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Radalert 100

Nuclear Radiation Monitor

Operating Manual

Содержание Radalert 100

Страница 1: ...Radalert 100 Nuclear Radiation Monitor Operating Manual...

Страница 3: ...onse Times 8 Using the Alert 10 The Utility Menu 11 Interfacing to an External Device 12 4 Common Procedures 13 Establishing the Background Count 13 Environmental Area Monitoring 13 Checking an Object...

Страница 4: ......

Страница 5: ...of radioactivity Connect the Radalert 100 to a computer or data logger to record and tabulate your data This manual gives complete instructions for using the Radalert 100 and procedures for common app...

Страница 6: ...Switch 6 On Off Audio Switch 1 Count Light 2 Calibration Input Port 3 Audio Data Output Port 7 and Set Buttons 8 Alpha Window Set The Radalert 100 counts ionizing events and displays the results on t...

Страница 7: ...display to indicate low battery voltage A radiation symbol C appears when the Alert feature is on An hourglass D appears to the left of the numeric display during a timed count TOTAL E appears when th...

Страница 8: ...1 to 1100 CPM CPS The LCD shows the current radiation level in counts per minute from 0 to 350 000 or when SI units are used in counts per second from 0 to 3 500 When X1000 is shown multiply the numer...

Страница 9: ...energy beta and gamma radiation to penetrate the mica end of the tube CAUTION The mica end surface of the Geiger tube is fragile Be careful not to let anything penetrate the screen The Ports There are...

Страница 10: ...battery wires along the side of the battery and not under it To start the Radalert 100 set the top switch to the mode you want and set the bottom switch to On or Audio The Radalert 100 then does a fo...

Страница 11: ...hours A timed total count is useful for determining the average counts per minute over a period of time The number of counts detected by the Radalert 100 varies from minute to minute due to the rando...

Страница 12: ...es and repeats the beeping several times The number displayed is the total count 5 To find the average dose rate for the timed period divide the total by the number of minutes The average count is in...

Страница 13: ...ses or the Radalert 100 is turned off Display update and response time In Total mode the numeric display is updated each second In the dose rate modes the numeric display is updated every three second...

Страница 14: ...use the and buttons to adjust the level up or down 3 When the desired alert level is displayed press the Set button again to save the new level and to continue in Alert mode the SET icon is no longer...

Страница 15: ...n option push the Set button Use the and buttons to toggle between choices and press the Set button again to enter the chosen value To exit the Utility Menu at any time select option 0 The Radalert 10...

Страница 16: ...se 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 output The ring si...

Страница 17: ...o get a ten minute average A ten minute average is moderately accurate You can repeat it several times and see how close the averages are To establish a more accurate average take a one hour count In...

Страница 18: ...e is as close as possible to the object The best position is with the top right corner of the back of the Radalert 100 closest to the object Alpha Window Geiger Tube Position of Geiger tube To measure...

Страница 19: ...or referenced to Cs 137 CAUTION In calibration mode the smallest increment that can be adjusted is 001 which prevents fine adjustment of the calibration factor Thus errors can occur if you use a low l...

Страница 20: ...be When the reading is correct press the Set button The new calibration factor is automatically calculated from the adjustment you make 5 The new calibration factor is displayed for several seconds th...

Страница 21: ...e input frequency 4 Start with the Radalert 100 turned off and the Mode switch set to mR hr Hold down the button on the end panel while you turn the On Off Audio switch to On Don t use the Audio setti...

Страница 22: ...o not leave the Radalert 100 in temperatures over 122 F 50 C or in direct sunlight for extended periods of time Do not get the Radalert 100 wet Water can damage the circuitry and the coating of the mi...

Страница 23: ...CD if count light and audio work the LCD may need to be replaced Display works but no counts are registered damaged Geiger tube if mica surface of the tube has wrinkles or visible breaks it needs to b...

Страница 24: ...ectro magnetic field move the instrument away from possible sources of electromagnetic or radio frequency radiation If the Radalert 100 requires servicing please contact your distributor or the manufa...

Страница 25: ...on reaches the Earth Natural sources of ionizing radiation also exist in the ground The most common of these are uranium and its decay products Ionizing radiation is categorized into four types X rays...

Страница 26: ...ype of atom Radioactive substances may go through several stages of decay before they change into a stable or non radioactive form An element may have several forms or isotopes A radioactive form of a...

Страница 27: ...0 Polonium Po 210 alpha 138 days Pb 206 Lead Measuring Radiation Alpha beta gamma and x rays ionize material they strike or pass through The amount of radiation is generally determined by measuring th...

Страница 28: ...of irradiated material This is approximately equal to 1 07 roentgen A rem is the dosage received from exposure to a rad It is the number of rads multiplied by the quality factor of the particular sou...

Страница 29: ...level on the ground When monitoring radiation levels in one location it is useful to determine the highest reading you can normally expect to see in that location If you use Alert mode you want to set...

Страница 30: ...1000 CPM mR hr referenced to Cs 137 Accuracy 10 typical 15 max mR hr and Sv hr modes Alert Range mR hr 0 to 50 CPM 0 to 160 000 Beeper sounds the alert Count light Red LED flashes with each count Bee...

Страница 31: ...nge 20 to 50 C 4 to 122 F Power One 9 volt alkaline battery battery life is average 2160 hours at normal background average 625 hours at 1mR hr with beeper off Size 150 x 80 x 30 mm 5 9 x 3 2 x 1 2 We...

Страница 32: ...een subjected to misuse abuse or neglect Modification or repair of this instrument by anyone other than International Medcom voids this warranty International Medcom is not responsible for incidental...