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LEFM 3xxCi User Manual

IB1406 Rev 12

Section 7

Page 57

February 2017

Figure 7.10 Transducer Housing

Figure 7.11 Transducer Removal

Do not remove the transducer housing retaining components. The mechanical hold downs must

not be modified particularly while the meter is under pressure.

Note – The transducer housings use a retaining system of components. If removing a

transducer, site personnel should never attempt to remove the retaining rings located around the

transducer. This maintenance shall only be done by Cameron trained technicians. See Figure 7.11 for

details.

The transducer housings are pressurized and use two locking rings to keep the housing in place.

Specialized tools and trained personnel are required to remove the housing.

Figure 7.12 Transducer Housings

Remove the transducer internals by a steady pull on the transducer wires.

Verify the transducer housing is clean and free from dirt.

Re-install the transducer internals as follows, referring to Figure 7.13.

Route the wires of the new transducer though the compression spring, the spacer, and the

compression plug.

Apply silicone grease to the transducer face.

Insert the transducer and components into the housing until the parts bottom out.

Re-install the compression plug by pushing it in and rotating it counter clockwise to secure the

transducer assembly in the housing notches.

WARNING

Retaining rings

Compression

plug

Содержание LEFM 380Ci

Страница 1: ...Manual No IB1406 Rev 12 CALDON ULTRASONICS LEFM 3xxCi Family of Gas Ultrasonic Flowmeters with G3 Transmitter User Manual ...

Страница 2: ...anual IB1406 Rev 12 Mark of Schlumberger Other company product and service names are the properties of their respective owners Copyright 2017 Schlumberger Limited All rights reserved Manual No IB1406 Rev 12 August 2017 ...

Страница 3: ...Ci Meter 17 Table 2 3 Uncalibrated Meter Performance 19 20 Remote Mount Meter and Transmitter Installation Model 3xxCi R 20 Remote Mount Terminations Procedure External Junction Box Only 21 Table 3 1 LEFM 380Ci R Transducer and RTD Terminations See Figure 3 2 23 Remote Mount Transmitter Installation Procedure 25 26 Transmitter Connections All Models 26 Transmitter Installation Procedure 26 Table 4...

Страница 4: ...smitter Troubleshooting 46 7 3 Circuit Board Replacement 47 Table 7 1 Circuit Boards 47 7 4 IOP Input Output and Power Supply Board or Power Fuse Replacement 48 7 5 CTC and Display Replacement 50 7 6 MXR Replacement 52 7 7 Transducer Installation 55 7 8 Analog Input Verification 58 7 9 Analog Output and Pulse Output Verification 58 59 Troubleshooting and Diagnostics 59 Diagnostics 59 Table 8 1 Aco...

Страница 5: ...LEFM 3xxCi User Manual IB1406 Rev 12 Table of Contents Page iii August 2017 Transducer Equipment 68 Electronic Equipment 68 Installation Equipment Optional 68 ...

Страница 6: ...al Safety OPERATORS SHOULD NOT REQUIRE ACCESS TO THE INTERIOR OF THE FLOWMETER ONLY QUALIFIED PERSONNEL SHOULD SERVICE THE LEFM 380Ci DO NOT ATTEMPT TO DISASSEMBLE THE INSTRUMENT OR OTHERWISE SERVICE THE INSTRUMENT UNLESS YOU ARE A TRAINED MAINTENANCE TECHNICIAN If the equipment is used in a manner not specified by the manufacturer the protection provided by the equipment s safety features may be ...

Страница 7: ...LEFM 3xxCi User Manual IB1406 Rev 12 Important Safety Information Page 2 August 2017 ...

Страница 8: ...a Cameron s LEFMLink software The operation of this software is outside the scope of this manual See the LEFMLink User Manual for details The LEFM 3xxCi flowmeter has two basic components or subsystems A meter body including up to eight pairs of transducers forming acoustic paths and a temperature sensor A transmitter s containing a readout display and acoustic data processing electronics The mete...

Страница 9: ...al between the transmitter and the meter body Refer to Figure 1 1 below for a depiction of the meter body and transmitter assembly Model 380Ci R Transmitter mounted remotely from the meter body refer to Section 1 for installation This model has a factory installed seal between the transmitter and a junction box for terminating cables from the meter body The 380Ci R model requires that the transmit...

Страница 10: ...rm indication fault detection and acoustic diagnostic information The transmitter performs all control and timing for the generation and measurement of acoustic pulses Acoustic processing is performed by specialized proprietary boards that are designed to achieve high sampling rates provide stable ultrasonic signals and eliminate zero drift The circuit boards within the transmitter are programmed ...

Страница 11: ...0 114 000 63 3 230 2230 10 250 180 000 40 5 090 1416 12 300 254 000 28 3 7 200 1000 14 350 307 000 23 5 8690 829 16 400 402 000 17 9 11 400 632 18 450 511 000 14 1 14 500 498 20 500 632 000 11 4 17 900 402 24 600 913 000 7 9 25 900 278 26 650 1 203 000 6 0 34 100 210 28 700 1 405 000 5 1 39 800 180 30 750 1 623 000 4 4 46 000 160 32 800 1 857 000 3 9 52 600 140 34 850 2 106 000 3 4 59 600 120 36 9...

Страница 12: ... FOR HASTELLOY F IF FOR INCONEL FORGED G ASME FLANGE RATING CLASS 150 300 600 900 1500 2500 H B FOR MANIFOLDS INTEGRAL WITH METER BODY H D FOR SPLIT MANIFOLDS INTEGRAL WITH METER BODY H E FOR SINGLE TRANSDUCER ENCLOSURES INTEGRAL WITH METER BODY J W FOR WELD NECK RAISED FACE FLANGES J R FOR WELD NECK RTJ FACE FLANGES J O FOR OTHER FLANGE VARIETY J S FOR SLIP ON FLANGES K L FOR LOCTITE E40 EXP POTT...

Страница 13: ...E RS 485 PORTS ONE MASTER AND ONE FIBER ETHERNET POWER OPTIONS P D FOR DC POWER 24 VOLTS P A FOR AC POWER 120 230 VAC SUNSHIELD OPTIONS S Y FOR WITH SUNSHIELD S N FOR WITHOUT SUNSHIELD ENTRY PORT E 1 FOR NPT PORTS 3 4 INCH NPT E 2 FOR M25 PORTS E 3 FOR SPECIAL APPROVALS X 0 FOR NO CSA APPROVAL X C FOR CSA APPROVAL Y 0 FOR NO ATEX APPROVAL Y B FOR ATEX EXd IIB APPROVAL Y C FOR ATEX EXd IIB H2 APPRO...

Страница 14: ...W Power Requirements AC Power Voltages 120 60 Hz 230 50 Hz VAC Voltage Range 108 VAC to 253 VAC Frequency Range 47 Hz to 63 Hz Current Draw 0 14 A Power Consumption 7 3 W Pulse Outputs Pulse Direction Outputs 4 Total 0 5 V or 0 12 V Alarm Status 4 Total 5V or 12 V normal operation 0V alarm condition Communications RS485 up to 3 total 2 Wire Modbus RTU Ethernet Copper or Fiber HART Optional Analog ...

Страница 15: ... 85 C Operating Temperature 58 F 50 C to 158 F 70 C Altitude Up to 5000 meters 16400 feet for DC applications 2000 meters for AC applications Contact Cameron for applications at higher elevations This transmitter is intended for use in a permanently connected installation Equipment Class II Pollution Degree 2 Continuous operation ...

Страница 16: ...ote mount installation method in which the transmitter is mounted separately from the flowmeter typically due to extreme environmental reasons for example high or low pipe temperatures Remote mounting of the electronics is for Model 380Ci R Flowmeter Body Installation Best Practices The weights of the flowmeter body are listed in Table 1 3 and Table 1 4 Never use the transmitter conduit or junctio...

Страница 17: ...tag or by referencing Table 1 4 3 Place the meter on a stable surface or platform capable of supporting its assembled weight Failure to properly stabilize and support the meter body during installation or removal could allow the meter to shift or roll posing a hazard that may result in equipment damage or serious injury up to and including death 4 Remove the plug bolts and sealing washers from the...

Страница 18: ...the meter Failure to take this precaution may result in damage to equipment and or personal injury up to and including death Failure to properly stabilize and support the meter body during installation or removal could allow the meter to shift or roll posing a hazard that may result in equipment damage or serious injury up to and including death NEVER attempt to thread one sling through both hoist...

Страница 19: ...en so that lifting method does not interfere with the electronics unit 4 To avoid damaging the transmitter enclosure ensure that the slings do not come into contact with it Consider using a spreader bar as shown in Figure 2 3 in order to ensure that the angle between the slings does not exceed 90 degrees Figure 2 3 Hoist rings used at 0 with a lifting bar above the electronics unit allow for unifo...

Страница 20: ...ents of IEC 60947 1 and IEC 60947 3 and site electrical codes If using DC power power cable must be installed in separate conduit from all other cabling This is to meet requirements of IEC 61000 4 4 2004 07 380Ci Installations Upstream of the meter there should be at least 5 diameters of straight pipe of the same nominal diameter as the meter If a straightening conditioning element is used 10 diam...

Страница 21: ...LEFM 3xxCi User Manual IB1406 Rev 12 Section 2 Page 16 August 2017 Figure 2 4 Best Practice for 380Ci Installation Note For the 340Ci Installation the Upstream pipe length should be 10D 5D max 2D min ...

Страница 22: ...hr Qmin m3 hr 4 100 28 700 34 440 2 870 574 813 975 81 16 6 150 65 200 78 240 6 520 1 304 1 850 2 216 185 37 8 200 114 000 136 800 11 400 2 280 3 230 3 874 323 65 10 250 180 000 216 000 18 000 3 600 5 100 6 116 510 102 12 300 254 000 304 800 25 400 5 080 7 190 8 631 719 144 14 350 307 000 368 400 30 700 6 140 8 690 10 432 869 174 16 400 402 000 482 400 40 200 8 040 11 400 13 660 1 138 228 18 450 5...

Страница 23: ...ow conditioner and 3 diameters downstream are suitable for accuracy class 1 0 in piping arrangements that cause severe disturbances including combinations of out of plane bends in combination with partial blockage of the pipe An example of a severe disturbance would be a 50 open gate valve installed between out of plane bends Inlet piping configuration No 4 15D with flow conditioner o Measuring in...

Страница 24: ...ends in combination with partial blockage of the pipe An example of a severe disturbance would be a 50 open gate valve installed between out of plane bends For all above configurations the internal diameter of the pipe sections must be the same as the inlet and outlet diameter of the meter The pipe sections shall be considered identical if their diameters differ by no more than 3 For unidirectiona...

Страница 25: ...eing adversely affected thus ensuring that the hazardous location protection is not compromised Note All wiring between the transmitter and the meter body must be routed through grounded metal conduit or equivalent All wiring to the transmitter is to be routed in shielded conduit that meets site environment specifications This section describes the installation procedure for installing the transmi...

Страница 26: ... field terminations The transmitter and its junction box must be mounted according to site seismic rules guidelines There is a pole mounting hardware kit as an option for remote mounting the transmitter Remote Mount Terminations Procedure External Junction Box Only The terminations discussed in this section are within the junction boxes associated with the meter body and transmitter For all other ...

Страница 27: ...ed junction box and the transmitter If ATEX approved glands are to be used they shall be types that include compound filled seals around individual cores Refer to EN 60079 14 clause 10 4 2 2 Route the transducer and RTD cable s from the meter body junction boxes through the hazardous area cable conduit to the transmitter junction box bottom entry port and make termination connections according to ...

Страница 28: ...5 2 UP 6 4 3 UP 7 1A Upstream JBOX TB1 5 SHIELD 8 3 UP 9 6 4 UP 10 1A Upstream JBOX TB1 7 SHIELD 11 4 UP 12 8 5 UP TB3 1 2A Upstream JBOX TB1 1 SHIELD 2 5 UP 3 2 6 UP 4 2A Upstream JBOX TB1 3 SHIELD 5 6 UP 6 4 7 UP 7 2A Upstream JBOX TB1 5 SHIELD 8 7 UP 9 6 8 UP 10 2A Upstream JBOX TB1 7 SHIELD 11 8 UP 12 8 1 DN TB2 1 1B Upstream JBOX TB1 1 SHIELD 2 1 DN 3 2 2 DN 4 1B Upstream JBOX TB1 3 SHIELD 5 ...

Страница 29: ...al Pin Device Pin 6 DN 6 4 7 DN 7 2B Upstream JBOX TB1 5 SHIELD 8 7 DN 9 6 8 DN 10 2B Upstream JBOX TB1 7 SHIELD 11 8 DN 12 8 To validate a meter s installation perform the procedures in Section 4 Meter Installation Check Out For troubleshooting information see Section 8 Troubleshooting and Diagnostics Figure 3 2 Locations of Terminals on Electronics MXR Board ...

Страница 30: ...the shade will increase the life of all components 1 Uncrate the transmitter note the unpacked weight of the transmitter as listed in Table 1 2 for proper handling 2 Consider site seismic requirements 3 Determine the orientation that will best accommodate connections to the meter body as well as the transmitter display view angle 4 Use the indicated mounting points for mounting the units Use inch ...

Страница 31: ...etal conduit or equivalent that meets site environment specifications All power connections from site shall go through a properly rated equipment switch or circuit breaker employed as a disconnecting device see Section 1 Table 1 2 for ratings This switch shall be easily accessed for and be marked as the disconnecting switch for the transmitter This switch shall meet the requirements of IEC 60947 1...

Страница 32: ... must have plugs installed to be wrench tight with at least 5 threads fully engaged for a inch NPT connection or 8 threads for an M20 connection If ATEX approved glands are to be used they shall be types that include compound filled seals around individual cores Refer to EN 60079 14 clause 10 4 2 The wires should then be routed so that the terminations can be made The terminations are made under t...

Страница 33: ...lock 1 Recommended 16 to 20 AWG wire2 TB1 contains the power terminations described below in Figure 4 3 and Figure 4 4 Table 4 1 Power Terminations The schematics for the power terminations are shown below in Figure 4 3 and Figure 4 4 Figure 4 3 DC Power Terminations 2 14 AWG is allowable DC Power TB1 Pin 1 24 VDC TB1 Pin 2 RETURN AC Power TB1 Pin 1 120 230 VAC TB1 Pin 2 RETURN Fiber Port Fiber mo...

Страница 34: ...oming power supply Inputs outputs within a user group have a common isolated ground Accordingly all inputs outputs will be listed according to the user group Analog Inputs Terminal Block 2 Recommended 16 to 28 AWG wire TB2 contains the transmitter s analog inputs described below in Table 4 2 A typical schematic for the analog inputs including a depiction of the terminal block 2 configurations is s...

Страница 35: ... 3 A typical schematic for the analog outputs including a depiction of the terminal block 2 configuration is shown below in Error Reference source not found 7 Note that HART bus connections are made to the Analog Output 2 terminals Hart does not interfere with the analog function Table 4 4 Optional HART Output HART TB2 Pin 25 4 to 20 mA TB2 Pin 26 4 to 20 mA TB2 Pin 27 Ground Digital Outputs Termi...

Страница 36: ...se A by 90 degrees reverse flow Pulse B Volume Direction Pulse B precedes Pulse A by 90 degrees reverse flow 0V forward flow TB2 Pin 13 TB2 Pin 29 Pulse A precedes Pulse B by 90 degrees forward flow V reverse flow Status A 0V alarm condition TB2 Pin 14 TB2 Pin 30 V normal operation Status B 0V alarm condition TB2 Pin 15 TB2 Pin 31 V normal operation Note Pulse A can be dedicated to positive flow o...

Страница 37: ...ote mount and on the outside of the enclosure There are grounding points on the inside and outside of the transmitter enclosure Refer to Figure 4 9 for the location of the external earth point For ATEX applications both earth points should be used Follow all other site guidelines regarding grounding earthing Figure 4 9 Earth Points Transmitter Body Refer to Table 4 for isolated ground connections ...

Страница 38: ...hassis earth this defeats the isolation the electronics provide Generally User 1 and User 2 grounds are not connected to each other These grounds are intended for separate users These isolated grounds should be connected as appropriate to the ground where the signals are going Communications The LEFM transmitter supports remote data communications via its three serial communications ports and Ethe...

Страница 39: ...e provided in Table 4 A typical schematic showing the serial communications is shown below in Figure 4 Table 4 7 Terminations for Serial Communications Port Name Termination User COM1 TB2 Pin 1 Transmit Receive 1 TB2 Pin 2 Transmit Receive 1 COM2 TB2 Pin 17 Transmit Receive 2 TB2 Pin 18 Transmit Receive 2 COM3 Not available with optional HART TB2 Pin 19 Transmit Receive 1 TB2 Pin 20 Transmit Recei...

Страница 40: ...he display is working 3 Verify Modbus communications are operational Use LEFMLink software to test Modbus communications on the RS 485 connection or the Ethernet connection 4 Verify meter operation according to Section 6 Operations 5 Use LEFMLink software to force outputs current and pulses Verify forced outputs are within 0 1 on current and within 0 01 on pulse frequency For more information on f...

Страница 41: ...th The transit time is shorter for pulses that travel downstream with the flow than for pulses that travel upstream against the flow P f P V C D T P f P V C U T where TD downstream transit time TU upstream transit time ℓp path length Cf velocity of sound in fluid Vp flow velocity along the ultrasonic path V flow velocity along the pipe axis Figure 5 1 Flow Velocities along the Ultrasonic Path and ...

Страница 42: ... Acoustical Path Configuration During manufacturing precision measurements of inside diameter ID path lengths and path angles are taken and inserted into the equation for volume flow rate For maximum accuracy the LEFM 3xxCi automatically compensates for pipe thermal expansion and contraction Gross Flow Rate to Net Flow Rate Conversion Hydrocarbon Gas The calculation of volumetric flow rate and tot...

Страница 43: ...er is in a RUN mode will illuminate and the display will show readouts of flow total flow rate fluid properties and basic acoustic diagnostic information If more detailed diagnostic data is needed beyond what is available via the display consider accessing transmitter diagnostic data via the LEFMLink software Except when troubleshooting do not remove the enclosure covers from the transmitter The d...

Страница 44: ...isplays As the user touches the IR sensor the display will move to the next display Refer to Figure 6 1 for a typical display sequence If the user stops interacting with the IR sensor the current screen will remain on the display for 2 minutes nominal The display will revert back to the main screen display 1 after 2 minutes Main screen Display 1 Display 2 Display 3 Display 4 Display 5 Display 12 o...

Страница 45: ...mputed by each path 3 The transmitter confirms the velocity profile parameters The parameters are FR Flatness Ratio Swirl Plane Balance relative results of the two planes of the flowmeter and AR Asymmetry Ratio or the balance between the top of the meter and the bottom of the meter The transmitter outputs the current status via the Ethernet port serial port and digital outputs The displayed status...

Страница 46: ...e 6 4 Display 3 Alarm Summary Kfactor for the meter shown Also alarms that require user acknowledgement are shown These alarms include EXE_CKSUM Executable checksum CFG_CKSUM Configuration checksum NVRAM Nonvolatile memory error WD_RESET Watch dog reset OSCTEST Clock accuracy test failure PFThresh Meter performance failure MBTemp Meter body temperature out of range ...

Страница 47: ...coustic Path Data Two screens first for paths 1 through 4 and the second for paths 5 through 8 Figure 6 5 Display 4 Acoustic Path Data Display 5 Acoustic Path Data Two screens first for paths 1 through 4 and the second for paths 5 through 8 Figure 6 6 Display 5 Acoustic Path Data ...

Страница 48: ...llowing codes described in the LEFM Modbus manual are used to indicate the status of each ultrasonic path Normal Path is operating normally Reject Path is rejecting data due to low signal to noise ratio irregular statistics or failing cross correlation tests VOS Path sound velocities are inconsistent with thresholds typically a spread of 0 15 or less between paths is acceptable VOT Path velocity i...

Страница 49: ...isplay 7 Analog Inputs Display 8 Software Information Figure 6 9 Display 8 Software Information Software version example is SW00070 Revision example is 01 01 01 Executable checksum example is 2F20ABEC Configuration check sum example is 7467 Analog Input Measured Channels States are OK or OOR out of range ...

Страница 50: ...ansmitter or the meter body manifold when the instrument is energized Before inspecting components open the power supply circuit breaker Failure to do so may result in electrical shock and or an explosion The following procedure covers the inspection of the transmitters transducers and metering sections Enclosure Inspection perform bi annually or according to site guidelines Perform the following ...

Страница 51: ...gized Before inspecting components open the power supply circuit breaker Failure to do so may result in electrical shock and or an explosion Wear an ESD protective wrist strap to avoid damaging any components 1 With the unit energized verify that power is being supplied to the meter and that the meter is operating 2 When the flowmeter is operating normally the LEDs LED 1 2 should be illuminated Al...

Страница 52: ...ses three basic subassemblies Refer to Table 7 1 for a description of each subassembly s components Table 7 1 Circuit Boards Circuit Board Name Description Function Input output and Power Supply IOP Provides galvanically isolated digital outputs analog output input and communications Converts 24 VDC power to internal voltages which are passed to the CTC MXR to power the electronics Provides fused ...

Страница 53: ... enclosure Use proper grounding straps on personnel before handling any circuit boards 2 Remove all user terminations or terminal blocks such that the board can be fully accessed See Section 7 5 for removal reinstallation of the enclosure s front cover For later models there is a metrological seal that connects the IOP to the CTC plastic wire This wire must be cut to remove the IOP 3 Viewed from t...

Страница 54: ...Option Only use Littelfuse Series part number 37412000430 2 amp rating as a replacement fuse Skip to step 8 7 Remove the new IOP from its packaging Place the old IOP into this packaging for proper storage 8 Align the IOP with card guides Slide the IOP down the guides until it engages the connector of the CTC Firmly push the IOP so that the connector seats DO NOT FORCE Again see Section 7 5 for rem...

Страница 55: ...hazardous area The transmitter has a real time clock that has battery backup It is recommended to replace the complete circuit board if the battery ever fails Do not replace the battery alone It must be replaced with the identical battery and it must never be changed in a hazardous location area The CTC and Display assembly consists of two component boards The individual component boards are not d...

Страница 56: ...lace the old CTC into this packaging for proper storage 5 Connect the ribbon cable to the back of the CTC card Gently press the CTC assembly onto the IOP connector Refer to Figure 7 5 below for a view of the routing path For newer versions of the IOP see previous section there may be a metrological seal wire plastic to be reinstalled to reconnecting the IOP to the CTC Ensure the ribbon cable is ro...

Страница 57: ...en the transmitter when the instrument is energized Before inspecting components open the power supply circuit breaker Failure to do so may result in electrical shock and or an explosion if in a hazardous area If any component on the MXR assembly fails the entire assembly is to be replaced To replace the MXR perform the following steps referring to Figure 7 6 for hardware locations Phase 1 Disconn...

Страница 58: ...andling any circuit boards 2 Loosen the transducer wires connector flanges two connectors and disconnect both connectors Push the transducer wires connectors to the side so that the MXR can be removed Remove ribbon cable from P1 connector 3 Remove the MXR board fasteners qty 4 Grasp the edges of the MXR and gently pull to lift it from the enclosure 4 Remove the new MXR from its packaging Place the...

Страница 59: ...f the enclosure back on with at least 8 full turns of the enclosure Once fully threaded on reinstall the setscrews Turn the enclosure to face the proper direction and tighten the setscrews Note the setscrews can only fully tighten if the enclosure has been threaded to the bottom range of its threads Phase 3 Reconnecting the Ribbon Cable to the CTC Follow Section 7 5 CTC and Display Replacement ste...

Страница 60: ...to do so may result in electrical shock and or an explosion Manifold O rings should NOT be installed or replaced without appropriate guidance from Cameron Should a transducer fail install a replacement using the following procedure referring to Figure 7 7 and Figure 7 8 for hardware locations and descriptions Figure 7 7 Transducer Replacement Manifold Style Meter Figure 7 8 Transducer Replacement ...

Страница 61: ...a new seal should also be installed 2 For manifold style meters disconnect the transducer leads from the transformer terminal block If necessary remove the transformer circuit board shown below in Figure 7 9 Figure 7 9 Transformer Circuit Boards Remove the compression plug retaining the transducer by pushing in and turning clockwise to release pliers might be helpful to get a grip on the knurled h...

Страница 62: ...ssurized and use two locking rings to keep the housing in place Specialized tools and trained personnel are required to remove the housing Figure 7 12 Transducer Housings 3 Remove the transducer internals by a steady pull on the transducer wires 4 Verify the transducer housing is clean and free from dirt 5 Re install the transducer internals as follows referring to Figure 7 13 a Route the wires of...

Страница 63: ...see the LEFMLink manual for instructions Failed inputs result in readouts at their lowest range For example a 4 20 mA pressure input scaled to 0 1000 psig will go to 0 psig if the input is removed 7 9Analog Output and Pulse Output Verification The digital output channels consist of an analog output and a pulse output The current output channel has a 0 20 mA range The pulse output has a range of 0 ...

Страница 64: ...smitter via Modbus Note Modbus registers can be edited to change the configuration of many LEFM parameters However these instructions are outside the scope of this manual Throughout this section values such as path SNR Signal to Noise Ratio Gain etc are discussed in reference to the LEFMLink Software Modbus register addresses will not be addressed The following screen capture depicts the interface...

Страница 65: ...on If an ultrasonic path rejects data continuously the LEFM will alert the operator with an ALARM status and an error code 2 The processor outputs the individual path status codes through a digital output and Modbus LEFMLink software interprets these codes and displays a text message The individual path status codes are Path operating normally Invalid or Pre Valid the processor is still searching ...

Страница 66: ...6 Review the gains for each acoustic path both upstream and downstream The gains are typically between 20 dB and 70 dB Gain is dependent on pressure composition velocity and temperature It will vary as conditions change Upstream and downstream gain should nominally be within 12 dB of each other 7 Review the performance data for each path The percent accepted data should be between 95 and 100 Remem...

Страница 67: ...ould the processor in the transmitter fail and require replacement the transmitter must be reprogrammed with the appropriate configuration file using Caldon s LEFMLink software for PC The procedure is as follows 1 Download the LEFMLink User Manual from Cameron s Measurement Systems website for reference 2 Connect the serial interface cable between a COM port on the PC and the transmitter 3 Select ...

Страница 68: ...ows for seals to control programming the transmitter or altering the meter body To ensure control of the electronics programming a switch on the front of the transmitter can be engaged preventing configuration changes The transmitter with cover removed is shown in Figure 9 1 below If the electronics switch SW1 4 is configured to the left closed the electronics cannot be reprogrammed irrespective o...

Страница 69: ...64 February 2017 Figure 9 2 shows the seal wire on the transmitter wire goes from the front cover to the main body A properly installed wire seal prevents undetected entry into the transmitter Figure 9 2 Front Lid only Seal Wire on Transmitter Enclosure ...

Страница 70: ...hown for clarity The front lid seal and lid must both be removed to in order to access this seal Figure 9 3 IOP Tamper Evident Seals The meter body has a seal wire on the fasteners for the manifold cover or on the transducer cover The seal wire allows the meter owner to verify if there has been any tampering with the meter body Refer to Figure 9 4 or Figure 9 5 Figure 9 4 Seal Wire on Meter Body ...

Страница 71: ...06 Rev 12 Section 9 Page 66 February 2017 Figure 9 5 Seal Wire on Meter Body The remote mount configuration shown in Figure 9 6 has seal wires for all the junction boxes used in the system Figure 9 6 Seal Wires for Junction Boxes ...

Страница 72: ...ications All transducer housings have been designed and built with 2 sets of seals The first and primary seal set retains the process gas If the first seal set were to fail the secondary seal exists to prevent gas from entering into the electrical compartments and to redirect that gas out through a vent For meters built to comply with ISA 12 27 01 a special vent has been designed to vent gas if al...

Страница 73: ...rder spares with your meter s model code or serial number Cameron can then send the correct group number to your site Qty 1 Display Board 9A 203B511G01 Qty 1 CTC Board 9A 203B502G0x Qty 1 IOP Board 9A 203B508G0x Qty 1 MXR Board 9A 203B505G0x Installation Equipment Optional Qty 2 Hoist Rings See Section 2 for part numbers Note The printed circuit boards contain electrolytic capacitors To ensure pro...

Страница 74: ...eller s liability and Buyer s exclusive remedy in any case of action whether in contract tort breach of warranty or otherwise arising out of the sale or use of any products software supplies or materials is expressly limited to the replacement of such products software supplies or materials on their return to Seller or at Seller s option to the allowance to the customer of credit for the cost of s...

Страница 75: ...LEFM 3xxCi User Manual IB1406 Rev 12 Page 70 August 2017 ...

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