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GAS-CADA

1. 34 Pin assignment of temperature and external pressure transmitter connectors 35 D Sub CXTENSIOM COMEC aa een 35 Serial connection between GAS CADA and PC 36 Installation of accessories for GSM GPRS communication 36 OPERATION ES ass sanu a a e a yaa ata mas 38 HECHNIC Al SPCCINCANOMS 2 uuu u uuu n uba ct cube eier Bu 38 Mechanical parameters a aa 38 AIMDICTE DAT AIM CUCM S as uu awu ee aaa as haqa ee ee acted 38 Waid eS rors Ec Ol yu u u ee sr yu x Z ie eee ere ee ee etree ey eee eee eater 38 POWEr SElDDIyuu so suyupas matin aS ki mau rade ma mrguteestasenanuceeodas ants 38 Metrological parameters and device accuracy 39 ligi alilia y tumis n Su a Sa Oi an eee x aS Sup usasapa sasan mas 40 J igi aliOu D S u uuu ee ua tsunu D sau ass ma nee 41 Interfaces for communication with master system 41 Economical operational mode of the device a a 42 Communication with the device a a
2. 42 OUMU GENE alii kuy iu u sS a u Me aS bt Su ss 42 Battery lile UNO es ae ee D m h a as has Sapa see 43 EP203 SUPPIYING ballerlyuy u u Su huuu uka yw kuka esse 43 BACKUP DAC RY en ma uns t Qa L S GS una A Mh 43 Self discharge of batteries a a sarrsaarsss sasa8 43 MAINTENANCE 22 u 2er 44 Replacing TIG TUS CS ee ee else 44 Replacing INE DANGCIICS anne Bean 44 WARRANTY S S mu ee A CS Aa Sut aS cee shpa sss 45 APPENDIX WITH TABLES AND FIGURES un use ea a ee 46 SAFETY INSTRUCTIONS AND WARNINGS uuu 22 22 uD ae ee et 48 IOM January 2007 Page 3 GAS CADA vemm tec LIST OF FIGURES Figure 1 Inside and outside view with input board and terminal blocks i n variant T Figure 2 Processing and counting the pulses 11 Figure 3 BIOCK diagram OF the d Vi68 uuu uu u u a aaa a abya 12 Figure 4 Hierarchical menu structure a nennen anne nennen 14 Figure 5 BASIC MON l a uuu Ne Saat k aaa las EEE EEE adalat eas 15 Figure 6 L cations OF ING SC al cuu Qua tn u SS su Te 23 Figure 7 Application example measurement in a single line regulating station 25 Figure 8 Application example measurement and monitoring in a dual line regulating
3. a a r nenn nennen 31 Table 7 Recommended Cable type S anna Een 32 Table 8 Pin assignment external power supply and binary inputs 33 Table 9 Pin assignment binary outputs and RS 232 RS 485 communication 34 Table 10 Pin assignment temperature and pressure transmitters 34 Table 11 Pin assignment of temperature probe and external pressure transmitter connectors 35 Table 12 Pin assignment of the D Sub9 extension connector 35 Table 13 Battery life time for various operation modes 43 Table 14 Fl FO Tuse paralnel 6rS2u uuu uuu eu 44 Table 15 Technical standards rules and guidelines 46 Page 4 IOM January 2007 GAS CADA vemm tec 1 LIST OF TERMS AND SYMBOLS Term Description Unit CRO an checksum used for data security dual channel device This GAS CADA device includes two sets of measured values for example it can independently perform metering and calculation based on the sets of values for 2 gas meters EINIG Zuna uuu s electromagnetic compatibility EN ee nno asa electromagnetic interference firmware software programm
4. Figure 16 Terminal block of the external power supply and binary inputs SE I ote z LE is i s Eo gW il Se Cem POWER Dil DI2 D3 Did INPUTS I IOM January 2007 Page 33 GAS CADA vemm tec 4 8 2 Terminals of binary outputs and RS 232 RS 485 communication Table 9 Pin assignment binary outputs and RS 232 RS 485 communication Group Direction Description j OUTPUTS DO1 DOA digital output S po DO DOR digital output _ DOS DOB dA ta po DO4 DO4digtaloutput x U jinput positive pole of the digital output powering GND2_ sf common negative pole of digital outputs _ TxD output RS 232datasignal o x RD input RS 232datasignal _ GND1 common negative pole of RS 232 CTS inut powering of the RS 232 interface _ _ RS485 GNDI negative pole of the RS 485 powering m U input positive pole of the RS 485 powering DD D1 RS 485 data signal inverted RS 485 data signal non inverted Figure 17 Terminal block of binary outputs and RS 232 RS 485 communication 4 8 3 Terminals for temperature and pressure transmitters Table 10 Pin assignment temperature and pressure transmitters Signal _ Direction Description gt GND 2 2 negative pole of the transmitter powering positive pole of the transmitter powering D data signal of the RS 485 internal bus inverted D 222 2 data signal of the RS 485 inter
5. variant without terminating imp lt 100 m max cable length of the i n variant without terminating imp lt 100 m terminated by imp 120 Ohm 100 1200 m IrDAg interface z serial communication interface IrDA version 1 2 communication protocol IrDA Lite communication speed 9600 Bd 57600 Bd IEC 110 interface serial communication interface IEC 1107 communication protocol Optional according to firmware version communication speed 9600 Bd 5 2 Economical operational mode of the device In order to ensure the indicated battery life device settings specified in Section 5 3 must be kept If the economical setting limits the application performance an external power supply may be used to feed the device In this event the supplying battery becomes a backup power supply activated only during blackouts The device operates in the economical mode in the event of external power supply failure The following paragraphs describe design measures allowing low power consumption of the device 5 2 1 Communication with the device Communication via RS 232 and RS 4 5 serial lines Upon data arrival detected by the serial interface the device switches automatically from the economical mode into the data receipt mode The device stays in the data receipt mode for at least 12 s after the last character has been received Then it returns back to the economical mode Communication vi
6. The processor activities are supported by other functional blocks such as power supply battery backup battery with backup locking reset with watchdog display keyboard circuits RS 232 RS 485 IEC 1107 and IrDA communication interfaces etc Figure 3 Block diagram of the device Communication with master system Power suppl Processor Interface RS 232 k RESET WATCHDOG Io len modem cable 1MB FLASH RS 485 k 32kB RAM Optical LL IrDA HIE 01 interf Interface RS 485 Pressure converter EDT 23 Temper converter EDT 34 Pressure converter EDT 23 Temper converter EDT 34 Page 12 IOM January 2007 GAS CADA vemm tec 2 10 Keyboard and display Local control of the device and indication of measured and other values can be realized using the six button keyboard and the alphanumeric display with 2 x 16 characters Values to be displayed are selected through the menu but they depend on parameters saved during configuration via serial interface and software GASCcomm The content of some menu items is user defined Device parameters cannot be set through the keyboard 2 10 1 Display characteristics Automatic refresh of changing parameters with a 1 s period Auto repeat simulates action of key being pressed can be used for archive browsing for example Texts with diacritical marks entered on a PC will be displayed without these marks The display enters into the basic display mode ac
7. 16 pA 5 20 V outputs off max 250 pA 5 20 V outputs on max 20 mA 20 30 V 15m 30 V 100 mA 10 Ohm primary and base volume output etc odorization control programmable 0 1 s 25 s 0 1 s step programmable 0 1 s 25 s 0 1 s step error signalling control etc connection of transmitters extension modules RS 485 communication speed 38400 Bd transmitter feeding voltage 2 9 36V length of cables sum of all transmitter cables 100 m gt 5 1 8 Interfaces for communication with master system All interfaces share common communication channels Metallic interfaces galvanic separation 2 5 kV serial communication interface RS 485 or RS 232 communication protocol communication speed byte format RS 232 line powered by host port max voltage levels max cable length This applies to i n variant only N Br NZ IOM January 2007 optional according to firmware version 9600 38400 Bd adjustable 8 bits 1 stop bit no parity terminals DSR TxD RxD GND1 CTS 15V 15m The RS 485 internal bus has no impedance due to the battery power supply The cable length may be limited by intrinsic safety requirements depending on cable inductance A RS 232 interface is only available for i n variant Page 41 GAS CADA vemm tec RS 4 5 line terminals U1 GND1 D1 D1 supply voltage U1 GND1 ie OA TOV max cable length of the i
8. IOM January 2007 Page 15 GAS CADA vemm tec compressibility calculation standard results in corresponding reduction of the measuring range Change to parameters relevant for compressibility calculations cause the start of calculations required for future compressibility calculation These calculations represent a heavy microprocessor workload During calculation time slow down of device functions can be observed such as slower reaction time when pushing a key or longer response time during communication Running calculation is indicated by the asterisk in the lower right corner of the Conv according submenu e lnput parameters this submenu displays ranges and addresses of installed transmitters as well as input numbers and gas meter constants Pressing the down arrow key will display gas meter or transmitter serial numbers 2 11 5 system data Entering this menu allows you to display important device system values and to start the execution of system actions e Date and time e Start of the Device test function After pushing the Enter key the device test will be executed The first detected error will be indicated on the display Pushing the up arrow or down arrow keys will start the display test e Start of the Device reset function After pushing the Enter key the whole measuring system will be restarted e Communication which is a selected interface status of a mod
9. Installation Operation and Maintenance Manual this manual The complete original certificates ordered will be shipped separately If applicable and if ordered the documents supplied are e Verification certificate of legal calibration or Calibration Certificate of factory calibration with calibration results e Parameters of measuring system e Inspection Certificates EN 10204 3 1 for weldolets and thermo wells e Others on request Each shipment is checked for completeness and released by Quality Assurance Staff prior to shipment You should check the meter and accessories by means of the order acknowledgement and the delivery note for completeness Any damages caused during transport should also be checked Please immediately contact your sales agent if the goods are incomplete or damaged Page 8 IOM January 2007 GAS CADA vemm tec 2 5 Instructions for storage and conservation An electronic volume converter is a high precision instrument it should be handled with care vemm tec suggests to store the GAS CADA in the original crating packing to avoid damage during storage They must be stored in a non condensing atmosphere in a temperature range from 40 to 85 C 2 6 Principle of operation Calculation of the gas conversion factor C The explanation below considers a GAS CADA with one channel When there is a dual channel device the second channel functions in the same way The device allows measurement of more chann
10. in area 2 This application example enables custody transfer measurement of one gas meter line The device is installed outside the explosive hazardous area Transmitters and a gas meter pulse sensor are mounted in the explosive hazardous area This example demonstrates the possibility of the device placed remotely from the measuring point The length of the pulse sensor cable 15 m is the factor limiting the distance between the device and the measuring point The i n variant can be directly connected to communication equipment or to control outputs without safety components Zener barrier separator Page 26 IOM January 2007 GAS CADA vemm tec Figure 9 Application example measurement in a single line regulating station with the device installed outside the ex zone in area 2 gas temperature measuring gas pressure measuring gas meter pulse detection zone 1 or zone 2 for both i and i n variants area without explosion hazard 4 3 Mounting instructions The GAS CADA gas volume conversion device is a compact device mounted in an aluminium housing with IP 65 protection and shielding against external electromagnetic field If the device is installed in the zone 1 area grounding is required see Section 4 5 Installation in zone 2 does not require grounding provided that electrostatic charge will not be accumulated Before beginning the cable installation it is required to switch off power of the device bat
11. label Type label of the temperature converter User seal N A I _Q_Q_ Q _Q QO 4 5 Grounding The grounding screw of a M6 size can be found in the bottom right corner of the device box lf GAS CADA is installed in the zone 1 area it must be grounded to the earth potential to dissipate the electrostatic charge In the zone2 the grounding is not necessary for safety or explosion proof reasons However it is necessary to ground the device if electrostatic hazard exists or if it is required for functioning of the device electromagnetic interference immunity The same grounding requirements apply to the temperature transmitters and the external pressure transmitters as well Usually the transmitters are installed so that they are electrically connected to a grounded construction which is sufficient for the electrostatic charge dissipation metal pipeline or metal thermowell If the transmitters are electrically isolated form any grounded construction for example with plastic tubing their case must be grounded additionally IOM January 2007 Page 31 GAS CADA vemm tec 4 6 Device assembly wiring Figure 14 Device assembly wiring HAZARDOUS AREA GAS CADA EExianA SAFE AREA Modem cable MODEM DCE PC cable or PC DTE POWER INPUTS RS 485 signals Communication device or and power supply CG Veer Hi TTE T d Device 2 us Device Eh TRANSMITTERS RS 485 OUTPUTS POWER I DA
12. A setting archive record includes timestamps worker identifications description of the activity as well as new and old parameter values if required This archive is not unlike the other ones a first in first out type for example if the archive is full it is not possible to save data and change further modifications of parameters Record length depends on the record type archive capacity is 16 KB with an average of 500 records see Section 2 15 3 Table 4 Archiving options of individual values Custom Dayly Monthly Extreme Binary x Sene archive mrene archive archive Input analog mean vas J yes yes ys J nternal analog mean value yes yes yes Output analog mean value yes yes ys 3 Minimum maximum ys yes Quantities flow rate measurement Primary volume absolute status yes yes ys Base volume absolute status yes yes ys J Error primary volume absolute status yes yes ys Error base volume absolute status yes yes ys Max daily consumption primary volume ye Max daily consumption base volume ye Max hourly consumption primary volume yes yes Max hourly consumption base volume yes yes Internal counter absolute status yes yes ys Output pulses pulse debt status yes yes ye Primary flow rate mean vale yes yes ys ase
13. Normal status Error status impulses impulses PS ul g 2 Mechanical design The device is placed in the aluminium box with metallic bushings allowing connection of the cable braid Electronic circuits are mounted on two printed circuit boards The processor board installed in the box top is fully covered and the input board is covered partially Both PCB covers and the device itself can be sealed In order to allow calibrations parameter settings and data protection the processor board contains two DIP switches see Section 2 15 1 2 8 1 Protection against electromagnetic interference EMC and EMI In order to meet requirements concerning immunity of the device to conducted or induced disturbances the device is fitted with filters A suppressor eliminates overvoltage entering the device The galvanic separation of communication signals is also of a big importance for the device immunity The system meets requirements of the Radiated Emissions EN 55022 Group1 Class B Table 2 Immunity of the device to disturbances EN 61000 6 2 Standard Description Required Actual ame EN 61000 4 2 Electrostatic discharge immunity test EN 61000 4 3 Radiated radio frequency electromagnetic u immunity test EN 61000 4 4 Electrical fast transient burst immunity test A 4 EN 61000 4 5 Surge immunity test re Fis radio frequency fields ia i EEE ss variations immunity tests Functional criterion A The device mu
14. archive options see Table 4 In addition it provides the option of saving the statistical values of gas consumption The values are saved once a day at the gasworks hour usually at 6 00 AM The number of daily archive records is 100 Hence a record dated on 13 06 contains statistical values between 12 06 6 00 AM and 13 06 6 00 AM Monthly archive This archive has similar properties to the data archive options see Table 4 In addition it provides the option of saving the statistical values of gas consumption The values are saved once a day at the gasworks hour usually at 6 00 AM The number of monthly archive records is 25 Hence a record dated on 01 06 contains statistical values of between 01 05 6 00 AM and 01 06 6 00 AM Page 18 IOM January 2007 GAS CADA vemm tec Binary archive This is an archive of events A value is saved into this archive only after any saved bits have changed Records include timestamps with a precision of 1 s The number of binary archive records is 2000 Extreme archive Extreme values minimal or maximal of archive parameters are saved The values are accompanied with timestamps Currently measured values are written into the maximum and minimum value registers during the archive initialization Setting archive This archive contains parameter changes relevant to metrological characteristics of the device It is also possible to save the identification of a person who made the change
15. be made by using the 6 x 1 mm pipe First push the pipe into the pressure input of the device GAS CADA ERMETO 12 x 1 5 MANO 20 x 1 5 according to the variant Then mount the operating outlet of the three way valve onto the other end of the pipe and screw the valve using 4 bolts M5 x 40 with nuts to the beam These can be screwed to the mounting plate at this phase Finally tighten corresponding nuts on the device and valve bolts Block assembled in this manner can be used for various fastening types at the target location Page 28 IOM January 2007 GAS CADA vemm tec Figure 11 Mounting on the pipe Temperature converter Mounting plate lip Impulse output Shim MIS nut 4 3 2 Mounting on the wall The block bolted together as described in paragraph 4 3 1 will be fastened with four 5 x 40 mm screws through its corner borings to the wall into 8 mm dowels If grounding is required the grounding screw will be used on the side wall of the box with the fan shaped washer The fan shaped washer must be inserted between the connected cable and the screw head This connection dissipates the electrostatic charge see Section 4 5 4 3 3 Mounting on a pipe If there is a straight and free section on the pipe it can be utilized to mount the block directly on the pipe using two clips see Figure 11 The clips with dimensions matching the pipe diameter are put through borings in the mounting plate and on the pipe Shims are fast
16. flow rate mean value yes yes ys _ low rate minimum maximum onversion gas compressibility ratio CO Eo a yes ye O lt I lt R N O l O lt o O h O O rmy O 5s I 3 D O gt lt Cc D yes yes yes OIO OID 3 9 HE o 13 a O O10 lt I o e lt wio gt Z QIO Q 2 2 O O Z D gt 2 gt Sis cC 3 D 3 Q x lt Binary values inary input status yes inary output status ye etpoints status yes ye nternal binary yes U i lt lt lt lt NIJNI lt D O ZSI O 2 W e O a 2 lt O amp D O 3 2 8 D N aj 3 D O O 3 3 O x sx O x N N mme Q P c T u absolute status yes MIN C P D 3 D 5s u ntry code Hour or day or both combined as appropriate are saved together with the value Date and time of the minimum or maximum reading are saved together with the value y 2 IOM January 2007 Page 19 GAS CADA vemm tec 2 14 Communication with a master system Interconnection with a master system can be realized via RS 232 or RS 485 lines The current version of the device firmware provides 4 protocols Additional protocols are envisaged according to customers needs The following protocols are implemented VTE ver 2 QMD SRD and ModBus The VTE ver 2 protocol is a na
17. inspection of the main label Explosion proofness can be affected by other connected devices It is necessary to respect relevant standards and device input output parameters specified in the ATEX certificates 2 9 Block diagram of the device The device tasks are distributed to multiple processors The 16 bit TI Texas Instruments processor controls detection of pulse outputs of the gas meter and binary inputs as well as calculation of volume and flow rate It also generates output signals and provides the real time clock RTC It saves counter states during power supply failures using the backup battery energy In the event of a power supply fall out disconnection of the supplying battery and external power supply the Tl processor with some input circuits are powered by the lithium backup battery This enables to evaluate input pulses to calculate the volume from the gas meter outputs save counter states and maintain real time even during blackout The second 16 bit processor TOSHIBA controls other processors TI transmitter processors collects measured values performs calculations and commands the generation of output values It provides for Statistical processing of measured data and archives them according to parameter settings Furthermore it controls data display and communication with the master system including related communication devices The TOSHIBA processor works with a 1 MB FLASH program memory and a 32 KB RAM data memory
18. on operating mode backup battery life depends on how is the device used without IOM January 2007 GAS CADA vemm tec 5 1 5 Metrological parameters and device accuracy measuring method Relative error at operating temperature typical total error of the conversion dev maximal total error of the conversion dev primary volume measurement error compressibility factor calculation error compressibility factor calculation Pressure measurement number of inputs absolute pressure transmitter measuring ranges measurement error long term stability maximal overload capacity mechanical rigidity pressure inlet make external sensor cable length Temperature measurement number of inputs sensor measuring range measurement error long term stability sensor variant external sensor cable length Internal temperature measurement measurement error Real time clock long term stability PTZ conversion 1 or 2 independent channels lt 0 15 lt 0 5 no error lt 0 05 AGA 8 92 DC full composition or the simplified methods AGA NX 19 AGA NX 19 mod AGA 8 G1 AGA 8 G2 SGERG 88 constant 2 digital pressure transmitter with the ModBus protocol connected to the RS 485 bus 80 520 kPa 200 1000 kPa 400 2000 kPa 700 3500 kPa 1400 7000 kPa lt 0 25 of measured value at extreme conditions lt 0 1 of measured value per year 1
19. other data Metrological data which are designed for custody transfer measurement are applied in factory and protected by the official sign The parameter setting is restricted for these values The other data can be entered and modified as needed Device settings are performed by means of variables in the parameters dialog box of the service software GASCcomm The dialog box provides definitions of monitored values and allows the setting of their measurement and archiving 2 12 1 Analog values Temperature and pressure values are measured by means of pressure and temperature transmitters The remaining analog values are measured by the device hardware Measurement of additional analog signals can be realized by external equipment available on request Measuring period for analog values is adjustable within the range of 1 30 s It is possible to set a unit of the value a listbox with predefined units is provided for metrological values 2 12 2 Digital inputs Total number of digital inputs available in the device is 8 The DI1 DI4 inputs are connected with the terminal block and can be configured as low frequency high frequency or binary inputs The DI5 DI8 inputs which are accessible through the D Sub9 extension connector can be used as binary ones The flow rate measurement function can be activated for an pulse input The backup battery ensures that counter states and low frequency pulse counts are retained in case of batter
20. transmitter Terminals of pressure and temperature transmitters Expansion connector BBB Scene aie D Sub9 with cover Re Terminals of inputs and of Se I Outputs and communications external power supply gt terminals Separator Display AS CADA Seals Optical interface A RSE NP ET eg Z lt Keyboard accept cancel Earth screw IOM January 2007 Page GAS CADA vemm tec Other device characteristics e Compact construction good mechanical robustness e Easy installation even in exterior conditions e Can be installed in explosion hazardous areas 2 different variants are available with respect to the protection against explosion hazard e RAM data backup pulse and real time counter values low frequency pulse counting backup battery provides power for 10 years in case of mains failure e Both single channel and dual channel variant are available configured as PTZ PT TZ or T converter any configuration on either channel is possible in the dual channel variant e The compressibility ratio calculations are based on the AGA NX 19 AGA NX 19 mod SGERG 88 AGA 8 G1 AGA 8 G12 and AGA 8 92 DC standards which can be selected by user e High precision is reached due to the digitally compensated temperature and pressure transmitters typical error lt 0 15 excellent parameters of long term measurement stability additive error lt 0 1 per year e Pressure transmitters may be int
21. with the Essential Health and Safety Requirements relating to the design and construction of equipment and protective systems intended for use in potentially the design and construction of equipment and protective systems intended for use in potentially explosive atmospheres given in Annex H to the Directive explosive atmospheres given in Annex Il to the Directive The examination and test results are recorded in confidential Report M The examination and test results are recorded in confidential Report N 0570270 dated 26 08 HKS 05 0270 dated 26 08 2005 9 Comphance with Essential Health and safety requirements has been assured by compliance with tg Compliance with Fssential Health and safety requirements has been assured by compliance with EN 50014 1997 A1 A2 EN 50020 2602 EN 50014 1997 A1 A2 EN 50020 2002 EN 50021 1999 10 If the sign X is placed after the certificate number it indicates that the equipment or protective 10 If the sign X is placed after the certificate number it indicates that the equipment or protective system rs subject to special conditions for safe use specified in the schedule to this certificate system is subject to special conditions for safe use specified in the schedule to this certificate 14 This EC TYPE EXAMINATION CERTIFICATE relates only ta the design examination and testing 11 This EC TYPE EXAMINATION CERTIFICATE setates only to the design examination and testing of the specified equ
22. yuana kuqa aan u cn has wa kaqa quq qasa ee ende 13 2 10 1 Display enaragleriSUI6S usu u u U a m Sum Zaa u uuu asawa sus usss Sa 13 2 10 2 Description of individual keys a aa 13 2 11 System Mensan ie ek essen 13 2 11 1 Basic Men anne 15 2 11 2 PACA 18122 13 gt uuu uum u tems ANDERE a a a a a SERIAL A REINER NR DER a ua un a ua ue 15 2 11 3 Saved valie S ee ee ee cal 15 2 11 4 DEVICE parame lerrS une nee euere 15 2 11 5 SV SUS INCA AS ee aa aku Qutu uu au usun unayta utu 16 2 11 6 DIGNOS Sn ee u et ce ee Spin ua ee 16 2 11 7 FOR TIS SS AGC S aan een ge 16 2 12 Parameter S ns 22er eed cn cee eee 17 2 12 1 ANal09 VAUS ra nee aaa unayta man Qata aa 17 2 12 2 BIO ALINDUS ae muyukunas ee ee ener iter erent errs re aap aykala ae 17 2 12 3 IGM AlOULOUIS isinne a e e a ee ia 18 2 12 4 DOKS ONINE GIS NAY rabian ee es ee a ae N 18 2 19 DRUPO u unuman re eee gana zase sanan 18 2 14 Communication with a master system a aaa ara rrrrrarrssarss saa 20 2 14 1 Communication with a modem controlled by AT commands 20 2 14 2 Communication with GSM and GPRS modens 20 2 15 Protection against changes of metrological parameters
23. 20 2 15 1 Protection realized DY switches 20 2 15 2 Password system and access levels a a a 21 2 15 3 Saving changes into the setting archive 21 2 15 4 Device identification and official seals 22 2 16 Extending the device with additional transmitters and modules 23 3 SOFI ARE 22 esse ee een et 24 3 1 FEN ANG RENIE a a ee ee ee ee AE ae er Re 24 3 1 1 Additional firmware options a nee sae ee 24 3 1 2 Updating TIN WANG se ansehen ua 24 3 2 FAC LORY SENOS uuu suu Sha qan get halle 24 Page 2 GAS CADA_IOM _07 doc IOM January 2007 GAS CADA vemm tec INSTALEDATION Seesen esse ee 25 Safety instructions and warnings See back page 25 ADpiicati on examples u u een se 25 Installation in a single line regulating Station 25 Installation in a dual line regulating station measurement and monitoring 25 Installation in a single line regulat
24. 25 upper limit of measuring range 15 MPa gt pipe 6 mm ERMETO M12 x 1 5 screwed fitting internal external with bushing or external with connector 100 m total length of the internal bus cable 7 2 digital temperature transmitter with the ModBus protocol connected to the RS 485 bus 25 60 C 030 C lt 0 02 per year relative error in K external with bushing or external with connector pipe 5 7 mm length 120 mm with head containing processor unit 100 m total length of the internal bus cable 9 2 C 5 min year 25 C Simpler conversion variants may be configured independently for both channels It is possible to use one temperature sensor shared by both channels Supported variants are PTZ PT TZ and T IOM January 2007 The selected compressibility calculation method may cause reduced measuring range for gas temperature Table 1 The pressure sensor will be destroyed but gas tightness will be kept The cable length may be limited by the requirements of intrinsical safety depending on the cable inductance Page 39 GAS CADA 5 1 6 Digital inputs number input options software configuration cable length of each input Binary input door contact gas meter violation min state duration time input type open circuit voltage short circuit current level LF pulse input maximal frequency input type min pulse idle period length open circuit volta
25. 49 0 331 7096270 E mail info vemmtec com Internet http www vemmtec com 093 102 003 Changes in course of technical development are reserved Gas Measurement
26. Gas Measurement electronic volume converter H vemm gt Ei Messtechnik amon COC GAS CADA vemm tec Installation Operation and Maintenance Manual IOM CONTENTS 1 EISTORFTERMSANDSYMBOL Sir ec 5 2 INTRODUC Bk A errr eet eter ere erent este a eier 6 2 1 Dear CU SUC us uum Du u m wauu suu au aeta A A emanaeee 6 2 2 NOLUCE eu era daa ae ee ee sasana stuyuyaama k 6 2 3 BIIENGESCHDION ua k 2uuasyyautaiaqasqassaqopashaskorassasptashaqkashussasscuassnkbusaskbtususasqtashuqhaqhikakoshussaqctashaqhbaqpusuk 6 2 4 Parts and documents supplied with the GAS CADA 8 2 9 Instructions for storage and conservation a aaa raarrrsrrss aaaa 9 2 6 Principle of operation Calculation of the gas conversion factor C 9 2 7 V OolUMe Under error CONAINIONS ua u a E E A haku aquel qhuya q 10 2 8 NIECHanIcal desIgN an cists ici ede ARE anasu oa ansa sb SA 11 2 8 1 Protection against electromagnetic interference EMC and EMI 11 2 8 2 Explosion proof design i variant and i n variant aa 12 2 9 Block diagram of the device a nnnnennnnennnnennnnnnnnnnnnnenn 12 210 ISeyboald ardidisph
27. M TEC Messtechnik GmbH On request of VEMM TEC Messtechnik GmbH Gartenstrasse 20 Gartenstrasse 20 D 14482 Potsdam D 14482 Potsdam Germany Germany Submitted An electronic gas volume conversion device EVCD Submitted A gas meter with addition of an electronic valume conversion device EVCD Manufacturer VEMM TEC Manufacturer VEMM TEC Type GAS CADA Tyge GAS CADA Chararteristics Destined for gas volume conversion as a part of a gasmeter Characteristics Destined for the measurement of i lum A Sr Severity class F locations with a general open air climate and medium levels of vibration and shock ambient temperature climate and medium levels of between 25 C and 55 C vibration and shock ambient temperature between 25 C and 53 C Severity class F locations with a generai open ar In the Description TC3571 Revision the remaining characteristics are stated I the Description T8793 Revision 0 tne remaining characteristics are stated 39022 i org ge Description and The EVCD is described in the Description no TC3571 Revision Q and Description anc The gas meter is described in the Description nr T6793 Revision 0 documentation recorded in the Documentation folder no T3571 1 appertaining te this dacurnentation appertaining to this Type Approval Test certificate Remarks Remarks It shall be noticed that according to article 11a second paragranh of tha Ukwet Weights and measures law a type ap
28. TCOM Kx SUPPLY JBZ 01 JBO 01 Option of DATCOM RTU modules extension DIO 8 IS COM IS Device 1 for example telemetry input circuits Device 2 device with low voltage and low power input for example optical or acoustical signalling Device 3 other devices or other separation type Only 1 interface may be used 4 Cable connections and recommended cable types The device provides terminals for cable connections conductor cross section 0 5 to 1 5 mm The terminals are identified by the PCB printing with signal descriptions see Figure 16 and Figure 17 Recommended cable types are listed in Table 7 Table 7 Recommended cable types Connection Cable type Cable Recommended cable type diameter Pulse input 2 wires shielded Unitronic LiYCY 2 x 0 25 Lappkabel Stuttgart Page 32 IOM January 2007 GAS CADA vemm tec Before connecting the cables tube cable lugs must be crimped on stripped wires using pliers which are recommended by the lug manufacturer Wires with tube cable lugs can be plugged into terminals without any tools The terminal claw is to be slightly depressed when removing the wire from the terminal Strong press applied to the terminal claw may cause the contact collet to push the wire to the other side of the terminal thus making removal difficult Cable inlets into the device box are fitted with bushings designed so that cables braid can be connected to the device box see Figure 15 Shiel
29. a IEC 110 interface IrDA Upon application of the HIE 01 infra red reading head the IrDA interface must be activated in advance using the corresponding menu command the device switches from the economical mode into the data receipt mode The device stays in the data receipt mode for at least 180 s after the end of communication or until the user removes the HIE 01 head from the communication interface deactivates the IrDA interface by leaving the corresponding menu 5 2 2 Output generation Due to the device characteristics it is possible to use output generation if the device is powered by the battery The battery current consumption of a switched output is 0 4 mA This fact must be taken into account because it will influence battery life Battery life reduction can be calculated on the basis of pulse signal parameters estimated number of pulses at a given point and a known consumption value Output side of the circuits beyond the galvanic separation must be fed by a separate power supply Considering the low power consumption of these circuits it is possible to use an external battery U 12 V under defined conditions 1 2 Parameters stated in the ATEX certificate must be respected when using the RS 485 interface in hazardous area IrDA interface is not included in the standard variants Page 42 IOM January 2007 GAS CADA vemm tec 5 3 Battery life time 5 3 1 LP 03 supplying battery The operating period of the devic
30. able to perform any action other than low frequency pulse counting The STOP mode will end only after the battery has been replaced The LP 03 battery can be replaced even in an explosion hazard area The identical battery type must be used LP 03 3 6 V 16 5 Ah lithium with chip Discharged battery should be disconnected as soon as possible The backup battery can be replaced in an authorized service centre after breaking the official and factory seals The identical battery type must be used Saft LSH 14250 Battery replacement must not be done in the explosion hazard area Page 44 IOM January 2007 GAS CADA vemm tec WARRANTY GAS CADA volume converters supplied by vemm tec are guaranteed against defects due to faulty material or workmanship for 12 months from the date of placement into operation but not more than 18 months from the date of dispatch for Goods according to the General Terms and Conditions of vemm tec Messtechnik GmbH unless otherwise agreed in writing Replacement parts provided under the terms of this declaration are warranted for the remainder of the warranty period applicable to the Goods as if these parts were original components of the Goods This warranty does not extend i to damages caused by unsuitable or improper use faulty installation or operation by the Customer or third parties natural wear and tear faulty or negligient treatment or maintenance the use of unsuitable operating or subst
31. all processors is saved in the FLASH memory The update of the TOSHIBA and TI processors can be carried out via serial line using the VTE ver 2 protocol You must switch the Metrological switch into the ON position Firmware update in pressure and temperature transmitters can only be done in the factory 3 2 Factory settings Parameter settings e All Values are measured every 10 s e The mean measured and calculated values counter states are saved into the data archive with a period of 1 hour as well as into the daily and monthly archives e The device and transmitter errors are saved into the binary and data archives e Full access password and read password are disabled service switch is configured so that any settings may only be performed if the switch is in the ON position e A bit that indicates external power supply failure is not selected e Communication speed is 38400 Bd the protocol used is VTE ver 2 e Archiving time of the data archive is 19 5 months for the single channel variant and 10 months for the dual channel variant Page 24 IOM January 2007 GAS CADA vemm tec 4 INSTALLATION 4 1 Safety instructions and warnings See back page 4 2 Application examples 4 2 1 Installation in a single line regulating station Custody transfer measurement of one consumption line is the simplest application The device is placed close to the gas meter directly in the explosion hazard area Monitored values can be added a
32. alues and calculate and save selected statistical values The setting archive registers configuration actions that influence device parameters and can be utilised for service and metrology purposes Saved and calculated values as well as device diagnostics can be indicated on the 2 x 16 character display Values are accessible through the menu and can be entered using the 6 button keyboard The measurement can be monitored by the limit values watching function Selected statistical calculations can be performed and user programmable functions are available Simple control or regulation of slow processes can be programmed States evaluated as alarms are registered in archives or sent into a master system The device is adapted to serve as a telemetric station For this purpose additional transmitters or modules can be added The device is equipped with a D Sub9 extension connector where an extension module can be connected The extension can be made without violating the seal on the already installed device The RS 232 RS 485 serial interfaces enable communication with a master system Various communication protocols implemented in the device facilitate connections with SCADA systems The device can cooperate with common telephone radio GSM and GPRS modems In the event of alarm events it is able to initiate connection establishment Figure 1 Inside and outside view with input board and terminal blocks i n variant Battery Pressure
33. and indirect contact 5 123 Intrinsical safety i variant intrinsical safety ia identification certificate number area classification vemm tec 160 x 160 x 90 mm max 2 5 kg aluminium alloy AlSi10MgMn 0 5 mm 1 5 mm IP65 according to EN 60529 25 C 60 C 40 C 85 C vertical maximum 95 non condensing extra low voltage II 2G EEx ia IIC T4 T3 FTZU 05 ATEX 0270 ZONE 1 ZONE 2 in variant combined intrinsical safety ia and protection of type nA identification certificate number area classification 5 1 4 Power supply supplying battery type supplying battery life supplying battery voltage supplying battery life measuring feeding from external JB power supply external JB power supply cable lenght voltage of external JB power supply Upwr backup battery type backup battery life without condensation is guaranteed supplying battery see Section 5 3 Page 38 II 3 2 G EEx nA ia IIC T4 T3 FTZU 05 ATEX 0271 ZONE 2 LP 03 3 6 V 16 5 Ah lithium with chip 6 years 2 2 9 3 6 V yes warning 90 day before discharge Several options 15m 4 5 10 V 8 10 V for HF inputs Saft LSH 14250 10 years Dimensions of bushings connectors and transducers are not included This operating position is recommended However the device may be mounted in a horizontal position if ambient Supplying battery life depends
34. and test certificate 47 Figure 23 ATEX cerlificate 0270 for Vallant as see aan 47 Figure 24 ATEX eniicate 0271 for Un vanan se uyu uu u suu uns uy u uu uu ou wane 47 LIST OF FORMULAS Formula 1 CCOMVELSION TONNU nee einher 9 Formula 2 Volume under measurement conditions primary volume 9 Formula 3 Gas COMPFESSIONIMY Vall Oita u utu ua na Zaa a suu aasan a 9 Formula 4 BOHVELS ION ACO eb ee a emma ene eee 9 Formula 5 Volume under base conditions base volume nenne nnennnn nennen 9 Formula 6 Primary TOWT e enden et 10 Formula 7 Base HOW FAC eain nei er E E A QS aes 10 LIST OF TABLES Table 1 Overview of standards for compressibility calculations and validity ranges 10 Table 2 Immunity of the device to disturbances EN 61000 6 2 11 Table 3 Messages displayed by the device a a nennen 17 Table 4 Archiving options of individual values a 19 Table 5 Parameters and other actions available on different access levels 22 Table 6 Assignment of weldolets and thermo wells
35. anufacturer seals Main label 2 16 Extending the device with additional transmitters and modules Communication with transmitters is realized over the internal RS 485 bus with the ModBuss communication protocol Additional modules can be connected to this bus extending the GAS CADA device features However issues related to power supply backup power supply and explosion protection must be taken into account The extension D Sub 9 connector with RS 485 bus signals can be used for requested connections The extension module connected to this connector allows for easy installations The pin assignment of the D Sub 9 connector is provided in Section 4 8 5 IOM January 2007 Page 23 GAS CADA vemm tec 3 SOFTWARE Each GAS CADA is supplied with a CD ROM which provides the software GASCcomm for configuration and for read out The software is to be easily installed under Windows Please insert the CD ROM and follow the menu 3 1 Firmware 3 1 1 Additional firmware options Below you will only find a brief summary of current firmware options A complete set of options is available from the manufacturer Please ask your local agent Note If the calculations are based on binary signals active status of a given signal is used instead of its logical value e Setpoint values setpoints can be set to provide checks of the limit states of analog parameters These can be saved in archives and sent to the dispatching centre e Equation
36. binary inputs connected e inputs backed up DI1 DI4 short circuit e duration of the supplying battery voltage fall out all the time 5 3 3 Self discharge of batteries Both backup and supplying batteries are lithium cells Such batteries lose their capacity due to the self discharging Recommended replacement period is 10 years even if the battery has never been in use see Section 6 2 IOM January 2007 Page 43 GAS CADA vemm tec 6 MAINTENANCE 6 1 Replacing the fuses Only the i n variant is equipped with fuses They are placed on the input board Their positions are marked by the PCB printing near the holders The following conditions and parameters must be observed when replacing the fuses The dimension of the fuse must fit into the fuse holder Table 14 F1 F6 fuse parameters EI S ys S Mandatory for Ex protection yes 6 2 Replacing the batteries Both backup and LP 03 supplying battery are lithium cells Such batteries lose their capacity due to the self discharging Recommended replacement period is 10 years even if the battery has never been in use More information about battery life time is given in Section 5 3 The GAS CADA issues a warning message requesting you to replace the LP 03 supplying battery 90 days before the expected battery discharge The device will switch into the STOP mode if the battery voltage falls below a minimal value of Umin 2 9 V While in this mode the device is not
37. cording to EN 12405 sub clause 6 3 1 5 time elapsed before entering into the basic display mode can be configured e Instantaneous values can be displayed sequentially after pressing the Enter key which makes the device control easier for untrained staff this feature requires navigation into the top menu level performed by the Esc key e Power saving function turns off the display after 20 s when battery powered after 6 min with external power supply the display turns on after a keystroke 2 10 2 Description of individual keys In most cases except of archive display the first menu item display follows the last one or vice versa when pressing the arrow keys gt or lt Enter e This key enters the lower menu level it selects the requested item for example e It shows other information for a given item when displaying archive data for example switching between value name and archiving date within the data archive display e Pressing the Enter key shows values including their decimal fractions in the counter state display e It navigates to the next item analogous to the right arrow key when the given item does not contain a lower level or when it is not possible to switch the data displayed for the current item Esc e his key navigates to the upper menu level Right arrow key e This key navigates to the next item on the same menu level The function of the key Enter is identical for some items Left arrow key e
38. ction iron Bolt M xid LE Temperatur sl converter F 4 4 Connecting the transmitters to the measured medium 4 4 1 Connecting the pressure transmitter The connecting pipe to the GAS CADA conversion device will be installed according to relevant technical standards conditions and operational overpressures Interconnection between the output of the three way valve and the p p point of the gas meter will be made by a pressure pipe of 6 x 1 mm The pressure pipe will be pushed into the operating input of the valve fitted with the 6 mm sealing ring and the M12 x 1 5 check nut that ensures a tight joint 44 2 Connecting the temperature transmitter A weldolet will be welded to the pipe in a distance of 1 to 2 D downstream of a gas turbine meter or 1 D upstream of a rotary gas meter according to Table 6 The weld on piece must be welded so that a thermo well will be in a vertical position during assembly or in an angel of 45 from the vertical axis See Figure 13 A receiver of a length appropriate for the given pipe bore will be screwed into the weldolet through a copper sealing see Table 6 The temperature transmitter will be pushed into the thermo well till it touches the bottom and fixed by a nut Page 30 IOM January 2007 GAS CADA vemm tec Table 6 Assignment of weldolets and thermo wells DN an L a weldolet _ G Figure 13 Connection of the temperature probe with a vertical weldolet z User seal
39. ded cables are required for proper device functioning and protection against extraneous interference The shielding connection rules must be observed so that no grounding loops originate Thermal endurance of the SRO cables as specified by the manufacturer is 5 C to 45 C Thermal endurance of the VFK cables is 5 C to 70 C Lappkabel Stuttgart declares for the Unitronic LIYCY cables thermal endurance of 5 C to 70 C for flexible connections and 30 C to 80 C for static connections Thermal conditions applicable to the device installation result from these specifications Figure 15 Cable braid connected in a bushing 4 Pin assignment terminals and connectors 4 8 1 Terminals of external power supply and binary inputs The GAS CADA terminals of external power supply and binary inputs are described below The volume pulse signals coming from the gas meter must be connected to the inputs DI1 and DI1 Table 8 Pin assignment external power supply and binary inputs Group Signal Description gt gt o o positive pole of the external power supply _ x Dl1 positive pole of the DI1 digitalinput P DI2 negative pole of the DI2 digital input U x D2 positive pole of the DI2 digital input x DI3 negative pole of the DI3 digital input U Dit positive pole of the DI3 digitalinput x Dl4 negative pole of the DI4 digtalinput U Dl4 positive pole of the DIA digtalinput
40. device performs real time calculation of the gas flow rate from the pulse frequency measured on its input using the mathematical filtering method The value of the flow rate indicated on the device display is refreshed every 10 s Formula 6 Primary flow rate Q dV dt m h with dV primary volume increment m dt time between two pulses with precision of 0 01 s h Formula 7 Base flow rate Qn C dV dt m h 2 Volume under error conditions In order to perform calculations under error conditions due to the converter error values out of limits or device error the device contains counters of error volume under measurement conditions V and under base conditions V s These counters are coupled with appropriate counters of volume under normal conditions In the event of error conditions the device begins to count pulses using both the counter for measurement conditions V and the counter for error volume under measurement conditions V The increments of the base volume are then calculated from the fixed pre set default values for pressure and or temperature The calculation results are now stored in the error base volume Vps counter instead of the base volume counter In that error status the values of actual volume are still accumulated in the usual counter and also in the error primary volume V counter Page 10 IOM January 2007 GAS CADA vemm tec Figure 2 Processing and counting the pulses Tuma a
41. e powered by batteries depends on its configuration parameter settings serial communication frequency and duration and display usage time Consumed battery capacity is continuously calculated during the device operation and registered in the chip which is included in the LP 03 battery The device issues a warning message requesting you to replace the battery 90 days before the expected battery discharge see Section 6 2 Mode examples with battery life calculations parameters shared by all modes e archiving period of the day archive 1 hour e communication with the device 1 min per day e display usage 2 min per day If the defined consumption is exceeded a more frequent battery replacement or external power supply will be necessary Table 13 Battery life time for various operation modes Numberof Measuring Period of input Ambient Battery life m pene ma x pulses s temperature C year EN ae BEER BEE EEE _ Mode defined in EN 12 405 clause 6 5 1 5 3 2 Backup battery This battery provides for backup of important functions in case of discharge or replacement of the LP 03 supplying battery For replacement see Section 6 2 Defined conditions for backup battery life of 10 years storage temperature 25 C e inputs backed up DI1 DI4 contacts not connected or connected but not switched e duration of the supplying battery voltage fall out all the time Defined conditions for backup battery life of 4 years all
42. ed in the device LIP eat tenacity naa npa high frequency lna saus t naa tenes low frequency ModBus communication protocol designed by Modicon OMD zus zur Zn S communication protocol designed by Proteco Systems s r o single channel device This is a GAS CADA device with a single set of measured values required for complete calculation of the conversion Symbol Description Unit O EE AET COMVEISION TACIOMN een een EEEE EREE Saat ns EE E gas compressibility ratio Z Zp K factor aa gas meter constant number of pulses per m EN EE A A PE imp m Nice NUMBEROT BUlSeSs aac een imp Dade pasu E assn sa absolute pressure under measurement conditions bar Deza a absolute pressure under base conditions bar bassana am ONCE EIGEN absolute temperature under measurement conditions T t 273 15 K Verne gas EMD SAWN Se uuu einen C pasi asnus must AT absolute temperature under base conditions K Vena aaa yaad pasa ans volume under measurement conditions primary volume m Viren volume under base conditions base volume m Venen error volume under base conditions error base volume m V E A P E error volume under meas
43. els including the volumeconversion The device firmware is able to control even more than two channels The volume measured at actual conditions is converted to volume at base conditions with the following formula nomenclature according to EN 12405 Formula 1 Conversion formula Vp Volume at base conditions converted volume m z 3 u P T Zi V Volume at measurement conditions unconverted volume m V r eg ss y p Absolute gas pressure at measurement conditions bar b T Z pp Absolute pressure at base conditions 1 01325 bar or other specified pressure Tp Absolute temperature at base conditions 273 15 K or other specified temperature T Absolute gas temperature at measurement conditions K Zb Compressibility factor of the gas at base conditions Z Compressibility factor of the gas at measurement conditions The device receives information about actual volume passing the gas meter in the form of pulses N from low frequency or high frequency sensors installed in the gas meter Based on the number of pulses N and the gas meter constant k factor imp m the volume under measurement conditions V is calculated Additional information about the gas is received from temperature and pressure sensors gas temperature t and absolute pressure under measurement conditions p Calculations based on these values result in the conversion factor C which is influenced by other factors absolute temperature under base condition
44. em communication or a GPRS communication From this menu you can navigate up to the service menu to measure the GSM signal intensity if the GSM modem is configured Pushing the down arrow key shows the station IP address in the event of GPRS communication IrDA activation Use the Enter key Presence of main power supply Battery condition Voltage remaining capacity and battery current Entering the entry code for entry check option Read values menu It is possible to read frozen instantaneous values in order to verify device accuracy 2 11 6 Diagnostics The Diagnostics menu contains information about the status of the GAS CADA conversion device e Current status It displays the instantaneous device status Press the right arrow key to see all current errors of the conversion device successively e Summary status It displays the active states of individual bits in the device status word since the last initialization The summary status will be initialized upon device reset when entered from device keyboard or a PC for example the current status will be set as the summary one e Init sum status This item will execute initialization of summary status This means that the value from the current status is copied into summary status It is possible to make initialization of summary status through GASCcomm software 2 11 7 Error messages Error messages are displayed
45. ened with M6 nuts to the clip ends fixing the mounting plate to the pipe The mounting plate can be fixed to DN 80 150 pipes in a horizontal position and to DN 80 200 pipes in a vertical position The clips ensure conductive connection between the device and machine equipment They also dissipate the electrostatic charge see Section 4 5 IOM January 2007 Page 29 GAS CADA vemm tec 4 3 4 Mounting on a vertical bar This fastening method can be used in cases where there is not enough space on the pipe to mount the plate directly or when it is necessary to set the conversion device in another position allowing better access to the device and better display visibility This assembly can be applied to both horizontal and vertical DN 80 200 piping see Figure 12 Elongated shim is put on the pipe with welded section iron matching the pipe diameter The clip is then poked The check nut is mounted and fixed to the pipe by means of M6 nuts and washers The bearing bar is inserted into the lead sections and secured by using M6 x 10 nuts against sliding The 25 x 25 section irons are fixed with M6 x 8 screws in the axial borings of the mounting plate so that the bearing bar can be mounted After the bar is mounted it must be fixed with M6 x 10 screws in the requested position Figure 12 Mounting on a vertical bar Mounting plate Bolt Mex Section iran 25x25 Mounting plate Bearing bar Bearing ba eT Shim whit welded 1 i se
46. ernal external or combined the standard offer includes several pressure ranges with measuring range from 20 to 100 e The RS 485 bus communication allows longer cables in comparison with analog signal lines e The device provides alphanumeric display for indication of various information such as measured values archive values device state etc information to be displayed can be selected in the menu through the keyboard e High speed connection with a PC can be realized via optical head port e The GASCcomm exe program executable on a PC is used for parameter setting and basic device control all parameters are well arranged and wizards are offered to facilitate the program operation e The device accompanied by the software GASCcomm enables user groups to be structured according to access rights information on metrologic parameter modifications are saved in the setting archive e Implementation of the TCP IP stack allows the device to communicate on GPRS networks using a standard GPRS modem 2 4 Parts and documents supplied with the GAS CADA Your package includes GAS CADA device with transmitters as mentioned in your order Mounting accessories for wall mounting or for mounting on the gas pipe A weldolet with thermowell for every temperature sensor Spare fuses if applicable CD ROM with user manual and service software GASCcomm Copies of calibration certificates parameters of measuring system and 3 1 documentation if applicable
47. ety i EN 50021 1999 Electrical apparatus for potentially explosive atmospheres Type of protection n EN 55022 Information technology equipment Radio disturbance characteristics Limits and methods of measurement EN 60079 14 1997 Electrical apparatus for explosive gas atmospheres Part 14 Electrical installations in hazardous areas other than mines EN 61000 3 2 2000 Electromagnetic compatibility EMC Part 3 2 Limits Limits for harmonic current emissions equipment input current up to and including 16 A per phase EN 61000 3 3 1995 Cor 1 1997 A1 2001 Electromagnetic compatibility EMC Part 3 3 Limits Limitation of voltage changes voltage fluctuations and flicker in public low voltage supply systems for equipment with rated current lt 16 A per phase and not subject to conditional connection EN 61000 4 2 1995 A1 1998 A2 2001 Electromagnetic compatibility EMC Part 4 2 Testing and measurement techniques Electrostatic discharge immunity test EN 61000 4 3 1996 A1 1998 A2 2001 Electromagnetic compatibility EMC Part 4 3 Testing and measurement techniques Radiated radio frequency electromagnetic field immunity test EN 61000 4 4 1995 A1 2001 Electromagnetic compatibility EMC Part 4 4 Testing and measurement techniques Electrical fast transient burst immunity test EN 61000 4 5 1995 A1 2001 Electromagnetic compatibility EMC Part 4 5 Testing and measurement techniq
48. formation about completion of the action is recorded Information about completion of the action original values and new values are recorded Information about completion of the action parameter name original value and new value are recorded The following items are added states of volume counters base volumes error volumes base error volumes If the device real time has changed a record in the format as described in 2 is saved if the time correction exceeds 10 minutes lt I lt D NJN lt D y p 2 15 4 Device identification and official seals The main label is placed on the top of the device An informative label with the transmitter ranges is at the top of the device Temperature probe and pressure transmitters are identified by appropriate type labels The P1 P2 T1 and T2 symbols assigning a transmitter to a measured channel are placed near the pressure transmitters of the internal variant or on the labels of external temperature probes or pressure transmitters The verified device is protected against unauthorized manipulation of metrological parameters by means of 4 main seals in a label form see Figure 6 Page 22 IOM January 2007 GAS CADA vemm tec Figure 6 Locations of the seals Main seals Manufacturer seal User switch AA NNNNA Type labels of the pressure converters 1 N 1 u had had had had had had hal i NN Metrological switch M
49. functional block here you can use a simple syntax to edit an equation associating the systems parameters with output or internal values The equations can be composed of arithmetical logical and bit operations This way you can implement simple regulations launch periodical actions etc e Entry check functional block serves for simple monitoring of object entrances There is a possibility of connecting binary sensor signals to a delayed loop or non delayed loop The unlock operation is performed by inserting the entry code or by turning the switch on Output signals are Violation and Security enabled e Entry code designed for entry code inserted to an unlock object security system The code can be entered from the keyboard Shortcuts may be used when entering the code after pushing the up or down arrow keys in the basic menu e Internal values Values of analog binary or counter types may be entered These values serve to store intermediate results which can be used later displayed and transmitted e Timer performs function of a system counter or timer In the first case it works with binary signal in the second one it requires system time You can select between addition or subtraction and triggering by a binary signal These values can be utilized for example for periodical triggering disconnecting a modem after a defined blackout time counting a number of contact closings etc 3 1 2 Updating firmware Firmware of
50. ge short circuit current level HF pulse input maximal frequency input type min pulse idle period length open circuit voltage internal resistance 1 vemm tec 8 LF pulse input HF pulse input binary input 15m terminals DI1 DI4 connector D Sub 9 DI5 DI 100 ms reed contact or non potential output connected 2 8 3 6 V 3 pA approx L 0 0 4V H 2 0 3 6 V terminals DI1 DI4 10 Hz REED contact or non potential output connected WIEGAND 40 ms 2 8 3 6 V 3 pA approx L 0 0 4 V H 2 0 3 6 V terminals DI1 DI4 5 kHz NAMUR EN 60947 5 6 100 us Upwr 1 V 1 kOhm The NAMUR sensor must be fed from an external power supply when detecting HF pulses It is possible to use the device s power supply or to connect an additional intrinsically safe power supply Page 40 IOM January 2007 GAS CADA 5 1 7 Digital outputs Digital outputs number output options software configuration galvanic separation supply voltage U2 GND2 current consumption on term U2 GND2 cable length for each output Pulse output and binary output max voltage Max current max closed contact resistance Pulse output closing time opening time Binary output RS 485 communication line internal bus a serial communication interface vemm tec terminals U2 GND2 DO1 DO2 DO3 DO4 4 pulse output binary output 2 5 kV 5 30V max
51. his key navigates to the previous item on the same menu level Up arrow key e This key used in the archive display navigates to the newer value in the history structure Down arrow key e This key used in the archive display navigates to the older value in the history structure 2 11 System menu The device menu is organized in a hierarchical structure The basic menu items are explained in the paragraphs below They are used for the transitions into lower menu levels The menu structure is shown in Figure 4 IOM January 2007 Page 13 vemm tec Hierarchical menu structure GAS CADA Figure 4 s nTeA De u au zzno Kz aaeg snye3s zeuums 5s3 abe Toa Aas yeg snaeas qau zzno SOLLSONSWId Aytoedeos Arojyeg ESTE Atddns zemog ul T a F tes WLW WHLSAS UOT eOTUNUMIOD TO z Laa Id SSE Z0 ve Lad T Comis m a gt J X S I S OTAS SG 759 oSrA qd UF aut uo3s s 2035eJ sz Auoo x qarsu p ATIeIN SOnTeA ITFTIOTEI w uezed qndur a3ezqau ouoo ZH a UOTSI AUOJ JETYUSDUOD ZOD l ee 5 953 3 uorq eoSrunuucoo Wgd HOIAYA s nze sdus eseg s nssse d oseg Surpzoooe AUOD aus SATYUDIe W AIJXA N eatyosze Azeutg 0 uorszea Ma og __ sarypze egea s SHNTWA_CHAVS us sorasq w H ial OT 3 TeSrborTozq mq Toooqozd unwwop uoqaedsrp oq TT es lt lt J gt sJajauuesed je
52. in a single timeslice using the left and right arrow keys Time transitions selection of another timeslice can be realized using the up and down arrow keys The Binary archive contains binary input states with status bites that are calculated and saved in the system in addition to errors of individual devices 2 11 4 Device parameters This menu item allows to display important device parameters The data is arranged in several submenus e Communication communication parameters can be found here communication protocol transmission rate device network address information about permission to call the dispatching centre important for setting the PC software GASCcomm for communication with the device e Service parameters groups information about firmware version data memory size station name and device serial number e Conversion displays method of compressibility reference pressure and temperature calculations If the compressibility value is not constant concentrations of individual gas components combustion heat and relative density values are provided Furthermore it is possible to enter into the submenu for conversion parameters of individual channels This submenu contains default or constant temperature and pressure values compressibility mode calculated or constant measurement principle PTZ PT TZ or T and assignment of pressure and temperature values to measuring ranges the selected
53. in the Current status Summary status and Device test menus The short form is displayed in the right corner of the top menu level in a form of OK Err or Wrn abbreviations It corresponds to summary status Self diagnostics is started regularly complete device test once a day sensor replacement test every hour or irregularly after device turn on or by entering the Device test function from the keyboard The short form is a result of sum of individual events abbreviation with highest priority will be displayed Order of priorities is Err highest Wrn to OK lowest Page 16 IOM January 2007 GAS CADA vemm tec Table 3 Messages displayed by the device Displayed message Description Short form EO CRC program Fel JCRC boader Loader checksum error EZ CRC parameter Device parameter checksum error Device RAM memory error RS setup till Setting archive is full E4 FLASH failure Device FLASH memory error E1Q compres tab Error in compressibility table calculations caused by input Err parameters Current overload on internal bus terminals The device analyses current taken from two circuits transmitter terminals and extension connector Overloaded circuit is automatically disconnected from the power supply Reconnect attempt is repeated 1 time per hour The Device reset menu enables you to reconnect at any time if possible 2 12 Parameters The parameters can be classified as metrological or
54. ing station with the device outside the ex zone in area 2 26 MOURUNG WAS UFUGUONS ienesa yuku n u rennen 27 Mechanical assembly with the mounting plate 28 MOUNTING ON the Wallsassstaat rn ee een 29 MUNUN ON a DIJE rerasan a E a es E tei 29 Mounting on a vertical bar 30 Connecting the transmitters to the measured medium 30 Connecting the pressure transmitter 30 Connecting the temperature transmiltter 30 FOUNO muu ku sua u aa ua aa unas a aO 31 Device assembly WIrIflu u uuu u uu a owetad a Orare aT eaa Ea arii ae aa E 32 Cable connections and recommended Cable types 32 Pin assignment terminals and connectors 33 Terminals of external power supply and binary inputs 33 Terminals of binary outputs and RS 232 RS 485 communication 34 Terminals for temperature and pressure transmiltters
55. ipment or protective system in accordance to the directive 94 Q EC of the specified equipment or protective system in accordance to the directive 94 9 EC Further requirements of the Directive apply to the manufacturing grocess and supply of this Further requirements of the Directive apply to the manufacturing process and supo y of this equipment or protective system These are not covered by this certificate equipment or protective system These are not covered by this certificate 9 2 494 Th 1 fth njij r i iar ina 112 ne marking of the equipment or protective system snali imciude forawing 12 The marking of the equipment or protective system shalt include following amp x 112G EEx ia IIC T4 T3 x 113 2 G EEx nA ia IIC T4 T3 Ths EC Tyoe Exammnation Certificate is vali till 29 08 2010 This EC Type Examination Certificate is valid til 29 08 2010 Responsible person Resporsible person Dee al gt oe Date of issue 29 08 2005 Date of issue 29 03 2005 f mM use Sr F 5 i Dint Ing ind er Jaroslav I i Number of pages 4 Dipl Ing indler Jaroslav N AQ Number of pages 4 irati H f ificati Head of certification body Page 1 4 ead pf certification body Page 1 4 Tos certificate is granted subject tr era conditions of the Physical Technical Testing tnstitute ey er ted ject Soret i Pr j x 5 Tus cetificate s aranted subject to tre genera cotations of the Physical Technical Testng Institute his ger
56. itutional materials deficient assembly and damages caused by chemical electronic or electric influence ii to equipment materials parts and accessories manufactured by others Hi to correctness of any externally performed calibrations either at ambient conditions or at elevated pressure Improper use also includes breaking the seals of the device and non compliance to Installation Operation and Maintenance Manual vemm tec accepts no liability for Goods being fit for the purpose required by the Customer unless it shall have been given full and accurate particulars of the Customer s requirements and of the conditions under which the Goods are required to be used Upon written notification received by vemm tec within the above stated warranty period of any failure to conform to the above warranty upon return prepaid to the address specified by vemm tec of any non conforming original part or component and upon inspection by vemm tec to verify said non conformity vemm tec at its sole option either shall repair or replace said original part or component without charge to the Customer or shall refund the Customer the price thereof Externally performed calibrations are not covered by warranty However if vemm tec s inspection fails to verify the claimed non conformity the Customer will be liable for any costs incurred by vemm tec in investigating the claimed non conformity The remedies set forth herein are exclusive without regard to
57. l lower levels plus additional rights Working with the device on levels c and d is only possible with of the Full access password Levels c and d may merge depending on the service switch setting Operation on level e requires only Knowledge of Read password Both passwords may be cancelled thus deleting the three levels c d and e Service software GASCcomm and a hardware key are required to operate the device on the highest levels a and b 2 15 3 Saving changes into the setting archive Changes to parameters and some other actions are registered in the setting archive The archive does not rotate for example it can only be deleted within the factory access level While the archive is full it is not possible to make further changes or execute actions which are saved in the setting archive Information related to parameter settings differ depending on the type of the parameter If the parameter settings influence metrological characteristics the record includes information on the parameter type its new and old values time of change and volume are stated at the time of change Otherwise only the time and information about parameter modification are registered Furthermore information about archive resets password modifications firmware loaded and real time modifications are recorded Time modification will only be registered if the time shift exceeds 10 minutes A setting archive record always contains the date and time of the ope
58. ll as information about signal intensity as detected by the modem The own IP address can be displayed in case of the GPRS connection Compatible with Siemens MC35 MC39 modems inAT commands AT CREG AT CSQ and or AT CGDCONT a ATSSGAUTH CGDCONT is required for correct functioning 2 15 Protection against changes of metrological parameters Since the device belongs to the meters listed by the Metrology Act it must be protected against unauthorized manipulation of data that influence metrological characteristics of the device In order to accomplish this task the device provides the following means metrological and service switches a password system and a settings archive The system of protection allows to protect the device according to EN 12405 or even better 2 15 1 Protection realized by switches Two switches are installed in the device a metrological switch and a service switch The metrological switch is sealed by the official sign while the service can be protected by a user seal preventing access into the device see Figure 6 and Figure 10 After switching the metrological switch into the ON position you can modify parameters directly related to metrological characteristics Because the metrological switch is protected by the official sign a device test must be performed after each parameter change Page 20 IOM January 2007 GAS CADA vemm tec Function of the service switch depends on the factory settings of parameter
59. nal bus non inverted Note Terminals with identical names are interconnected Page 34 IOM January 2007 GAS CADA vemm tec Figure 18 Terminal block for temperature and pressure transmitters gt Fa Connection of individual a converers x Connection of Individual Z converters Ti ks 4 8 4 Pin assignment of temperature and external pressure transmitter connectors Table 11 Pin assignment of temperature probe and external pressure transmitter connectors Description External External connector Wire colour Wire colour Contact U positive pole of the power supply yellow brown 1 D RS 485 qata signal inverted pue yelow D RS 485 data signal non inverted white white 3 Note The connector is viewed fom the outlet side 4 8 5 D Sub9 extension connector The D Sub9 extension connector can be used to connect an extension module to the device in order to facilitate the wiring installation Table 12 Pin assignment of the D Sub9 extension connector PinNo Name Direction Description gt gt o o 1 GND output negative pole of the transmitter powering 2 Dt atta signal of the RS 485 internal bus non inverted U 3 JD atta signal of the RS 485 internal bus inverted U nm 5 DI binary input No 5 positive pole _ __ S 6 De binary input No 6 positive pole x 7 D binary input No 7 positive pole x o 8 Det bina
60. njoe uo Buipu d p s uo eu TIpG LSZIIO TAA HO WdWO SWS p 1u s id y WO Jay p Aew SUOID9S p zevpul Ul suu IOM January 2007 Page 14 GAS CADA vemm tec 2 11 1 Basic menu For the single channel device the first line contains device status information while the second shows the base volume The dual channel device displays two base volumes Device status information can be found in the first line when navigating on the top menu level Figure 5 Basic menu 0 Unlocked t Time out a Alarm Input check z Secured Diagnostics OK GAS CADA z OK Wrn Vb1 011287541 m3 Err Units Value Abbreviation 2 11 2 Actual values Display of values in the Instantaneous values section allows you to choose between displays of metrological values and all values Number of displayed decimal digits units and displayed names can be defined for the displayed values An asterisk in the last position of the upper display line indicates error conditions of the measured value 2 11 3 Saved values Each set of values according to parameter settings is stored with a time stamp which means that archive values are arranged in timeslices The saved values menu provides a display of data from particular archive types structure of archive values and archive existence depends on parameter settings The setting archive is not displayed since it can only be displayed through a PC Values from other archives can be browsed with
61. plied by a factor A box with additional equipment is installed in the Area1 It contains power supply backup power supply odorization relay and preheating control Communication with a master system is realised through the GPRS modem In the event of failures or if defined analog limits are exceeded the device initiates communication with a master device IOM January 2007 Page 25 GAS CADA vemm tec Figure 8 Application example measurement and monitoring in a dual line regulating station iain pipeline in Key Metrological parameters p1 gas pressure measuring main line t1 gas temperature measuring main line 11 DI1 input gas meter pulse counting main line p2 gas pressure measuring backup line t2 gas temperature measuring backup line I2 DI2 input gas meter pulse counting backup line Other parameters p3 regulating station inlet pressure measuring t3 gas temperature measuring required for preheating control K1 K2 DI5 input detecting position of quick closing devices main line K3 K4 DI6 input detecting position of quick closing devices backup line F1 DI7 input filter clogging detection main line F2 DI8 input filter clogging detection backup line R1 DO1 output preheating control R2 DO2 output odorization control Area 1 zone 1 or zone 2 for i variant zone 2 for i n variant Area 2 area without explosion hazard 4 2 3 Installation in a single line regulating station with the device outside the ex zone
62. proval snall be grantes fo tne entire model of the gas meter Dordrecht 12 August 2005 NMI Cerin BA Ca A Dordrecht 12 August 2005 am NMI Certih B V oe C O sterman eo at I anager Product Certification ae i z ing C Oosterman Manager Product Certification NK Certin B V Parts ganrerher car dge bjittiarn agais ak deere is issued under the nev ger thate Huge ge Grootplen 3314 EG Durdracht AF415 deriseer wry ax weeks after Thi dati repans bility 4 accepted and That the alphirani7 eg sey Nederlands Meetinstituut it a ths Gor ment s issumc unc peral manager of Has warranty foreach eesponsika lity agaist third parties i x ct Hugo de Grogtplein 1 np thay copa ce aN P O Box 394 3300 Ar Dordrecht NL an Me 3314 EG Dordrecht NL ty phone 21 78 6332 332 aye Reneduction of the complete doc ment prraatie gt 5 ke Ca Li SA A fax 31 78 6332 309 Parts of ts daturnent reay anty a re nirilirerl alter Telephone 31 78 6 332 332 sos Ded owt ea Lertin neni nl s Yaha rafi i Batu TITIA permission Telefax 41 786 332 309 i N n QATIN PI NMED nae rhumkm Figure 23 ATEX certificate 0270 for i variant Figure 24 ATEX certificate 0271 for i n variant Physical Technical Testing Institute f N FTIN Physical Technical Testing Institute Ostrava Radvanice NES y Ex k Ostrava Radvanice X EC Type Examination Certificate 1 EC Type Examination Certificate Equipment or Protective Systems Intended for use 2 Equipment o
63. r Protective Systems Intended for use in Potentially Explosive Atmospheres in Potentially Explosive Atmospheres Directive 94 S EC Directive 94 9 EC 3 EC Type Examination Certificate Number id EC Type Examination Certificate Number FTZU 05 ATEX 0270 FTZ 05 ATEX 0271 4 Equipment of protective system Gas velume corrector device type GAS CADA 4 Equipment or protective system Gas valume corrector device type GAS CABA 3 Manufacturer vemm tec Messtechnik GmbH 2 Manufacturer vemm tec Messtechnik GmbH if Address Gartenstra e 24 14482 Potsdam Germany 6 Address Gartenstra e 20 14482 Potsdam Germany 7 This equipment or protective system and any of acceptable variation thereto is specified in the 7 This equipment or protective system and any of acceptable vanation thereto is specified in the schedule torte certificate ndiihe documents inersin catered to schedule to this certificate and the documents therein referred to 8 The Physical Technical Testing Institute notified body number 1026 in accordance with Article 9 8 The Physical Technical Testing Institute notifed body number 1026 in accordance with Article 9 af the Council Directive 4 9 EC of 23 March 1994 certifies that this equipment or protective of the Council Directive S4 9 EC of 23 March 1994 certifies that this equipment or protective system has been found to comply with the Essential Health and Safety Requirements relating to system has been found to comply
64. ration run and user identification if a hardware key has been used Furthermore it includes specific data related to performed operations IOM January 2007 Page 21 GAS CADA vemm tec Table 5 Parameters and other actions available on different access levels g ad c metrological modifications metrological mod ad e data reading ad d non lt write into settin lt a NJN set factory data configuration of the service switch function oad firmware set reference temperature and pressure configuration of the metrological parameters of the EVCD change adjust transmitter set base and error base volumes set primary and error primary volumes set gas parameters set compressibility calculation method metrological values set units constants values set archiving measuring period change passwords reset archives reset setting archive set device real time O 3 D uu ad a factory 0 NJN 3 ad b ASC lt D lt D D lt lt lt D D D NJN lt I lt lt O lt lt lt NJN lt D lt D D D i D D lt D lt lt D D D i D D lt D lt D D lt I lt af nn lt I lt He NJN lt I lt at NJN lt D lt D configuration of the metrological parameters of the EVCD yes yes es read values archives parameters Only in
65. rer or supplier identification only and may be trademarks registered trademarks of these companies Copyright 2006 by vemm tec Messtechnik GmbH Potsdam Babelsberg Germany All rights reserved No part of this work may be reproduced or copied in any form or by any means graphic electronic or mechanical without first receiving the written permission of vemm tec Messtechnik GmbH Potsdam Babelsberg Germany 2 3 Brief description The vemm tec GAS CADA gas volume converter hereafter device is designed for conversion of a gas volume under operational conditions into a gas volume under base conditions The device counts volume pulses from a gas meter Temperature and gas measurements are performed by digital transmitters These transmitters communicate with the device using the RS 485 bus and the ModBus protocol Gas compressibility ratio calculation is based either on common methods or a constant value usage The device is available in various models depending on your requirements variant for installation in hazardous area zone 1 iin variant for installation in hazardous area zone 2 Single channel device for 1 gas meter 1 temperature probe and 1 pressure transmitter Dual channel device for 2 gas meters 2 temperature probes and 2 pressure transmitters Device with internal or external pressure transmitters Device with IrDA optical interface The device can be powered by a LP 03 lithium battery The lifetime of this batte
66. ry input No 8 positive pole x S 9 GND_BIN negative pole common to bnaryinputs IOM January 2007 Page 35 GAS CADA vemm tec 4 8 6 Serial connection between GAS CADA and PC Figure 19 Serial connection between GAS CADA and PC Cannon SF Cannan 25F1 terminal black GAS CAD to the PC connect shiel ding to the box 4 9 Installation of accessories for GSM GPRS communication In order to communicate in GSM GPRS networks the following accessories must be added modem modem power supply and device power supply if required The device power supply is advisable when frequent communication is necessary There is also a possibility of additional connections using digital inputs In the event of any doubts or different requirements please contact our company We will develop for you a design solution according to your specification Figure 20 illustrates accessories for the i n variant Figure 21 illustrates accessories for the i variant The comparison of both figures shows higher complexity for the i variant because of a higher level of device safety with respect to the explosion protection The accessories can be mounted in the TEC BOX Accessories for the i n variant see Figure 20 The circuit breaker performs overcurrent protection and main switch functions The intrinsically safe power supply provides power to the device The power supply feeds the modem and relay The modem ensures the device comm
67. ry is 6 years when operated in the defined mode Battery power supply also enables to use pulse inputs External power supply can be connected if required by demanding applications The case of the device is an aluminium alloy housing with IP65 protection Mechanical design of the device allows for dual channel construction with two internal pressure sensors and two temperature transmitters Gas meter pulses can be detected through the low frequency pulse input from the reed contact or the high frequency pulse input from the NAMUR gas meter output The device contains 4 inputs that can be configured as pulse or binary For example binary inputs can operate as inputs that are checking connections with the gas meter or they can perform other functions such as door opening detection or valve Page 6 IOM January 2007 GAS CADA vemm tec position Another 4 binary inputs are available in the D Sub9 extension connector The GAS CADA has 4 outputs that can be configured as pulse or binary outputs The binary outputs can be connected to an additional d A converter digital analog which provides an analog signal 4 20 mA The archive of measured values is implemented in the device offering configuration options for structure and saving period There is also a binary archive that registers changes on binary inputs and occurrence of monitored events for example limits errors In daily and month archives you can program how to save important v
68. s Current settings can be found by means of the service software GASCcomm The following three settings are available e The setting can be made with service switch in the ON position e The setting can be made with service switch in the OFF position switch protection disabled e The modification of metrological parameters can be made with the service switch in the ON position This variability installed in the device should especially allow the users to apply different approaches when working with the device for example remote parameter settings 2 15 2 Password system and access levels The device is delivered with a system of passwords that must be known to perform device operations Based on the knowledge of a given password or the usage of a hardware key a corresponding access level is assigned to the user On some levels the password system is combined with the requirement of the metrological switch being in the ON position The service switch function is variable as described above Users are classified on the basis of access level as follows a Factory level b Worker of the accredited service centre hereafter ASC c User authorized to modify both metrological and non metrological parameters d User authorized to modify non metrological parameters e User authorized to read data Level a provides the least restricted access to device functions Higher access level always includes the rights of al
69. s T absolute pressure under base conditions pp and gas compressibility factor under base conditions Zp Formula 2 Volume under measurement conditions primary volume loe N imp ae k factor imp m Formula 3 Gas compressibility ratio A Z K Z Formula 4 Conversion factor C p Tb 7 1 Db t 273 15 K Formula 5 Volume under base conditions base volume V V m C IOM January 2007 Page 9 GAS CADA vemm tec The gas compressibility factor Z expresses the difference between natural gas characteristics and ideal gas characteristics The parameter setting allows a selection of a method of a compressibility factor calculation according to AGA NX 19 AGA NX 19 mod AGA 8 G1 AGA 8 G12 AGA 8 92 DC or SGERG 88 standards A constant value can be used for gases other than natural gas If a temperature or a pressure value exceeds a limit determined by a selected calculation method standard the default compressibility value will be used Table 1 Overview of standards for compressibility calculations and validity ranges Standard Pressure ranges Temperature measurement AGA NX 19 80 520 kPa 25 to 60 AGA NX 19 mod 200 1000 kPa AGA 8 92 DC 400 2000 kPa 700 3500 kPa 1400 7000 kPa C SGERG 88 80 520 kPa 25 to 60 C AGA 8 G1 200 1000 kPa AGA 8 G2 SGERG 88 400 2000 kPa 10 to 60 C AGA 8 G1 700 3500 kPa AGA 8 G2 1400 7000 kPa The
70. s needed without breaking the official sign Figure 7 Application example measurement in a single line regulating station gas temperature measurement gas pressure measurement gas pulse detection zone 1 or zone 2 for i variant zone 2 for i n variant area without explosion hazard 4 2 2 Installation in a dual line requlating station measurement and monitorin The advanced solution provides complex measuring and monitoring of the regulating station The custody transfer measurement is installed in both the main and backup lines The extension module is mounted close to the GAS CADA to facilitate installation of additional sensors and transmitters Quick closing devices are monitored Filter clogging is detected by means of differential sensors with binary outputs binary information on filter clogging belongs to additional device parameters Inlet pressure of the regulating station is measured in order to maintain agreed pressure level of the gas supply The pressure is measured by the transmitter in a variant designed for relative pressure measurement Gas temperature is measured by the sensor to ensure the preheating control The control is performed by GAS CADA using a defined equation Both digital transmitters are interconnected with the device through an extension module Odorization control is provided by the binary output The number of supplied pulses is defined by the sum of gas volume increment in both lines multi
71. st operate continuously within the defined limits both during and after the test EN 61000 6 2 Functional criterion B The device must operate continuously within the defined limits after the test Temporary impairment to operational behaviour is allowed during the test Changes to current operational conditions or lost of data in the memory are not allowed EN 61000 6 2 IOM January 2007 Page 11 GAS CADA vemm tec 2 8 2 Explosion proof design i variant and i n variant The device is delivered in two variants with respect to the explosion proof design called i and i n e The i variant ensures explosion protection of all circuits according to EN 50020 Additional equipment must be used to connect the device to other facilities The i variant does not include fuses It is designed for zone 1 and zone 2 e The ji n variant ensures explosion protection of the RS 232 RS 485 serial line and digital input circuits according to EN 50 021 The explosion protection of the measuring section and other device parts is the same as the one of the i variant according to EN 50020 It is possible to connect additional equipment to the circuits with EN 50021 protection if certain requirements are fulfilled The i n variant has six fuses F1 to F6 separating the wall and the RS 232 communication It is designed for zone 2 The actual variant of the device can be identified by the above mentioned items and by
72. station 26 Figure 9 Application example measurement in a single line regulating station with the device installed outside the ex Zone in area 2 27 Figure 10 Installation of the conversion device on the mounting plate 28 Figure 11 MOUMUNG ONMING DIDE u u uu renault 29 Figure 12 MOUNUNG OM S SSIHIG P Dar u n nuna u X Su u na u aa du susu 30 Figure 13 Connection of the temperature probe with a vertical weldolet 31 Figure 14 Device assSe ibiy WIllIfIguuu uuu u u mnm anan ei 32 Figure 15 Cable braid Connected in a DUShI gu u u u aa nn 33 Figure 16 Terminal block of the external power supply and binary inputs 33 Figure 17 Terminal block of binary outputs and RS 232 RS 485 communication 34 Figure 18 Terminal block for temperature and pressure transmitters 35 Figure 19 Serial connection between GAS CADA and PC 36 Figure 20 The GAS CADA i n variant accessories for the GSM GPRS communication 36 Figure 21 The GAS CADA i variant accessories for the GSM GPRS communication 37 Figure 22 NMi type approval
73. t eate may only he renrnsi rts erteety and wiheutasy change sened e intl uded 1h s certificate may only oe repracucec in ns cetinty ard without any change schedule incuded DE Ea ea Te qa A ee Saree acres ae Sa et eae Paar En ROA yee EE ET an Ge VEAL Parski 719007 stroke Hands ines del EU Aue SATTE Tan 12 896 242 RT era Hu a In cz pe a 5 a ED j te IOM January 2007 Page 47 p A p a 9 SAFETY INSTRUCTIONS AND WARNINGS The instructions regarding explosion protection in Section 4 5 and Section 4 6 must be considered thoroughly especially if the device is installed in a hazardous area This metering device can only be operated by trained person nel in compliance with technical conditions safety regulations and relevant standards Other legal and safety directives intended for specific purposes must be taken into account Similar measures apply also to device accessories usage The information contained in this manual cannot be conside red to be a legal obligation of vemm tec Messtechnik GmbH vemm tec reserves the right to make changes at any time without notice This includes changes to the manual or to the product itself leading to device improvements or to corrections of typographic or technical faults Please report any problems to the manufacturer Jan 2007 vemm gt Messtechnik GmbH tec vemm tec Messtechnik GmbH Gartenstrasse 20 14482 Potsdam Babelsberg Germany Tel 49 0 331 7096274 Fax
74. tery and main if used In addition to the electronic parts there are one or two pressure transmitters in the housing The outlets shall be connected to a 6 x 1 mm pipe Six cable terminals of PG7 type with IP 68 protection are installed in the lower part of the housing for connection of input and output signals It is possible to have a conductive connection between cable braid and the device The front side of the housing has an optical interface for communication with HIE 01 infrared head or IrDA head Besides 6 buttons are provided for operating the display The housing cover is joined by hinges with the basic part of the device The bottom side is secured by bolts with borings ready for device sealing IOM January 2007 Page 27 GAS CADA vemm tec Figure 10 Installation of the conversion device on the mounting plate Pressure pipe Bolt M5x40 L5 td Man fact Seil Mounting plate ce 4 3 1 Mechanical assembly with the mounting plate Mechanical assembly of the GAS CADA device is facilitated by the mounting plate The device is to be fastened while the cover is open 4 bolts M6 x 25 are to be screwed through borings in separated box corners Afterwards the cover must be closed and fastened It is possible to mount 1 or 2 three way valves to the mounting plate with 2 bolts M5 x 10 and a beam according to the number of pressure transmitters Connection between the three way valve and pressure input of the device will
75. tive protocol of GAS CADA It provides a complete set of functions realized in the device Service software GASCcomm only makes use of this protocol if there is a need to switch into a different data link layer the VTE ver 2 protocol is only embedded in another data link layer the so called tunnel The VTE ver 2 protocol is solely used to load firmware and to realize the device protection based on a password system TH QMD protocol by PROTECO systems s r o is intended mainly for telephone modem communication The SRD protocol by PROTECO systems s r o is designed for radio modem communication Both protocols provide options of instantaneous data reading data archive and binary archive They also allow settings of output values and setpoints The ModBus protocol is intended especially for interconnections with external control systems and visualising software applications using direct lines due to its currency and versatility 2 14 1 Communication with a modem controlled by AT commands Basic modem configuration required for correct interaction with GAS CADA e Return result codes QO e Full word result codes V1 e Commands are not echoed EO e Answer incoming call automatically More detailed information can be found in the particular modem user manual 2 14 2 Communication with GSM and GPRS modems To facilitate diagnostics during modem installation the device can display its presence and connection to the GSM network as we
76. ues Surge immunity test EN 61000 4 6 1996 A1 2001 Electromagnetic compatibility EMC Part 4 6 Testing and measurement techniques Immunity to conducted disturbances induced by radio frequency fields EN 61000 4 11 1994 A1 2001 Electromagnetic compatibility EMC Part 4 11 Testing and measurement techniques Voltage dips short interruptions and voltage variations immunity tests EN 61000 6 2 2001 Electromagnetic compatibility EMC Part 6 2 Generic standards Immunity for industrial environments EN 61107 1996 Data exchange for meter reading tariff and load control Direct local data exchange Other standards Modicon Modbus Protocol Reference Guide Modicon Inc Industrial Automation Systems 1996 Page 46 IOM January 2007 GAS CADA vemm tec Figure 22 NMi type approval and test certificate Test certificate M Type Approval Mi Meatinstituut Meetinstituut Number TC3571 Revision 2 Projectnumber 505837 Page 1 of 5 Number T6793 Revision Proyectnumber 505837 Page 1 of 3 in case of dispute the Dutch text of the Type Approval is decisive issued hy NMI Certin B V Issued oy NMI Certin BY Hugo de Grootp ein 1 Hugo de Gro tpleim 3314 EG Dordrecht 3314 EG Dordrecht The Netherlands TAO Vator ees In accordance with the applicable articles stated in the regulations on qas meters in accordance wath article 1a second zaragraph of the IJkwet Weights and Measures iasi Applicant VEMI
77. unication for recommended types see Section 2 14 2 Separation of inputs by means of relay is advantageous for trouble free connections via pulses or binary outputs Figure 20 The GAS CADA i n variant accessories for the GSM GPRS communication TEK BOA FLOW THROUGH VOLUME TPIT FAILURE SIGNALLING ETC 230V 50Hz GAS CADA GAS CADA POWER SUPPLY OUTPUTS RS 232 GAS CADA Optional Page 36 IOM January 2007 GAS CADA vemm tec Different accessories for the i variant see Figure 21 The main difference is in interconnection used for communication with the device For the i variant the intrinsically safe RS 485 line is used Additional equipment must be used to ensure modem separation The zener barrier or separator must be used to separate digital outputs for purposes of connection with the device environment Figure 21 The GAS CADA j variant accessories for the GSM GPRS communication TEC BOX FLOW THROUGH YOLUME GUT PUT FAILURE SIGNALLING GAS CADA GAS CADA POWER OUTPUTS SUPPLY RS 485 GAS LCADA 220W 50Hz Optional IOM January 2007 Page 37 GAS CADA 5 OPERATION 5 1 Technical specifications 5 1 1 Mechanical parameters dimensions w x h x d mass box material connecting terminals conductor cross section 5 1 2 Ambient parameters protection operating temperature storage temperature operating position humidity protection against direct
78. urement conditions error primary volume m Zee gas compressibility factor under measurement conditions Zee gas compressibility factor under base conditions IOM January 2007 Page 5 GAS CADA vemm tec 2 INTRODUCTION 2 1 Dear customer vemm tec Messtechnik GmbH thanks you for your confidence when purchasing the GAS CADA gas volume conversion device Our development team which has a long term experience in design of previous models aims to understand needs of our customers and reflecting these needs in the design The GAS CADA device is based on modern components in order to reach excellent accuracy and high reliability In addition it provides other features and highly variable design that can be rarely found in this product category thus improving your investment returns Due to extension options of the device you will be better prepared for the future 2 2 Notice vemm tec Messtechnik GmbH vemm tec shall not be liable for technical or editorial errors in this manual or omissions from this manual vemm tec makes no warranties express or implied including the implied warranties of merchantability and fitness for a particular purpose with respect to this manual In no event shall vemm tec be liable for any special or consequential damages including but not limited to loss of production loss of profits etc Product names used herein are for manufactu
79. utput unit which provides a current signal 4 20 mA Correct functioning of digital outputs requires supply voltage connected to the U2 and GND2 terminals 2 12 4 Digits on the display Base volume counter operates with 9 digits in front of the decimal point The error status volume counters have the same number of digits as the normal status counters 2 13 Data archives These archives are stored in the FLASH memory They register mean values and other calculated values of individual values Archive structure as well as other properties can be modified using parameter settings The available memory space is allocated for archives with fixed number of records daily monthly or binary the remaining space contains the data archive Configuration variants result from Table 4 or from the service software GASCcomm All archives can be displayed except of setting archive or processed using the software Custom archive Values are saved periodically into this data archive with a period adjustable between 1 s and 1 hour Values in this archive are accompanied with related timestamps If the archive becomes full new data will overwrite the oldest ones For bit values occurrence of the active state within the archiving period is registered For binary inputs the active state can be defined using parameter settings while for setpoints and errors the active state is logical 1 Daily archive This archive has similar properties to the data
80. whether any defect was discoverable or latent at the time of delivery of the Goods to the Customer Goods once delivered may be returned to vemm tec only with prior written authority from vemm tec unless those Goods are accepted by vemm tec as being defective as to the material or workmanship In the event of a return authorized by vemm tec vemm tec shall have the right to charge carriage to and from the delivery location and the costs involved in the removal of the Goods from the Customer s premises All further claims of the Customer against vemm tec as well as our subcontractors are in accordance with the law excluded including compensation for consequential damages and damages based on repairs and replacements except in the case of conscious negligience or compulsory liability for the lack of guaranteed qualities Claims for warranty and service need to be addressed to the vemm tec office or to the vemm tec agent where the meters originally are ordered IOM January 2007 Page 45 GAS CADA vemm tec APPENDIX WITH TABLES AND FIGURES Table 15 Technical standards rules and guidelines International standards ISO 12213 part 3 Natural gas Calculation of compression factor EN 12405 2002 Gas volume electronic conversion devices EN 50014 1997 A1 A2 Electrical apparatus for potentially explosive atmospheres General requirements EN 50020 2002 Electrical apparatus for potentially explosive atmospheres Intrinsic saf
81. y disconnection or discharge Pulses read during the battery disconnection are loaded into backup counters after the battery is reconnected IOM January 2007 Page 17 GAS CADA vemm tec Number of digits for pulse counters For the LF pulse inputs the counter operaties with 9 digits the gas meter constant determines the magnitude from 9 999 999 9 for constant 0 1 to 99 999 999 900 for constant 100 For HF pulse inputs the counter operates with 9 digits Changing the units setting the gas meter constant Pulse inputs units can be changed using the service software GASCcomm Only decimal multiples or fractions within the range of 0 01 100 are considered when performing these changes Binary inputs These inputs can be used to detect input signals with two discrete states 0 or 1 Parameter settings allow the user to display instantaneous values save input changes into the archive file replace the 0 or 1 states by a defined text and specify the active signal level 2 12 3 Digital outputs The device contains 4 digital outputs that can be configured as binary outputs or pulse outputs with adjustable pulse width and period These outputs can be controlled by the device which applies specified equations such as output based on the passed gas volume or indication of an alarm condition or from a master device The maximum output can be 65 535 pulses The digital outputs can also be configured to provide a codified signal to an analog o

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