March 2005 International Medcom How to Use the Inspector

March 2005International Medcom This presentation is intended to give the user a brief overview of how to operate the Inspector. For a complete understanding of this instrument please refer to the operating manual.

March 2005International Medcom What the Inspector Does The Inspector measures the rate of the following types of nuclear radiation The Inspector measures the rate of the following types of nuclear radiation Alpha Alpha Beta Beta Gamma Gamma X-radiation X-radiation The Inspector measures the amount of nuclear radiation in The Inspector measures the amount of nuclear radiation in Counts per minute (CPM) Counts per minute (CPM) Counts per second (CPS) Counts per second (CPS) MilliRoentgens per hour (mR/hr) MilliRoentgens per hour (mR/hr) MicroSeiverts per hour MicroSeiverts per hour (µSv/hr) (µSv/hr)

March 2005International Medcom How to Turn On the Inspector Turn the Inspector on by moving the lower switch from to or. Turn the Inspector on by moving the lower switch from Off to On or Audio. --The Inspector is measuring radiation but there is no audio. On--The Inspector is measuring radiation but there is no audio. --The Inspector is measuring radiation, and beeping with each count of radiation that is detected. Audio--The Inspector is measuring radiation, and beeping with each count of radiation that is detected. When the Inspector is first turned on it does a 3 second system check, displaying all the indicators and numbers. When the 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 Inspector shows the current level of nuclear radiation. After the system check is finished the Inspector shows the current level of nuclear radiation. The Inspector updates its visual display once every three seconds. The Inspector updates its visual display once every three seconds.

March 2005International Medcom How to Select the Operating Mode Move the upper switch to Move the upper switch to Total/Timer (counts per minute or counts per second) CPM/CPS (counts per minute or counts per second) or (milliRoentgen per hour or microSeivert per hour). mR/hr or µSv/hr (milliRoentgen per hour or microSeivert per hour). In mode the Inspector starts totaling the counts it registers, and the numeric display is updated each time a count is registered. In Total mode the Inspector starts totaling the counts it registers, and the numeric display is updated each time a count is registered. The mode is the easiest to understand for the layperson. The CPM mode is the easiest to understand for the layperson.

March 2005International Medcom How to Switch the Mode To switch the mode from to and from to : To switch the mode from mR/hr to µSv/hr and from CPM to CPS: Turn the Inspector off. Turn the Inspector off. Hold down the button on the end panel while turning the Inspector on. Hold down the + button on the end panel while turning the Inspector on. Scroll through the numbers on the screen until you get to. Scroll through the numbers on the screen until you get to 2. Press the button on the end panel. Press the CAL button on the end panel. Use the or button on the end panel to toggle between settings. Use the + or - button on the end panel to toggle between settings.

March 2005International Medcom What is Background Count? The background count is the normal level of nuclear radiation that is occurring at a given time and place. 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: Some sources of background radiation are: The sun The sun Minerals in the earth Minerals in the earth Residual radiation from nuclear testing and other man made sources 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. 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. 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.

March 2005International Medcom How to Determine the Average Background Count Turn the Inspector, and put it in Total mode. Turn the Inspector On, and put it in Total mode. Set the switch on the end panel to. Set the Timer switch on the end panel to Set. Press the button until the display reads 00:10 (this means ten minutes). Press the + button until the display reads 00:10 (this means ten minutes). Set the switch to. The Inspector beeps three times and starts counting. 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. 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. Divide this number by ten for the average count per minute which is the average background count per minute.

March 2005International Medcom How to Change the Battery Turn the Inspector over. Turn the Inspector over. Remove the battery cover. Remove the battery cover. Detach the 9 volt battery from the wire connector and replace. Detach the 9 volt battery from the wire connector and replace. The battery life for the Inspector is approximately 200 hours. The battery life for the Inspector is approximately 200 hours.