Dec 17, 2018 before calibrating a positive displacement flow meter, it is best to aim for an end result that is at a higher standard than you actually need to achieve. How to calibrate a flow meter calibration procedures. This package may contain up to two complete meters along with the optional installation kits. Daniel series 1200 and 1500 liquid turbine flow meter systems combine. Increase the flow rate until an acceptable flow rate range has been achieved reduced or zero flow rate 1. Turbine flow meters are designed with wear resistant internal components to. Flow rectifiers ensure a laminar flow in the axial direction. Darhor tech established the calibration laboratory since 2001 which now is one of the few flow calibration laboratories in china. Transcanada calibrations is the worlds largest meter test facility by flow volume. The rotational speed of the rotor is directly proportional to the velocity of the fluid travelling through the meter. Turbine flow meters use the mechanical energy of the liquid to rotate a rotor in the flow stream. Traceability a calibration is a comparison of the instrument meter and a standard. We are also the reference for the calibration of gas meters, having developed a unique procedure for the calibration of diaphragm and rotary meters. May 29, 2017 in this video latest instrumentation technician course flow meter calibration setup.
Mark ii turbo meters combine wide rangeability, low pressure. Turbine flow meter installation and operation guide. Canadas largest transmission pipeline is the source of consistent, stabile gas flow for transcanada calibrations fully enclosed, environmentally controlled. A knife edged diverter cuts a narrow stream of fluid and simultaneously starts a counter and timer at the centre point of the diversion. This is typically done using a supremely accurate weigh scale. Flow meter calibration techniques titan talks technical. The piston prover method is ideal for ultrasonic flow meter calibration, fuel flow meter calibration, and turbine flow meter calibration to a high degree of accuracy. Unpacking turbine flow meters are generally shipped in one package unless optional hardware or equipment is ordered.
In this video latest instrumentation technician course flow meter calibration setup. The flow rate at the reference turbine meter is converted to the conditions prevailing at. To ensure that your calibration of your flow meter achieves the results you want, it is smart. Control and instrumentation engineers measure this value to monitor and regulate the speed and efficiency of industrial flow processes and devices. The flow turbine meter is designed in such a way that it allows the fluid flow through it from a straightened chamber which helps in reducing the instability. Types of flow meters used as master meters include turbine meters, positive displacement meters. Flow meter calibrations we provide a comprehensive range of flow meter calibrations services for liquid, gas and cryogenic field calibrations. Flow meter calibration facilities two basic types of calibration facilities open design uses existing pipeline flow side branch.
Our iso iec 17025 accredited lab with national institutes of technology nist traceable turbine flow meter calibration services will ensure that your instruments can be trusted for accuracy and repeatability. The rotational speed of the rotor is directly proportional to the velocity of the fluid travelling through the. Industrial working model principal of turbine meter, 3d animation video. There is hardly any part of modern life that is not touched by these devices and because, or in spite of this, the flow meter calibration procedures are increasingly important. Hoffers calibration laboratory carries iso 17025 and z5401 accreditation. Turbine meter calibration transcanada calibrations. Turbine flow meter manual 0915 07215 518 page 7 section 2. An mpu ultrasonic gas flow meter with zerocalibrated transducers. Turbine flow meter installation procedure turbine flow meters are designed with wear resistant internal components to provide troublefree operation and a long service life. Calibraiton, darhor, flowmeter for water, gas flow meter darhor. Our unique mrf facility offers highpressure and low. The ftb1400 series turbine meter repair kit is designed for easy field.
Hoffers calibration laboratory carries iso 17025 and z540. There is hardly any part of modern life that is not touched by these devices and because, or in spite of this, the flow meter. This method is often regarded as the most accurate way to measure the volume of flow. Our laboratory was equipped with 4 sets of flow standard devices with total 8 pipelines. Loy upp, defines calibration of an instrument or meter as the process or procedure of adjusting an instrument or a meter so that its indication or registration is in close agreement with a referenced standard. Flow meter calibration in india process control devices. Our flow meter calibration services include research and development for metering and flow measurement equipment used in natural gas pipelines and gasfired power plants. The flow meter is characterized by simple structure, high precision and easy installation and repair. Turbine flow meter calibration a turbine meter consists of a practically frictionfree rotor pivoted along the axis of the meter tube and designed in such a way that the rate of rotation of the rotor is proportional to the rate of flow of fluid through the meter. The author of the wellknown book fluid flow measurement, e. Installation procedure before installation, the flow meter should be checked for foreign material and to. As a note the gas flow calibration should be done first before any liquid calibration is. The first article in this twopart series on coriolis flow meter calibration and.
The frequency at which the blades turn represents a given flow because each blade sweeps out a fixed volume of fluid. To ensure that your calibration of your flow meter achieves the results you want, it is smart to follow the following best practices. An axial flow turbine meter is used in different industries to measure the flow of liquids such as fuels, chemicals, alcohols and other caustic liquids. Acs calibration is committed to providing our customers. This is typically done using a supremely accurate weigh scale which must also be approved by nist. Piping should be the same size as the meter bore or port. First of all, make sure that your testing equipment is up to. Closedloop purposebuilt flow meter calibration facility. Electromagnetic flowmeter,vortex flowmeter,turbine flowmeter. Series turbine meter, the included factory calibration will provide dependable and accurate flow information. Compliant calibration procedure, certificate and kfactor table.
This definition captures the concept of calibration as it is understood. Frequencybased turbine style flow transducers use a flow factor gain multiplier to scale their raw channel output frequency whether in rpm or hertz into a high level final. Unique procedure for calibration in totalization of diaphragm and rotary meters isoiec 17025. The customer may use the flow meter and its calibration results in different ways. Flow meter calibration services southwest research institute. Mark ii turbo meters accept a multitude of metermounted readout devices and provide calibrated pulse outputs for electronic measurement. Mark ii turbo meters combine wide rangeability, low pressure loss, uninterrupted gas flow and near instantaneous response to rapid flow change. Fluid entering the flow meter is first conditioned by the inlet flow straightener which reduces turbulence in the fluid. The piston prover method is ideal for ultrasonic flow meter calibration, fuel flow meter calibration, and turbine flow meter calibration to a high. Turbine meters can consist of a single rotor or dual rotors. We calibrate a customers flow meter and deliver a calibration report that documents the calibration procedure, the calibration results, and their uncertainty on a feeforservice basis. Turbine flow meter turbine flow meters are volume counters operating on the woltmann impeller counter principle. The linearity specification is dependent on the characteristics of the calibration fluid. Each daniel turbine meter is comprised of a cylindrical housing that contains a precise turbine rotor assembly.
Calibraiton, darhor, flowmeter for water, gas flow meter. Flow meter calibration setupflow meter calibration procedure. Regular inspection and calibration of your flow meter is necessary in order to ensure consistently precise readings. Mark ii turbo meters accept a multitude of meter mounted readout devices and provide calibrated pulse outputs for electronic measurement. Following is a brief discussion of the sensitivity of a turbine flowmeter to viscosity and the description of a method uvc which can be used to compensate its. The flow meter is calibrated to the highest accuracy by weighing. A master meter is a flow meter that has been calibrated to a very high degree of accuracy. A flow meter is a test device used to measure the flow rate of process fluids and gases in industrial plants and facilities. The ratio of meter frequency divided by the kinematic viscosity of the calibration fluid is also presented for use when temperature compensation is necessary. Having shorter pipe lengths, other system components and elbows to close to the flow meter may adversely affect the accuracy and repeatability of the flow meter.
Pdf measurement uncertainty of turbine flow meter calibration. This is the weight method, where the flow of liquid through the meter being calibrated is diverted into a vessel that can be weighed either. Transcanada calibrations turbine meter calibration. Before calibrating a positive displacement flow meter, it is best to aim for an end result that is at a higher standard than you actually need to achieve. The calibration procedure of liquid flow meter for full pipe flow was developed. The turbine flow meter and its calibration turbine meters a turbine meter consists of a practically frictionfree rotor pivoted along the axis of the meter tube and designed in such a way that the rate of rotation of the rotor is proportional to the rate of flow of fluid through the meter. A primer on flowmeter calibration techniques flow control. Thermal flow meter technology is suitable for landfill gas measurements and does provide some advantages over other technologies when properly understood and applied. One or two magnetic pickoffs are mounted in a boss on the meter body. Practical aspects of turbine flow meters calibration and uvc. By looking to reach an accuracy of approximately four times the level required based on the unit under test, you can lower the frequency at which calibration needs to be repeated. Turbine gas flow meter consists of turbine flow sensor and display instrument and it is made by us using foreign stateoftheart technologies, which is an ideal gauge for measuring of liquid flow.
Our iso iec 17025 accredited lab with national institutes of technology nist. These meters are used in multiple industries to reliably measure the velocity of a variety of liquids, gases and vapors. The flow rate refers to the speed at which a process fluid is moving through pipelines, orifices, or vessels at a given time. Turbine flow meter calibration service acs calibration offers laboratory and onsite turbine flow meter calibration services. Flow meter technologies are not there yet, but coriolis technology is getting pretty close with increasingly powerful diagnostics. This document describes the flow test procedure of the mpu series b ultrasonic. Flow meter calibration services at our metering research facility cover a wide range of static pressures for all types of commercially available natural gas flow meters. Turbine flow meter axial turbine meter smartmeasurement. The meter works below minimum acceptable flow rate. The ftb1400 series turbine meter repair kit is designed for easy field service of a damaged flow meter, rather than replacing the entire flow meter see appendix b on page 12 for repair kit information. May 22, 2016 industrial working model principal of turbine meter, 3d animation video. Turbine flow meter calibration procedure instrumentation forum. The piston prover contains a piston which produces volumetric flow by positive displacement. A meter prover is a device used to verify flow meter uncertainty in order to establish.
Each flow meter is calibrated to find its unique kfactor, which is supplied with the flow meter when purchased. Series turbine meter, the included factory calibration will provide dependable and. In these cases, unless the user maintains a calibration facility, the meter is typically sent to an independent calibration laboratory. The turbine flow meter and its calibration turbine meters a turbine meter consists of a practically frictionfree rotor pivoted along the axis of the meter tube and designed in such a way that. One of the oldest methods of flow meter calibration is an extension of the bucket and stopwatch approach where a custom diverter is coupled to an electronic clock and counter system. Flow meter performance, validation and compliance to 40. Mar 14, 2011 the turbine flow meter and its calibration turbine meters a turbine meter consists of a practically frictionfree rotor pivoted along the axis of the meter tube and designed in such a way that the rate of rotation of the rotor is proportional to the rate of flow of fluid through the meter. How to calibrate a positive displacement flow meter. Typically, 10 data points are taken over the standard 10to1 flow range of the meter. The first article in this twopart series on coriolis flow meter calibration and verification discusses coriolis flow meter basics, theory of operation, verification and calibration paradigms. Flow rectifiers ensure a laminar flow in the axial direction of the wheel. Types of flow meters used as master meters include turbine meters, positive displacement meters, venturi meters, and coriolis meters the meter to be calibrated and the master meter are connected in series and are therefore subject to the same flow regime. Canadas largest transmission pipeline is the source of consistent, stabile gas flow for transcanada calibrations fully enclosed, environmentally controlled high pressure natural gas meter test facility. We are also the reference for the calibration of gas meters, having developed a unique procedure for the calibration of.
The flow meter is often used as a transfer standard to compare. Shown is a dual rotor meter with its casing removed and a single rotor meter with casing and a magnetic pickoff to record the rotors frequency. Turbine flow meter installation procedure instrumentation tools. Clean the turbine the meter does not count, but the flow rate is correct 1.
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