Cameron LEFM 380Ci-R User manual

Manual No. IB1406 Rev. 12
CALDON ULTRASONICS
LEFM3xxCi Family of
Gas Ultrasonic Flowmeters with G3
Transmitter
User Manual

LEFM 3xxCi User Manual 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

LEFM 3xxCi User Manual IB1406 Rev 12
Table of Contents Page i August 2017
Table of Contents
Important Safety Information .........................................................................................................................1
Terms Used in this Manual........................................................................................................................1
Personal Safety.........................................................................................................................................1
........................................................................................................................................................3
Introduction...............................................................................................................................................3
Equipment Description..........................................................................................................................3
Table 1.1 Nominal K-Factors.....................................................................................................................6
Model Number......................................................................................................................................7
Flowmeter Specifications......................................................................................................................8
......................................................................................................................................................11
Direct-Mount Meter and Transmitter Installation (Model 3xxCi)...............................................................11
Flowmeter Body Installation – Best Practices.....................................................................................11
Table 2.1 HoistRing RatedWeights andPart Numbers .........................................................................13
Table 2.2 Flow Ranges forthe 3xxCi 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 BoxOnly)...............................................21
Table 3.1 LEFM 380Ci-R Transducer and RTD Terminations (See Figure 3.2)......................................23
Remote Mount TransmitterInstallation Procedure..............................................................................25
......................................................................................................................................................26
Transmitter Connections – All Models.....................................................................................................26
Transmitter Installation Procedure......................................................................................................26
Table 4.1 Power Terminations.................................................................................................................28
Table 4.2 Analog Inputs (User 1).............................................................................................................29
Table 4.3 Analog Outputs (User2)..........................................................................................................30
Table 4.4 Optional HART Output.............................................................................................................30
Table 4.5 LEFM 380Ci Digital Signals.....................................................................................................31
Table 4.6 Ground Connections................................................................................................................33
Table 4.7 Terminations for Serial Communications.................................................................................34
Meter Installation Check-Out...............................................................................................................35

LEFM 3xxCi User Manual IB1406 Rev 12
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......................................................................................................................................................36
Understanding Flow Calculations............................................................................................................36
Measuring Flow Velocities..................................................................................................................36
Measuring Flow Rate..........................................................................................................................37
......................................................................................................................................................38
Operations...............................................................................................................................................38
Definitions...........................................................................................................................................38
Normal Operating Conditions..............................................................................................................38
Table 6.1 LED Diagnostics......................................................................................................................38
Display................................................................................................................................................39
......................................................................................................................................................45
Maintenance............................................................................................................................................45
Introduction.........................................................................................................................................45
7.1 General Inspections – Preventative Maintenance Procedures................................................45
7.2 Transmitter 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 Acoustic Signal Diagnostics....................................................................................................60
......................................................................................................................................................63
LEFM 3xxCi and 3xxCi-R Metrological Seals..........................................................................................63
....................................................................................................................................................67
Secondary Seals and Seal Failure Indication..........................................................................................67
Secondary Seals.................................................................................................................................67
....................................................................................................................................................68
Recommended Spare Parts....................................................................................................................68

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Transducer Equipment........................................................................................................................68
Electronic Equipment..........................................................................................................................68
Installation Equipment (Optional)........................................................................................................68

LEFM 3xxCi User Manual IB1406 Rev 12
Important Safety Information Page 1 August 2017
Important Safety Information
Terms Used in this Manual
This symbol identifies information about practices or circumstances that can lead to personal
injury or death, property damage, or economic loss.
This symbol indicates actions or procedures which if not performed correctly may lead to personal
injury orincorrect function of the instrument or connected equipment.
Note – Indicates actions or procedures which may affect instrument operation or may
lead to an instrument response which is notplanned.
Personal 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 mannernot specified by the manufacturer, the protection provided by
the equipment’s safety features may be impaired. Cameron is not responsible for damages or
injuries sustained as a result of inappropriate use.
Before performing system verification and repairprocedures, contact the Valves & Measurement division,
Caldon Ultrasonics.
For additional information or assistance on the application, operation orservicing, call the Cameronoffice
nearest you or visit www.cameron.slb.com.
CAUTION
WARNING
CAUTION

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Important Safety Information Page 2 August 2017

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Section 1 Page 3 August 2017
Introduction
Equipment Description
The Caldon* LEFM 3xxCi1ultrasonic flowmeter is a highly sophisticated bidirectionalflow measurement
system that employs ultrasonic transit time to measure fluid velocity and volumetric flow rate.Its advanced
signal and data processing circuitry help ensure high accuracy and repeatability. The LEFM 3xxCi can be
configured to indicate direction of flow via either a quadraturepulse outputor a digital signal.It can also be
configured to output positive flow pulses on one channeland negative flow pulses on the other.
The LEFM 3xxCi also contains an automatic fault detection system for verifying performance and alerting
personnel whenabnormal operating conditions are detected. For ease of troubleshooting, the LEFM 3xxCi
provides easy-to-interpret diagnostic information via Modbus communications and the local display.
This manual provides detailed instructions on the installationand operation of the flowmeter to include the
viewing of flow parameters and interpretation of diagnostic data viewed via the transmitter’s display. Users
who require a moredetailedview of diagnostic acousticdata can accessthe data via 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 pairsof transducers forming acoustic pathsand a temperature
sensor
•A transmitter(s)containing a readoutdisplayand acoustic data processingelectronics
The meter body now has updated features that have been introduced in2013. These features complywith
the requirements of Measurement Canada (PS-G-06), OIML R-137, and ISO 17089-1:2010. They include:
•Removable manifold covers for easy access to the transducer components
•Ability to seal the transmitterand meter bodyto all changes affecting metrological performance
•Positive indication of the degradation inany primary seal with a secondary seal design that
complies with the requirements of ISA 12.27.01
The meterdesign typically mounts the transmitter to the meterbody at the factory and theassembly is
shipped asone instrument,ready for installation. Remote-mountunits are available,particularly when there
are extreme temperatures at the meter itself. This manual covers two different configurations. These are
described as follows:
1The term 3xxCi encompasses all versions of the gas ultrasonic flowmeters. Specifically, the 340Ci (4-path), and the 380Ci (8-
path) models are covered. Further, different meter body configurations are covered.

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Section 1 Page 4 August 2017
Model 34xCi: Transmitter mounted to the meterbody (refer to Section 2, Meter Body Installation,
for installation). This model has a factory installed seal between the transmitter and the meter
body.
Model 380Ci:Transmittermounted to the meter body(refer to Section 2, Direct-Mount Meter and
Transmitter Installation, for installation). This modelhas a factory installed seal between the
transmitter and the meterbody. Refer to Figure 1.1 below for a depiction of the meter body and
transmitter assembly.
Model 380Ci-R:Transmitter mounted remotely from the meterbody (refer toSection 1 for
installation). This modelhas a factory installed seal between the transmitterand a junction box for
terminating cables from the meter body.
The 380Ci-R model requires that the transmitter be mounted separately from the meterbody. In those
instances, the transmitter(s) andmeter bodyare shipped separately.
Figure 1.1 LEFM 380Ci Meter Body and Transmitter Assembly, shown with optional sunshield and swivel hoist rings

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Section 1 Page 5 August 2017
LEFM 3xxCi Meter Body
The meterbody containsup to eight pairs of acoustic transducers and a temperature sensor (RTD).
The meter body is a specially designed section ofpipe that contains pairs of transducer housings that are
positioned to provide acoustic paths ata 65° angleto the flowdirection. They are spaced in accordance
with theGaussian Method offlow integration. The transducers are installed inside these housings.
Each transducer module contains a piezoelectric crystal which transmits and receives acoustic energy in
the form of ultrasonic pulses (typically200 kHz). A distinguishing design feature is that the transducer
modules may be removed from their housings for maintenance while the meter body is in the pipeline
without affecting the pressure boundary (i.e. no special extraction tools required).
LEFM 3xxCi Transmitter
The transmitter houses the display, which shows the flow data, including flow rate, total flow volume, gas
properties, analog input data, alarm indication, fault detection, and acousticdiagnostic information.
The transmitter performs all control and timing for the generation and measurement of acoustic pulses.
Acoustic processing is performed byspecializedproprietary boardsthat are designed to achieve high
sampling rates, provide stable ultrasonic signals, and eliminate zero drift. The circuit boards withinthe
transmitter areprogrammed to perform the following functions:
•Step through the ultrasonic path cycles
•Providegain controlfor each ultrasonic path
•Compute flow
•Generate pulse outputs and analog outputs
The transmitteroffers the following inputs/outputs:
•Standard volume pulse output
•The K-factors used to configure transmitters at the factory are listed in Table 1.1. The user may
configure the K-factor as needed.
•Analog Inputs (up to 3)
oProduct temperature
oProduct pressure
•Analog Outputs (up to 2)
oFlow
oAny Modbus Register (See Modbus manual)
•Communications
oRS-485 ports (half duplex; up to 3) – Modbus RTU
oEthernetport (via Copperor Fiber) with Modbus TCPIP
oOptionalHART channel (operates on second analog output)
•Digital Outputs (4)
oStatus
oStandard volume pulse outputs
•The K-factors used for factory transmitter configuration are listed in Table 1.1 below.