered There are three steps to this process each represented by a different letter A flashing P the parameter to modify can be selected A flashing d which digit of the parameter to change can be selected And a flashing I the value or increment of the selected digit can now be changed The steps for modifying alarm set points are as follows Step Action Complete the steps in the previous section until the display reads 2 Press the button repeatedly until you reach the paramete2. void any warranty LED Indicator Changing the Battery NOTE the battery on the DMC 2000S should be changed when the BA LO or DF BAT warnings are displayed Waiting until the dosimeter is completely dead can result in fault errors requiring reader hardware to clear 1 Remove the clip Using a small flat head screwdriver or similar tool gently lift up the tab at the top of the clip and slide the whole clip off the back of the dosimeter Only a slight amount of pressure is needed 2 Remove the battery cover Using either a provided battery tool or a watch case wrench or similar tool unscrew the battery cover 3 Insert a Renata CR2450N or Toshiba 2450 battery other brands have incorrect physical profiles and will cause shorts and or potential damage to the device see image A for example in the battery compartment with the positive plate down flush against the speaker See image A for example 4 Replace the battery cover tightening it to hand tight plus an additional turn with the battery tool 5 Replace the clip sliding it in the rails on the back of the dosimeter until it clicks and locks into place Presses of the Button 0 10 11 12 Display Indications in Pause Mode Display Indication Description Pau
3. DMC 2000 Series Electronic Dosimeter User s Manual Stand Alone Autonomous Operation 5000 Highlands Pkwy Suite 150 Smyrna GA 30082 770 432 2744 www mirion com Document 15 00079 Revision O Table of Contents e Introduction e Basics Parts of the Dosimeter Changing the Battery Pause Display Information e Operation Activation Deactivation Changing Alarm Set Points e Troubleshooting e Glossary of Terms e RMA Service Form WARNING DO NOT LET THE DMC BATTERY COMPLETELY DISCHARGE THE DMC WILL NOTIFY YOU WHEN THE BATTERY NEEDS CHANGING LETTING THE BATTERY COMPLETELY DISCHARGE CAN POTENTIALLY RESULT IN FAULT ERRORS REQUIRING ADDITONAL HARDWARE READER TO RESET ATTENTION USE ONLY APPROVED BATTERIES IN THE DMC 2000 see page 6 OTHER BATTERIES MAY RESULT IN DAMAGE TO THE DEVICE Parts of the Dosimeter Antenna ry MGP 7 If INSTRUMENTS for hands free DMC 2000 S communication Pushbutton Location Detector Position Notches ISO Connector for Extemal Devices Speaker Not a Reset button Do not insert pointed objects pen tip screwdriver as damage may occur Warranty Seal Serlal Number amp Bar Code Labsl Removable Clip Infra Red Ports 3 for communication Battery Cover Do not remove any of the four case screws There are no serviceable parts inside the dosimeter Removal will compromise waterproof and EMI resistant characteristics and
4. Fault in the component used for the pulse counting Red LED ON with no display Sometimes noted when installing a NEW battery Microprocessor is hung between pause and run on a low battery condition typically resulting from allowing the dosimeter battery to discharge completely OR Non authorized battery installed causing battery to short out to ground device parameters Requires additional hardware Reader to clear Contact MGPI for verification of device parameters Requires additional hardware Reader to clear Remove the battery let the dosimeter storage capacitor discharge for 72 hours and then reinstall the battery Source check if error remains dosimeter is beyond repair Contact MGPI for verification of device parameters Requires additional hardware Reader to clear Contact MGPI for verification of device parameters Requires additional hardware Reader to clear Dosimeter beyond repair and or parameters corrupted Contact MGPI for verification of device parameters May require additional hardware Reader to clear Remove battery inspect battery compartment for damage broken or damaged ground contact terminals insulator e Reset using the battery reset tool See page 12 11 Dosimeter Reset Tool Operation If the battery is not changed while in the Lo Bat mode before it is completely discharged the DMC might retain a slight charge in the superca
5. Mode Also Active mode the DMC in Run mode is actively measuring and tracking dose and dose rate The display in this mode should read Satellite Mode The DMC requires software and a reader to be turned on and off and to access or change parameters 15 Notes Customer Service Request Form For Problems with your DMC 2000 please contact Mirion Technologies for a Return Materials Authorization RMA form at 770 432 2744 Please fill out and attach the following information to the form before shipping any DMCs back for evaluation or repair Name Email Phone Company Address Please list the Serial number of each DMC that has problems along with a description of what is wrong with it Serial Description of Problem 17
6. eader Dose The total amount of radiation measured by the DMC while in Run Mode Displayed in mrem or mSv Dose Alarm Threshold The dose setpoint at which the DMC will begin to alarm The dose alarm will continue past this until the DMC is reset Dose Rate A measure of the intensity of radiation being measured by the DMC in run mode in relation to time Displayed in mrem hr or mSv hr configured at purchase or with software and reader E2prom The internal memory of the Dosimeter Histogram A history file created by the DMC during each use noting information such as dose received alarms triggered and any faults Saved to the e2prom Readable with software and reader ISO Connector The gold panel on the front of the DMC used as a connector for such peripherals ranging from a earphone to a transmitter Pause Mode A DMC in Pause Mode is effectively off as the DMC is not currently measuring or dose Unless a custom display is selected the display in this mode will read PAUSE tracking 14 Rate Alarm Threshold The dose rate setpoint at which the DMC will begin to alarm The rate alarm will last until the dose rate falls below the threshold at which point it will cease Reader Refers to any hardware reader LDM 220 LDM 210 LDM 101 LDM 2000 available from Mirion Technologies that are used to communicate with the DMC 2000 and alter settings and or retrieve a histogram Run
7. pacitor and be non responsive to a new battery If this is the case you can use the DMC reset tool provided with your purchase If you do not have the reset tool handy leaving the battery out of the DMC for 3 4 days will also sufficiently discharge the capacitor to accept a new battery First open battery compartment as indicated on page 6 and remove the battery Then remove the orange insulator Insert the reset tool with the tongue pointing into the cavity underneath the top left quadrant of the threaded battery ring between the soldered connection and the threaded ring Lever the reset tool down This should cause the tool to make contact with the appropriate part of the internal board discharging the capacitor and resetting the dosimeter 12 Remove the reset tool Replace the insulator insert a new battery and attempt to power up the device There may be error messages that require additional hardware to clear 13 Golossary of Terms Autonomous Mode The DMC is capable of being turned on and off through the use of a pushbutton also called Stand Alone Mode Battery Tool Stainless steel tool available from Mirion Technologies for removing the battery cover on the DMC 2000 Mirion part number D20 2005 Pictured Chirp Rate Setting that causes the speaker on the DMC to occasionally chirp every time it reads a set amount of radiation Default turned off can be adjusted with software and r
8. r to be adjusted 3 Hold down the button until the P changes to a d 4 Press the button repeatedly until the correct digit to be changed is selected 5 Hold down the button until the d changed to an e GFE TF 6 Press the button repeatedly until the desired value is reached 7 Hold button down until 1 changes back to P repeat steps as needed Fault Messages Wait 10 seconds for the changes to be saved DMC returns to PAUSE Troubleshooting and Maintenance Display Corrective Action Low Battery Off Defective Battery Defective History Dosimeter is in run mode and the battery is near dead The BA LO OX display indicates that there are X hours of operational use remaining between 1 and 9 hours The dosimeter is in the OFF or PAUSE mode and the battery is near dead The battery will die completely within 72 hours if the DMC remains in the PAUSE mode Dosimeter is completely without power either from a completely discharged battery a capacitor that needs to be reset or a short circuit in the power supply Problem in the integrity of the historical data This can occur after the battery has been handled removed or changed Missing bit pointer in the histogram e Change the battery before the DMC loses power completely Verify that protective insulator is installed under the batter
9. se Dosimeter is effectively off awaiting further action Change Start point for putting the DMC in Run mode Modif Start point for modifying setpoints and parameters Serial Number of the DMC Reset Indicates whether dose is reset between uses Cumulative Dose received on last use Highest Dose Rate received on last use Amount of time the DMC was last in run mode Dose alarm threshold setting Rate alarm threshold setting Displays what setting the audible chirp rate is set to Indicates whether the DMC is in autonomous mode External detector unused placeholder value NOTE PAUSE Mode in the DMC 2000 is effectively Off The Dosimeter is never meant to be completely powered down Q Off 1 chirp every 10 mrem 2 chirp every 1 mrem 3 chirp every 0 1 mrem 4 chirp every 8 counts pulses 5 chirp every 4 pulses 6 chirp every pulse NOTE DMC 2000XB and GN models have additional displays and parameters for secondary channels Activating the DMC2000 From Pause to Run Mode Step Action 1 Press Button Once Display changes from 2 3 Quickly press button once 4 Display changes to speaker beeps LED flashes 5 Dosimeter is active accumulating dose Display shows measurement Display Indications in Run Mode Presses of the Display Indication Description Button 0 Display of Dose
10. y Change the battery within 72 hours if possible Caution Allowing the battery to completely discharge may cause the microprocessor to lock resulting in a blank display and red LED to be constantly ON when installing a NEW battery or in fault states requiring additional hardware Reader to reset Change the battery Check battery ground contact wire Use the provided reset tool see explanation page 12 Contact MGPI for verification of device parameters Contact MGPI for verification of device parameters Requires additional hardware Reader to clear 10 Display Corrective Action e Contact MGPI for verification of Defective Detector Defective E2PROM Defective initialization Defective External Detector Defective Integrated Circuit Blank Display Red LED ON Loss of calibration factor data stored in e2prom Physical internal problem related to the dosimeter s detection circuit or missing incorrect parameters related to the detection algorithm Problem accessing data saved in E2PROM memory Internal detector calibration value missing or corrupted usually due to battery being allowed to discharge completely before being changed External detector calibration value missing or corrupted usually due to battery being allowed to discharge completely before being changed
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