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Capintec CRC-712MH Скачать руководство пользователя страница 19

CAPINTEC, INC. 

CRC

®

-712MH 

 

 

Figure 3-1  CRC-712MH Front Panel 

 
 

December 09 

GENERAL OPERATING INSTRUCTIONS 

3 - 3 

Содержание CRC-712MH

Страница 1: ...sey NJ 07446 Phone 800 ASK 4CRC Fax 201 825 1336 Capintec Inc Service Center 620 Alpha Drive Pittsburgh PA 15238 Phone 800 227 6832 Fax 412 963 0610 Copyright 1992 Capintec Inc CRC is a registered tra...

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Страница 3: ...ING INSTRUCTIONS 3 1 GENERAL 3 1 PANEL DESCRIPTIONS 3 1 Front Panel 3 1 Back Panel 3 4 SYSTEM SETUP 4 1 GENERAL 4 1 RECEIVING CONDITION EXAMINATION 4 1 UNPACKING AND INSTALLATION 4 1 ASSEMBLY 4 2 ENVI...

Страница 4: ...EVENTATIVE MAINTENANCE 7 2 SERVICING 7 2 LINE VOLTAGE SELECTION FUSE REPLACEMENT 7 2 Readout Fuses 7 2 Printer Fuse 7 3 TROUBLESHOOTING 7 4 Nothing appears on the display 7 4 High background indicatio...

Страница 5: ...The CRC 712MH Radioisotope Dose Calibrator consists of the following Readout Unit Chamber s Power Cord Printer optional ELECTROMAGNETIC INTERFERENCE POTENTIAL This equipment generates radio frequency...

Страница 6: ...e are basic precautions you must observe to avoid injuring yourself the patient or damaging the equipment Follow the unpacking and assembly instructions document and read this manual carefully before...

Страница 7: ...d on the back of the Readout Unit is a label Figure 1 1 providing the system power requirements and the replacement fuse values for power line voltages Please reference CHAPTER 7 CLEANING AND MAINTENA...

Страница 8: ...ces on the bottom of the chamber on the 150 Volt Battery pack inside the chamber on the cover of the main power supply in the readout unit and pertains to the electrical safety of the chamber and read...

Страница 9: ...d sensitivity the wall of the ionization chamber is extremely thin and the chamber is filled with pressurized gas It is therefore essential to avoid mechanical shock or vibration of any kind CAUTION W...

Страница 10: ...Center to guarantee that the instrument s high reliability is maintained GENERAL SAFETY TIPS Unplug the equipment before cleaning it Use only a damp cloth do not use solvents or aerosol cleaners To pr...

Страница 11: ...the art electronic circuits in conjunction with a one atmosphere ionization chamber possessing extremely high sensitivity and stability Curie or Becquerel units of measurement are selected by a rotar...

Страница 12: ...meter and 25cm deep Ionization Chamber well allows convenient measurements of virtually any radioisotope in clinical use including whole generators Critical positioning of the sample vial or correctio...

Страница 13: ...C and the maximum relative humidity is 90 non condensing to warrant maximum reliability and accuracy The instrument should be located where the barometric pressure is within a range of 27 31 inches o...

Страница 14: ...les supplied with the instrument On Off Switch The on off power switch I on c off is located on the back of the instrument Dimensions Readout Height 15cm 6in Width 32cm 12 5in Depth 46cm 18in Weight 6...

Страница 15: ...ty of 1 count on the least significant digit The units of measurement are displayed as back lighted measurement characters after the numeric display Iometer Low Input Impedance Electrometer Accuracy 3...

Страница 16: ...ccuracy of the calibrator is determined by the accuracy of specific source calibration chamber linearity and response iometer digital readout Repeatability Measurements will repeat to within 1 for a p...

Страница 17: ...display and unit indicators The placement of the decimal point and illumination of the proper units is done automatically Blinking digits indicates an activity above the warning level Reference CHAPT...

Страница 18: ...ton depressed and the locking ring rotated counter clockwise G Calibration for Other Isotopes To obtain a readout of any isotope set this precision potentiometer to the calibration number for that iso...

Страница 19: ...CAPINTEC INC CRC 712MH Figure 3 1 CRC 712MH Front Panel December 09 GENERAL OPERATING INSTRUCTIONS 3 3...

Страница 20: ...or 220 Volt power line operation Line Voltage Selector Must be set to indicate the correct power line voltage Locking Screw Storage The Curie Becquerel selector switch may be locked in either position...

Страница 21: ...CAPINTEC INC CRC 712MH Figure 3 2 CRC 712MH Back Panel December 09 GENERAL OPERATING INSTRUCTIONS 3 5...

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Страница 23: ...o help obtain restitution from the carrier UNPACKING AND INSTALLATION The instrument is packed and shipped as a complete unit All the accessories and options are contained in their appropriate cartons...

Страница 24: ...and the printer are in the OFF or 0 position 2 Connect the Chamber Cable s to the connector s at the rear of the CRC 712MH Readout labeled IONIZATION CHAMBER 3 Attach the printer cable to the PRINTER...

Страница 25: ...ese environmental requirements are not followed the instrument may display erroneous readings POWER REQUIREMENTS CAUTION If the input voltage to the following items is not within the stated limits the...

Страница 26: ...nt data is printed on the installed printer 9 With a computer connected start the communication program that is loaded on the computer a Select the VT 100 HyperTerminal or other generic terminal emula...

Страница 27: ...lector switch on the front panel of the instrument This feature is particularly useful when a country is changing from the older unit of measurement the Curies to the currently recognized unit of meas...

Страница 28: ...of substantial activity enough to display 100 Ci 3 7MBq or higher if possible 0 5mCi 18 5MBq or higher into the calibrator well 4 Record the activity displayed including the decimal point and the unit...

Страница 29: ...CAPINTEC INC CRC 712MH Figure 4 3 January 08 SYSTEM SETUP 4 7...

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Страница 31: ...aily Tests The Daily Tests should be conducted at the beginning of each working day prior to measuring any samples which will be administered to patients These tests consist of a Zero Adjustment a Bac...

Страница 32: ...battery voltage for each chamber 3 Record the display reading The reading should be constant to within 2 volts and never vary more than 5 volts from one day to the next under constant operating condit...

Страница 33: ...re All readings should be consistent with previous readings to within 2 If a Cs137 Source is used as a Reference the reading will decrease by 0 2 per month Quarterly Tests The Quarterly Tests consist...

Страница 34: ...rements of the same sample as it decays Continue until the activity is below the minimum assayed in normal use CAUTION Initially the activity of the Mo99 contamination in the sample will be insignific...

Страница 35: ...sufficient to obtain precise measurements at approximately those levels normally encountered The activity determined by the calibrator should coincide with the activity of the certified Reference Stan...

Страница 36: ......

Страница 37: ...used isotopes As the user requirements are different for each nuclear medicine facility the procedure to re assign these preset buttons for other radioisotopes is provided in CHAPTER 4 SYSTEM SETUP SE...

Страница 38: ...measurement If numerous measurements are being made in the same activity range select the specified range for the faster measurements 5 Insert the sample to be measured into the Ionization Chamber we...

Страница 39: ...MINISTRATION ADDITIONAL CALIBRATION NUMBERS Radioisotopes other than those whose calibration numbers are supplied by Capintec may also be measured by the calibrator New calibration numbers may be deri...

Страница 40: ...e owner s manual for a standard CRC Calibrator 4 Record the displayed activity for the measured source 5 Place the SAME source in the CRC 712MH chamber 6 Select the OTHER push button and adjust the Ca...

Страница 41: ...s high reliability is maintained Contact Capintec s Authorized Service Center in Pittsburgh for servicing or re calibration at 1 800 227 6832 CLEANING INSTRUCTIONS WARNING TO AVOID ELECTRICAL SHOCK OR...

Страница 42: ...In this event please contact Capintec for further assistance The Quality Assurance tests should be immediately performed if The equipment has been subjected to extreme physical stress Liquids enter t...

Страница 43: ...ified for the selected line voltage and slide the clear plastic door to the right a For the 115 volt power line use a 1 4 Amp slow blow type fuse b For the 230 volt power line use a 1 8 Amp slow blow...

Страница 44: ...T High background indication Chamber Well liner or dipper may have become contaminated See CHAPTER 5 QUALITY ASSURANCE ACCEPTANCE TESTING SECTION CONTAMINATION TEST Background may actually be high Che...

Страница 45: ...0017 Epson Roll Printer and cable 5430 0058 Printer Ribbons CALL Additional copies of Owner s Manual 9250 0050 Replacement 150 volt lithium battery 0500 2019 Note Circuit diagrams component parts list...

Страница 46: ...ard RS 232C communication port The measurement data can be had in 4 different formats and used as needed for different programming applications As examples the calibrator data can be used for dose com...

Страница 47: ...ipulating the maximum environmental conditions for safe storage and shipment Figure 7 2 Figure 7 3 In order to ship this product all appropriate Department of Transportation DOT and if shipped by air...

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Страница 49: ...tity in time interval dt dt dN A The special unit of activity is Curie Ci 1 Ci 3 7 x 1010 s 1 exactly Note The term nuclear transformation is meant to designate a change of nuclide of an isomeric tran...

Страница 50: ...s Particle Radiation The most energetic particle emitted by a radionuclide has an energy of less than 10 MeV which corresponds to a range of about 10 mg cm2 8 cm in air Because of its short range an p...

Страница 51: ...ancy in the atomic orbital shell resulting in x rays as the atom de excites The energy of k x ray is approximately 100 2 Z Ek keV where Z is the atomic number of the daughter nucleus rays are also oft...

Страница 52: ...echanisms are Photoelectric effect Compton effect and pair production The energy of the photon determines which process or processes is possible Photoelectric Effect The photoelectric effect is an int...

Страница 53: ...n and a positron appear A positron is a particle with the same properties as an electron except that it has a positive charge In order to produce an electron positron pair the incident photon must hav...

Страница 54: ...of Activity Certified Co60 SRM to due Output Detector A Sample of Activity A Sample to due Output Detector RA 1 The sensitivity of the detector for a photon of energy Ei is defined as 60 Co of Curie...

Страница 55: ...ntainer for all radioactivity measurements The plastic syringe is convenient since it represents the delivery vehicle to the patient in most clinical situations Significant errors will occur in some i...

Страница 56: ...the instrument unless the effect of impurities is eliminated by photon filtration as is done with Mo99 breakthrough in Tc99m However the presence of low level radionuclide impurity does not negate the...

Страница 57: ...sured the reading will be lower than the true activity in the needle due to the shielding effects filtration of the needle To estimate the true activity in a needle increase the reading obtained with...

Страница 58: ...bstantial It could be about 3 to 5 times that for a syringe If no value is given in this column the correction is not significant except for a container differing greatly from the standard ampoule e g...

Страница 59: ...A HANDBOOK OF RADIOACTIVITY MEASUREMENTS PROCEDURE K S Associates Inc Accredited Dosimetry Calibration Laboratory TABLE I CAL CARD CRC _______ Serial No _________ Tested ___ ___ ___ By ____ Isotopes...

Страница 60: ...f the overall accuracy of an assay See previous sections of this manual for a discussion of some of the conditions under which the calibration numbers are valid Uncertainty Due To Radioisotopes Calibr...

Страница 61: ...Calibration Number 1 Cs137 20mm x 33mm dia st steel 3M Tube 6502 6D6C NIST uncertainty 2 0 3275 2 I125 4 5mm x 0 8mm dia 3M 6702 resin bead NIST uncertainty 5 0 145 3 I125 4 5mm x 0 8mm dia 3M 6711 si...

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Страница 63: ...is the elapsed time after the pure parent isotope was produced and F is the decay branching ratio The chamber response R may be obtained from the calibration number N using the following equation 079...

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Страница 65: ...e 6 2 Sleeve Method 5 4 Assembly 4 2 M B Maintenance Background 5 2 Preventive 7 2 C Measurement Other Isotope 6 2 Checking Preset Calibration 5 3 Pre Measurement Procedures 6 1 Circuit Protection 2 4...

Страница 66: ...Safety 1 1 Tips 1 4 Servicing 7 2 Setup 4 1 Shielding 2 4 Shipping 7 7 Symbol Definitions 1 1 T Technical Description 2 3 Test Accuracy 5 5 Battery 5 2 Contamination 5 2 5 4 Daily 5 1 5 3 Geometry 5 1...

Страница 67: ...mplied warranties and we make no warranty that the products sold herein are merchantable or are suitable for any particular purpose The benefits of this warranty shall extend only to the buyer and to...

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