Befaco BCMF3100 User manual
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BCMF3100 Coriolis Mass Flow Meter
Operating Manual
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Content
1 BCMF Mass Flow Meter Overview ...................................................................................................................... 5
1.1 Main Features .............................................................................................................................................. 5
1.2 Application .................................................................................................................................................... 5
1.3 Working Principle ......................................................................................................................................... 6
2 Sensor Parameters ................................................................................................................................................ 7
2.1 Sensor Structure .......................................................................................................................................... 7
2.2 Technical Parameters ................................................................................................................................. 8
2.3 Sensor Dimension ....................................................................................................................................... 9
3 Selection and Installation.....................................................................................................................................12
3.1 Selection .....................................................................................................................................................12
3.2 Installation ..................................................................................................................................................13
3.2.1 Basic Requirements on installation .............................................................................................13
3.2.2 Installation Direction ......................................................................................................................13
4. Transmitter ............................................................................................................................................................15
4.1 Working conditions ....................................................................................................................................15
4.2 Using area and Explosion ........................................................................................................................15
4.3 Installation ..................................................................................................................................................15
4.4 Terminal and Wiring ..................................................................................................................................16
4.5 Cable Connection ......................................................................................................................................17
4.6 Software operating procedure .................................................................................................................18
4.7 Panel and Button .......................................................................................................................................19
4.7.1 Button function ................................................................................................................................19
4.8 Lock and unlock .........................................................................................................................................21
4.8.1 Lock ..................................................................................................................................................21
4.8.2 Unlock ..............................................................................................................................................21
4.9 System menu setting structure ................................................................................................................21
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4.9.1 Enter menu ......................................................................................................................................21
4.9.2 Selection function ...........................................................................................................................22
4.10 BASICS menu structure .........................................................................................................................22
4.11 Factory setting menu structure ..............................................................................................................23
4.12 Display setting .........................................................................................................................................25
4.12.1 DISP #1 setting ............................................................................................................................25
4.12.2 DISP #2 setting ............................................................................................................................26
4.12.3 DIGITS ...........................................................................................................................................26
4.12.4 CONSTRAST ...............................................................................................................................26
4.12.5 BK LIGHT ......................................................................................................................................26
4.12.6 LANGUAGE ..................................................................................................................................26
4.13 Measurement setting ..............................................................................................................................26
4.13.1 DAMP TIME ..................................................................................................................................26
4.13.2 Small signal cutoff ........................................................................................................................27
4.13.3 INPUT DENS ................................................................................................................................27
4.13.4 FLOW DIR .....................................................................................................................................28
4.14 4~20mA OUT ...........................................................................................................................................29
4.14.1 4~20mA OUT setting ...................................................................................................................29
4.14.2 4~20mA MAXVAL and 4~20mA MINVAL .................................................................................30
4.15 FREQ OUT ...............................................................................................................................................30
4.15.1 FREQ OUTPUT ...........................................................................................................................30
4.15.2 FREQ MAXVAL ............................................................................................................................30
4.15.3 FREQ MINVAL .............................................................................................................................30
4.15.4 MAX OUT FREQ ..........................................................................................................................31
4.16 RESET ......................................................................................................................................................31
4.17 ZERO CAL ...............................................................................................................................................31
4.17.1 Preparatory condition ..................................................................................................................31
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4.17.2 Zero adjustment setting ..............................................................................................................31
4.17.3 Troubleshooting for ZERO CAL .................................................................................................31
4.18 COMM .......................................................................................................................................................32
4.18.1 COMM selection ...........................................................................................................................32
4.18.2 RS485 ............................................................................................................................................32
4.19 RECALL MEMO ......................................................................................................................................32
4.20 Device status and output test ................................................................................................................32
4.20.1 DEV.INFO ......................................................................................................................................32
4.20.2 DEBUG ..........................................................................................................................................33
4.21 ADVANCED menu ...................................................................................................................................34
4.21.1 Flow K ............................................................................................................................................34
4.21.2 CAL TEMP ....................................................................................................................................34
4.21.3 M.FLOW MAX/MIN ......................................................................................................................34
4.21.4 V.FLOW MAX/MIN .......................................................................................................................34
4.21.5 TEMP Ct ........................................................................................................................................34
4.21.6 BASIC FQ .....................................................................................................................................35
4.21.7 DENSITY D1 .................................................................................................................................35
4.21.8 DENSITY D2~D7 .........................................................................................................................35
4.21.9 DENSITY Dt ..................................................................................................................................35
4.21.10 SET MEMORY ...........................................................................................................................35
4.21.11 ADVANCED SETTING ..............................................................................................................35
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1 BCMF Mass Flow Meter Overview
Befa coriolis mass flow meter (BCMF) is a new type flow meter which is designed according to Micro Motion and Coriolis
principle. This kind of new flow meter can measure the fluid directly in a sealed pipeline. It consists of two sections: Sensor
and Signal Transmitter.
1.1 Main Features
Unchallengeable BCMF performance on liquid mass flow, volume flow, and density measurement
Unique design delivers unparalleled measurement sensitivity and stability
Guarantees consistent, reliable performance over the widest flow range
Designed to minimize process, mounting, and environmental effect
1.2 Application
The BCMF mass flow meter can be used in the following fields to meet the requirements of ingredient, mixing processes
and commercial measurement.
Chemical: containing chemical reaction system
Petroleum: moisture content analysis
Lipids: including vegetable oils, animal fats and other oils
Pharmaceutical
Painting
Paper making
Textile printing and dyeing
Fuel: crude oil, heavy oil, coal slurry, lubricant and other fuels.
Food: gas dissolving beverage, health drink and other liquid.
Transportation: pipeline liquid measurement.
Low temperature fluid, like liquid oxygen and liquid nitrogen, the low temperature up to -200℃
High temperature fluid, the maximum temperature up to 300℃
High pressure fluid, like slurry flow measurement for oil drilling cementing
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1.3 Working Principle
If a pipe is rotated around a point (P) while liquid is flowing through it (toward or away from the center of rotation), that fluid
will generate an inertial force, with reference to Figure 1-1:
Figure 1-1
A particle (δm) travels to the right at a constant velocity (v) inside a tube. The tube is rotating around a fixed point (P) at
angular velocity (w), in this case, this particle will get two acceleration components:
1. Normal acceleration (centripetal acceleration), its value is equal to w2r, its direction is toward the point P
2. Tangential acceleration a1 (Coriolis acceleration), its value is equal to 2wv, its direction is perpendicular to v
The force generated by tangential acceleration is Coriolis force, its value is equal to Fc =2wvδm. In figure1.1 fluid
δm=ρA×ΔX, So Coriolis force can be expressed as:
ΔFc=2ωυ×δm=2ωυ×ρA×ΔX=2ω×δqm×ΔX
Wherein A is the duct cross-sectional area.
δqm=δdm/dt=υρA
For special rotational pipe, its frequency is constant, ΔFc only depends on δqm. Therefore, directly or indirectly measuring
the Coriolis force can be measured mass flow. This is how Coriolis mass flow meter works.
The actual flow sensor can’t achieve rotational movement, replace by pipeline vibration. The principle is shown in Figure1-
2、Figure1-3、Figure1-4. Both ends of a bend pipe are fixed, and the vibration force is applied to the pipe in an middle of
the two fixed points (according to the resonance frequency of pipeline), taking the fixed point as axis, making pipeline vibrate
at its natural frequency (w). When no fluid flows through the pipeline, the pipeline is only affected by vibration force, the
vibration direction of two half-section of pipeline is the same, no phase difference. When fluid flows, by the influence of fluid
medium dot Coriolis force Fc inside the pipeline (In the two half-section of pipeline, Coriolis F1 and F2 are equal in magnitude
and opposite in direction Figure 1-2), two half-section of pipeline occur twist in the opposite direction to generate phase
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difference which is proportional to mass flow. The design of sensor is converting the measurement of Coriolis force to the
measurement of phase difference for both sides of the vibrating tube. This is the working principle of Coriolis mass flow
meter.
2 Sensor Parameters
2.1 Sensor Structure
F1
F2
V
V
W
W
信号1
信号2
V
V
时间
Figure 1-2
Figure 1-3 Figure 1-4
Signal 2
Signal 1
Time
BCMF series mass flow meter sensor consists of measurement tube, driving
device, position detector, support structure, the temperature sensor, housing, etc.
① Supporting structure: the measuring tube fixed on the supporting structure
as the vibrating axis.
② The measuring tube (Vibrating tube): consist of two parallel tubes.
③ Position detector: used for the measurement of measuring tube distortion.
④ Drive device: generate electromagnetic force to drive measuring tube to
make it vibrate close to resonance frequency.
⑤ Housing: Protect the measuring tube, driving unit and detector.,
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2.2 Technical Parameters
Dimension and Measuring Range
Specification
DN
(mm)
Flow range(kg/h)
Zero Stability, kg/h
Rated
Pressure
(MPa)
NW
(kg)
GW
(kg)
0.2% 0.15% 0.1%
BCMF-003 3 0~96~144 0.018 0.012 0.012 40 8 19
BCMF-006 6 0~540~810 0.099 0.066 0.066 20 12 22
BCMF-008 8 0~960~1440 0.18 0.12 0.12 20 12 23
BCMF-010 10 0~1500~2250 0.27 0.18 0.18 20 11 24
BCMF-015 15 0~3000~4500 0.63 0.42 0.42 20 12 25
BCMF-020 20 0~6000~9000 1.17 0.78 0.78 16 20 34
BCMF-025 25 0~9600~14400 2.025 1.35 1.35 16 21 35
BCMF-032 32 0~18000~27000 3.6 2.4 2.4 16 27 45
BCMF-040 40 0~30000~45000 5.4 3.6 3.6 12 35 55
BCMF-050 50 0~48000~72000 9 6 6 12 40 60
BCMF-080 80 0~120000~180000 24 16 16 8 90 150
BCMF-100 100 0~192000~300000 40.5 27 27 8 170 245
BCMF-150 150 0~360000 90 60 60 6 255 350
Accuracy(Liquid) :( With FT-523 Transmitter)
Measurement accuracy: ±0.1% ±（zero stability/measurement value）%
Measurement accuracy: ±0.15% ±（zero stability/measurement value）%
Measurement accuracy: ±0.2% ±（zero stability/measurement value）%
Repeatability: 1/2 measurement accuracy %
Density(Liquid) measuring range and accuracy (With FT-523 transmitter)
Range: 0.3～3.000g/cm3 Accuracy: ±0.002g/cm3
Temperature measuring range and accuracy (With FT-523 transmitter):
Temperature measuring range: -200～200℃ Accuracy: ±1℃
Ambient temperature: －20℃～60℃
Material : The measuring tube SS316L Housing: SS304
Rated pressure: 0～4.0MPa (standard)
Explosion-proof level : Ex d ib IIC T6 Gb
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2.3 Sensor Dimension
“U” -type Integrated
Model A B C D NW(only sensor)
mm mm mm mm kg
BCMF-010 450 590 380 60 7.2
BCMF-015 456 590 380 60 7.5
BCMF-020 540 750 468 108 17
BCMF-025 540 770 468 108 17.5
BCMF-032 545 810 468 108 24
BCMF-040 600 930 500 140 32
BCMF-050 606 955 500 140 36
BCMF-080 866 1177 780 220 87.5
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BCMF-100 950 1335 833 273 165
BCMF-150 1300 1593 1144 324 252
BCMF-200 1300 1600 1144 400 350
“U” -type Remote type
Model A B C D NW(only sensor)
mm mm mm mm kg
BCMF-010 450 370 380 60 7.2
BCMF-015 456 370 380 60 7.5
BCMF-020 540 530 468 108 17
BCMF-025 540 550 468 108 17.5
BCMF-032 544 590 468 108 24
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BCMF-040 600 710 500 140 32
BCMF-050 606 735 500 140 36
BCMF-080 866 957 780 220 87.5
BCMF-100 950 1115 833 273 165
BCMF-150 1300 1373 1144 324 252
BCMF-200 1300 1380 1144 400 350
Triangle - Integrated type
Model
A B C D NW
mm mm mm mm kg
BCMF-003 178 420 250 54 4.8
BCMF-006 232 550 360 70.5 8.1
BCMF-008 232 565 395 70.5 8.2
BCMF-010 95 525 370 70.5 6.5
BCMF-015 95 540 405 70.5 6.5
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3 Selection and Installation
3.1 Selection
The following conditions should be considered for flow meter selection.
Medium characteristics Measurability
Coriolis mass flow meter is widely used for lots of fluid, but some conditions like slug flow,
pulsating flow etc, where you want to install Coriolis mass flow meter, some appropriate
support measures must be taken.
Corrosivity
Coriolis mass flow meter measuring tube material is SS316L, housing material SS304. If the
standard material is not suitable for the medium, anticorrosion wetted material should be
selected.
Operating temperature and pressure
Standard configuration: -50…+200℃, 4.0MPa, please contact with manufacturer for special
parameters.
Ambient condition
Standard ambient temperature is -20…+60℃. The flow meter will fail to display if the ambient
temperature exceeds the standard range. Please contact with manufacturer for special
parameters.
Protection and Explosion
Transmitter ex-proof: flame type, Sensor ex-proof: intrinsic type
Transmitter and Sensor protection: IP67
Preferred measuring range 1/3~2/3 of standard flow range
Allowable pressure loss Pressure loss should be considered especially for reduced pipe.
Pressure loss reference table is shown as below
Figure 2-5 BCMF010 / 015
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3.2 Installation
3.2.1 Basic Requirements on installation
Flow direction should be in accordance with BCMF sensor flow arrow.
Properly supporting is required for preventing tubes vibrating.
If a strong pipeline vibration is inevitable, it is recommended to use a flexible tube to isolate the sensor from the pipe.
Flanges should be kept parallel and their center points should be located on the same axis to avoid subsidiary force
generation.
Installation vertically, make the flow from the bottom up when measuring, meanwhile, the meter should not be installed
on the top to prevent air getting trapped inside the tubes.
3.2.2 Installation Direction
In order to ensure the reliability of the measurement, the ways of installation should consider the following
factors;
The meter should be installed downward when
measuring liquid flow (Figure3-1), so that air
cannot get trapped inside the tubes.
The meter should be installed upward when
measuring gas flow (Figure3-2), so that liquid
cannot get trapped inside the tubes.
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The meter should be installed sideward when the medium is turbid liquid
(Figure3-3) to avoid particulate matter accumulated in the measuring
tube. The flow direction of medium goes from the bottom up through the
sensor.
3. 2.3 Sensor Fixed
Coriolis mass flowmeter is a vibrating instrument, when they work, the two
vibrating tube is always in a state of vibration. Therefore, external vibration
or pipeline vibration may have effect on their normal operation.
For small diameter coriolis mass flow meter, it is not easy to avoid vibration
because of the small measuring tube, in this case, we provide installation bracket which is used for fixed. Please make sure
that the installation bracket is installed on a stable interface. The installation diagram for small diameter is shown as Figure
3.4
Figure 3-2
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4. Transmitter
4.1 Working conditions
1) Atmospheric pressure: 86~106KPa
2) Ambient temperature: LCD display: -20~+60℃; No display:-40~+85℃
3) Relatively humidity: 35%~95%
4) Power supply: 22~245V
5) Power consumption: ≤15W
6) Communication interface:
4~20mA current loop (passive, error≤±0.005mA), Pulse 0~10KHz, RS485
4.2 Using area and Explosion
This flow meter meets the requirements of Ex d ib IIC T6 Gb in GB3836.1-2010、GB3836.2—2010、GB3836.4-2010, which
is suitable for Zone1, Zone2, Temperature class T6 of explosive atmospheres.
4.3 Installation
Installation Type Description
FT523 Integrated type
The signal cable between sensor and transmitter have been connected well before
delivery, the users only need to connect external wiring.
FT523 Remote type
Mounting bracket will be equipped for remote type.
Cable length for standard configuration is 2m
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Use air plug to connect transmitter and senor (air plug protection is IP67)
4.4 Terminal and Wiring
Table 4-4 show the name of terminals, Figure 4-4 show the wiring method, Current 2 have HART
The 1st line signal
terminals
Signal Descriptions
1 RS485+
2 RS485-
3 Current output 1+
4 Current output 1-
5 Current output 2+
6 Current output 2-
7 Frequency output +
8 Frequency output -
The 2nd line signal
terminals
Signal Descriptions
1 Power +
2 Power -
3 Shielding Grounding
Table 4-4 Wiring terminal definition
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Figure 4-4 Wiring method
4.5 Cable Connection
A special 9-core double shielded signal cable is used for connecting transmitter and sensor. To facilitate wiring, we provide
air-plug. Structure is shown as below
Figure 4-5 Cable between sensor and transmitter
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4.6 Software operating procedure
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4.7 Panel and Button
4.7.1 Button function
Figure 4-7-1 Button diagram
UP: move up the selection cursor
DOWN: move down the selection cursor
FUNC: function selection (main interface), confirm (setting interface)
ESC: exit the current menu
Note: The button is capacitive touch type, Use finger to touch the button to achieve the corresponding function.
4.7.2 Interface description
M
ass flow
M
ass flow
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Figure 4-7-2 Display interface diagram
DISP #1
Any one of the following six variables can be displayed: mass flow, volume flow, total mass, total volume, density,
temperature. User can set in “BASICS-＞DISP #1 menu”.
Keyboard lock logo
: the keyboard has been unlocked
: the keyboard has been locked
DISP #1 unit
User can set in “BASICS -＞DISP #1 menu”.
DISP #2
Any one of the following six variables can be displayed: mass flow, volume flow, total mass, total volume, density,
temperature. Also measurement value, unit and variable code of DISP #2 can be displayed. At the main interface, the
auxiliary display variable can be switched by UP and DOWN keys.
You can set the unit of DISP #2 in “BASICS -＞DISP #2 menu”.
Table 4-7-2 DISP #2 code
Mass flow Total mass Volume flow Total volume Density Temperature
Fm ∑m Fv ∑v D T
Keyboard status indicator lights
Green light is for unlocking and pressing keys
Red light is for locking or not pressing keys
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