DryCal 800 User Manual
Contents
1. Touchscreen Firmware Rev 10 Date Last Calibrated 50 Cycles Since Calibration Calibration Number 0131379 10311869677 Const 1 Installed Cell Type LOW ML 800 10 Installed Cell S N 101896 The About screen displays the base serial number firmware revision date of last cell calibration cycles run since last calibration calibration number model of installed cell and cell serial number Provide these numbers when contacting customer service or technical support Diagnostics Screen RN Diagnostic Base Pressure 11 992 psi Cell Differential 8 43 mmHg Pressure Cell Temperature 71 04 F Optical Sensor Reading 0006 1564 1185 1650 The Diagnostics screen shows important information regarding the base and cell pressure cell temperature and optical sensor reading These are continuously monitored when the base is operating Setting User Preferences Type 1000 o GEE gt GEIB 000 Standardization Temperature F gt Number in Average 100 The DryCal 800 offers enhanced electronics options to allow the user to define parameters specific to an application These parameters may be entered from the Operation screen or by pressing the blue section of the Measure screen Sensor Factor As applicable change the sensor factor from its default value of 1 000 to the value provided by the MFC or MFM manufacturer See Using Sensor Factors How 755 37 sccm 014 of100 SIP 32 0F 14 7 ps2. you receive NIST traceable ISO 17025 ANSI Z 540 and NIST Handbook 150 backed calibration certificates Recertification includes a 90 day service warranty should any related labor or parts replacements prove faulty Due to the intensive nature of our DryCal 800 Recertification the time spent within our service facility during this process is generally fourteen days beginning from the day we receive your product For a detailed explanation of our Recertification process our laboratory and our accreditation please visit our website at www drycal com and visit the Calibration amp Repair page Sending Your DryCal 800 to Mesa Please contact Mesa for a service guote before sending your DryCal 800 to our factory for elective Recertification or other service You can get a service guote through our automated web based system at http drycal mesalabs com request an rma by emailing csbutler mesalabs com or by calling us directly at 973 492 8400 Sending your DryCal 800 to Mesa without a service quote may result in return of the instrument without inspection or a substantial delay in service turnaround time When requesting your service quote provide your DryCal 800 model serial number and revision level Also describe any product issues you may be experiencing Please keep in mind that Mesa will not begin evaluation and service of your DryCal 800 until you have accepted and approved in writing our formal service quote This protects bo
3. Test Cable e Certificate of Calibration e RS 232 Serial Cable e External Inlet Filter 800 3 only e USB Cable e Certificate of Calibration Warnings A The DryCal 800 is not rated intrinsically safe and is not for use with explosive gasses or for use in explosive environments A The DryCal 800 is not designed for gas flows above the rated specifications of the flow cell in use Please consult the product specification on page 12 of the manual for more information regarding acceptable gas flow ranges or visit our website at drycal mesalabs com for the most current product specifications N For use with clean laboratory air or other inert gasses only Using Your DryCal 800 Getting Started Ensure that the included 12V 3A AC power supply is connected to the base Install the desired cell onto the base All cells except the 75 cell should be installed with the blue adapter ring in place If using the 75 cell remove the adapter ring by rotating counter clockwise and lift off Turning the DryCal 800 On amp Off Flip the power switch in the rear of the DryCal 800 base to start the unit An opening screen will appear followed by the splash screen The DryCal 800 is designed to operate using only AC power this unit does not have a battery Ensure that your unit is plugged in prior to turning on Communication Ports The DryCal 800 includes a USB B port and RS 232 serial port for bidirectional communication including data down load an
4. 5 mm center positive North American standard others available Inlet and Outlet Fittings Swagelok Operating Temperature 15 30 C Storage Temperature 0 70 C Operating Humidity 0 0 non condensing Display Resistive touchscreen Operating Pressure Absolute 15 PSI Data Port RS 232 Serial and USB B Warranty 1 year battery 6 months Mesa highly recommends annual Recertification product maintenance pre and post dynamic flow comparisons and full dimensional calibration This is elective and is not included as a warranty item All specifications are subject to change Please contact Mesa or visit our web site at http drycal mesalabs com for the most current product information DryCal Pro Software Visit Mesa s website to download your copy of DryCal Pro software http drycal mesalabs com drycal pro software DryCal Pro captures flow data from your DryCal 800 directly to a pre configured table The data can be exported to selectable Windows office environment To run DryCal Pro you must have Windows XP or 7 Microsoft Excel 2003 and up and either a USB port or a RS 232 serial port Limited Warranty Mesa Labs warrants eguipment of its manufacture and bearing its nameplate to be free from defects in workmanship and material We make no warranty express or implied except as set forth herein Mesa s liability under this warranty extends for a period of one 1 year from the date of product s shipment Mesa La
5. Ein Unione annus er nee ee 2 UPa nee ae ee ee ee ee ne es ehe een 3 WOHIN nee Er TEE E E 3 Using the DIV Cal 800 ee ea ee Te ae rer I TIERE am Ka bas 4 aa an ee An N 4 Turning the DryCal 800 On amp Off aa gen ee ana 4 Communicator POMS mna ae maa ata Sa Di nan dots aa ema ana aon 4 Using the Diy Cal 800 TolicnSCree ek mantan aan ae a are aan Kana Na 4 HOME SO na Na ea EEEE 4 Measure Operations and Date Time Delay Screen ooooo oo Woo oo mo oo oo mo oom ana 5 About Diagnostics Setting User Preferences oo ooo oooo Wo Wo Wo oo momo oo moon 6 Sensor Factor PTVM Standardized or Volumetric and Number in Average Wo om mba 7 Install nd amp Removing FOW CONS sn en een enge 8 Factory bera SCE IAG abi 8 Connecting the DryCal 800 to a Gas FIOW SOUFGE an ea Bes asa Nana 8 TAG Reg ae Nana 9 seting EISEN Piero es ee naa Bani 9 Using Sensor Factor for MFC and MFM ali Dae ana nana 9 Error MESSAGES Aa EE TAEAE 9 Annual Maintenance and Ca Rae aa 10 RESET ON ae ee an eni 10 sending Your DiyCal 800 tO MESA ea en ana ba ana enter 11 SN Ri ee ttre 11 TO ee ee E E TN denen 11 DryCal GOO Specifications na AAi 12 Ba RW ATV a EEA EA EEA ea re TER 13 Accuracy 4 Reliability Convenience Introduction Congratulations You ve chosen the DryCal 800 featuring Proven DryCal Technology from Mesa Labs The DryCal 800 has five interchangeable cells that offer 0 25 to 0 15 of reading standardized accuracy within a po
6. Proven DryCal TECHNOLOGY DryCal 800 User Manual NVLAD MesaLabs NVLAP Lab Code 200661 0 MesaLabs Mesa Labs Commitment As a manufacturer of critical equipment quality is the highest priority in our manufacturing process Mesa Labs commits to providing creative innovative thinking and the engineering and scientific expertise needed to produce gas flow related products and solutions that are universally recognized for their Superior performance quality and value Proven DryCal technology is the recognized leader in gas flow measurement providing the industry s most reliable products service and solutions for professionals in environmental protection workplace safety industrial process control and laboratory calibration We strive to provide the closest NIST traceable legal defensibility of any flow calibration equipment manufacturer and we actively maintain our NVLAP NIST ISO 17025 laboratory accreditation in order to support our claims and continually improve our quality system and laboratory profi ciency Thank you for purchasing our products From all of us at Mesa Labs best wishes for many years of accurate defensible primary flow measurements Mesa Laboratories Inc 10 Park Place Butler NJ 07405 USA 973 492 8400 FAX 303 484 4992 www mesalabs com Symbol MLAB on the NASDAQ Table of Contents Ar Ke aa 2 Register Tour Pro Neni 2 ABDUE VOW DC A O OO ee eni ena 2 OPTION er Ber ee en essen
7. a positive displacement primary piston prover for gas flow measurements in either pressure or vacuum applications Using Proven DryCal Technology it combines the accuracy of a primary standard with unequaled speed and convenience Volumetric or standardized flow readings are obtained with the push of a button The DryCal 800 can be set to take flow readings manually one reading at a time or automatically in the continuous auto read mode The DryCal 800 can be programmed for up to 100 readings in an averaging sequence Operation The versatile DryCal 800 can be used to measure the gas flow rates at atmospheric pressure 7mmHg Its Proven DryCal Technology features a near frictionless piston and flow cell design that provides highly accurate liquid free flow measurements of unequaled speed and convenience For more information about our patented Proven DryCal Technology please visit our website at drycal mesalabs com The DryCal 800 consists of two primary components The base and the flow cell There are five interchangeable flow cell models each with a designated flow range The flow cell plugs into the base unit in order to create a complete functional DryCal 800 system The base component houses the main computer and timing circuitry The flow cell is easily fitted into the base unit s interface connector and two guide pins The flow cell performs the actual flow measurements For this purpose it houses a piston and glass assembly compri
8. bs warrants service performed on eguipment at our factory for a period of ninety 90 days During these periods the warranty is expressly limited to repairing or replacing any device or part returned to the factory and proven defective upon evaluation These war ranty periods will not be extended under any circumstances Mesa assumes no liability for conseguential damages of any kind The purchaser by acceptance of this eguipment shall assume all liability for consequences of its misuse by the purchaser its employees or others This warranty is void if the equipment is not handled transported installed or operated in accordance with our instructions This warranty is void if any evidence exists that equipment has been opened including breaking the DryCal warranty seal If equipment damage occurs during transportation to the purchaser Mesa must be notified immediately upon arrival of the equipment A defective part in the meaning of this warranty shall not when such part is capable of being repaired or replaced constitute a reason for consider ing the complete equipment defective Warranty repair is separate from our elective recertification service which includes calibration and associate calibration certificate Mesa Labs will not provide recertification and related calibration certificate for equipment under warranty unless warranty repair affects calibration or calibration is requested and paid for by the purchaser Acknowledgment and appr
9. d operation using the DryCal Pro software The USB port includes a driver and does not reguire any additional driver download New firmware as it becomes available can be easily uploaded through the USB or RS 232 serial ports The side of the base contains a gold port that is used for pressure calibration at our facility Nothing should be in serted into this port by the user On the back on the base is the clock signal port This is used for verifying clock timing Using the DryCal 800 Touchscreen DryCal 800 Flow Range 5 500 ccm Installed Cell 10 LOW MEASURE gt The DryCal 800 uses a resistive touchscreen display for easy navigation through menu options and data entry Nu meric values can be changed using the blue arrows on the right of the screen At any time the user may return to the home screen by pushing the home icon in the lower left of the screen Home Screen The Home screen allows access to the Measure screen and all submenus You can return to this screen at any time during operation by pressing the Home button in the lower left corner of the screen Measure Screen How 760 35 sccm 010 of100 SIP 32 0F 147psi Average 7584 sccm Gas Pressure 12 178 psi zas Temperature 71 00 F D m The Measure screen allows you to capture and observe instantaneous flow data During operation the measured flow rate reading number standardization information and average readings are displayed at the
10. he sensor factor into the DryCal 800 before calibrating the MFC or MFM The Sensor Factor is displayed on the run screen of the DryCal 800 as SF X XXX The default setting is 1 000 If you input a sensor factor other than 1 red text will display on the Measure screen showing the sensor factor applied Error Messages No Cell This message means that the cell is not present Hit the home button to reset and install the cell Piston Error This message means that the piston did not return to the bottom of the cell properly during opera tion Hit the home button to reset If you continue to receive error messages after following these steps Please contact customer service for assistance Annual Maintenance and Calibration Your DryCal 800 is engineered to provide years of reliable service with appropriate care and maintenance Mesa recommends an annual calibration by our ISO 17025 accredited laboratory to help ensure the best possible flow measurements and to provide an audit trail for those applications subject to regulatory reguirements If you should encounter any problems with your DryCal 800 immediately contact Customer Service and provide a detailed description of your situation including DryCal 800 model and serial number information about the flow source and the current calibration setup environmental conditions during the test the flow point or points that you re checking and an explanation of the issue you re experienc
11. i Average 7574 scem Sensor Factor of 1 020 Applied Gas Pressure 12 187 psi Gas Temperature 71 00 F NN PTVM PTV stands for Piston Tare Value which is the amount of gas that passes around the piston during measurement All DryCal calibration equipment has a factory set PTV that is stored in the memory of the DryCal cell The value is typi cally very small 0 008 for the ultra low flow cells 0 1 ccm for low flow cells 0 2 ccm for medium flow cells and 1 4 ccm for the high flow cells We adjust for this leakage by adding PTV to the measurements On our highest accuracy instruments we allow for the adjustment of the Piston Tare Value with the Piston Tare Value Multiplier PTVM When using the instrument with gas species other than air or nitrogen the molecular behaviors of these gases may degrade the PTV For highest accuracy the instrument s PTV can be adjusted Adjusting the PTV is accomplished by entering a new PTVM The PTV is multiplied by the PTVM to adjust the measurement The default value for air and nitrogen is 1 000 The PTVM can be set to any value from 3 000 to 0 200 For flows above 20 ccm a new PTVM can be calculated by using the viscosity of the gas being measured and accu rate results will be obtained Calculate the PTVM by taking the ratio of the viscosity of nitrogen to the viscosity of the gas under test For example to calibrate hydrogen consider the following at 0 C the viscosity of nitrogen
12. ing Recertification Your DryCal 800 primary piston prover is a precision measuring standard comprised of moving parts that are ma chined to extremely close tolerances Additionally various environmental factors product wear drift of the tem perature sensors and pressure transducers or inadvertent damage may adversely affect your measurement accuracy or general performance For these reasons Mesa highly recommends having your DryCal 800 annually verified by our ISO 17025 accredited laboratory in order to ensure its measurement integrity For those applications subject to regulatory or ISO reguire ments verification by our accredited laboratory provides you with a defensible audit trail of the highest guality As the ultimate guality assurance measure as well as to keep your DryCal 800 in top condition and updated with the lat est hardware and firmware upgrades as available Mesa offers our elective Recertification program Recertification is an intensive service and calibration package that provides pre and post dynamic flow comparisons against our Proven DryCal Technology lab standard complete product refurbishment including cleaning of the piston and glass assembly installation of any available upgrades and other routine and preventative maintenance items and full dimensional cal ibration comprised of 20 or more tests using precision instruments and gauges such as depth and laser micrometers and a temperature bath When completed
13. is 165 31 microPoise and the viscosity of hydrogen is 83 21 microPoise Express these as 165 31 83 21 or 1 987 and enter 1 987 as the PTVM for this cell When measuring alternate gases at flows below 20 ccm or for absolute best accuracy it may be necessary to per form a dynamic leak test using the gas under test Contact Mesa for information on this test Standardized or Volumetric Choose whether you would like to conduct standardized or volumetric flow readings The user can select the stan dardization temperature The standardization pressure is set at 60mmHg 14 7 psi 1 atm 1013 25 mbar Change the standardization temperature by selecting this option and changing the value using the arrows Number in Average Changes the quantity in an average sequence consecutive readings from 1 100 Default value is set at 10 Installing amp Removing Flow Cells The DryCal accepts interchangeable DryCal 800 specific flow cells for different flow ranges When a cell is installed the home screen displays the model number and flow range of the installed cell If no cell is installed this informa tion will be blank The base includes a blue friction fit adapter ring that should be removed when using the 75 cell due to its larger diameter Replace this adapter ring when using the other cells Installing Flow Cells 1 Ensure blue adapter ring is installed for using all cells except the 75 Remove the ring if installing the 75 ce
14. ll 2 Position the selected flow cell into the base opening its top label facing you 3 Carefully align the cell with the guide pins when the guide pins are engaged press down 4 When powered on the DryCal 800 senses which cell is installed and displays the appropriate units for that cell Removing Flow Cells Grasp the flow cell firmly hold the base in place and lift upwards Factory Default Settings The DryCal 800 has a number of user definable features and settings Parameters Factory Settings Optional Settings No of Readings in an Averaging Sequence 10 1 100 Atmospheric Pressure mm Hg mBar kPa PSI Temperature C OF Standardized Temperature Setting 0 C 0 0 50 0 C Connecting the DryCal 800 to a Gas Flow Source The accuracy of the DryCal 800 is dependent upon its source being stable An unstable flow source may produce inconsistent readings Flow direction is indicated on the cell To use a pressure flow source connect to the inlet fitting or to use a vacuum flow source connect to the outlet fitting The DryCal 800 is designed to be used at ambient pressures only This is easily accomplished by leaving the outlet of the flow cell open to atmosphere for pressure applications or the inlet open to atmosphere in vacuum scenarios If tubing is needed to exhaust test gases to a fume hood insure that the exhaust tubing is of sufficient diameter such that the pressure to the DryCal 800 calibrator does not exceed 5 inches of wa
15. oval must be received from Mesa prior to returning parts or equipment for credit To obtain a service quote contact csbutler mesalabs com with details of the warranty or service claim Purchaser is responsible for return shipment of equipment to the factory for warranty and non warranty repairs Mesa Labs will provide ground shipment to the purchaser for warranty repairs All shipments from Mesa Labs will be handled by FedEx unless otherwise requested If the purchaser elects to use a third party freight forwarder or another shipping carrier the purchaser is thereby responsible for the shipment Mesa Labs periodically makes engineering changes and improvements on instruments of its manufacture We are under no obligation to retrofit these improvements and or changes into instruments which have already been purchased For refund of new products equipment must be in a new and unused condition A restocking fee of 30 of the product s value will be charged for returns after thirty 30 days Mesa Labs will not accept any returns after ninety 90 days No representative of ours has the authority to change or modify this warranty in any respect MesaLabs Mesa Labs 10 Park Place Butler NJ USA 07405 Phone 973 492 8400 Toll Free 800 663 4977 Fax 303 484 4992 Email csbutler mesalabs com Web www mesalabs com 2015 Mesa Labs MKO1 49 Rev A
16. r an extended period please follow these guidelines Always store it in a clean dry place DryCal 800 Specifications Interchangeable Flow Cell Models Model Number 800 3 800 10 800 24 800 44 800 75 Flow Range 0 5 50 mL min 5 500 mL min 50 5 000 mL min 500 50 000 mL min 1 100 L min Accuracy 0 25 0 5 50 sccm 0 15 0 15 0 15 0 15 Standardized 0 002 sccm Time Per Reading 1 60 seconds 3 135 seconds 3 90 seconds 1 35 seconds 1 50 seconds Weight 80 0z 2300 grams 85 oz 2413 g 86 oz 2439 g 88 oz 2507 g 160 oz 4535 g Inlet Fitting 1 8 in 1 4 in 1 4 in 1 4 in 1 2 in Outlet Fitting 1 8 in 1 4 in 1 4 in 1 2 in 1 2 in Specifications based on averaged readings Accuracy is stated as a percent of reading including standardization if applicable Basics Dimensions Cell Model 3 9 0 x 4 0 in 229 x 102 mm Dimensions Cell Models 10 24 44 13 3 x 4 0 in 337 x 102 mm Dimensions Cell Model 75 14 8 x 5 in 375 x 102 mm Dimensions Base H x W x D 3 9 x 8 5 x 12 6 in 99 x 216 x 320 mm Weight Base 5 Ibs 2268 g Gas Compatibility Non corrosive non condensing non combustible gasses Less than 70 humidity Usage Flow Mode Suction and Pressure Configuration Base with modular interchangeable flow cells five Temperature amp Pressure Sensors Yes in the flow stream of each interchangeable flow cell Reading Modes Single Auto or User Specified Burst AC Adapter Plug 12V DC gt 3 0A 2
17. rtable primary standard that s ideal for both volumetric and standardized flow applications where a high degree of measure ment accuracy is required Before you get started we recommend taking a few moments to review this manual and familiarize yourself with the DryCal 800 If at any time you have questions regarding its operation please contact Mesa through our web site www drycal com or call us at 973 492 8400 to speak with one of our knowledgeable customer support representatives Register Your Product Before we begin please register your product with Mesa Labs To complete your registration log on to our website at http drycal mesalabs com product registration and complete the registration form Registration of your new Proven DryCal product ensures your instruments warranty claim information is properly documented in Mesa s database and provides you the peace of mind that your new calibration equipment is covered under our warranty service plan Addi tionally this registration will allow you to better manage your service and calibration dates through the receipt of timely reminders at 45 and 15 days prior to the recommended calibration date of your instrument Mesa recommends annual service and calibration of your Proven DryCal primary gas flow standard as a periodic quality assurance measure as well as to provide you and your organization with a defensible audit trail of premier quality About Your DryCal 800 The DryCal 800 is
18. sed of a borosilicate glass tube housing a precision machined graphite piston The flow cell also contains an integrated temperature sensor and barometric pressure transducer in the gas flow stream for instant conversion of the volumetric readings into standardized flow DryCal Pro software captures flow data from your DryCal instrument to a PC You can also utilize Mesa s DryCal Pro software package available for download from http drycal mesalabs com drycal pro software The DryCal Pro software allows you to e View and plot the flow data in real time e Export your data to a Windows environment e Enter flow data from a flow meter and compare the flow measurements from your DryCal precision calibrator e Upload the latest version of the firmware to your DryCal Adapter Ring Guide Pins Base Connector Gas Inlet Gas Outlet USB B Port Clock Signal Port A C Power Port RS 232 Serial Port On Off Switch Back Front and Side Unpacking Checklist Your DryCal 800 has been packaged with care and includes all components necessary for complete operation Please take a moment to check that you have received the following items If you believe you have not received a full shipment or if you have any questions please contact Mesa immediately Your DryCal 800 Base with the following Your DryCal 800 Flow Cell Includes e DryCal 800 Electronic Base e DryCal 800 Flow Cell e Power Supply Adapter e Leak Test Plug e Leak
19. ter column WC above ambient pres sure Taking Readings The DryCal 800 default is preset for ten 10 readings in an averaging seguence This parameter is user definable from the Operation menu DryCal 800 Flow Range 5 500 ccm Installed Cell 10 LOW MEASURE gt 1 Press Measure on home screen Flow 73274 sccm 018 of 100 STP 320F 14 7 psi Average 7496 sccm psi 7093 TE e Press the Mode button to cycle through options for single burst or continuous readings e Press Start button to begin measurements e Press the Stop button to stop current flow reading and open valve Setting User Preferences The DryCal 800 offers enhanced electronics options to allow the user to define parameters specific to an application These parameters may be entered from the Operation screen or by pressing the blue section of the Measure screen Using Sensor Factors for MFC and MFM Calibration MFCs and MFMs are originally calibrated by the manufacturer with a specific gas When you use an MFC or MFM with a different gas than the one used in the last calibration you must apply a flow correction factor to account for differ ent gas properties that affect flow The MFC or MFM manufacturer can provide the appropriate sensor factor value The user can also apply this flow correction factor to the DryCal 800 readings To enable your DryCal 800 to scale its actual flow measurements to match the adjusted flow from the MFC or MFM input t
20. th you and Mesa during this process and ensures a fair and efficient service experience If sending your DryCal 800 for repair or evaluation rather than elective Recertification please contact Mesa for techni cal support or troubleshooting assistance prior to shipping the unit We will first attempt to resolve the situation over the phone or via email If you ve provided us with a detailed description of your DryCal 800 issue and application details and we re unable to resolve the situation by telephone or email we ll issue you a service quote for the prompt return of your DryCal 800 for evaluation Please note that Mesa will make every attempt to verify your issue as we want you to get the most out of your DryCal 800 However if we are unable to detect a product issue or if we determine that the issue is application related rather than product related we reserve the right to charge an evaluation fee Shipping When shipping your DryCal 800 please ensure that the packaging is adequate to protect the instrument Whenever possible your DryCal 800 should be shipped in its original packaging or within a hard case such as a Pelican carrying case available for purchase from Mesa We highly recommend using a standard freight carrier e g FedEx UPS that supplies tracking numbers and insuring the product against damage in transit Mesa is not responsible for damage that occurs during shipment Storage If you need to store your DryCal 800 fo
21. top Gas pressure and temperature inside the tube are displayed on a constant basis regardless of whether the unit is operating By pressing on the blue and grey portions of the screen allow you to access additional user defined parameters By pressing the blue flow measurement section you can change the sensor factor PTVM flow standardization stan dardization temperature and reading average number Pressing the grey gas temperature pressure section allows you to change the pressure and temperature units This option is only available through this menu Operations Screen Type ir 1000 Eier gt Mus 1 000 A Standardization Temperature F gt Number in Average 100 The Operation screen allows you to change measurement parameters including sensor factor PTVM standardized or volumetric flow standardization temperature and reading average number When you are done changing these values pressing CONFIRM will take you to the Measure screen These input parameters can also be accessed by pressing the plus symbol in the blue portion of the Measure screen Date Time Delay Screen D DATE TIME DELAY The Date Time Delay screen allows you to change the date time and delay between individual measurements To edit these fields press on the gray box of the field you would like to change The value highlighted will change by using the arrows on the right About Screen 8 U About Base S N 123456 Firmware Rev 1 00
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