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How to Use the IMI Inspector - PowerPoint PPT Presentation


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How to Use the IMI Inspector. This presentation is intended to give the user a brief overview of how to operate the IMI Inspector . For a complete understanding of this instrument please refer to the operating manual. What the IMI Inspector Does.

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how to use the imi inspector

How to Use the IMI Inspector

International Medcom 707-823-0336

www.medcom.com

slide2

This presentation is intended to give the user a brief overview of how to operate the IMI Inspector. For a complete understanding of this instrument please refer to the operating manual.

International Medcom 707-823-0336

www.medcom.com

what the imi inspector does
What the IMI Inspector Does
  • The IMI Inspector measures the rate of the following types of nuclear radiation
    • Alpha
    • Beta
    • Gamma
    • X-radiation
  • The IMI Inspector measures the amount of nuclear radiation in
    • Counts per minute (CPM)
    • Counts per second (CPS)
    • MilliRoentgens per hour (mR/hr)
    • MicroSeiverts per hour
    • (µSv/hr)

International Medcom 707-823-0336

www.medcom.com

how to turn on the imi inspector
How to Turn On the IMI Inspector
  • Turn the IMI Inspector on by moving the lower switch from Off to On or Audio.
    • On--The IMI Inspector is measuring radiation but there is no audio.
    • Audio--The IMI Inspector is measuring radiation, and beeping with each count of radiation that is detected.
  • When the IMI Inspector is first turned on it does a 3 second system check, displaying all the indicators and numbers.
  • After the system check is finished the IMI Inspector shows the current level of nuclear radiation.
  • The IMI Inspector updates its visual display once every three seconds.

International Medcom 707-823-0336

www.medcom.com

how to select the operating mode
How to Select the Operating Mode
  • Move the upper switch to
    • Total/Timer
    • CPM/CPS (counts per minute or counts per second)
    • mR/hr or µSv/hr(milliRoentgen per hour or microSeivert per hour).
  • In Total mode the Inspector starts totaling the counts it registers, and the numeric display is updated each time a count is registered.
  • The CPM mode is the easiest to understand for the layperson.

International Medcom 707-823-0336

www.medcom.com

how to switch the mode
How to Switch the Mode
  • To switch the mode from mR/hr to µSv/hr and from CPM to CPS:
    • Turn the Inspector off.
    • Hold down the + button on the end panel while turning the IMI Inspector on.
    • Scroll through the numbers on the screen until you get to 2.
    • Press the CAL button on the end panel.
    • Use the + or - button on the end panel to toggle between settings.

International Medcom 707-823-0336

www.medcom.com

what is background count
What is Background Count?
  • The background count is the normal level of nuclear radiation that is occurring at a given time and place.
  • Some sources of background radiation are:
    • The sun
    • Minerals in the earth
    • Residual radiation from nuclear testing and other man made sources
  • Nuclear radiation is a naturally occurring phenomenon. When the Inspector is on it is normally measuring the background count.
  • A user should determine the normal background count in case abnormal levels of nuclear radiation occur.

The mesh screen covers the end window of the Geiger-Mueller sensor.

International Medcom 707-823-0336

www.medcom.com

how to determine the average background count
How to Determine the Average Background Count
  • Turn the Inspector On, and put it in Total mode.
  • Set the Timer switch on the end panel to Set.
  • Press the + button until the display reads 00:10 (this means ten minutes).
  • Set the Timer switch to On. The Inspector beeps three times and starts counting.
  • At the end of the ten minutes, the Inspector beeps three times, and repeats beeping several times. Note the total reading.
  • Divide this number by ten for the average count per minute which is the average background count per minute.

International Medcom 707-823-0336

www.medcom.com

how to change the battery
How to Change the Battery
  • Turn the Inspector over.
  • Remove the battery cover.
  • Detach the 9 volt battery from the wire connector and replace.
  • The battery life for the IMI Inspector is approximately 200 hours.

International Medcom 707-823-0336

www.medcom.com