Variable area flowmeter rotameter the original insatech. The flow rate inside the rotameter is measured using a float that is lifted by the fluid flow based on the buoyancy and velocity of the fluid opposing gravity pulling the float down. Buy best glass tube rotameter with escrow buyer protection. Glass tube rotameter, glass tube flow meter, glass tube. Join the grabcad community today to gain access and download. Overview rotameter type ramc metal short stroke rotameter rakd mini rotameter ragg housing rotameter measurable flow rates water 20c min.
A rotameter consists of a tapered tube, typically made of glass with a float a shaped weight, made either of. Rotameters variable area flow meters yokogawa america. Metal tubes are used where opaque liquids are used or temperature or pressure requirement is quite high. A rotameter consists of a tapered tube, typically made of glass with a float, made either of anodized aluminum or a ceramic, actually a shaped weight, inside that is pushed up by the drag force of the flow and pulled down by gravity. In the case of glass tubes, the flow rate at the upper edge of the float is read on the tube scale or an attached scale f1. The use of a bypass arrangement with unions or flanges and valves as illustrated in figure rp16. Rotameter variable area flowmeter yokogawa south africa. Abb series 10a4600 glass tube rotameter with pvc end fittings. The float moves freely up and down in the tapered borosilicate glass tube with fluid flow from bottom to top. Glass tube flowmeter 7450 series king instrument company. An introduction to flow measurement with rotameters azom. Customers have been asked why they select rotameters. The fluid passes through the metering tube from bottom to top and consequently needs to be installed vertically and flow direction is upwards. If the tube is made of metal the float position is transferred to an outside indicator via a magnetic coupling.
Variable area flowmetersg series and m series 3 variable area flowmeters variable area flowmeters are fitted with measuring tubes made of glass or metal. The float in the rotameter is located at one place to avoid damage during transit. The drag force for a given fluid and float cross section is a function of flow speed squared only. The king instrument 7200 series rotameter that is used in water service has a maximum temperature of f 54c and a maximum pressure rating of 150 psig. Glass tube rotameter it operates on the principle of variable area the fluid in the glass tube raises the float in the taper tube increasing the area of passage of fluid. They are a costeffective flow measuring device that provides.
A rotameter is a device that measures the volumetric flow rate of fluid in a closed tube. Metal tube variable area liquid rotameter for micro flow. This free area is related to the flow rate, the weight of the float and the density and viscosity of the fluid. Plastic tubes are also used in some rotameter designs. The metal float is usually made of stainless steel to provide corrosion resistance. Maxiflotm glass tube rotameter kr 1 overview maxiflotm ka series glass tube rotameters are rugged, versatile and accurate variable area va flow meter offering 2. Floats typically have sharp, or metering, edges which will point to a specific reading on the scale. Download catalog glass tube rotameter owing to their simplicity, lowcost but highreliability nature, these meters have found applications in a wide variety of industries including but not limited to paperfiber, steel, petrochemical, foodbeverage, airconditioning. If the mechanical, thermal or chemical resistance properties of the glass meter tube. This mechanical principle is as simple as it is reliable. Glass tube rotameter glass tube rotameter with screwed. King instrument 7200 series rotameters used in air service have a maximum temperature rating of 100f 38c and a maximum pressure rating of 100 psig. The flow metering tube is transparent giving you full insight into the process and position of the float a scale on the outside of the tube indicates the true flow rate. Glass tube variable area flowmeter supplier variable.
Rotameter variable area flowmeter yokogawa philippines. Variable area basic fundamentals flowmeter and descriptions. Metal tube rotameter, characterized by high strength, safety, and durability, is designed to measure the flow of such medium as liquid, gas, and vapor etc. Va master fgm1190 glass tube variable area flowmeter cifgm1190en. The flowrate scale for flowmeters with glass meter tubes is preferably applied directly on the meter tube. All the measurement tubes in this series of variable area flowmeters are made of either glass or plastic. The rotameter should be used only for the fluid or gas for which it is designed. The variable area flowmeter is one of the oldest and mature principles in flow measurement with its simple design. The float takes up a position where buoyancy forces and the float weight are balanced in proportion to flow rate. This 250mm scale, economical glass tube flowmeter features 304 stainless steel case construction. Glass tube rotameter manufacturers in mumbai, india. The basic rotameter is the glass tube indicatingtype. Glass tube variable area flowmeter purgemaster fgm6100 purgemaster fgm6100 flowmeters are low capacity variable area flowmeters for both liquid and gas with an excellent selection of material and scale lengths in a single product family design.
The tube is made of borosilicate glass, and the float can be manufactured by metal usually stainless steel to prevent corrosion, glass or plastic. The acrylic body integral machined cut in acrylic body from imported transparent acrylic blocks sheets. Omicron variable area flow meters rotameters work on the principle of variable area. This shows if the float is stuck since it will only rotate if it is free. Conversion factors for other gases and other operating conditions are available. Swagelok g series models contain glass measuring tubes, which allow direct viewing of the process fluid and direct reading of the flow. Glass rotameter the rotameter ragn is designed for continuous flow measurement of liquids and gases. Early designs had free floats that rotated in response to changing gas and fluid. Glass tube flowmeters 7430 series king instrument company. Their top six responses are clues as to why a rotameter continues to be successful even after a hundred years. A rotameter is a device that measures the volumetric flow rate of fluid in a closed tube it belongs to a class of meters called variable area meters, which measure flow rate by allowing the crosssectional area the fluid travels through to vary, causing a measurable effect.
Rotameter working principle animation instrumentationtools. Abb series 10a4600 is a glass tube rotameter variable area flow meter similar to the 10a4500 model but with pvc end fittings, with the option of stainless steel, tantalum and ptfe or pvc coated floats. As gravity works in a vertical orientation so the tube needs to be vertically oriented. Variable area flowmeter rotameter the original yokogawa. The primary limitations of general purpose rotameters are the pressure and temperature limits of the glass metering tube. It measures flow rate by allowing the crosssectional area the fluid travels through, to vary, causing a measurable effect. Installation, operation, and maintenance instructions for. The conical glass metering tube includes a free rotating float which provides self stabilization. The medium passes through the metering tube from bottom to top and consequently rises the float until there is an annular gap between the inside surface of the metering tube and the float and equilibrium of the following forces has been achieved. It is recommended that all glass tube rotameter installations incorporate the use of a bypass arrangement for either liquid or gas service as illustrate in fig. Purge glass tube rotameter, glass tube rotameter, rotameter. It is widely applied in industries such as petro,chemical,poer supply,food,pharmcy and water treatment,etc. The tube is precision formed of borosilicate glass, and the float is precisely machined from metal, glass or plastic. The variable area meter, popularly called a rotameter is basically a vertically tapered tube, with the small diameter in the downward position.
The measuring tube can be made of glass, plastic or metal depending on the application. Aug 02, 2011 for the love of physics walter lewin may 16, 2011 duration. These products find large acceptance in diverse industries and this makes them among the most demanded products in the market. The fluid flows up through the tapered tube forcing the float to a position with sufficient free area to enable the flow to pass. With a broader range of flow rates available, glass tube rotameters are suitable for a variety of liquids and gases. A rotameter measures the flow of liquids, gases and steam by using a float inside a conical tube. Glass tube rotameter gas rotameter manufacturer from. The float moves up in proportion to the rate of flow of fluid and get stabilized when the weight of the float is balanced by the upward hydraulic force. Principle the differential pressure across the annulus area is constant and the flow rate is measured as a function of the annulus area.
These are available in all standard material of construction and can be offered with a flow regulating needle valve to give a constant flow irrespective of the supply or. At the time we occupied a 400 square foot space in a commercial building. Available in complete acrylic body or stainless steel body with glass metering tube. Although classified as differential pressure units, they are, in reality, constant differential pressure devices. A rotameter consists of a tapered tube, typically made of glass with a float a shaped weight, made either of anodized aluminum or a ceramic, inside that is pushed up by the drag force of the flow and pulled down by gravity. A rotameter is a device that measures the flow rate of liquid or gas in a closed tube rotameter. Pdf file customer support 188886331 toll free in usa or 76347610. Installation instructions for meters with hastelloy fittings pdf. Purge rotameters are economical and suitable for low flow rate indication for fluids. Glass tube rotameter in maharashtra manufacturers and. The conical glass metering tube has a free rotating float.
Abb glass tube rotameters with pvc ends buck sales. Other types include glass tube rotameters with stainless steel case, armored rotameters, pvc rotameters and acrylic rotameters. The drag force for a given fluid and float cross section is a function of flow speed squared only, see drag equation. When measuring liquid or gas flow at higher pressures and temperatures than is suitable for plastic, you can achieve accurate flow rates with robust glass tube rotameters variable area flow meters from brooks instrument.
In the case of glass tubes, the flow rate at the upper edge of. Swapan basu, ajay kumar debnath, in power plant instrumentation and control handbook, 2015. Glass tube rotameter, rotameters, manufacturer, supplier. Glass tube rotameters the basic rotameter is the glass tube indicatingtype. Flowtech glass tube variable area flow meters rotameters are intended for general in line and bypass metering applications i.
Pdf the flow in a floating element flow meter rotameter was studied with laser doppler anemometry lda and. Options for rotameter float materials and designs extend flow ranges for different fluids within a given rotameter tube design. Due to its operating principle the rotameter is usually installed in. It belongs to a class of meters called variable area meters, which measure flow rate by allowing the crosssectional area the fluid travels through, to vary, causing a measurable effect. A rotameter measures the flow of liquids, gases and steam by using a float inside a tapered tube. We offer these high quality and extremely reliable products that offer world class perforamance. The float rises within the tube as the flow increases. How to install a rotameter a rotameter, also known as a variable area flowmeter, is a device that measures the flow rate of liquid or gas in a closed tube.
The pressure drop across the flow meter remains constant over the entire flow range. Flow measuring instruments, glass tube rotameter, low flow. Globally approved for use in hazardous environments, metal tube rotameter variable area flow meter manufacturer brooks offers a range of metal tube rotameters that include corrosionresistant options for metering aggressive fluids and multiple connection options to make it easier to interface our meter into existing industrial systems. Plastic tubes are also used in some rotameter designs due to their lower cost and high impact strength.
An introduction to flow measurement with rotameters. Safetyshielded glass tube are in general use for measuring both liquids and gases. To produce the finest group of rotameters ever sold. The product line consisted of a total of 12 model numbers. Flow point india company opened its doors in 1991 with one major goal. Acrylic body rotameter it is mainly used for water salt water, air, nitrogen, hydrogen, natural gas. Generally, the rotameter is a tube made of plastic, glass or metal combined with. The differential pressure across the annulus area is constant and the flow rate is measured as a function of the annulus area.
Glass tube models glass tube flowmeters are read by the position of the float or ball within the flowmeter tube. Instruments are one of the leading manufacturers, suppliers and exporters of glass tube rotameter, glass tube flow meter, glass tube rotameter with highlow switches. The grabcad library offers millions of free cad designs, cad files, and 3d models. Metal tube models the flow rate is read with the pointer on the scale or the led display. Glass tube rotameter variable area flow meters brooks. This step is not necessary if the scale is etched on the metering tube. Metal tube variable area flow meters brooks instrument. Variable area flowmeter glass tube variable area flow meter. With two small manual lathes, a cutoff saw and two drill presses we began production. Maxiflotm ka series glass tube rotameters are rugged, versatile and accurate variable area va flow. The flow rate is read at the upper, top edge of the float or ball. The rotameter variable area principle the rotameter is one of the oldest and mature principles in flow measurement. Rotameter variable area flowmeter yokogawa electric.
Thie short rotameter ragk is designed for measurement of liquids and gases. Maxiflotm metal tube rotameter 2 operation principle variablearea flow meters, often called rotameters, consist essentially of a tapered tube, a float and scaled indicator as you see in the figure below. It features a clear polycarbonate shield surrounding the glass metering tube. K500 series glass rotameter consist of a tapered glass tube,both ends bases,and four 8 holding studs,easy installation,thread assembled and equipped with flow control values. Rotameter applications extend across industries because it was and still is an economical way of measuring very low to high flow rates. Metal tube rotameters rotameter manufacturer chemtrols offers a wide range of variable area flow meters rotameters for various flow measuring applications. King introduces a chemical resistant, borosilicate glass tube meter series for liquid service. Glass tube rotameter manufacturers and supplier in delhi. Tansa glass tube rotameter is basically a variable area flow meter. Metal tube variable area liquid rotameter adopts variable area measuring principle to measure micro flow of liquid and gas of multiple directions. It is especially suitable for measuring the corrosive and turbid liquid as a result of its fine characteristics of high pressure and temperature resistance. The gap between the tube and float is larger at the top to allow a greater flow to pass through the meter. Manufacturer of glass tube rotameter glass tube rotameter with screwed connection, glass tube rotameter for ethanol, glass tube rotameter for ethanol in flow range 00. Its based on simple and easytounderstand flow measuring principle but is versatile in the types of fluid it.
The material of construction is normally made of glass, with a float inside that is pushed up by force offered by the upward fluid. The wide variety of float weights and meter tubes allows the glass tube variable area flowmeter fgm1190 to be matched exactly to the required flow range. Glass tube rotameter eureka variable area flow meters rotameters work on the principle of variable area. Rotameters are simple industrial flow meters that measure the flow rate of liquid or gas in a closed tube. Maxiflotm glass tube rotameter 4 kr model overview model code description remarks pipe sizes ka baseline glass tube variable area flow meter rotameter 15mm 12 100mm 4 kb glass tube rotameter without float guide rod 10mm 38 50mm 2 kc glass tube rotameter with orifice plate at the inlet 65mm 212 200mm 8. Glass tube purge rotameters are efficient and pretty effective for low flow rate indication for fluids. Va master fgm1190 glass tube variable area flowmeter abb group. In the case of glass and plastic tubes you can simply view the float position to get a reliable. Rotameters are also called purge meters and variable area flow meters.
Variable area flowmeter ariable area flowmeter rotameter. Small, 6 mm 14 tubes are suitable for working pressures up to 500 psig, but the operating pressure for a large 51 mm 2 tube may be as low as 100 psig. King instrument 7200 series rotameter rotameters instrumart. Rotameter should be designed taking care of process and technical requirements as detailed in the data sheet enclosed. The rotameter variable area flowmeter is one of the oldest and mature. Manufacturer of digital rotameter metal tube rotameter, glass tube rotameter, acrylic rotameter offered by gpc flow instruments private limited, hyderabad, telangana. Flowmeters with float series 6001 6002 steam equipments. Rotameter, metal tube rotameter variable area flow meters. It is suitable for the small or large capacity flow measuring,i.
Variable area flowmeters for gases measuring tubes in 2 sizes the flowmeters are available with glass tube lengths of 80mm and 140mm. Installation the variable area flowmeter must be installed as. Digital rotameter metal tube rotameter manufacturer from. Npt or flange, vertical or horizontal connections offer installation versatility.
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