Metal Tube Rotameter

The Metal Tube Rotameter uses the variable area measurement principle. The intelligent metal tube float flowmeter has a local display type and an intelligent remote transmission type, with the transmitter. Metal Tube Rotameter can be used to measure the flow of liquid, gas, and steam. It is especially suitable for medium flow measurement with a low flow rate and small flow.

Metal tube rotameter with transmitter

Metal tube rotameter with transmitter is also called digital rotameter. All-metal structure, there are indicator type, electric remote transmission type, corrosion-resistant type, high voltage type, jacket type, explosion-proof type.

Electric remote transmission, explosion-proof design. Explosion-proof mark Exd Ⅱ CT6. Optional HART protocol function. DC24V power supply, on-site pointer indicates instantaneous flow. Digital display instantaneous and cumulative flow. Two-wire system 4~20mA output. There are 4 buttons on the panel to view and modify internal parameters.

Metal tube rotameter Features

  • Suitable for flow measurement of small-diameter and low-velocity media;
  • Reliable work. Low maintenance and long life;
  • The requirements for straight pipe sections are not high;
  • Wider flow ratio 10:1;
  • Two-line large LCD display. Optional on-site instantaneous/cumulative flow display. Single-axis sensitive indication with backlight;
  • Non-contact magnetic coupling transmission.
  • All metal structure, metal tube rotor flowmeter is suitable for high temperature, high pressure and strong corrosive media;
  • It can be used in flammable and explosive hazardous situations;
  • Optional two-wire system, battery, AC power supply mode;
  • Multi-parameter calibration function. With data recovery, data backup and power failure protection functions.

Metal tube rotameter Specifications

PerformanceTechnical parameter
Measurement rangeWater (2.5~150000) L/h; air (0.07~2000) m3/h (at 0.101325 Mpa, 20℃).
level of accuracy1.5 and 2.5 grades (PTFE).
Turndown ratio10:1 or special 5:1
Nominal pressureDN15~50≤4.0MPa; DN65~150 ≤1.6MPa.
Medium temperature-80℃~200℃ (with F46 flowmeter lining 0℃~80℃)
Liquid medium viscosityDN15<5mPa•s; DN25~150≤250mPa•s
Output4-20mA two-wire system
Pure resistive load<680Ω
Temperature effect<5MA/K
Ambient temperature-25℃~55℃
total heightDN15~DN150 (generally 250mm)

The metal tube float flowmeter is mainly composed of two parts: the measuring tube and the indicator. The measuring tube includes a conical tube or orifice, guide, stopper, float, and other components. The indicator includes a magnetic follower system, pointer, dial, circuit, and other components.

The measured medium flows through the measuring tube from bottom to top. The upper and lower ends of the float generate differential pressure to form a rising force. When the rising force of the float is greater than the weight of the float immersed in the flowing fluid, the float rises, and the annular gap area increases. Annular gap When the fluid velocity drops rapidly, the differential pressure at the upper and lower ends of the float decreases. The ascending force acting on the float decreases. Until the ascending force balances with the weight of the float immersed in the fluid, the float stabilizes at a certain position. The height of the float is that Corresponds to the size of the measured medium flow.

The float has built-in magnetic steel. When the float moves up and down with the medium, the magnetic field changes with the movement of the float.

a. For the in-situ type, the follow-up magnet in the in-situ indicator is coupled with the magnet in the float. It rotates and drives the pointer at the same time, and the current flow rate is indicated by the dial.

b. For the smart type, the follower magnetic steel in the smart indicator is coupled with the magnetic steel in the float. It rotates and drives the sensing magnetic steel and pointer at the same time. The magnetic field change is converted into an electrical signal through a magnetic sensor. A/D conversion, digital filtering, temperature compensation. Microprocessor processing, D/A output. LCD liquid crystal displays the instantaneous flow and cumulative flow.

Extended reading: Beginner’s Guide: Variable area flow meter

Rotameter is a common type of flowmeter. The flowmeter is an industrial instrument for measuring the flow of liquids, gases, and other media. There are many types of flow meters. Such as electromagnetic flowmeter, turbine flowmeter, vortex flowmeter, and so on. Different flow meters have different measurement principles. For example, the electromagnetic flowmeter is based on the principle of electromagnetic induction. The rotameter is a device that estimates the flow rate by measuring the (position) of the rotating parts installed in the DC pipeline.

Extended reading: How does a rotameter work

The flow detection element of the float flowmeter is composed of a vertical tapered tube that expands from bottom to top and a float group that moves up and down along the axis of the tapered tube. Below, I will give you a specific introduction to the classification of rotameters.

Glass rotameter:

Glass rotor flowmeters are mainly used in various departments such as the chemical industry, petroleum, light industry, medicine, fertilizer, chemical fiber, food, dyes, environmental protection, and scientific research. Used to measure the flow of single-phase non-pulsating (liquid or gas) fluids. The anti-corrosion glass rotor flowmeter is mainly used for the detection of corrosive liquid and gas medium flow. Such as strong acid, strong acid, oxidant, strong oxidizing acid, organic solvent, and other corrosive gas or liquid medium flow detection.

Plastic tube rotameter:

The main parts such as the liquid plastic tube rotameter cone tube are made of AS, ABS plastic. Has relatively good corrosion resistance. The product also has the characteristics of reasonable structure, small size, lightweight, and the tapered tube is not easily broken. The plastic tube rotor flowmeter can be widely used in chemical, environmental protection, food, and other industrial sectors.

Plexiglass rotameter:

Plexiglass rotameter is divided into panel type plexiglass rotameter and pipeline type plexiglass rotameter.

Plexiglass rotameter also has the characteristics of high transparency, intuitive reading, not easy to break, lightweight, long life, and convenient installation and connection. However, the tapered glass tube of plexiglass cannot be used for organic solvents (such as trichloroethylene, dichloroethane).

Metal tube rotameter:

Metal tube rotameter is divided into on-site pointer indication type and remote transmission type.

Metal float flowmeter is a kind of flow measuring instrument commonly used in industrial automation process control. It has the characteristics of small pressure loss, large detection range (range ratio 10:1), and convenient use. It can be used to measure the flow of liquid, gas, and steam. It is especially suitable for medium flow measurement with low flow velocity and small flow.

The metal float flowmeter has a local display type and an intelligent remote transmission type. With pointer display. Instantaneous flow, cumulative flow, liquid crystal display. Upper and lower limit alarm output. Cumulative pulse output, standard two-wire 4-20mA current output, and other forms. Provide users with a very wide choice of space. In addition, the instrument uses a high-quality MCU micro-processing system. Ensure the excellent performance of the flowmeter in various applications.

Extended reading: Beginner’s Guide: Variable area flow meter

Metal tube rotameter pdf

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Metal Tube Rotameter price

Sino-Inst offers over 30 Metal Tube Rotameter products. About 50% of these are for liquids. 40% are for gas. At best price.

You can refer to the product price of the following Rotameter flow meter price:

MMetal Tube Rotameter
Pipe size 1/2 inch
Medium: oxygen
FOB Price: USD 281.50/pc

A wide variety of Metal Tube Rotameter options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Rotameter flow meters, located in China.

The top supplying country is China (Mainland), which supply 100% of the Rotameter flow meter respectively.

Sino-Inst sells through a mature distribution network that reaches all 50 states and 30 countries worldwide. Metal Tube Rotameter products are most popular in Domestic Market, Southeast Asia, and Mid East.

You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.

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Please provide your measurement parameters or details. Sino-Instrument support customer customization and OEM
Digital Metal Tube Rotameter | Manufacturer-Best price

The Metal Tube Rotameter uses the variable area measurement principle. The intelligent metal tube float flowmeter has a local display type and an intelligent remote transmission type, with the transmitter. Metal Tube Rotameter can be used to measure the flow of liquid, gas, and steam. It is especially suitable for medium flow measurement with a low flow rate and small flow.

Product Brand: Sino-Inst

Product Currency: USD

Product Price: 250

Price Valid Until: 2029-09-09

Product In-Stock: InStock

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