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Summary of Contents for Sper scientific 840024
- Page 1 Digital Radiation Meter 840024 Instruction Manual...
- Page 2 Digital Radiation Meter 840024 Copyright ©2011 by Sper Scientific ALL RIGHTS RESERVED Printed in the USA The contents of this manual may not be reproduced or transmitted in any form or by any means electronic, mechanical, or other means that do not yet exist or may...
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Page 3: Table Of Contents
TABLE OF CONTENTS INTRODUCTION....CAUTION ......KEYPAD . -
Page 4: Introduction
INTRODUCTION This manual provides the necessary information for proper use and care of Sper Scientific Model 840024 Radiation Meter. We recommend reading this manual completely prior to using the instrument. It also contains valuable information about the nature of ionizing... -
Page 5: Caution
CAUTION Although housed in a high-impact case, the Geiger-Mueller tube that senses radiation is fragile and may break If the unit is dropped, exposed to high temperature (above 122°F/50° C) and/or high humidity (over 90% RH). Do not allow surface of housing to come in direct contact with radioactive contamination Do not leave meter in... -
Page 6: Keypad
KEYPAD 1. 3.5 Digit LCD display setup function button (T2) and setup function down button Power ON / OFF button (T1) and setup function up button - 6 -... -
Page 7: Operating Procedures
OPERATING PROCEDURES 1. Press the button. The meter performs a system check and displays all indicators for approximately two seconds together with a Beep signal. When in use, the instrument will emit a “chirping” sound that increases in rate according to the radiation intensity. 2. -
Page 8: Meter Setup
METER SETUP 1. To change the factory set alarm level of 0.5 μSv/h press and release button. “ALA” appears in the display followed by the alarm set point. Press the arrows to change the alarm point anywhere in the range of 0 ~ 199.9 μSv/hr. It is only necessary to set the alarm in range. - Page 9 METER SETUP 1. the Auto Off function). Once selection is made press and release button. 3. To cancel or restore audible chirping press and release the button. The current setting will be displayed (either “ON” or “OFF”). Press the arrows to change the setting.
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Page 10: Establishing Background Levels
ESTABLISHING BACKGROUND LEVEL There is always naturally occurring radiation around us, which is categorized as background radiation. The radiation levels vary at different locations and at different altitudes. To attain the highest degree of accuracy from this instrument a background reading should be established for each location being monitored. -
Page 11: Area Monitoring
AREA MONITORING 1. Establish background level as described above 2. Press the button 3. Select measurement scale: 4. Take a reading by holding the meter in hand or placing it in a convenient location. The meter will display an updated reading once every second. Allow at least one minute for readings to stabilize 5. -
Page 12: Check Surface Contamination
CHECKING FOR SURFACE CONTAMINATION 1. Establish background level (p.11) 2. Press the button 3. Select measurement scale: 4. Place meter with the GM tube side of the housing facing the surface being monitored (see image A). This allows detection of both beta and gamma radiation. - Page 13 CHECKING FOR SURFACE CONTAMINATION 5. The meter is not sensitive to Beta radiation with the GM tube side pointed away from the source being checked (see image B). Image B - 13 -...
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Page 14: Check An Object
CHECKING AN OBJECT 1. Establish background level (p.11) 2. Press the button 3. Select measurement scale: 4. Hold the meter with the GM tube side positioned as close as possible to the object without allowing contact. If the object is radioactive, the radiation level will be highest at a close distance and will decrease proportionately as the distance from... -
Page 15: Maintenance And Calibration
Certificate of Calibration using NIST traceable standards if required by regulations. 4. For calibration or for out of warranty repair information contact: Sper Scientific Ltd. Attention: Calibration/Repair Department 7720 E. Redfield Rd., Suite #7 Scottsdale, AZ 85260 USA... - Page 16 RADIATION AND RADIOACTIVITY The following information is intended to provide an understanding of radiation and how the Model 840024 Radiation Meter detects certain types of radiation. Radiation is energy that travels in the form of particles or waves. Radioactivity is the property of some...
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Page 17: Radiation And Radioactivity
RADIATION AND RADIOACTIVITY nucleus that contains protons and neutrons. Neutrons do not have an electrical charge while protons have a positive charge. Electrons are negatively charged particles that orbit the nucleus and balance the positive electrical charge of the protons. The nucleus of the atom is held together by a delicate balance among the nuclear particles allowing the atom to remain... - Page 18 This energy is low enough to be stopped by a piece of paper therefore alpha particles can only be detected with specialized equipment. Model 840024 cannot detect alpha particles. Common Alpha Emitters Energy MeV Americium-241 5.48...
- Page 19 RADIATION AND RADIOACTIVITY Beta Particles Beta particle emission occurs when the ratio of neutrons to protons is too high. An excess neutron transforms into a proton and electron. The proton remains in the nucleus and the electron is ejected. This process causes radioactive decay of the atom.
- Page 20 RADIATION AND RADIOACTIVITY Gamma Rays and X-Rays Gamma radiation is a high energy ionizing radiation called gamma photons that are emitted from the nucleus of radioactive ions. Because of their high energy gamma rays travel at the speed of light and can travel a long distance before expending their energy.
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Page 21: Specifications
SPECIFICATIONS Display: 3.5 digit LCD with maximum reading of 1999 Measurement Range: 0.1 - 199.9 μSv/hr, 0.01 - 19.99 mRem/hr Sensor: Thin Wall glass GM tube Energy Response: 30KeV to 1.5MeV beta, gamma and X-ray radiation Accuracy: ±15% Alarm Range: Adjustable from 0 - 199.9 μSv/hr (19.99 mRem/hr) Overload Indicator: “OL”... - Page 22 SPECIFICATIONS Audio Signal: Selectable “ON” or “OFF” Temperature Range: 5° ~ 122°F (5° ~50°C) Humidity Range: 0 ~ 80% RH Operating Voltage: >300VDC Battery: 9V Alkaline - provides up to 50 hours of use Weight: 8 ounces (178g) Dimensions: 5½” x 2 ” x 1½” (143 x 74 x 34 mm) - 22 -...
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Page 23: Warranty
(2) years from date of purchase. Sper Scientific Ltd, will, at its own discretion repair or replace this instrument if it fails to operate properly during the warranty period. This... -
Page 24: Notice
NOTICE Sper Scientific believes this Radiation Meter to be accurate within reasonable standards of acceptance and includes instructions that, if followed, will yield accurate measurements. The manufacturer assumes no liability for damages, consequential or otherwise, that may arise from the use of the Radiation Meter by any person, under any circumstances.
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