Teledyne 8800A Скачать руководство пользователя страница 47

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8800
Series

Trace Mois

ture

nalyzer I

truction

Manual Ap

pend

ices

: Se
ns

Me
ch

flats for 1 " wrench

~1.45"

14mm x 1.25mm

3/4"-16

Viton A O-ring

female BNC connector

2.230"

3" min

Removable Sensor encapsulated
in 100 sintered stainless steel,
unscrew to remove.

5/16"-24

tension washer

-50

LISTED

76NM

cable with molded-on
male BNC connector

Содержание 8800A

Страница 1: ...TECTIVE EQUIPMENT MAY BE REQUIRED WHEN SERVICING THIS SYSTEM HAZARDOUS VOLTAGES EXIST ON CERTAIN COMPONENTS INTERNALLY WHICH MAY PERSIST FOR A TIME EVEN AFTER THE POWER IS TURNED OFF AND DISCONNECTED ONLY AUTHORIZED PERSONNEL SHOULD CONDUCT MAINTENANCE AND OR SERVICING BEFORE CONDUCTING ANY MAINTENANCE OR SERVICING CONSULT WITH AUTHORIZED SUPERVISOR MANAGER DANGER P N M8800A B 12 19 01 ECO 01 0382...

Страница 2: ...o _______________ Your Representative is Except as may be provided by contract this document and all specifica tions and drawings contained are the property of Teledyne Analytical Instruments are issued in strict confidence and shall not be reproduced or copied or transmitted in any form or by any means or used as the basis for the manufacture or sale of apparatus programs or services without perm...

Страница 3: ...ent or repair of the instrument or sensor at the manufacturer s sole option as covered by the manufacturer s war ranty In no event shall the manufacturer be liable for any incidental consequential or special damages of any kind or nature whatsoever including but not limited to lost profits arising from or in any way connected with this instrument or items hereunder whether alleged to arise from br...

Страница 4: ...Section 3 describes the instrument s electrical mechanical and user interfaces This manual is intended for those already familiar with the installation use and maintenance of analytical or process instrumentation Those acquainted with other Teledyne dewpoint measurement products such as the 8800P portable trace moisture analyzer or the 8800T will benefit from the com monality of the user interface...

Страница 5: ...l Maintenance Policy In cases when equipment fault is suspected please notify your representative of the problem be sure to provide them with model and serial numbers If the problem can not be resolved then ask for a Return Authorization Number RAN and shipping instructions Issuance of an RAN does not automatically imply that the equipment is covered by our warranty that will be determined after w...

Страница 6: ...ectrical Connections 12 3 3 2 1 Connecting Power 12 3 3 2 1 1 AC Mains Electrical Power Connection 13 3 3 2 1 2 Low Voltage DC Powered Option Electrical Power Connection 13 3 3 2 2 Sensor Connection 13 3 3 2 3 Wiring the Alarm Contacts 13 3 3 2 4 Interfacing to the Analog Output 14 3 3 2 5 Interfacing to the RS 232 option 15 3 4 Operating the Instrument 15 3 4 1 Starting up 15 3 4 2 Display Conven...

Страница 7: ...Appendix G Dewpoint Response time Analysis 46 Appendix H Sample Gas Filter Considerations 48 Appendx I 8800 Series Trace Moisture Analyzer Grounding Considerations 49 Appendix J Analog Output vs Dewpoint 50 Appendix K RS 232C Interface Protocol 52 Appendix L Procedure for Exchanging 8800 Series Sensors 55 Appendix M Uncertainty in LBS ppmV calculations 56 Appendix N Extractive Sampling System Inte...

Страница 8: ...k automatic recalibration using room air all instruments pre calibrated at fac tory Capability to enter up to 15 NIST NPL traceable calibration points at factory depending on order Manual Self Calibration a single point calibration using a known standard gas High acccu racy can be maintained even in the most harsh applications Pressure correction built in software calculation of dewpoint at a pres...

Страница 9: ...8800 Series Trace Moisture Analyzer Instruction Manual 2 ...

Страница 10: ...e the container immediately after removing the sensor to avoid degradation of the desiccant Do not throw away the sensor container you may use it again to transport the sensor between locations to store it between uses or to ship it back to the factory for certification The con tainer can be attached to the sensor cable by trapping the cable with the lid strap Do not expose the sensor to corrosive...

Страница 11: ...and cUL for ordinary use Intrinsically Safe configurations for NEC standard IS Simple Apparatus UL for CENELEC standard IS Simple Apparatus DEMKO refer to labeling 2 3 Sensor Installation Sampling Techniques Keep in mind that the moisture content at the sensor is not only due to the moisture of the gas being measured but also due to desorption of water from tubing trapped moisture at the inter con...

Страница 12: ...ariations in line pressure affect the reading of the sensor because dewpoint varies with pres sure If the gas line is under pressure it is more likely that water condensation occurs which may damage the sensor Under a pressurized system removal of the sensor without the installation of isolation valves can be dangerous If in situ installation is required bypass mounting is preferable make sure to ...

Страница 13: ...strument or a pressure monograph or calculator if the sensor is mea suring at different pressures If readings at line pressure are necessary it is recommended to measure at ambient pressure and to use the instrument s pressure compensation feature to calculate the dewpoint at line pressure Refer to Viewing Dewpoint Mode section 3 4 4 1 Please make sure that The sample is taken from the upper surfa...

Страница 14: ...upstream of the sensor make sure these do not contain rubber or other hygroscopic materials 2 4 Mechanical Installation The sensor probe has two thread sizes for mounting to the sample cavity where the dewpoint will be measured see appendix C Various optional fittings are available for direct connection into existing system openings refer to appendix D Ask your representative for a Sample Cell if ...

Страница 15: ...tainless steel Flexible con nections should be made with PTFE pipe NEVER use rubber or plastic pipe Comparison of readings with manual cooled mirror instrument This type of indicator reads about 10ºC dry at about 50ºC dewpoint due to tempera ture gradients within the device The error increases at drier levels Display Shows SAT Prolonged exposure to wet gas Dry down the sensor install sensor in eit...

Страница 16: ... If this is not avoidable use resilient mounting If in doubt call your representative 3 1 1 Electromagnetic Compatibility Considerations The 8800 Series Trace Moisture Analyzer has been designed and verified by testing to meet the requirements of the EC Council EMC Directive 89 336 EEC for Industrial Scientific Medical equipment The sensor ground is isolated from the AC ground logic ground 4 20mA ...

Страница 17: ...coaxial cable or RG6 for cable longer than 100 A 6 foot cable is provided as a standard other lengths ordered as options When changing cable refer to cable compensation section Input resolution 0 1 C dewpoint Indicators 3 5 digit backlit LCD with custom legends audible indicator Engineering units C F PPM LBS H2O mm scf gm H2O m3 Controls Four push buttons user s selections are stored in EEPROM Out...

Страница 18: ... the user s mounting panel To achieve a good environmental seal the 8800A Trace Moisture Analyzer must be mounted onto a rigid flat panel with a cutout according to the specified dimensions using the provided panel gas ket and all four provided mounting brackets The instructions listed below should be followed If the clip on mounting brackets are installed on the instrument enclosure remove them M...

Страница 19: ...wired to operate from AC Mains Power of 100 to 250VAC 50 60Hz 10VA the instrument has an internal 0 5A 250V fast acting fuse However the 8800 Series Trace Moisture Analyzer can also be optionally ordered 21 C 20 NO 18 Not Connected 14 Not Connected 3 Not Connected 19 NC 17 C 16 NO 15 NC ALARMS LO HI Ordinary relay contacts 10A 250VAC or 30VDC Hermetically Sealed relay contacts 3A 120VAC 11 RET 10 ...

Страница 20: ...C LIVE 1 AC NEUTRAL 2 and AC GROUND 4 A switch or circuit breaker shall be included in the installation It shall be in close proximity to the equipment and within easy reach of the operator It shall be marked as the disconnecting device for the instrument For the 8800B use the 1 2 NPT conduit fitting as the power cable access do not use the cable grips they are for low voltage use only 3 3 2 1 2 L...

Страница 21: ... terminal is on pin 7 it is labeled A OUT and the negative is on pin 8 it is labeled A RET The ground of the Analog Output is connected to the frame AC power ground but it is isolated from the sensor ground see section 3 1 1 Instruments ordered with Voltage output are configured at the factory with appropriate resistors across the current loop output such that when operated in the 0 24mA mode they...

Страница 22: ...oper operation This jumpering may be accomplished at the DB9 or DB25 connector CAUTION Connecting the RS 232C interface on instruments which do not have the option installed will damage the instrument Refer to appendix K for details on the protocol used on the RS 232C interface 3 4 Operating the Instrument 3 4 1 Starting up The instrument is ready for use as soon as the power cabling is connected ...

Страница 23: ... 999 000 Twelve examples follow for each the number and units desired to be displayed are shown in italics depicted immediately below them is the resultant 3 digit LCD display 3 4 3 Push Buttons Four push buttons provide user control of the instrument They are designated MODE UP DOWN and PRESSURE CORRECT These push buttons are vertically lined up on the upper left side of the bare circuit board wi...

Страница 24: ...unit will return to Viewing Dewpoint mode if no buttons are pressed for 30 seconds unless it is performing a cali bration 3 4 4 1 Viewing Dewpoint Mode In this mode the user can view the dewpoint this is indicated by the presence of the DEW POINT legend on the lower left of the display The available engineering units in which to view the moisture content are C F PPM LBS and G M3 the UP and DOWN bu...

Страница 25: ...and F are affected by pres sure correction by reporting what the dewpoint would be at the Gas Pressure when the dewpoint is what is measured at the pressure at the sensor However this also implies that whether pressure correction is applied or not the PPM LBS and G M3 readings are affected by the setting of the sensor pressure A long press of the Pressure Correct button while in the pressure corre...

Страница 26: ...tate as if the dewpoint is high e g A X H 2 Fail Low put the alarm in a state as if the dewpoint is low e g A X L 3 Fail Flashing Energize Deenergize the relay alternating once every 2 seconds e g A X F 4 No Special Handling if sensor is open the alarm is in a low dewpoint state if the sensor is shorted the alarm is in a high dewpoint state e g A X N Setting or checking the present setup of the al...

Страница 27: ...r long periods of usage and a suspicion of performance degradation Single point calibration the calibration curve derived from SpanCheck is modified at a single point using the output of the sensor as it is exposed to a gas with a known dewpoint This cal ibration is most useful when the sensor is exposed to hygroscopic substances which constantly alter the equilibrium between the sensor and the ga...

Страница 28: ... display will show CNF prompting you to confirm that you want to start the calibration procedure You can abort the calibration procedure by pressing the MODE key 4 Remove the sensor from its packaging container or sample stream so that the porous metal filter is visible and the sensor is exposed to in hand micro climate refer to explanation below Close the packaging container as soon as you have r...

Страница 29: ...could occur and super saturate the sensor For the same reason avoid exhaling directly onto the sensor 3 4 4 3 2 Single Point Self Calibration manual or scheduled The instrument is calibrated at the factory with the sensor it is shipped with and does not need to be re calibrated prior to installation Single point calibrations should be performed whenever the measurement is in question or on a sched...

Страница 30: ...new single point self calibration values and finish by going to the display dewpoint mode Note that the program will spend atleast 3 minutes on this stage of the calibration The sensor may now be exposed to the sample gas and the instrument will display the mea surement using the newly acquired calibration values Scheduled Timer Activated Single Point Self Calibration procedure for instruments wit...

Страница 31: ... buttons are pressed the Self Calibration will be aborted however everything set until now will remain in effect Press the UP button to confirm the Self Calibration The display will show SLF CAL 41 5 indicating that self calibration has started and it is measuring a dewpoint of 41 5 C this is also the entry place into the procedure when the scheduled time elapses Now the instrument will freeze the...

Страница 32: ... the Setup State power up the unit or reset it from the serial number Mode and hold the MODE key pressed while the unit is initializing Refer to Appendix B for a flow diagram of the SetUp State The setup state provides eleven capabilities each one controlled from its own mode Depressing the MODE button navigates through the modes in the following order Select Alternate Display Units Select Sensor ...

Страница 33: ...e this range may cause inaccuracies the dewpoint must be kept stable during calibration and it must be measured accurately by a reference instrument such as a chilled mirror One must also note the state of pressure compensation and turn it on or off as applicable to the reference The necessary steps are described below also refer to the Set Up State flow diagram in Appendix B a Make sure that the ...

Страница 34: ...ng and holding either the UP or DOWN buttons will save the locked or unlocked setting depending on the button and reset the instrument This feature is useful in situations where it is difficult or undesirable to power off the instrument Pressing the MODE button will navigate to the Sensor Cable Compensation mode Secured Password Protection Instruments may be specially ordered with password protect...

Страница 35: ...r a few seconds Then it will show CNF CBL SHR Confirm Cable Short e Short the BNC connector and press the UP key the unit will show SHR and beep for a few seconds Then it will show CNF CBL OPN again f Leave the BNC connector open again and press the UP button The instrument will show OPN and beep for a few seconds Then it will show END The compensation data will be retained even if power is turned...

Страница 36: ... possible error unexpected messages that may be displayed on the instrument For each message the table has explanations for the reason and if necessary a sug gested action to remedy it The instrument contains a fuse which may open if the instrument is subjected to voltages exceed ing the specifications Under these circumstances the unit display will be blank and the instrument will not draw any cu...

Страница 37: ...eading is too low to be from a saturated sensor thus can not be calibrated 2LO While Compensating for cable length the measurement did not correspond to the expected open or short values cable tests Check the means of opening shorting the sensor cable see section 3 4 5 11 2HI ERR EEP EEPROM write cycle not completed miscellaneous if this persists return for service LOC Attempting to modify a locke...

Страница 38: ...1 3 7 Maintenance The 8800A and 8800B instrument enclosures may be cleaned when necessary using a damp moist cloth The sensor should not be cleaned as it may be damaged Spare parts may be ordered through your representative ...

Страница 39: ...8800 Series Trace Moisture Analyzer Instruction Manual 32 ...

Страница 40: ...erface bit s Binary digit s ones and zeros BNC a connector type used with coaxial cables bypass mounting sensor mounting in a slip stream of sample which feeds back into the process stream CE Conformitée Europeane symbol affixed to a product indicating its conformance with directives issued by the European Community EC CENELEC Comité Europeen de Normalisation Electrotechnique European Committee fo...

Страница 41: ...R Data Set Ready a label for a RS232 interface control line DTR Data Terminal Ready a label for a RS232 control line EEPROM Electrically Erasable Programmable Read Only Memory a device that can remember information even when it has no power applied to it electromagnetic compatibility compatibility with directives issued under CE or with FCC stan dards concerning electromagnetic interference EMI El...

Страница 42: ...rating error checking into a RS232 data transmis sion on a character by character basis to check if the data has been received correctly pounds of water per million standard cubic feet LBS H2O mmscf the mass of water vapor present in unit volume of moist air at standard temperature and pressure a measurement unit for moisture typically used in the natural gas industry ppm parts per million usually...

Страница 43: ...ers valves and other accessories saturate reaching maximum holding capacity sintered produced by a process of compacting and heating metal powder resulting in the formation of a solid permeable object slip stream partial stream extracted from a process stream of which it is repre sentative SpanCheck method to check the response of an HTF sensor at the upper end of its measurement range stability a...

Страница 44: ...te ignore error see Self Cal user interface next page When a third Alarm Relay is installed setup menu options will appear here similar to Relays 1 2 but with both the HI LO legends active This is also the dewpoint alarm for units with resetable Audio Visual Alarm 30 seconds anywhere other than Calibration without key press appears when changing settings of locked unit Viewing Dewpoint Set activit...

Страница 45: ...o display Dewpoint Confirm Entry into Self Cal Menus Set Scheduled Calibration Interval in hours 0 blank Scheduled SelfCal disabled but SelfCal corrections not affected View Hours left until next Scheduled Calibration The Self Cal Corrections will not be used in dew computations from now on until another Self Cal is performed manually or scheduled Schedules are not affected Set Reference Gas dewpo...

Страница 46: ...ype XTR 100 XTR 65 measure attenuation of sensor if no buttons pressed for 3 seconds shows the dewpoint for a moment SET Select Span of Analog output 0 to 24mA or 4 to 20mA Factory default is blank there is no alternate display CAUTION These are set properly at the factory with the shipped sensor Do not modify these settings unless you are changing the sensor C C F DEWPOINT value C value C Hi Lo a...

Страница 47: ... Sensor Mechanical flats for 1 wrench 1 4 1 45 14mm x 1 25mm 3 4 16 Viton A O ring female BNC connector 2 230 3 min Removable Sensor encapsulated in 100 sintered stainless steel unscrew to remove 5 16 24 tension washer H P C 500P LISTED 76NM cable with molded on male BNC connector ...

Страница 48: ...8800 Series Trace Moisture Analyzer Instruction Manual Appendices 41 Appendix D Optional Sensor Fittings ...

Страница 49: ... R P E D O M MADE IN USA PS RET RXD TXD A OUT A RET SIGNAL RET SIGNAL IN ACH ACN DEWPOINT TRANSMITTER C US R 0 627 0 146 0 195 0 335 0 965 4 370 5 145 4 935 4 630 0 155 3 502 3 900 0 158 2 315 0 805 1 853 1 453 1 052 1 030 0 662 0 700 0 740 2 140 0 197 5mm typ 0 350 3 875 2 125 4 250 score line break to fit in PM box C L C L 0 51 0 44 0 5 1 38 A u d i o I n d i c a t o r Pluggable Screw Terminal C...

Страница 50: ...Series Trace Moisture Analyzer Instruction Manual Appendices 43 sions Standard mounting with clip on compression brackets Environmentally sealed mounting with gasket and clip on screw clamp mounting brackets ...

Страница 51: ...8800 Series Trace Moisture Analyzer Instruction Manual Appendices 44 Appendix E continued 8800B Series Trace Moisture Analyzer Enclosure Mounting Dimen sions ...

Страница 52: ...he pores of the Aluminum Oxide This upper end is an excellent indication of the total pore volume while the lower end of the curve is an indication of the distance between area of the capacitor plates electrodes this is the intrinsic capacitance of the sensor Therefore knowing these two points a sensor can be cali brated with compensation for small manufacturing deviations As the sensor is used in...

Страница 53: ...ate was 3 LPM The dewpoint was generated with a computer controlled mass flow valve gas dilution dewpoint generator and was verified with a NIST and NPL calibrated MBW chilled mirror The system was allowed to achieve equilibrium at 40 C dp overnight then the dewpoint was abruptly changed to 60 C the change is depicted below as time 0 The graph below shows the percent change of recorded dewpoint C ...

Страница 54: ...y notes We can comfort ably make the claim that the XTR 100 sensor is faster than any on the market today To compensate for their sensors slow response some manufacturers resort to software accelera tion of response time even though this scheme provides a seemingly faster response to a single step change it creates great errors in real systems where multiple changes occur consecutively in differin...

Страница 55: ...recise measurements quickly deteriorates for dewpoints below 55 C With this in mind the user should select the appropriate filter construction materials It is impor tant to note that a stainless steel housing filter will not cause measurement errors however if the filter element inside the housing is made of hygroscopic fibers then there will be a delay intro duced in the measurement Chilled mirro...

Страница 56: ...puts Keep in mind that in general a ground loop on a digital line such as RS 232 will not cause problems 3 The Earth Safety Ground AC GROUND at pin 4 should not be omitted since the RFI filter capacitors will cause half the line voltage to develop at the instrument s ground This may have safety and EMI implications 4 When installing DC powered instruments 15 to 30VDC at pins 12 and 11 similar cond...

Страница 57: ... C or F will cause the analog output to be linearly proportional to dewpoint When monitoring in ppmV or LBS or G M3 the analog output low high ranges may have to be adjusted to provide a useful output Consider an example where the area of interest to be moni tored is 10 to 100 ppmV and the analog output is set up with the factory defaults of 100 C to 20 C which is 0 014 to 23612 ppmV then the curr...

Страница 58: ...t reading in ppmV Instrument reading in LBS of H2O million cubic feet 10 100 1000 10000 4 1mA 5mA 0 1 1 10 100 1000 12mA 8mA 20mA 4 5mA 4 20 mA output 0 56 LBS 60 C 10 66 ppmV 1 97 LBS 50 C 38 83 ppmV 49 3 LBS 20 C 1019 3 ppmV 289 1 LBS 0 C 6063 8 ppmV Low AO range 100 C High AO range 20 C L o w A O r a n g e 6 5 5 C H i g h A O r a n g e 3 8 5 C ...

Страница 59: ...for example Escape is depicted as E SC this signi fies a single byte hex 1B Optional characters or command arguments are encompassed with brackets The commands may be sent in either upper or lower case Arguments may be delimited with space or comma HELP command Lists all of the available commands send H ELP C R receive Help Data SNC R L F Who Reset LoginC R L F DATA command Selects the reporting f...

Страница 60: ...is in HH MM SS format The alarm status appears only if alarms are installed it is indicated with a character string HiAlrm or LoAlrm or NoAlrm If an error condition exists then the report will have the following format B L B LErrorStringC R L F The ErrorString may be one of the following Error SensOpen or Error SensShort or Error SensSat In the GRAPHIC mode the instrument will transmit Epson Graph...

Страница 61: ...ommand for example receive B L 59 3degCS P01 23 45S PNoAlrmC R L F The default factory setting for the instrument is to respond in numeric format in the user chosen units See the section about the DATA command for more details Serial Number Command send SNC R receive SerS PNumS PnnC R L F where nn is the instrument serial number Who Command send W HO C R receive DevS PType XDTS PVer 3 1C R L F Res...

Страница 62: ... MODE key to go to the Set low dewpoint mode The display will show the cur rently entered low dewpoint Use the UP or DOWN keys to select the value which appears on the shipping container label 5 Press the MODE key to go to the Calibration Midrange Adjust mode The display will alternately show CAL and ADJ Press the UP key once to see the entered calibration adjustment value The display will alterna...

Страница 63: ...S ppmV calculations due to 3 C measurment accuracy Calculated ppmV Calculated LBS H2O mmscf 80 75 70 65 60 55 50 45 40 35 30 25 20 0 5 0 5 0 25 2 5 0 05 0 6 0 7 0 8 0 9 1 1 0 1 2 3 4 5 5 6 7 8 9 10 10 20 30 40 48 38 34 29 24 19 15 44 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000 Measured Dewpoint C Dewpoint 3 C Dewpoint 3 C ...

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Страница 68: ...tion 20 B board dimensions 42 box 10 box dimensions 42 44 buttons 16 C cable access 12 compensation 28 grips 12 length 13 sensor 4 cabling alarm relay contacts 13 analog output 14 power 12 requirements 10 RS 232C 15 sensor 13 Cal Adj 26 calibration adjustment 26 calibration method 4 capacitance 4 CE 4 10 CENELEC 13 certifications 4 10 changing sensors 55 checking alarms 19 chlorine 3 circuit board...

Страница 69: ...e gases 3 flow diagram operating state 37 self calibration 38 set up state 39 flow meters 7 flow range 4 flow rate 7 front panel 17 fuse 29 G G M3 17 gas pressure 18 gases corrosive 3 incompatible 3 gasket 7 11 glove boxes 5 glycol 20 grams per cubic meter 17 ground loops 49 grounding considerations 49 H harsh applications 20 Hazardous Areas 14 HCl 3 hermetically sealed relays 14 high pressures 3 ...

Страница 70: ...ample flow range 4 sample treatment 4 selecting sensor type 26 self calibration flow diagram 38 sensor cable compensation 28 connection 13 container 3 dimensions 40 exchange procedure 55 pressure 18 signal cable 4 theory of operation 45 types 26 serial number i 25 setting alarms 19 setup state 25 set up state flow diagram 39 shipping container 3 shock 3 9 shut off valve 7 signal cable sensor 4 sin...

Страница 71: ...Index 61 W warning labels iii warranty iv water 3 weather proofing 9 weight 10 wiring 9 alarm relay contacts 13 analog output 14 power 12 requirements 10 RS 232C 15 sensor 13 ...

Страница 72: ...ments A Business Unit of Teledyne Instruments SENSORS ANALYZERS SYSTEMS SCIENTIFIC SOLUTIONS 16830 CHESTNUT STREET CITY OF INDUSTRY CA 91749 1580 U S A 626 961 9221 626 934 1500 TWX 910 584 1887 TDYANYL COID TAI FAX 626 961 2538 ...

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