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Nuclear Radiation Monitor

Operation Manual

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Содержание Digilert 100

Страница 1: ...3 06 Nuclear Radiation Monitor Operation Manual...

Страница 2: ...Response Times 6 Taking a Timed Total Count 7 Using the Alert 8 The Utility Menu 9 Interfacing to an External Device 10 4 Common Procedures 10 Establishing the Background Count 11 Environmental Area M...

Страница 3: ...eriods of time Do not get the Digilert 100 wet Water can damage the circuitry and the coating of the mica surface of the Geiger tube Avoid making measurements with the detector window in direct sunlig...

Страница 4: ...ommon applications How the Digilert 100 Detects Radiation The Digilert 100 uses a Geiger Mueller tube to detect radiation The Geiger tube generates a pulse of electrical current each time radiation pa...

Страница 5: ...ng the current function and the battery condition The numeric display A shows the current radiation level in the unit specified by the mode switch setting A small battery B appears to the left of the...

Страница 6: ...g instead of the current radiation level The current unit of measurement I CPM CPS mR hr or Sv hr is displayed to the right of the numeric display MENU J appears when you are in the Utility Menu The S...

Страница 7: ...to set the alert select items in the Utility Menu and set the Calibration settings See Using the Alert and Utility Menu in Chapter 3 and Calibration in Chapter 5 and Buttons Figure 2 5 The and buttons...

Страница 8: ...and for users of SI units microsieverts per hour and counts per second To switch between conventional and SI units use the Utility Menu See The Utility Menu in this chapter Starting the Digilert 100...

Страница 9: ...0 s reading in mR hr may not be accurate The most immediate indicators of the radiation level are the count light the audio beep and the alert It takes three seconds before an increase is shown on the...

Страница 10: ...or 1 mR hr 3 seconds Note You can set the response time to 3 seconds at all radiation levels using the Utility Menu see The Utility Menu in this chapter Taking a Timed Total Count The Digilert 100 ca...

Страница 11: ...tes remain 4 At the end of the timed period the Digilert 100 beeps three times and repeats the beeping several times The number displayed is the total count 5 To find the average dose rate for the tim...

Страница 12: ...how the MENU icon Release the button and a 1 indicating option 1 will appear along with the Menu icon 2 Scroll through the menu by pushing the or buttons 3 To select an option push the Set button and...

Страница 13: ...ide a positive pulse 9 volt peak 1 Kohm impedance each time the Geiger tube detects a count At the tip of the plug the pulse is approximately 1mS wide and is well suited for chart recorders and audio...

Страница 14: ...nd look at it from time to time to check for elevated readings You can also use Alert mode to warn you if the radiation increases above the alert level If you suspect an increase in ambient radiation...

Страница 15: ...ration The Digilert 100 should be calibrated as often as your regulations require The best way to calibrate is using a calibrated source If no source is available it is possible to calibrate electroni...

Страница 16: ...e Digilert 100 collects data for 60 seconds beeping as it does so with CAL and the hourglass indicator flashing At the end of the 60 seconds it beeps several times The display shows CAL and SET You ca...

Страница 17: ...ws appropriate pulse generator count rates to calibrate for Cs137 If the accuracy is not within desired limits follow steps 5 7 Note that the Digilert 100 automatically compensates for lost counts due...

Страница 18: ...e LCD work the LCD may need to be replaced Display works but no defective Geiger tube look through the window to counts are registered check the mica surface of the tube if it is wrinkled or a break i...

Страница 19: ...Digilert 100 requires servicing please contact your distributor or the manufacturer at the following address Do not attempt to repair the Digilert 100 it contains no user serviceable parts and you co...

Страница 20: ...f a centimeter They are also called photons The energy of X rays is millions of times greater than that of light and radio waves Because of this high energy level X rays penetrate a variety of materia...

Страница 21: ...n passes through the chamber and ionizes the gas it generates a pulse of current The Digilert 100 electronically processes these pulses to display the radiation level Radiation Measurement Units Sever...

Страница 22: ...t locations can vary greatly due to soil composition altitude and other factors For example normal background at 10 000 feet might be double that at sea level On an airplane the radiation at 35 000 to...

Страница 23: ...mR hr 0 to 50 Beeper sounds the alert CPM 0 to 160 000 Count light Red LED flashes with each count Beeper Operational in Audio mode only can be muted Ports Dual miniature jack sends counts to CMOS com...

Страница 24: ...air proof and watertight case while still providing you with access to your Inspector for data regardless of the conditions Gamma detection only Easily use The Inspector through recessed clear plastic...

Страница 25: ...and perform statistical analysis on the data received The data is displayed on a graph as well as digital and analog on screen meters and can be saved or printed in various ways including a spreadshee...

Страница 26: ...g the details below UK Office Keison Products P O Box 2124 Chelmsford Essex CM1 3UP England Tel 44 0 330 088 0560 Fax 44 0 1245 808399 Email sales keison co uk Please note Product designs and specific...

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