Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400
Contents
1. Computer either totalizes the flowmeter pulse input signal or determines the flowrate from the data received serial from the flowmeter SeniorSonic Ultrasonic Flowmeter Theory of Operation Daniel s ultrasonic gas flow metering technology incorporates multiple pairs of transducers into a smart digital inferential instrumentation device This device is installed into a gas pipeline system to measure gas flow Each pair of transducers emits ultrasonic acoustic pulses that travel bi directionally to and from each transducer in the pair Four 4 pairs of transducers are positioned across the meter so that the path between each transducer has an axial component i e one 1 transducer is upstream relative to the other Pulses emitted by the downstream transducer are slowed down by the velocity of the fluid with flow the pulse takes longer to travel to the upstream transducer than with no flow Pulses emitted by the upstream transducer are aided by the velocity of the fluid with flow the pulse takes less time to travel to the downstream transducer Ultrasonic flowmeters such as the SeniorSonic 3400 that apply delta time methodology measure these two travel times to determine both the linear fluid velocity and the speed of sound in the fluid The flowmeter can measure fluid velocity for bi directional forward reverse fluid flow OMNI Flow Computer Logic The OMNI Flow Computer can determine the actual flow rate from data received either serially2. IGA NON sc accats fences aac ova at tant de Meneses dddvledenk civ aehauahauntdcadtned eocadeercttueastteAGemeaus 5 Wining Installation eect mee te re e er re nee ne er eer eee 5 OMNI Combo Module Terminal Assignments cccesscceeeeeseeeeeeeeeeeeeseeeeeeeeeeesaaaeeeeeeaaeeees 5 SeniorSonic 3400 Terminal Assignments ccceeccceeeeeeneceeeeeceaeeeeeeaaeeeseeaeeeeeeeeeeaeeeeeeaaaeees 7 Other SeniorSonic 3400 Terminal Assignments ccceceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaeeeeesenaaeeees 7 Forward amp Reverse Flow Signals ccceccceceeeeececeeeeeeaeeeeeeeaaeeeeaaaeeeeesaaeeeeeeseaaeeeeeesaaeeeees 9 Forward Flow Only with Dual Pulse Fidelity amp Integrity Checking sssssssssssrssssrnneesssenssrerrssne 10 Forward amp Reverse Flow with Dual Pulse Fidelity amp Integrity Checking ceeeeeeeeee 11 OMNI Flow Computer CONTIQUPATIO Rs ccets cao feat aishaccenescheatenecenenteme etal eadeinncnnaaaione teed mate neubenae 12 Miscellaneous Configuration Meter Run Settings ccccccceeceesceeeeeeeeneeeeeeeeeeeeeeeeeeeeeeeeneeees 12 Meter Run Setup Entiiess si2v atc ch 1 casters ceancdashieceaadebec anus tanetoes sh jennues Seceitensgtacncndceecaten oevecea te 12 OMNI Flow Computer Database Addresses amp Index Numbers c seeeeeceeeeeeeeeeeeeeeeeeeeeees 13 OMNI Flow Computer User Displays sisi ciscrecceseessteececeesan esis eecodexdaesuhacavndemeetdes tile pees piaceeedoas teeni
3. Run Number Gas velocity A 1 Database Address for Meter Run Number Gas velocity C Gas velocity D for Meter Run Number Pit 2 3 4 i i IN N 52 0004 0003 Rev C uw Omni Page 14 of 18 TB 020501C Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400 SeniorSonic Table 16 Flow Computer Configuration Data Miscellaneous Meter Run Configuration Database Address Database Address Description for Meter Run Number Description for Meter Run Number a ee ce a ES Primary Flow O Serial 1 Puses Fd Table 17 Flow Computer Configuration Data Meter Run Setup Database Address Database Address Description for Meter Run Number Description for Meter Run Number o Daniel Ultrasonic K factor 17538 Maximum flow deviation 17513 17613 17713 17813 Minimum burst 17515 Meter maximum downtime 3116 3216 3316 3416 Maximum VOS deviation 17516 17616117716117816 minutes 17638 17738 17838 17615117715117815 N N 52 0004 0003 Rev C us Omni Page 15 of 18 TB 020501C Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400 SeniorSonic OMNI Flow Computer User Displays SV Module Serial Communications Port You can view live data received via RS 485 communications on the flow computer front panel LCD display only if a SV port is used to input the RS 485 interface from the SeniorSonic flowmeter To view this data press Setup n Display on
4. flow NOTE Daniel Industries recommends a minimum of sixty 60 minutes for this setting due to the fluctuating flow pulse frequency output by the flowmeter 52 0004 0003 Rev C Y Omni Page 12 of 18 TB 020501C Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400 SeniorSonic e Maximum Flow Deviation Percent Only valid if a flow pulse s I O point is assigned This is the allowable percent of deviation between the calculated flow from the pulse input channel compared to the SeniorSonic flow data received via the OMNI SV serial port The OMNI raises the pulse suspect alarm if the flow deviation percentage exceeds this limit NOTE Refer to the Flow Minutes setting previous e Maximum Meter Downtime Enter the maximum allowable flowmeter downtime in minutes If communication downtime between the OMNI and the SeniorSonic is greater than this value the OMNI will not adjust its internal totalizers to match the most recent SeniorSonic totalizer value Depending upon how much time the communication link and pulses were inoperative and the amount of flow that occurred during this downtime when communications is reestablished within the time specified in this setting the OMNI may have to add a significant amount of flow to its totalizers Default 15 OMNI Flow Computer Database Addresses amp Index Numbers Tables 9 thru 17 list the Modbus database addresses assigned within OMNI firmware to the SeniorSonic ultrasonic
5. 000 has an E module plugged into slot TB5 and an SV module in slot TB6 DANIEL SENIORSONIC ULTRASONIC FLOWMETER P2 Electronics Peripheral Field Connection Board E Combo Module Terminals TB5 DIG GND DIG GND FREQIA FREQ1B FREQ2A FREQ2B Pulse In 3rd Input Channel Pulsen 4th Input Channel Signal Return RS 485C 485 pare O RS 485 RS 485 Dena Port 2 RS 485C RS 485 RS 485 Figure 3 Daniel SeniorSonic 3400 Example of wiring a Daniel SeniorSonic 3400 ultrasonic flowmeter Figure 3 to an OMNI 6000 Flow Computer with connections for serial data live forward flow signal and pulse fidelity and integrity checking 52 0004 0003 Rev C U Omni Page 10 of 18 TB 020501C Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400 SeniorSonic Forward amp Reverse Flow with Dual Pulse Fidelity amp Integrity Checking Figure 4 is a typical wiring installation between the SeniorSonic with P2 of the connection board 3 3400 017 and an OMNI 6000 for serial data and both forward and reverse flow signals with connections for pulse fidelity and integrity checking Figure 4 assumes that the OMNI 6000 has two 2 E modules in slots TB5 and TB6 and an SV module in slot TB7 DANIEL SENIORSONIC ULTRASONIC FLOWMETER P2 Electronic Peripherial Field Connection Board E Combo Module Terminals TB5 DIG GND 1 DIG GND 2 FREQIA J FREQIB FREQ2A Pulsen 5 3rd Input Channel FREQ
6. 17 in the Senior Sonic to connect to the OMNI Tables 5 and 6 specify the terminal assignments for each of these terminal blocks This information is necessary when connecting wires to the Senior Sonic NOTE Users of this Meter Model MUST verify the revision level of the installed meter and refer to that revision s Operations and Installation Manual supplied with the meter for the correct terminals required for meter frequency and serial wiring The wiring terminals will vary for each revision level Table 5 SeniorSonic 3400 Electronics Board Terminal Block P2 Assignments Board 3 3400 017 Note 12 11 and 10 are internally connected to 9 8 and 7 Other SeniorSonic 3400 Terminal Assignments Tables 7 and 8 specify the terminal assignments for the terminal block 2 3 3400 421 NOTE Users of this Meter Model MUST verify the Revision level of the installed Meter and refer to that revision s Operations and Installation Manual supplied with the meter for the correct terminals required for meter frequency and serial wiring The wiring terminals will vary for each revision level E T 52 0004 0003 Rev C X Omni Page 7 of 18 2 TB 020501C Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400 SeniorSonic Table 7 SeniorSonic 3400 Electronics Board Terminal Block J4 and J5 Assignments Board 2 3 3400 421 Signal Description To Flow Computer GND1 To Flow Computer FOUT2B N 52 0004 0003 Rev C Y Omni
7. 2B 6 4th Input Channel Signal Return 3rd Input Channel 4th Input Channel Electronics Termnial Board RS 485C RS 485 RS 485 RS 485C RS 485 RS 485 Figure 4 Daniel SeniorSonic 3400 Example of wiring a Daniel SeniorSonic 3400 ultrasonic flowmeter Figure 4 to an OMNI 6000 Flow Computer with connections for serial data live forward reverse flow signals pulse fidelity and integrity checking 52 0004 0003 Rev C U Omni Page 11 of 18 TB 020501C Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400 SeniorSonic OMNI Flow Computer Configuration Use the flow computer s front panel keypad to enter configuration settings unique to the SeniorSonic Flowmeter The configuration settings that are specific to the SeniorSonic flowmeter are under Miscellaneous Setup Configure Meter Run menu and the Meter Run Setup menu Enter the miscellaneous configuration meter run settings first and then proceed to the meter run setup entries Review Chapter 2 Flow Computer Configuration in Volume 3 of the OMNI User Manual and the Technical Bulletin 960701 52 0000 0001 Overview of OMNICOM Configuration PC Software Miscellaneous Configuration Meter Run Settings The following miscellaneous configuration meter run settings correspond to the SeniorSonic ultrasonic gas flowmeter e Select Flowmeter Device Type For each meter run enter 8 to select the Daniel Ultrasonic flowmeter as the device type e Se
8. Last Updated 15 March 2010 TB 020501C Technical Bulletin Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400 SeniorSonic OMNI FLOW COMPUTERS INC ps 1 e 12620 West Airport Boulevard Suite 100 US Omni Sugar Land Texas 77478 United States of America Phone 281 240 6161 Fax 281 240 6162 www omniflow com 52 0004 0003 Rev C TB 020501C Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400 SeniorSonic NOTE User Manual Reference This Technical Bulletin complements the information contained in the User Manual applicable to Revision 23 74 27 74 The Daniel SeniorSonic ultrasonic flowmeter measures gas flow by using the Time Travel method of acoustic pulses This service communicates with OMNI Flow Computers via OMNI s SV process I O combo module using a proprietary protocol To use the scaled pulse output of the Daniel Senior Sonic Metering the flow computer must at least either have an A B or E combo module installed Table of Contents SS COPIG eect iat ate fs alee areola eens rege See tte E E AEE hens deine eed ane cue A 3 PRS WAG reiri seer etna aden dec crate liad ieee a a a Ea a tet A RS eee A aE 3 SeniorSonic Ultrasonic Flowmeter Theory of Operation cccccceceeeeeeeeeeeceeeeeseneeeeeeeeeeeeeeeees 3 OMNI Flow Computer Logic ix 2 cceacatens cceraside scceCesteaccnnacsse Sewadedend cenaniat aesaenss Gee lt p stedt trst eamenecn wee ennnen 3 Modbus COMmmUT
9. Page 8 of 18 TB 020501C Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400 SeniorSonic Forward amp Reverse Flow Signals Figure 2 is a typical wiring installation between the Daniel SeniorSonic with P2 of the connection board 3 3400 017 and an OMNI 6000 for serial data and both forward and reverse flow signals Figure 2 assume that the OMNI 6000 has an A module plugged into slot TB5 and an SV module in slot TB6 DANIEL SENIORSONIC ULTRASONIC FLOWMETER P2 Electronics Peripheral Field Connection Board A Combo Module Terminals TB5 DIG GND DIG GND FREQIA FREQIB FREQ2A FREQ2B rd Input Channel th Input Channel RS485C RS 485 RS 485 RS 485C RS 485 RS 485 Figure 2 Daniel Senior Sonic 3400 Example of wiring a Daniel SeniorSonic 3400 ultrasonic flowmeter Figure 2 to an OMNI 6000 Flow Computer with connections for serial data and live forward and reverse flow signals without pulse fidelity and integrity checking 52 0004 0003 Rev C U Omni Page 9 of 18 TB 020501C Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400 SeniorSonic Forward Flow Only with Dual Pulse Fidelity amp Integrity Checking Figure 3 is a typical wiring installation between the Daniel SeniorSonic with P2 of the connection board 3 3400 017 and an OMNI 6000 for serial data and forward flow signals with connections for pulse fidelity and integrity checking In Figure 3 assume that the OMNI 6
10. d the pulse input channel if assigned will be used as a backup means of flow calculations by the flow computer 1 Select Pulse Input as primary flow This means that the flow pulses received from the flowmeter will be the primary and the SV serial communications data will be used as a backup means of flow calculations by the flow computer Meter Run Setup Entries NOTE Difference Between Gas Velocity and Velocity of Sound The velocity of sound VOS refers to the amount of time it takes an acoustic pulse to travel along the gas ultrasonic paths The VOS will vary depending upon gas type and line conditions The following meter run setup entries are available for the SeniorSonic ultrasonic flowmeter when using pulse frequency signals e Velocity of Sound VOS in Gas Deviation Percent from Average In some configurations the flow computer can verify that the average VOS calculated for all paths conforms to the VOS of each individual path This entry is the maximum percent that any one path VOS varies from the average VOS of all the paths e Flow Minutes The time interval can be set for comparing the flow pulses input flow with the SV communications serial link flow If the flow deviation exceeds the Flow Deviation Percent setting see next setting when this comparison is made the OMNI will switch from the primary flow pulses or SV serial link to the backup source SV serial link or flow pulses for calculating
11. em Architecture and Installation of the OMNI User Manual 52 0004 0003 Rev C Y Omni Page 5 of 18 TB 020501C Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400 SeniorSonic Table 2 OMNI SV Combo Module Back Panel Terminal Assignments TBn 6 Signal Return for 4 20mA Analog Outputs Pa Analog Ouput e 420m O o Analog Output 3 420mA SSSOSCS S Note Numbers in parenthesis refer to SV module 2 if installed Table 3 OMNI E Combo Module Back Panel Terminal Assignments TBn 6 Input Channel 4 Flowmeter Pulses 8 RTD Excitation Current Source Output 2 9 RTD Excitation Current Source Output 1 Signal Return for Terminals 5 6 7 8 9 11 amp 12 Internally connected to DC power return Table 4 OMNI A Combo Module Back Panel Terminal Assignments TBn 6 input Channel 3 Isolated Signal Rem Input Channel 4 Flowmeter Pulses 8 Input Channel 4 Isolated Signal Return 9 RTD Excitation Current Source Output 1 10 Signal Return for Terminals 9 11 amp 12 Internally connected to DC power return Analog Output 1 4 20mA 12 Analog Output 2 4 20mA or RTD Excitation Current Source Output 2 See JP12 Setting e 52 0004 0003 Rev C Omni Page 6 of 18 TB 020501C Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400 SeniorSonic SeniorSonic 3400 Terminal Assignments Using the two 2 P2 terminal blocks 3 3400 0
12. eniorSonic Yes No Figure 1 Daniel SeniorSonic 3400 Ultrasonic Gas Flowmeter In the event of a communication failure between the two 2 devices the OMNI will not receive serial data However the SeniorSonic may be fully operational and continue to accumulate volume In this case if a pulse signal is available from the flowmeter and the OMNI Flow Computer is configured to receive the flow pulse signal as a backup the flow computer will automatically continue to accumulate flow based on this flow pulse train When normal communications resume the flow computer will validate and adjust its internal totalizers if necessary to match the SeniorSonic internal totalizer The flow computer automatically adjusts its totalizers to account for the small amount of flow that takes place before it detects that a communication failure has occurred i e the OMNI does not immediately start totalizing using the SeniorSonic pulse train If a pulse signal from the SeniorSonic is not available and the communication link fails the flow computer immediately stops totalizing Once communication is reestablished the OMNI will adjust its internal totalizers to match the SeniorSonic totalizer In this case the OMNI may have to add a significant amount of flow to its totalizers depending upon how much time the communication link was inoperative 2 52 0004 0003 Rev C Omni Page 4 of 18 TB 020501C Communica
13. es 16 SV Module Serial Communications Port ccecsccceeeeesccceeeeeseeeeeeesnaaeeesesaeeeseeeseaeeteeneaaaees 16 Meter R n Datassist a a Aaa V R Ses TOE RSS AE adenomas nea 17 Figures Figure 1 Daniel SeniorSonic 3400 Ultrasonic Gas Flowmeter cccceseeeeeeeeeeeeeeeeeeeeeeeeeeeeees 4 Figure 2 Daniel Senior Sonic S400 ives csecieences nevis ecauneseanesedetetastdacexessnuetenieyuel aeakapioos pieaumndnieapadiers 9 Figure 3 Daniel SeniorSonic S400 ices ase cseeitthanehantertetch aise elated Mogan alae 10 Figure 4 Daniel SeniorSonic S400 0g sscocdics stncseensscncteseeedoivwedeeeclanaid ctadecnud tava dianaed dude teemeeenes 11 Figure 5 Display Mode exc cc ates sicencsbh ettentels narciaetetiabsdiasattarataaecdedanletdacankenntee laatnaaenledepidaeet 16 Figure 6 Meter Run Data Display Mode 2 cceeeeeeccceeceeeeeeseeeeeeeeeeeeeeeeeenseeeeeeeeeeeeeeeeneeenaees 17 2 52 0004 0003 Rev C Omni Page 2 of 18 TB 020501C Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400 SeniorSonic Scope This Technical Bulletin applies to firmware revisions 23 74 and 27 74 of OMNI 6000 OMNI 3000 Flow Computers for gas flow metering systems Abstract The Daniel SeniorSonic ultrasonic flowmeter determines the linear gas velocity through the meter tube by using multiple acoustic pulse paths The flowmeter analyzes these paths employing the delta time travel measurement method The OMNI Flow
14. from the SeniorSonic flowmeter or from a live pulse frequency signal input if one has been connected assigned and configured In this application Modbus serial communication can be configured as the primary measurement source with the pulse frequency configured as the backup measurement source or vice versa to determine the actual flow rate The OMNI Flow Computer can also be configured to use only the Modbus serial communication link with no pulse frequency input When Modbus communications are available the flow computer transmits flowing temperature and pressure to the flowmeter to enable it to correct spool dimensions The flowmeter serially transmits the accumulated volume to the OMNI The flow computer obtains a calculated volume increment by subtracting the new accumulated volume from the last accumulated volume it received The flowmeter updates its totalizers on a regular interval depending upon flowing conditions and configuration settings Updating the OMNI totalizers on this same period would result in somewhat erratic totalizers and sampler pulse outputs which could upset other equipment connected to the flow computer The OMNI provides a smooth totalizer update by monitoring the time interval between SeniorSonic totalizer updates and distributing the volume increment over a matching time period Figure 1 52 0004 0003 Rev C Omni Page 3 of 18 TB 020501C Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400 S
15. lect SV Module Port The OMNI Flow Computer can accept two 2 SV combo modules With one 1 SV module two 2 SV ports are available and with two 2 SV modules four 4 ports are available For each ultrasonic meter run enter the SV port number 1 to 4 to which the SV module s RS 485 serial interface input from the SeniorSonic flowmeter is wired to the OMNI e DFI Address This is the address ID of the Daniel ultrasonic flowmeter communications port e DFI Retry This is the number of SV serial port communications retries the OMNI will attempt with the flowmeter after a communications failure before actually raising a communications fail alarm e Flow I O Point Enter the input channel number that is used to input the ultrasonic flowmeter pulse signal Assign flowmeter pulse signals only to Input Channels 3 and 4 of A or E combo modules or input channel 3 of a B combo module e Select Flow Direction F R SeniorSonic flowmeters allow for bi directional fluid flow measurement For pulse frequency signals setup the flow computer to totalize either forward or reverse flow on any meter run with an ultrasonic flowmeter e Primary Flow This setting instructs the OMNI Flow Computer to use either the pulse input channel or the SV serial communications data as the primary means of calculating flow Options are 0 Select Serial Data as primary flow This means that the SV serial communications data will be the primary an
16. low M3 h m3 h VOS ft s VOS m s Fwd cf Fwd m3 Rev cf Rev m3 P Psi i P Bara T Deg F i T Deg C FlowV PO FlowV PO FlowV P1 FlowV P1 FlowV P2 FlowV P2 FlowV P3 FlowV P3 VOS PO VOS PO VOS P1 VOS P1 VOS P2 VOS P2 VOS P3 VOS P3 Figure 6 Meter Run Data Display Mode 52 0004 0003 Rev C Omni Page 17 of 18 TB 020501C Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400 SeniorSonic DOCUMENT REVISION HISTORY DOCUMENT INITIAL RELEASE DATE ccccccccccceeeeeeeeeeeeees 04 September 2004 REVISION DATE PURPOSE CHANGE REQUEST A 04 September 2004 Maintained on the Web Initial release B 02 April 2009 DCR 090026 C 15 March 2010 DCR 100035 52 0004 0003 Rev C Y Omni Page 18 of 18
17. metering feature These tables categorize data type Table 9 Meter Run Alarm Status Points Real Time Data Database Address Description For Meter Run Number Table 10 16 Bit Integer Register Real Time Data Database Address Description for Meter Run Number Flow direction 0 frwd 1 rvrs 3155 Table 11 32 Bit Integer Register Real Time Data Database Address Description for Meter Run Number Volume From UFM FWD 15530 15630 15730 15830 Volume From UFM REV 15532 15632 15732 15832 NOTE Table 11 Modbus registors are available in 23 74 20 and later 23 75 00 and later 27 74 19 and later and 27 75 00 and later N N 52 0004 0003 Rev C us Omni Page 13 of 18 TB 020501C Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400 SeniorSonic Table 12 32 Bit IEEE Floating Points Real Time Data Database Address Database Address Description for Meter Run Number Description for Meter Run Number Serial Gross flow during Flow 17141 17151 17161117171 Temperature 7105 7205 7305 7405 Minutes period Pulses Gross flow during Flow 17142 17152 17162 17172 Pressure 7106 7206 7306 7406 Minutes period Calculated Flow Dev 17143 17153 17163 17173 Velocity of sound A 17527 17627 17727 17827 Maximum VOS deviation vm 17siefi7ere i77ie v7eiep a a Table 13 32 Bit IEEE Floating Points Previous Hour s Average Data Database Address Description for Meter
18. sonic meter to an OMNI Flow Computer The option to implement depends upon requirements of the flow metering system Always interconnect these devices via a 2 wire RS 485 serial interface from the SeniorSonic to an OMNI SV combo module serial port This connection uses the Modbus protocol to transmit to the OMNI the volumetric flow data that the SeniorSonic accumulates The OMNI also transmits the fluid temperature and pressure to the flowmeter to allow the flowmeter to correct for dimensional changes of the measurement Spool In addition to serial data the OMNI can also receive live forward and or reverse flow pulse signals from the SeniorSonic The SeniorSonic transmits pulse frequencies through wires typically connected to an OMNI E combo module Connecting two 2 SeniorSonic pulse output channels to the OMNI can provide pulse fidelity and integrity checking To perform pulse fidelity checking the OMNI must have one 1 E combo module for each flow direction requiring totalization OMNI Combo Module Terminal Assignments Depending upon the implemented wiring option the OMNI requires SV E and or A combo modules Tables 2 thru 4 specify the terminal assignments for each module type This information is necessary when connecting wires to the OMNI The terminal block number TBn on the OMNI back panel for each combo module corresponds to the slot on the motherboard into which the module is plugged For more information refer to Volume 1 Syst
19. the OMNI front panel keypad where n equals the SV port number 1 to 4 you want to display when in the Display Mode The following data will display Figure 5 SV Port1 Daniel UFM Trans Number Flow cfh TimeLaps TimeLapO Fwd cf Pos Over Rev cf Neg Over P Psi T Deg F KFC p cf FlowVelA FlowVelB FlowVelC FlowVelD VOS Cord A VOS Cord B VOS Cord C VOS Cord D Avg VOS Gain A1 Gain A2 Gain B1 Gain B2 Gain C1 Gain C2 Gain D1 Gain D2 ChordAstatus ChordBstatus ChordCstatus ChordDstatus SW Version SV Port1 Daniel UFM Ver 27 Trans Number Flow m3h TimeLaps TimeLapO Fwd m3 Pos Over Rev m3 Neg Over P mPa T Deg C KFC p m3 FlowVelA FlowVelB FlowVelC FlowVelD VOS Cord A VOS Cord B VOS Cord C VOS Cord D Avg VOS Gain A1 Gain A2 Gain B1 Gain B2 Gain C1 Gain C2 Gain D1 Gain D2 ChordAstatus ChordBstatus ChordCstatus ChordDstatus SW Version Figure 5 Display Mode 52 0004 0003 Rev C U Omni Page 16 of 18 TB 020501C Communicating with Daniel Ultrasonic Gas Flowmeter Model 3400 SeniorSonic Meter Run Data To view the meter run data on the flow computer LCD display press Meter n Display on the OMNI front panel keypad where n equals the meter run number 1 to 4 you want to display when in the Display Mode The following data will display Figure 6 METER X Daniel UFM Ver 23 METER X Daniel UFM Ver 27 GAS Vel m s Gas Vel m s Flow cf h cf h F
20. ting with Daniel Ultrasonic Gas Flowmeter Model 3400 SeniorSonic In some instances adjusting the flow computer s totalizers may not be desirable e g if a flowmeter has been disconnected for a long period of time or the SeniorSonic electronics package has been replaced For these cases there are flow computer configuration settings that specify the maximum time that a SeniorSonic serial communication failure can exist and still be compensated for by adjusting the flow computer totalizers By default this maximum time is fifteen 15 minutes Modbus Communication NOTE The serial interface between these devices is 2 wire RS 485 mode utilizing a modified Modbus protocol The SeniorSonic connects to an external system using the Modbus ASCII protocol via a serial line This connection is typically a 2 wire RS 485 serial link Communications parameters are fixed in the OMNI Table 1 Table 1 Fixed Communications Parameters Seiting Value Baud Rate 9600 Data Bits 7 Stop Bits 1 Parity Even Protocol Modbus ASCII NOTE In order to communicate with Daniel Senior Sonic ultrasonic flowmeters the OMNI Flow Computer must be equipped with at least one 1 SV combo module Model 68 6203 For instructions on jumper settings and other process I O combination module setup information refer to Volume 1 Chapter 2 of the OMNI User Manual Wiring Installation There are several options for wiring a SeniorSonic ultra
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