BF80 Coriolis Mass Flowmeters

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March 2022

BF80 Coriolis Mass Flowmeters

BEST MEASUREMENT PERFORMANCE

■ Best measurement performance on liquid mass flow, and density measurements

■ First-in-class gas mass flow measurement

■ Excellent design to reduce installation cost and eliminate daily maintenance

BEST FIT- FOR- APPLICATION

■ Wide range of meter size from DN3 to DN200

■ Superior applications for hygienic, cryogenic, high pressure and high temperature

■ Broad range of I/O outputs and expansive communication protocols

Overview

l Direct mass flow measurement without the influences of density, viscosity, temperature and pressure

l The best flow solutions for high pressure and cryogenic applications

l Wide turndown of up to 50:1

l Modular transmitter design with more functional options

l Integrated sensor design with explosion-proof and anti-corrosion features

l The industrial process control requirements for high accurate mass flow measurement

l Ex certification

Principles

The Coriolis mass flowmeter is based on the principle of Coriolis effect. The flowmeter directly measures mass flow, density, and temperature and calculates volume flow, total flow, and fluid composition in real-time.

Mass flow measurement

As shown in the following two pictures, the two flow tubes are forced to oscillate and then produce sine waves by an external exciter. When no fluid flows through the tubes, the vibration of the tubes won’t produce a phase shift between them. When fluid flows through the tubes, the tubes will be twisted to produce a phase shift by the so called Coriolis forces. The mass flow rate is directly proportional to the phase shift of the waves.

No Flow Flow Through

Density measurement

The flow tubes are vibrated at their resonance frequency. The fluid mass changes inside the tubes will result in the corresponding changes in the tube resonance frequency. The frequency changes can be used to calculate the fluid density.

Temperature measurement

Process temperature is directly measured by the temperature sensor that is sticky on one of the two tubes. The measured temperatures can be used to compensate temperature influences on the material elasticity to improve the accuracy of all other measurements.

Applications

BF80 mass flowmeter is now being used to measure liquid, gas or slurry in the most complex and challenging environments. The flowmeter is widely applied in process measurement and custody transfer due to the advantages of short response time, high precision measurement, and less daily maintenance.

Fluid

Typical Application

Industry

l Liquid

l Gas

l Slurry

n Custody Transfer

n Reactor Feed Ratio

n Density Measurement

n Batch Control

u Chemicals u Pharmaceuticals

u Food & Beverages u Power Plant

u Machinery u Pulp & Paper

u Minerals & Ming u Water

u Oil & Gas u Waste Water

Example One: A BF80 mass flowmeter is installed in a truck-loading cryogenic system for batch operation.

Example Two: BF80 mass flowmeters are installed inside a chemical plant for the raw chemical material process measurement.

Example Three: A BF80 mass flowmeter is installed in a gas station for the fuel measurement.

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Specifications

Sensor Specifications

Accuracy	Liquid: ±0.10%, ±0.15%, ±0.20%, and ±0.50% Gas: ±0.50%, ±0.75%, and ±1.0%
Repeatability	±0.05%
Density Accuracy	±0.002g/cm3
Process Temperature	±1℃
Ambient Temperature	-40 to +55℃
Relative Humidity	≤95%, non-condensing
Process Fluid	Gas, liquid and slurry
Case Material	304
Flow Tube	316L, Hastelloy C276
Transmitter Housing	Cast aluminum alloy with epoxy polyurethane coatings

Transmitter Specifications

Power Supply	85 to 265VAC, 50/60Hz; 12 to 24VDC, ±5℅
Power Consumption	Typical 5 watts, Max. 10 watts
Signal Output	Analog: 4 to 20mA, Pulse/Frequency: 0 to 10kHz
Digital Communication	Modbus RTU over RS485 by default; HART communication as an option
Variables	Mass Flowrate, Volume Flowrate, Mass Total, Volume Total, Temperature, Density, Standard Flowrate, and Standard Total
Ambient Temperature	-40 to +55℃
Conduit Connection	*M201.5 by default, 1/2-inch NPT female as an option**

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Size and Flow

Nominal Line Size	Max Flowrate (kg/h)
DN3	110
DN6	1,200
DN15	3,000
DN20	7,200
DN25	12,000
DN40	32,000
DN50	60,000
DN80	180,000
DN100	300,000
DN150	600,000
DN200	1,200,000

Accuracy and Repeatability on Liquids and Slurries

Performance Specifications	Option 1	Option 2	Option3	Option 4
Mass Flow Accuracy	±0.10%	±0.15%	±0.20%	±0.50%
Mass Flow Repeatability	±0.05%	±0.075%	±0.1%	±0.25%
Density Accuracy	±0.002g/cm3
Density Repeatability	±0.001g/cm3
Temperature Accuracy	±1℃

Accuracy and repeatability on gases

Performance Specifications	Option 1	Option 2
Mass Flow Accuracy	±0.50%	±0.75%
Mass Flow Repeatability	±0.25%	±0.35%
Temperature Accuracy	±1℃
Temperature Repeatability	±0.2℃

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Zero Stability

Zero stability is defined as the flow rate that approaches to the low end of flow range where the

flowmeter accuracy begins to deviate from the normal accuracy ratings. The descriptions about the zero stability can be found in the next section. When the flowmeter operates at the low end of flow range, the accuracy begins to deviate from the normal accuracy rating. In this case, the meter accuracy can be calculated by: ±accuracy ± [(zero stability/flow rate)×100]%

Zero stability is usually measured in the laboratory and can be used to calculate the expected sensor accuracy. Under zero flow laboratory conditions, the average flowrate measured by the calibration system should be within the range defined by the sensor’s zero stability value (0 ± zero stability). Each sensor has a unique zero stability. By statistics, about 95% of the flowrate should be within the range of the zero stability.

Nominal Line Size	Zero Stability (kg/h)
DN3	0.01
DN6	0.03
DN15	0.09
DN20	0.23
DN25	0.23
DN40	0.70
DN50	0.93
DN80	2.92
DN100	9
DN150	15
DN200	25

Turndown The following one graph and one table show an example of the measurement characteristics under various flow conditions. As shown in the graph, when the turndown is greater than 20:1, the meter accuracy begins to devastated dramatically.

A. Accuracy, %

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B. Flowrate, % of nominal

The following table shows accuracy and pressure drop across flowrate for a typical 50A sensor:

Turndown from Nominal Flow Rate	20:1	15:1	10:1	1.5:1	1:1
Accuracy (±%)	0.14	0.10	0.10	0.10	0.10
Pressure Drop (MPa)	0.00	0.00	0.02	0.10	0.23

Density Performance (Liquid only）

Measurement Unit	g/cm3	kg/m3
Accuracy	±0.002	±1
Repeatability	±0.0005	±0.5
Measurement Range	0.2 to 3	200 to 3,000

Temperature Performance Sensors can be used in the temperature ranges shown in the temperature limit figures. When selecting transmitter options, temperature limit figures should be used as one of the general guides. If the application conditions are close to the shaded area, we recommend the customers to consult with our local Reliant Instruments representatives.

Note

l In all cases, the transmitter cannot be operated where the temperature is below –40°C or above +60°C. If a sensor is to be used where the temperature is out of the allowed range, the transmitter must be moved to the locations where the temperature is within the allowable range.

l Temperature limits may further be restricted by other hazardous conditions. Refer to the hazardous approval documentation for detailed information. The document is usually shipped with the sensor or can be downloaded at www.reliantinstruments.com

l The transmitter can be remotely mounted. The remote flowmeter allows the sensor case to be insulated without covering the meter or the sensor junction box. When insulating the sensor case at the elevated process temperatures (above +60°C), please ensure that the transmitter will not be enclosed in the insulation as this may lead to transmitter failure

Temperature Accuracy	All models	±1℃
Temperature Limits	All models	See the figures below

Common Mass Flowmeter

CNG Mass Flowmeter

Process Temp Limits

Common Mass Flowmeter

-196 to ＋280℃

CNG Mass Flowmeter

-30 to ＋80℃

Ambient Temp Limits

Storage

-50 to ＋65℃

Operation

-40 to ＋55℃

As shown in the following figure, a group of temperatures from T6 to T1 refers to the maximum process temperature in which the sensor operates at the ambient temperature of 45 ℃.

Process Pressure Ratings

Sensor maximum working pressure reflects the highest possible pressure rating for a given sensor. Process connection type and environmental and process fluid temperatures may reduce the maximum rating.

Nominal Line Size	Maximum Working Pressure (MPa)
Nominal Line Size	Common Models (MPa)	High Pressure Models (MPa)
DN3	4.0	25
DN6	4.0	25
DN15	4.0	25
DN20	4.0	25
DN25	4.0	25
DN40	4.0	25
DN50	4.0	25
DN80	4.0	25
DN100	4.0	25
DN150	4.0	25
DN200	4.0	25

Case Pressure Sensor cases can realize secondary pressure resistance and protection, so as to prevent serious accidents caused by dangerous fluid leakage to the external environment. Implement China’s GB/T 20801 code for pressure piping, industrial piping, and GB 50316 code for design of industrial metal piping, process piping code and other standards.

Nominal Line Size	Case Max Pressure (MPa)
DN3	3.1
DN6	3.1
DN15	2.9

DN20	2.5
DN25	2.1
DN40	2.0
DN50	1.8
DN80	1.5
DN100	1.3
DN150	1.1
DN200	1.0

Approval and Certification for the Hazardous Area

BF80 mass flowmeter has been granted the EX certificate from Test Centre of China Coal Research Institute (CCRITC) in early 2022. The details please find the followings:

Ex-mark	Ex d ia IIC T6 Gb
Ex Certificate No.	CCRI 21.1473X
Enclosure Rating	IP67

Dimensions

Unit: mm Error: ±2mm Flange Standard: DIN2635 PN40

TR Transmitter

Remote-mount Transmitter

Compact-mount Transmitter

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Ω-sharp Sensors, size from DN3 to DN40

Sensor	Size	Dimensions (mm)
Sensor	Size	A	B	C	D
Ω	DN3	161	319	235	160
Ω	DN6	161	319	235	160
Ω	DN15	188	339	293	162
Ω	DN20	199	401	301	101
Ω	DN25	210	539	448	203
Ω	DN40	262	636	576	227

U-sharp Sensors, Size from DN50 to DN200

Sensor	Size	Dimensions (mm)
Sensor	Size	A	B	C	D
U	DN50	552	711	506	20
U	DN80	731	893	653	278
U	DN100	755	1162	709	345
U	DN150	1020	1322	907	393
U	DN200	1200	1600	1000	420

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Little-bent Sensors, Size from DN15, DN25 and DN50

Sensor	Size	Dimensions (mm)
Sensor	Size	A	B	C
Little-bent	DN15	446	409	174
Little-bent	DN25	580	426	174
Little-bent	DN50	880	713	174

Meter Type

Remote Compact

Sensor Installation Sensor installation is crucial for the performance of a mass flowmeter. In general, the meter flow tube should be always filled with the process fluid to prevent other medias during the installation.

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CAUTION

l Ensure that sensor explosion-proof rating, enclosure rating, and process &

ambient temperature limits which are marked on the nameplate meet or exceed the application requirements;

l When a sensor installed horizontally or vertically, the fluid flow direction must be the same as the “Arrow” indicator on the sensor body;

l When flagpole installation is adopted, the fluid flow direction must be from bottom to top;

l The sensor must be mounted on a firm base plate or with flanges.

Typical installations recommended

Inverted Installation for Liquid

Upright Installation for Gas

l Upright installation is recommended if the process fluid is a liquid because the leftover process fluid can be easily vaporized. Upright installation prevents the accumulation of vapor or air in the sensor tubes

l Inverted installation is recommended if the process fluid is a liquid with entrained solids, or if the process fluid is a gas which may condense. Inverted installation prevents higher density media from accumulating in the flow tubes

l Flagpole installation is recommended if the process fluid is a slurry mixture, or if the pipe is to be purged with gas or steam. Flagpole installation is a compromised method for the slurry.

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Wiring

About the 9-wire shielded signal cable

For the remote mass flowmeter, it’s strongly required to use the dedicated 9-wire shielded signal cable to connect the sensor with the transmitter at the installation place. Before conduct the signal cable wiring, please fully understand the wiring terminals in the transmitter and in the Junction Box respectively.

Note

l Must use the dedicated 9-wire shielded cable for the signal wiring. This cable is provided by the manufacturer;

l Default length of this cable is 3m. The cable can be extended up to 100m.

Diagram of wiring terminals inside the transmitter

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Code

R+

R-

PE

L+

L-

Color

White

Yellow

Black

(Shield)

Gray

Purple

Description

Right Pickoff

Left Pickoff

Code

TPE

S2

S1

C1

DPE

D-

D+

Color

Black

(Shield)

Black

Green

Orange

Black

(Shield)

Red

Blue

Description

Temperature Sensor

Drive Coil

Wiring terminals diagram in the Junction Box

Code	L-	L+	R-	R+
Color	Purple	Gray	Yellow	White
Description	Left Pickoff		Right Pickoff

Code

D-

D+

TPE

S2

S1

C1

Color

Red

Blue

Black

(Shield)

Black

Green

Orange

Description

Drive Coil

Temperature Sensor

Ordering Information

Example: BF80 15A L 3 S M L TR 1 A 1 M - A C 1 NN NNN

Item	Code	Code Description
Flowmeter	BF80	BF80 Mass Flowmeter
Sensor (size + type)	XA	3A/6A/15A/20A/25A/40A/50A/80A/100A/150A/200A Please note: “A” type - Common type
	XB	15B/20B Please note: “B” type - Special type applied for measuring CNG
	XM	15M/25M/050M Please note: “M” type - Little bent type
Pressure Rating	L	4MPa
	M	25MPa
	T	Special pressure rating on request
Accuracy	1	±0.10%
	2	±0.15%
	3	±0.20%
	4	±0.50%
	5	±0.75%
Process Temperature	S	Normal temp: -70 ~ +160℃
	L	Ultra low temp: -200 ~ +60℃
	H	Ultra high temp: -40 ~ +300℃
Process Connection	M	Thread
	F	Flange：Please specify the flange standard
	N	No connection needed
	T	Special process connection on request
Flow-tube Material	L	316L Stainless Steel
	H	Haste-lolly C276
	T	Special material on request
Transmitter	TR	Round transmitter
Display	0	Without display
Display	1	With display: English display by default and other language display on request
Power Supply	A	85~250VAC
	D	24VDC
	T	Please specify if other power supply applied
Communication & Signal Output	1	Freq/Pulse + Modbus RS485
	2	4-20mA (Positive) + Freq/Pulse + Modbus RS485
	3	*24-20mA (Positive)+ Freq/Pulse + Modbus RS485**
	4	HART + Freq/Pulse + Modbus RS485
Conduit Connection	M	*M201.5 by default, with no gland**
	P	1/2-inch NPT female, with no gland
	N	ATEX / IECEx approved
	T	Other conduit connection on request
Separator	-	Flowmeter options follow up after this
Meter Type	A	Remote type: The default cable length is 3 meters and other length needs to specified.
Meter Type	B	Compact type

Ex Certificate	C	Chinese Ex certificate
	G	ATEX / IECEx certificate
	T	Other Ex requirement needs to be specified
Protection Rating	1	IP65
Protection Rating	2	IP67
Others	N	Flow range: No other flow range is specified. The pattern approval flow range is the default,
	N	Transmitter Housing: No customization is required. The default type is acceptable.
	N	Sensor Junction Box: No glue filling by default. If necessary, please specify
	N	Heat Insulation: No heating insulation by default. If necessary, please specify
	N	Accessories: No accessories required. If necessary, please specify