Excalibur CDX-2000B Electrometer
Contents
1. Dimensions w h l We A tadeees thet cence ese LCD 2 x 20 with 5 16 in high letters for easy viewing BNC two lug triaxial connector Nominal 300 volt bias 300 150 0 150 300 VDC UL listed wall mounted power supply 110 or 220 VAC input 9VDC 300mA output Automatic zero function user activated Isolated RS 232 uni directional 19 200 baud 8 data bits no parity 1 stop bit 8 24 x 2 75 x 9 in 22 2 x 7 x 23 cm 3 0 Ibs 1 4 kg Specifications subject to change without notice Using the CDX 2000B Before using the CDX 2000B to take measurements perform the following steps to ensure accurate readings The CDX 2000B features an automatic zero function and a convenient way to check battery status and bias level Automatic Warm Up and Zero Adjust 1 Turn on the CDX 2000B The display will count down 15 minutes of recommended warm up time 2 When the display reads Press START to zero press the Start Reset button to perform the zero adjustment This process will take 60 seconds 3 The display will read ZEROING COMPLETE The CDX 2000B will now default to the Bias mode Note To perform a zero adjust measurement after making other measurements press and hold the Mode button for two seconds Repeat steps 2 3 above Bias Mode 1 The charge level of the internal battery is displayed in percent When the battery capacity drops below 15 the display will read2. RECHARGE BATTERY 2 Use the arrow keys to select the bias level from the following options 100 300VDC 50 150VDC 0 OVDC 50 150VDC 100 300VDC 8 3 Press the Mode button to select a mode of operation You may return to the Bias mode at any time to change the bias voltage A CAUTION When connecting or disconnecting an ionization chamber to the CDX 2000B set the Bias voltage to 0 OVDC Rate Readings 1 Use the Bias mode to set the bias voltage 2 Use the Mode button to select the Rate Mode 3 Irradiate the ion chamber with a radioactive source 4 The CDX 2000B will begin to measure the current Wait about 3 seconds for stabilization 5 The Rate measurement will be displayed NOTE Rate measurements of 195 00 nA and greater will produce an OVERLOAD message Charge Readings 1 Use the Bias mode to set the bias voltage 2 Use the Mode button to select the Charge Mode 3 Use the arrow keys to select the collection time Time periods from 0 600 seconds are available in 15 second increments 4 Irradiate the ionization chamber 5 Press the Start Reset button The CDX 2000B will count down from the time set and display the charge accumulated When the countdown is complete the charge accumulated will remain until the unit is reset 9 Record the reading and press the Start Reset button to clear the reading and reset to the chosen collection time Repeat steps 3 6 for
3. Telco Adapter Kit RJ 11 to DB 9F 73006 110 Lead Acid Battery Replacement Kit including 110VAC wall charger 73006 220 Lead Acid Battery Replacement Kit including 220 VAC wall charger et PHi Troubleshooting Questionable Readings If readings are off determine if there is any leakage from the CDX 2000B or ionization chamber Follow steps 1 7 under General Operation Can t Get Out of Charge Mode or Rate Charge Mode Upon completion of a charge collection in the Charge or Rate Charge mode Start Reset must first be pressed to reset the display before other buttons will function No Response If the system does not respond to any of the buttons use the external reset switch See page 5 for details Low Battery The CDX 2000B contains 1 rechargeable sealed lead acid battery with a life of about 10 hours When the battery is at 15 of capacity RECHARGE BATTERY will appear on the display If the battery becomes low during a charge collection the screen will alternate between RECHARGE BATTERY and the status of the collection The collection process will not be interrupted The CDX 2000B will also operate with the charger plugged into a wall outlet Re charging the battery takes 6 8 hours The CDX 2000B may be continually charged when not in use with no detrimental effects to the internal battery The CDX 2000B will shut off automatically if it is not plugged into the wall charger and is left unattended for more
4. other charge readings NOTE Charge measurements of 999 999 nC and greater will produce an OVERLOAD message Rate Charge Readings 1 2 Use the Bias mode to set the bias voltage Use the Mode button to select the Rate Charge Mode The CDX 2000B will begin to measure current Use the arrow keys to select the collection time Time periods from 0 600 seconds are available in 15 second increments Irradiate the ionization chamber with a radioactive source To take charge measurements and rate measurements simultaneously press the Start Reset button The CDX 2000B will count down from the time set and display the charge accumulated When the countdown is complete the charge accumulated will be displayed until the unit is reset Record the charge reading and press the Start Reset button to clear the reading and reset to the chosen collection time Repeat steps 3 7 for other charge readings 10 Charging the internal batter y 1 When the battery capacity is 15 or RECHARGE BATTERY appears on the display plug the 2 5 mm jack of the charger into the electrometer and the other end into mains power 2 Whenever the battery is being charged the Battery percent display in the Bias mode will indicate 100 3 The CDX 2000B will also operate with the charger plugged into a wall outlet irregardless of the battery capacity Re charging the battery takes 6 8 hours The CDX
5. than 3 hours If you require further assistance please contact Standard Imaging s Service Department at 608 831 0025 73 Customer Responsibility A Federal law in the U S A and Canada restricts the sale distribution or use of this device to by or on the order of a licensed medical practitioner The use of this device should be restricted to the supervision of a qualified medical physicist Handling of radioactive sources is potentially hazardous and should be performed by qualified personnel Should repair or replacement of this device become necessary after the warranty period the customer should seek advice from Standard Imaging Inc prior to such repair or replacement If this device is in need of repair it should not be used until all repairs have been made and the product is functioning properly and ready for use The owner of this device has sole responsibility for any malfunction resulting from abuse improper use or maintenance or repair by anyone other than Standard Imaging Inc The information in this manual is subject to change without notice No part of this manual may be copied or reproduced in any form or by any means without prior written consent of Standard Imaging Inc Standard Imaging products have unit serial numbers with coded logic which indicates the product day and year of manufacture and a sequential unit number for identification JYY DDD X Turin CDX 2000B product line y AN Last two digits of the
6. 2000B may be continually charged with no detrimental effects to the internal battery Automatic Shutdown To maximize battery life the CDX 2000B will shut off automatically if it is not plugged into the wall charger and is left unattended for more than 3 hours 11 Maintenance As is standard practice for other electrometers it is recom mended that the CDX 2000B be calibrated every 2 years This calibration should be performed by an Accredited Dosimetry Calibration Laboratory Exterior cleaning of the device can be done with a soft brush and a cloth Gently brush all surfaces to remove dirt and dust Remove any remaining dirt with a cloth slightly dampened with a solution of mild detergent and water or a liquid disinfecting agent Do not use water or liquid on triax output Do not permit any liquid to seep into the CDX 2000B in any manner during cleaning It is not recommended to clean the window of the LCD with any thing other than a mild detergent and a very soft cloth Failure to use a soft cloth may result in a scratched window this may impair the visibility of the LCD Service Qualified users may replace the Lead Acid battery only An illustrated Instruction Booklet is available See the Parts and Accessories List below There are no other user ser viceable parts in the CDX 2000B Parts and Accessories List REF Description 80316 Instruction Manual 72011 Battery Charger 110 VAC 76007 Battery Charger 220 VAC 72013
7. 3 which are returned to Standard Imaging promptly after discovery of the defect and 4 which are found to be defective upon Standard Imaging s examina tion Transportation charges are the buyer s responsibility This warranty extends to every part of the product except fuses batteries or glass break age Standard Imaging Inc shall not be otherwise liable for any dam ages including but not limited to incidental damages consequential dam ages or special damages Repaired or replaced products are warranted for the balance of the original warranty period or at least 90 days This warranty is in lieu of all other warranties express or implied whether statutory or otherwise including any implied warranty of fitness for a particular purpose In no event shall Standard Imaging Inc be liable for any incidental or consequential damages resulting from the use misuse or abuse of the product or caused by any defect failure or malfunction of the product whether a claim of such damages is based upon the warranty contract negligence or otherwise This warranty represents the current standard warranty of Standard Imaging Inc Please refer to the labeling or instruction manual of your Doc No 80316 02 03 11 02 15 pgs
8. SeeDOS Product User Manual CDX 2000B Electrometer CDX 2000B Table of Contents General Precattions is arenan ii r eisi 2 General Operation tdi a tido 3 Front Panel ss sciccssssscesdacselstuacsevoneveguaddandsteps tagstasteasss 4 Rear Pane A A No eer oer 5 Features and Specifications oooooccconcconcnnonnnonnanonnnnnos 6 Using the CDX 2000B tits 8 Manten na 12 DEVICE oie e EEE R 12 Parts and Accessories List ooooconnnncccnonanonononoon os 12 Troubleshooting 3 jsicsissaiessasiesentdsass leasaageceiacsenntae 13 Customer Responsibility oonononnncononcnoncnnncnnonnnnns 14 Warranty cean tear E E el acelin hacia 15 Distributed by SeeDOS Ltd For further information or a quotation please contact Colin Walters at cwalters seedos com Tel 44 1525 850670 Fax 44 1525 850685 General Precautions Warnings and Cautions alert users to dangerous conditions that can occur if instructions in the manual are not obeyed Warnings are conditions that can cause injury to the opera tor while Cautions can cause damage to the equipment A WARNING An electrical shock hazard of up to 300 VDC is possible whenever the bias voltage is active Always set the bias to the 0 or 0 VDC level whenever a device is connected to or disconnected from the CDX 2000B A CAUTION Proper use of this device depends on careful reading of all instructions and labels A CAUTION Input voltage on triax connector should be no greater than 5V or 5
9. V A CAUTION This device should never be submerged in water or a solvent to clean or scrubbed with an abrasive cleaner Do not drop or mishandle unit Calibration factor changes may result A CAUTION Do not disassemble unit since it may result in change of calibration factor Refer servicing to qualified individuals General Operation With nothing connected to the input jack of the CDX 2000B turn the power on and wait at least 15 minutes for the electrometer to warm up Press the Start button to perform the electrometer zero adjustment This will take about one minute Connect the ionization chamber to the CDX 2000B and select the desired voltage bias Allow at least 10 minutes for the system to stabilize Verify the leakage of the ionization chamber is within the manufacturer s stated acceptable limits Press and hold the Mode button and repeat the zero ing process in Step 2 but with the ionization chamber connected This is the system zero adjustment Check the system leakage Take a reading without exposing the chamber to radiation This reading should be less than 0 1 of the final signal expected Measure the atmospheric temperature and pressure 8 Turn on or insert the radiation source s and take at 10 least 3 measurements Further explanation of the Rate Charge and Charge Rate modes can be found on page 10 and 11 Analyze the data taking into account the average of
10. rial port A standard 4 conductor tele phone cable may be used to connect to the serial port for remote observation or data recording A 15 cable and DB 9 female adapter for connection to the computer has been provided Do not connect RS 232 serial port to the telephone line This port is for connection to equipment where no risk of external voltage exists External reset switch In the unlikely event that the device stops responding use a small diameter rod to lightly press the internal button and reset the device Features and Specifications Rate Mode Range oocconicccnncccnnno 0 01nA 195 00nA Charge Mode Range 0 01nC 999 999nC Selectable time periods for charge collection R ngen aiaa 0 600 seconds Increments iseci oioi 15 sec Resolution 1 sec Other mode ooocococcconoccnioncconnnonnnoss free running Repeatability Short term 00 ce eeeeeeeeeereeees 0 1 one count Long termines nireks 0 2 max change over 2 yrs Signal settling time typ lt l sec Linearity A teeta veenet teanctss 0 06 1nA to 200nA typical Learn das lt SfA at STP Operating Conditions PresSSUlTO onran 680 to 770 mm Hg a ci ES 10 to 40 C Relative Humidity 20 to 80 non condensing Storage and Transport Conditons Press Utica 600 to 800 mm Hg TEMPLATE atrio cnrtesl retina 15 to 50 C Relative Humidity 10 to 95 non condensing Bias Voltage Five user settings
11. the readings system leakage temperature pressure corrections calibration factors and any other appropriate corrections to be made When all measurements are completed set bias voltage to OVDC turn off the CDX 2000B and disconnect the ionization chamber Front Panel CDX 2000B Power button Turns the unit off and on Input connection A standard two lug BNC triax connector for signal input This connector features low leakage current properties The signal current is carried on the central lead the guard carries the high voltage and the outermost ring is ground To protect the input connector always replace the chain cap when the CDX 2000B is not in use Mode button Press to toggle through the modes in the following order Bias Rate Charge and Rate Charge Press and hold for 2 seconds to select the zero adjustment procedure O Start Reset button Press to start and stop timed charge collections in the Charge or Rate Charge mode or to reset the display following a collection Arrow buttons Press to toggle through voltages in the Bias mode or to select the time period increments for taking a charge reading Rear Panel O 2 5mm Battery Charger Input Connect the battery charger to this input jack when charging the internal battery Note If the CDX 2000B is being used in a patient environment do not plug in the charger Connect to mains power through an isolation trans former only RS 232 se
12. year e g 1999 99 2000 00 DDD Day of the year 1 lt DDD lt 365 P OA Unique unit ID number 1 lt X lt 9 14 Warranty Standard Imaging Inc sells this product under the warranty herein set forth The warranty is extended only to the buyer purchasing the product directly from Standard Imaging Inc or as a new product from an autho rized dealer or distributor of Standard Imaging Inc For a period of twenty four 24 months for well chambers and twelve 12 months for all other Standard Imaging Inc products from the date of original delivery to the purchaser or a distributor this product is war ranted against functional defects in materials and workmanship provided it is properly operated under conditions of normal use and that repairs and replacements are made in accordance herewith The foregoing war ranty shall not apply if the product has been dissembled altered or re paired other than by Standard Imaging Inc or if the product has been subject to abuse misuse negligence or accident Standard Imaging s sole and exclusive obligation and the purchaser s sole and exclusive remedy under the above warranties are limited to repairing or replacing free of charge at Standard Imaging s option a product 1 which contains a defect covered by the above warranties 2 which are reported to Standard Imaging Inc not later than seven 7 days after the expiration date of the 12 or 24 month warranty period
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