Liquid turbine flowmeter-FAQ 

BCST is a famous manufacturer of flowmeters, including liquid turbine flowmeters in China. The complete package is available at the BCST regarding the measurement of the flow and controlling solutions. Other kinds of flowmeters are also manufacturing and supplying by BCST. For example, the JC060 series of liquid turbine flowmeter and various structures are present at BCST.

Following are the answers to the queries of liquid turbine flowmeter:

What is a liquid turbine flowmeter?

The liquid turbine flowmeter is the main kind of impeller sort of flowing meter. It is the composition of sensors and conversion displays, and there is a two-way blade rotor in the sensor for sensing the approx—rate of flowing liquid, therefore, receiving the total amount of the flow. The liquid turbine flowmeter helps measure the drinks that don’t corrode the stainless steel, corundum in the closed pipes and don’t contain any impurities. The fluid turbine flowmeter is suitable for milk, soyabean oil, diesel, edible oil, and purifying water. The working of the liquid turbine flowmeter is according to the principle of the turbine.

What are the features of a liquid turbine flowmeter?

• The structure of the liquid turbine flowmeter is simple and easy
• The fluid turbine flowmeter has a high accuracy rate and good repetitiveness
• The response time of the liquid turbine flowmeter is good enough
• The liquid turbine flowmeter is convenient and easy to maintain
• Mostly, a liquid turbine flowmeter is helpful for the liquids without the corrosion to the stainless steel
• In a liquid turbine flowmeter, pulse frequency signals are appropriate for totalizer and connectivity with the PC.
• The frequency signal is high in the liquid turbine flowmeter and has strong signal resolution power.
• The range of the liquid turbine flowmeter is high. The large and medium sizes can reach up to 1-20 while small diameters are 1:10.
• The circulating capacity is large enough in liquid turbine flowmeter
• The liquid turbine flowmeter can measure high pressure.

What are the specifications of the liquid turbine flowmeter?

What is the working principle of a liquid turbine flowmeter?

The liquid turbine flowmeter is the speedy kind of flowmeter dependent on the principle of balancing the torque. The harmonious flow passes through the housing of the sensor because the blades of the impeller have a particular angle along the direction of the flow. The pressure of the fluid forces the edge to make the rotational torque. The blades start rotating when the resistance of the fluid and friction torque have overcome. The torque is stable when the torque gets the balance. Under some specific conditions, speed is directly proportional to the flow rate. Because of the blade’s magnetic permeability, there is a magnetic field of the signal detect consisting of coils and permanent magnets.

The blade that is rotating cuts down the magnetic lines of the forces. The magnetic flux of the coil keeps changing periodically. The signals of electrical pulse get induce at both ends of the coil. This signal gets amplify and shaped again by the amplifier. Continuously, there is a formation of the rectangular shape pulse wave and a particular amplitude. Its transmission is displayed on the liquid turbine flowmeter remotely. The display is of the total amount of the fluid or instant flow. In some specific flowing ranges, the frequency of the pulse f is directly proportional to the instantaneous flow Q of the flowing fluid through the sensor.

The equation of the flow: Q=3600*f/k

fàfrequency of the pulse in Hz

kàmeter coefficient of the sensor [1/m3] that is mention in the calibration sheet

Qà is the instantaneous flow (under specific working conditions) [m3/h]

3600à conversion factor in seconds

The meter coefficient of every sensor is fill in the verifying certificate by the manufacturer of the liquid turbine flowmeter. The value of k is present to match the displaying instrument. The display is of the instantaneous flow and total flow.

What are the applications of liquid turbine flowmeters?

The liquid turbine flowmeter is the instrument that helps in providing accurate measurements. The liquid turbine flowmeter and the adjacent flow totalizer help measure the liquid and the flow. The controlling and metering systems of the chemical, petroleum, and metallurgy use a liquid turbine flowmeter. In the pharmaceutical industry, the connection of the sanitary joints with the liquid turbine flowmeter. The liquid turbine flowmeter helps in supplying and processing pure water to the different industries. The liquid turbine flowmeter also serves in the water bottles’ production sector and the food and beverages. The meters and instruments of thermal power plants use liquid turbine flowmeters for pressure, temperature, state of the medium, and effects on the variety of flow rates. The boilers are treating the water plays a major role in the overall working of the boiler; the application of a liquid turbine flowmeter has a direct impact on the smooth working of the process.

What are the factors for installing and maintaining the liquid turbine flowmeter?

Before proceeding towards the installation process, it is essential to communicate to the technical team or manufacturers about the working condition and measuring medium of the liquid turbine flowmeter. The effort is minimum while installing the liquid turbine flowmeter. While installing the liquid turbine flowmeter, you must have bolts, nuts, washers, and suitable tools for the installation.

There are three main factors that you must keep in mind during the installation of the liquid turbine flowmeter:

• The diameter of the straight pipe length must be ten times more from the upstream of the liquid turbine flowmeter and five times the diameter length of the straight pipe downstream of the liquid turbine flowmeter and the same diameter size.
• Install the valves and devices of throttling downstream of the liquid turbine flowmeter.
• The arrow showing on the body of the liquid turbine flowmeter is similar to the actual flow.

The liquid turbine flowmeter requires less maintenance. You can simply clean and examine the liquid turbine flowmeter by removing the liquid turbine flowmeter from the pipe. If the liquid turbine flowmeter needs repair or damage, get in touch with the technical team.

What are the factors that affect the accuracy rate of the liquid turbine flowmeter?

• Protection of the liquid turbine flowmeter: Protection is the most crucial factor while selecting the liquid turbine flowmeter. The selection of the liquid turbine flowmeter is also dependent on the adaptation according to the environment, classifying the explosive mixture, kind of equipment that protects the electrical supply, and other standards for safety purposes.
• Compressive strength of the liquid turbine flowmeter: according to the requirements, it is essential to check the shell of the liquid turbine flowmeter can handle the pressure for 1.5 times the maximum level of the working pressure without causing any damage to the liquid turbine flowmeter or air leakage.

• Ambient temperature of the liquid turbine flowmeter: The electrical components of the liquid turbine flowmeter and detecting the flowing fluid in some of the parts impact the ambient temperature of the liquid turbine flowmeter.
• The humidity of the surroundings of the liquid turbine flowmeter: The high humidity increases the corrosion and causes a reduction in the insulation. The low humidity is the reason for inducing static electricity. You must check the possibility of the changes occurring in the surroundings and inspect the liquid turbine flowmeter whether the humidity is causing the problems or not.
• Electrical interference of the liquid turbine flowmeter: The electrical switches and power cables are the sources of producing electromagnetic interferences. They are the reasons for the errors. The user should ground all the cables and shield them from the origins of the interferences.

• The upstream and downstream sections of the pipe of liquid turbine flowmeter and requirements for straight pipes: The liquid turbine flowmeter is affected by the flowing conditions at the inlet and keeps checking the distributing flow’s velocity. The layout of the pipe can be the reason for the distortion in the flow. Therefore, it is better to use a pipe of suitable length for the upstream straight pipe or install the rectifier to bring stability in the velocity of the flow.

What are the advantages of using a liquid turbine flowmeter?

• The liquid turbine flowmeter is applicable for viscous liquids, non-conductive liquids, solvents, and high-pressure applications.
• The accuracy rate of the liquid turbine flowmeter is high and suitable for the number of applications towards non-conductive liquids, including fuel oil, gasoline, and ultrapure water.
• The liquid turbine flowmeter is more popular than the electromagnetic flowmeter in oil industries due to the purifying of the processes and distilleries.
• The turndown ratio of the liquid turbine flowmeter is 20:1, whose combination is with the mechanical workings. It can make the liquid turbine flowmeter reliable for high and low flowing rates. The liquid turbine flowmeter produces outstanding repeatability as low as 0.05%.
• The flange connection of the liquid turbine flowmeter is applicable for the oil and gas industry. You can see this type of liquid turbine flowmeter on the transportation sites of the oil. The liquid turbine flowmeter is compatible with the high temperature and pressure that make the liquid turbine flowmeter more durable.

Who are the manufacturers of liquid turbine flowmeters?

There is an involvement of many countries regarding the manufacturing of the liquid turbine flowmeter. China, Finland, UK, Germany, and United States are the manufacturers of liquid turbine flowmeters. In China, BCST is among the famous manufacturers of liquid turbine flowmeters. BCST offers JC-060 series of liquid turbine flowmeters resistant to corrosion, and kinematic viscosity is below the 50*10-6m2/s. The structure of the liquid turbine flowmeter is simple and requires less maintenance.  The liquid turbine flowmeter shows and measures the total flow rate through the line of the pipe. The liquid turbine flowmeter is popular among all kinds of the flowmeter.

What are the troubleshooting issues and corresponding solutions regarding the liquid turbine flowmeter?

What are the types of structure of liquid turbine flowmeter?

• Thread connection liquid turbine flowmeter:
• The digital flowmeter sensor is in-line
• The thread connection liquid turbine flowmeter is available in DN4 to 2″ and in other sizes as well.
• The accuracy rate is high that is 0.5% or 1.0% of the readings
• The whole construction of the thread connection liquid turbine flowmeter is compact
• This type of liquid turbine flowmeter is available at a low cost.
• The material of the thread connection liquid turbine flowmeter is 306 or 304 stainless steel.
• It is also known as a volumetric flowmeter.
• The thread connection liquid turbine flowmeter is an NPT thread
• Liquid turbine flowmeter with 4-20mA output:
• The accuracy rate of liquid turbine flowmeter with the 4-20mA output is 0.5% reading
• The level of protection in this liquid turbine flowmeter is IP65.
• The large turndown ratio that is 10:1
• There is no digital display in this liquid turbine flowmeter.
• The material of liquid turbine flowmeter with 4-20mA output is 304 or 316 stainless sheets of steel
• The frequency of the input signal is 0-3000Hz
• The power supply is 24V
• The liquid turbine flowmeter with 4-20mA output consumes power less than 0.5 V
• The size of the flow sensor is DN4 to DN200 (8-inch liquid turbine flowmeter)
• The output is 4-20mA or the pulse
• Tri-clamp connection liquid turbine flowmeter:  
• The tri-clamp connection liquid turbine flowmeter is helpful with the liquids like light oils, water, solvents, and low viscosity chemicals.
• The flowing range of this liquid turbine flowmeter is 1-2250 liters per minute, dependent on the size of the liquid turbine flowmeter.
• The body and rotor of the tri-clamp connection liquid turbine flowmeter are of stainless steel.
• The standard temperature of this type of liquid turbine flowmeter is -30 to 110 degrees Celsius, and the maximum temperature is -30 to 232 degrees Celsius.
• The maximum operating pressure of the tri-clamp connection liquid turbine flowmeter is 16 Barg/0.5 Barg pressure drop at the total flow.
• Flange connection liquid turbine flowmeter:
• The structure of the flange connection liquid turbine flowmeter is simple and easy to understand
• The pressure loss is small, and maintenance is convenient of the flange connection liquid turbine flowmeter.
• The flange connection liquid turbine flowmeter helps measure the volume of the flowing fluid whose viscosity is low in the close pipe.
• Many industries like chemical, petroleum, water supply, and paper use flange connection liquid turbine flowmeter.
• The option of multi-calibration and multi-range of a liquid turbine flowmeter is available.
• You can install the flange connection liquid turbine flowmeter in several ways.
• It is suitable for pure water

How to install a liquid turbine flowmeter?

It is your choice that you install the liquid turbine flowmeter horizontally or vertically.

• Align the bore of the liquid turbine flowmeter with the pipe and make sure the flow’s direction corresponds towards the arrow engraving the body of the liquid turbine flowmeter.
• Attach the liquid turbine flowmeter to the end connections through the hardware and tighten to make the leakage-proof sealing:
• For the thread connection liquid turbine flowmeter, apply a suitable sealant towards the threads of the liquid turbine flowmeter, screw the piping inside the thread connection pipe and tighten it. Strands can be in the flowing stream, and collection at the rotor can cause errors in the measurement.
• For the flange connection of the liquid turbine, the flowmeter installs the gasket between the flange of the liquid turbine flowmeter and pipe. Then, install and tight all the nuts according to the specifications of the gasket.
• Following are the steps of installing magnetic pickup:
• Screw the magnetic pickup in the clockwise direction inside the adaptor until it gets tight. Then, keep rotating the pickup counter in the clockwise direction, just one-quarter turn. Don’t be close with the pliers.
• Keep turning the nut clockwise unless the pickup gets secure. There is a requirement for the thin wall of the socket wrench.
• Attachment of the signal connector towards the pickup and turn the swivel nut unless the connection gets snug.
• Lose the gland nut so that the weatherproof pickup adaptor rotates freely without making the electrical cable twist.
• Slip the weatherproof adaptor over the pickup and tight it.
• Keep tightening the gland nut until the rubber grommet seals the surroundings of the signal cable.

How to disassemble the liquid turbine flowmeter?

• Screw the magnetic pickup outside of the liquid turbine flowmeter body to prevent damage while handling the liquid turbine flowmeter.
• Getaway the retainer ring from a single end of the liquid turbine flowmeter.
• Slide the vane from the body of the liquid turbine flowmeter.
• Now, get away the retainer ring from the other end as well
• Removal for the second vane as well
• No need to remove the bearings and thrust balls from the bearings
• Clean up all the parts of the liquid turbine flowmeter using the solvent that suits the Removal of the material that keeps flowing throughout the liquid turbine flowmeter. The cotton swap helps in cleaning the inner diameter of the bearings.

Final thoughts:

The liquid turbine flowmeter is simple in structure and easy to maintain. The liquid turbine flowmeter is famous in different industries due to its characteristics like quick response time and much more. BCST has been the manufacturer and supplier of liquid turbine flowmeters for more than 20 years, along with several certifications. The customer care agents are always present for resolving all your queries on WhatsApp and Skype as well. Even you send an email to our official email address.  Fast delivery service is available, so don’t waste your time thinking more about liquid turbine flowmeter. Order now and receive your liquid turbine flowmeter just in 7 days.