How_to_Use_the_palmRAD_907907訓(xùn)練簡(jiǎn)報(bào).ppt

1、March 2006,Berkeley Nucleonics Corporation ,How to Use the palmRAD 907,March 2006,Berkeley Nucleonics Corporation ,This presentation is intended to give the user a brief overview of how to operate the palmRAD 907. For a complete understanding of this instrument please refer to the operating manual.,

2、March 2006,Berkeley Nucleonics Corporation ,What the palmRAD 907 Does,The palmRAD 907 measures the rate of the following types of nuclear radiation Alpha Beta Gamma X-radiation The palmRAD 907 measures the amount of nuclear radiation in Counts per minute (CPM) Counts per second (CPS) MilliRoentgens

3、per hour (mR/hr) MicroSeiverts per hour (Sv/hr),March 2006,Berkeley Nucleonics Corporation ,How to Turn On the palmRAD 907,Turn the palmRAD 907 on by moving the lower switch from Off to On or Audio. On-The palmRAD 907 is measuring radiation but there is no audio. Audio-The palmRAD 907 is measuring r

4、adiation, and beeping with each count of radiation that is detected. When the palmRAD 907 is first turned on it does a 3 second system check, displaying all the indicators and numbers. After the system check is finished the palmRAD 907 shows the current level of nuclear radiation. The palmRAD 907 up

5、dates its visual display once every three seconds.,March 2006,Berkeley Nucleonics Corporation ,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 Sv/hr (milliRoentgen per hour or microSeivert per hour). In Total mode the pa

6、lmRAD 907 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.,March 2006,Berkeley Nucleonics Corporation ,How to Switch the Mode,To switch the mode from mR/hr to Sv/hr and from CPM t

7、o CPS: Turn the palmRAD 907 off. Hold down the + button on the end panel while turning the palmRAD 907 on. Scroll through the numbers on the screen until you get to 2. Press the SET button on the end panel. Use the + or - button on the end panel to toggle between settings.,March 2006,Berkeley Nucleo

8、nics Corporation ,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 ra

9、diation is a naturally occurring phenomenon. When the palmRAD 907 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.,March 200

10、6,Berkeley Nucleonics Corporation ,How to Determine the Average Background Count,Turn the palmRAD 907 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 palmRAD 907 bee

11、ps three times and starts counting. At the end of the ten minutes, the palmRAD 907 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.,March 2006,Berkeley Nucleonics Corporation ,How to Change the Battery,Turn