Summary of Contents for Mengliang Instrument palmRAD 907
- Page 1 RAD 907 Nuclear Radiation Monitor Operating Manual Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com...
- Page 2 Revision: Septem ber 2005 Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com...
- Page 3 Copyright 1996, 2005 by Berkeley Nucleonics Corporation. All rights reserved. Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com...
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Page 4: Table Of Contents
Checking for Surface Contam ination 5 Maintenance Calibration Troubleshooting Service 6 Basics of Radiation and Its Measurem ent Ionizing Radiation Radiation Measurem ent Units Appendix A Technical Specifications Appendix B Technical Update Warranty Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 5: Introduction
The num ber of counts detected by the palm RAD 907 varies from reading to reading due to the random nature of radioactivity. A reading is ex pressed m ore accurately as an Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 6: Precautions
If you ex pect to not use the palm RAD 907 for longer than one m onth, rem ove the battery to avoid dam age from battery corrosion. Change the battery prom ptly when the battery indicator appears on the display. Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 7: Features
(LCD) (4). You control which unit of m easurem ent is shown by using the m ode switch. Whenever the palm RAD 907 is operating, the red count light (1) flashes each tim e a count (an ionizing event) is detected. Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 8: The Display
The current unit of m easurem ent (I)- - CPM, CPS, m R/ hr or Sv/ hr- - is displayed to the right of the num eric display. Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 9: The Switches
Utility Menu. For m ore inform ation, see "Taking a Tim ed Count," Using the Alert, and The Utility Menu in Chapter 3 and "Calibration" in Chapter 5. Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 10: The Detector
If the probe is not connected when you turn the palm RAD 907 EXP on, the instrum ent will not function properly. CAUTION: Do not rem ove the probe while the instrum ent is on. Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 11: The Input/ Output Ports
Interfacing to an Ex ternal Device in Chapter 3. The probe port on the end panel of the palm RAD 907 EXP allows you to plug the ex ternal probe into the instrum ent. Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 12: Operation
The m ost im m ediate 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 num eric display in the dose rate m odes. Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 13: Operating In Total/ Tim Er Mode
R/ hr; when the tim ed period is over, the total is displayed whenever you switch back to Total/ Tim er. The hourglass indicator is shown on the display in any m ode setting; it is blinking while the tim er is totaling counts. Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 14: Operating Ranges And Response Tim Es
30 seconds. In order to give a quicker response to changes, when the radiation level ex ceeds 6,000 CPM in any 30- second period, the reading is based on the previous 6 seconds, and Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 15: Using The Alert
The best alert level is one that rarely gives a false alarm , yet warns you when the radiation is higher than norm al. Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 16: Interfacing To An Ex Ternal Device
Geiger tube detects a count. A cable with an RS- 232 connector for an IBM PC- com patible com puter serial port and accom panying software are available from Berkeley Nucleonics Corporation. Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 17: Com M On Procedures
If you suspect an increase that is too sm all to detect with a short tim ed reading, you can take a longer count (for ex am ple 6, 12, or 24 hours). Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 18: Checking For Surface Contam Ination
CAUTION: Never touch the palm RAD 907 to a surface that m ay be contam inated. You m ay contam inate the instrum ent. The rubber strips on the back can be replaced if they becom e contam inated. Replacem ent strips are supplied with the palm RAD 907. Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 19: Maintenance
20% higher than the factory reading, the new calibration factor would be 120. The current calibration factor is displayed during the system check when the palm RAD 907 is first turned on. Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... - Page 20 Calibrat ing Elect ronically You can calibrate electronically using a pulse or function generator. Electronic calibration requires a cable with a 2.5 m m plug, with the tip carrying the signal. Follow these steps: Set the signal height to 3.3 volts (positive pulse) and the pulse width to 80 m icroseconds.
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Page 21: Troubleshooting
, it requires factory service continuous discharge replace the Geiger tube electrom agnetic field m ove the instrum ent away from possible sources of electrom agnetic or radio frequency radiation Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 22: Service
Do not attem pt to repair the palm RAD 907; it contains no user- serviceable parts and you could void your warranty. CAUTION: Do not send a contam inated instrum ent for repair or calibration under any circum stances. Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 23: Basics Of Radiation And Its Measurem Ent
6 Basics of Radiat ion and It s Measurem ent This chapter briefly tells what radiation is and how it is m easured. This inform ation is provided for users who are not already fam iliar with the subject. It is helpful in understanding how the palm RAD 907 works and in interpreting your readings. -
Page 24: Radiation Measurem Ent Units
. Microcuries (m illionths of a curie) and picocuries (trillionths of a curie) are also often used as units of m easurem ent. A bequerel (Bq) is equivalent to one disintegration per second. Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 25: Appendix A Technical Specifications
Appendix A Technical Specificat ions Detector: Halogen- quenched Geiger- Mueller tube. Effective diam eter 1.75" (45 m m ). Mica window density 1.5- 2.0 m g/ cm EXP only: Sam e detector in anodized alum inum housing with black vinyl grip. 500 volt power supply is located in the probe head. Am phenol Tucal connectors. -
Page 26: Appendix B Technical Update
Alert setting in any m ode to the desired setting. If you would like to have the corrected revision of firm ware installed, please return the unit to a factory authorized service center for reprogram m ing. Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com... -
Page 27: Warranty
Warranty does not cover battery replacem ent. Shanghai Mengliang Instrument Co., Ltd. TEL:+86-21-36308517 URL:www.menglianggroup.com Berkeley Nucleonics Corporation 415- 453- 9955 http:/ / www.berkeleynucleonics.com...
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