Coriolis Flow Meter and Mass Meters

$ 7,948.00$ 48,645.00

In a Coriolis mass flow meter, the “swinging” is generated by vibrating the tube(s) in which the fluid flows.  The amount of twist is proportional to the mass flow rate of fluid passing through the tube(s).  Sensors and a Coriolis mass flow meter transmitter are used to measure the twist and generate a linear flow signal.  NIST Traceable and UL Certified for Class 1, Division 1 areas.

Many applications use Coriolis Type Flow Meters but one that is becoming quite popular is the Asphalt industry.  Due to the elevated viscosity and bad fluidity, asphalt flow measurement is always a technical problem.  The pipeline liquid asphalt operating temperature is usually around 200 °C (392 °F).  Although the bitumen temperature is very high, there is still a big viscosity and a tiny number of strong particulate impurities are present in the medium.  Conventional liquid flow meters fulfill their demands for measuring the flow of bitumen.  However, the Coriolis flow meter in-line is an ideal option for measuring asphalt/bitumen flow.

Description

Coriolis Flow Meters

A Coriolis flow meter can detect the flow of all liquids and gases that can be used for the food and chemical industry.  

A Mass Flow Meter, also known as an inertial flow meter is a device that measures the mass flow rate of a fluid traveling through a tube.  The mass flow rate is the mass of the fluid traveling past a fixed point per unit of time.  Coriolis mass flow meters can detect the flow of all liquids and gases which can be used used for the food and chemical industry.

The Mass Flow Meter does not measure the volume per unit time (e.g., cubic meters per second) passing through the device; it measures the mass per unit time (e.g., kilograms per second) flowing through the device.

Coriolis mass flow meters can detect the flow of all liquids and gases which can be used for the food and chemical industry

Technical Side of the Coriolis Flow Meter:

Volumetric:

The volumetric flow rate is the mass flow rate divided by the fluid density.  If the density is constant, then the relationship is simple.  If the fluid has varying density, then the relationship is not simple.

Density:

The density of the fluid may change with temperature, pressure, or composition, for example.  The fluid may also be a combination of phases such as a fluid with entrained bubbles.

The Actual density is due to the dependency of sound velocity on the controlled liquid concentration.

What happens to the Fluid?

Fluid is being pumped through the Coriolis flow meter or mass flow meter.  When there is mass flow, the tube twists slightly.  The arm through which fluid flows away from the axis of rotation must exert a force on the fluid, to increase its angular momentum, so it bends backward.

Curved Mass Flow Meters:

curved tube mass flow meters are designed where the fluid is led through two parallel tubes.   The actual frequency of the vibration depends on the size of the mass flow meter and ranges from 80 to 1000 Hz.

No Flow:

When no fluid is flowing on a Coriolis flow meter, the motion of the two tubes is symmetrical, as shown in the left animation.

What happens to the Coriolis Flow Meter during mass flow:

  • Some twisting of the tubes
  • The arm carrying the flow away from the axis of rotation must exert a force on the fluid to accelerate the flowing mass to the vibrating speed of the tubes at the outside (an increase of absolute angular momentum), so it is lagging behind the overall vibration.

The arm through which fluid is pushed back towards the axis of movement must exert a force on the fluid to decrease the fluid’s absolute angular speed.

The inlet arm and the outlet arm vibrate with the same frequency as the overall vibration, but when there is mass flow the two vibrations are out of sync:  The inlet arm is behind, and the outlet arm is ahead.

The two vibrations are shifted in phase concerning each other.   The degree of phase shift is a measure of the amount of mass that is flowing through the tubes.

Coriolis Flow Meter Economics:

These mass flow meters provide short payback periods on applications where measurement accuracy lowers production costs.   They also have a short payback when multiple measurements (including density, temperature, and pressure) are needed.

On the other hand, they may not be competitive when used in simple flow measurement applications.  Where volumetric sensors are sufficient and where repeatability is more important than precision another type like  Micro Mass Flow Meter, Turbine, Electromagnetic, Variable Area, Ultrasonic and Vortex may be the preferred choice.

Coriolis mass flow meters can detect the flow of all liquids and gases which can be used for the food and chemical industry.  They are also the best choice for an accurate flow meter.

Coriolis Force

A Coriolis flow meter measures the mass flow rate of a fluid by analyzing the changes in the Coriolis force.  This occurs as the fluid flows through a vibrating tube. The response time of a Coriolis flow meter refers to the time it takes for the meter to detect a change in flow rate and produce an output signal.  Several factors can impact the response time of a Coriolis flow meter, including:

  1. Tube diameter and length:  The size and length of the vibrating tube can affect the response time.  Generally, longer and narrower tubes have a slower response time.  This is because it takes longer for the fluid to flow through and affects the tube’s vibrations.
  2. Fluid density and viscosity:  The density and viscosity of the fluid being measured can also affect the response time.  Higher density or viscosity fluids can take longer to flow through the meter, leading to a slower response time.
  3. Flow rate:  The flow rate of the fluid can also impact the response time.  Generally, faster flow rates can result in a faster response time.  This is because the fluid is moving more quickly through the meter.
  4. Meter design and technology:  The design and technology of the Coriolis flow meter can also impact its response time.  Some meters may have faster response times due to advanced sensors and electronics.
  5. Environmental conditions:  The environment in which the meter is installed can also impact the response time.  Factors such as temperature, pressure, and vibration can affect the meter’s ability to detect changes in flow rate quickly.

Overall, it is important to consider these factors when selecting and installing a Coriolis flow meter.  This is to ensure accurate and reliable flow measurement.

Additional information

Weight 54 lbs
Dimensions 36 × 24 × 10 in
Type

U Shape, V Shape, Triangle Shape

Size

1/4" (22- 88 Lbs./Hr), 3/8 (220-505 Lbs./Hr), 1/2" (661-6,700 Lbs./Hr), 1" (1,320-13,300 Lbs./Hr), 1-1/2" (5,250-66,000 Lbs./Hr), 2" (11,000- 118,000 Lbs./Hr), 3" (22,046- 312,000 Lbs./Hr), 4" (44,090- 485,000 Lbs./Hr), 6" (110,231-1,102,311 Lbs./Hr), 8" (220,416-2,204,000 Lbs./Hr)

Media Type

Liquid, Gas

Pressure Class

STANDARD ANSI150LB, OPTIONAL: ANSI300LB, ANSI600LB, ANSI900LB ANSI1200LB

Connections

Flange – ANSI, Tri-Clamp Sanitary, Compression

Voltage

18-36 VDC, 85-265 VAC

Classification

UL/CSA approved for Class I, Div.1 II 2G Exdbib IIB/IIC T*Gb (ATEX Pending) GOST: 1Exd[ib]IICT6X GOST: 1ExibIIC(T1-T4)X UL, cCSAus, Ex NEPSI, NIST / NTEP Traceable Calibration

Output

4-20 MA, 0-10KHZ, 0-10VDC (Optional)

Communication Protocol

HART, RTU RS485

Remote Display

Integral Display, Remote Mounted Display

LCD Display

Yes

QC Test Certificate

No, Yes

Accuracy

0.1%, 0.2%, 0.5%

Specifications

Coriolis Flow Meter Specifications

Flange TypesANSI classes - 300, 600, 900 and 1500 (per ANSI B16.5)
Specific Gravity0.35 to 1.50
Accuracy Limitsaccuracy limits (AGA 9 compliant) are:
• ± 1% without a flow calibration (10” and smaller line sizes)
• ± 0.7% without a flow calibration (for 12” and larger line sizes)
• ±0.1% with a flow calibration
Model(s) 3411 and 3412 accuracy limits are:
• ± 1.5% without a flow calibration
PowerMeter
• 10.4 VDC to 36 VDC
• 11 W power consumption (15 W maximum)
Serial cable
• Belden #9940 or equivalent (22 gauge)
— Capacitance (pF/m) 121.397 (conductor to conductor)
— capacitance (pF/m) 219.827 (conductor to other conductor and shield)
— Resistance (DC) DCR @ 20° C (recommended)
Ethernet cable
• Cat-5 Standard 100 Mbps
Frequency (see Table 3-1)
22 AWG wire characteristics areas follows:
— Capacitance = 20 pF/ft or 20 nF/1000 ft (between two wires)
— Resistance = 0.0168 Ohms/ft or 16.8 Ohms/1000 ft
— Pull-up voltages 24 VDC

Downloads

SRS Coriolis Mass Flow Meter Brochure

Coriolis Flow Meter Quick Startup

0-10VDC to 4-20 MA Converter

Instrument Test

Coriolis Flow Meter Operator Display Screens-Secure

Pressure Drop

1/2″ Pressure Drop

Coriolis Flow Meter and Mass Meters

1″ Pressure Drop

Coriolis Flow Meter and Mass Meters

2″ Pressure Drop

Coriolis Flow Meter and Mass Meters

3” Pressure Drop

Coriolis Flow Meter and Mass Meters

Accuracy

Mass Accuracy

Coriolis Flow Meter and Mass Meters

Volumetric Accuracy

Coriolis Flow Meter and Mass Meters

Q&A

A Q&A, or Question and Answer session, is an interactive format used to facilitate discussion. It is also used to provide information about a specific topic. In the case of Coriolis flow meters, a Q&A session would serve as an opportunity for participants to ask questions about the functioning, installation, calibration, applications, and troubleshooting of Coriolis flow meters.

During the Q&A session, experts or individuals with expertise in Coriolis flow meters would provide insightful and informative responses to these questions. Additionally, they may share their knowledge, experiences, and best practices to help attendees better understand and utilize Coriolis flow meters effectively. Moreover, the session would foster an open and collaborative environment, catering to the specific interests and concerns of those seeking information about Coriolis flow meters.

Coriolis flow meters are widely used in industrial applications for accurate and reliable measurement of fluid flow. In this Q&A Coriolis Flow Meters, we will provide an overview of what Coriolis flow meters are, how they work, and some benefits they offer. Let’s get started!

Q: What is a Coriolis flow meter?

A: A Coriolis flow meter is a type of mass flow meter that measures the mass flow rate of a fluid directly. It works by inducing vibration in the measuring tube and measuring the phase shift between two points on the tube.

Q: What fluids can be measured with a Coriolis flow meter?

A: Coriolis flow meters can be used to measure the mass flow rate of a wide range of fluids, including liquids, gases, slurries, and even multiphase flows.

Q: What are the advantages of using a Coriolis flow meter?

A: The advantages of using a Coriolis flow meter include its high accuracy, direct mass flow measurement, and ability to measure a wide range of fluids. Finally, they are also very versatile and can be used in a variety of industries and applications.

Q: What are the main applications of Coriolis flow meters?

A: Coriolis flow meters are commonly used in the food and beverage industry, pharmaceuticals, chemicals, oil and gas, and many other industries that require accurate and reliable flow measurements.

Q: How do you install and maintain a Coriolis flow meter?

A: Coriolis flow meters should be installed in a location where the fluid is fully developed, and the flow is uniform. Maintenance typically involves periodic calibration and cleaning of the measuring tube to prevent the buildup of solids or other contaminants that may affect the accuracy of the measurement.

Q: What are the key factors to consider when selecting a Coriolis flow meter?

A: When selecting a Coriolis flow meter, it is important to consider factors such as the expected flow rate, viscosity of the fluid, pressure, and temperature range, accuracy requirements, and the environment in which the meter will be installed.

Q: How does a Coriolis flow meter compare to other types of flow meters?

A: Compared to other types of flow meters, such as turbine, magnetic, or ultrasonic flow meters, Coriolis flow meters offer the advantage of direct mass flow measurement with high accuracy and reliability. Additionally, they can also measure a wide range of fluids and are not affected by changes in fluid properties, such as temperature or viscosity. However, they can be more expensive and require more careful installation and maintenance than some other types of flow meters.

Q: What is a Coriolis flow meter?

A: A Coriolis flow meter is a type of flow meter that measures the mass flow rate of fluids. Additionally, It works based on the principle of the Coriolis effect, which causes a vibrating tube to twist when a fluid flows through it. Finally, the degree of twist is proportional to the mass flow rate of the fluid, allowing for accurate measurement.

Q: What are the benefits of using a Coriolis flow meter?

A: Coriolis flow meters have several advantages, including:

    • High accuracy and precision
    • Able to measure both liquid and gas flows
    • Low-pressure drop
    • No moving parts that can wear out or be damaged
    • A wide range of flow rates can be measured
    • Ability to measure density and temperature as well

Q: What applications are Coriolis flow meters commonly used in?

A: Coriolis flow meters are used in a wide range of industries and applications, including:

    • Chemical and petrochemical processing
    • Food and beverage production
    • Pharmaceutical manufacturing
    • Oil and gas exploration and production
    • HVAC systems
    • Water and wastewater treatment
    • Power generation
    • Mining and minerals processing

Q: What factors should be considered when selecting a Coriolis flow meter?

A: When selecting a Coriolis flow meter, several factors should be considered, including:

    • Flow rate range: Make sure the flow meter can measure the required range of flow rates.
    • Fluid type: Ensure that the flow meter is compatible with the fluid being measured, including its viscosity and corrosiveness.
    • Process conditions: Consider the process pressure and temperature, as well as any potential vibrations or shocks.
    • Accuracy requirements: Determine the required level of accuracy and precision for the application.
    • Installation requirements: Consider the space available for installation, as well as any piping or wiring requirements.

Q: What maintenance is required for Q&A Coriolis Flow Meters?

A: Coriolis flow meters are relatively low maintenance, with no moving parts to wear out or be damaged. However, regular calibration may be necessary to ensure accurate readings. In addition, the flow meter should be inspected periodically for any signs of damage or wear. Finally, any necessary repairs should be made promptly.

Buy Coriolis Flow Meter

Advantages and Disadvantages

  • Design Pressure:  1200 PSIG
  • Design Temperature:  -282 to 300 Deg. C
  • Sizes: 1/2″ to 4″ but larger sizes are customized.  
  • Fluids/ Applications:  Liquids (clean/ dirty/viscous/ slurries) clean /liquified gases
  • Flow range:  0 – 4,500 GPM
  • Material of tube:  Mostly in stainless steel, other options
  • Accuracy:  +0.1% to +0.5% of flowrate
  • Range ability:  20: 1
  • Bi-Directional flow measurement
  • Measured variables:  Mass flow, volume flow, temperature, and density.
  • Output:  Pulse, 4~20mA, RS485, HART, 0-10VDC (Optional)
  • Power supply:  85~265VAC or 18~36VDC
  • NIST Traceable and Certified for Weights and Measures
  • UL, cULus Rated for Class 1, Division 1, Groups D-G.

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