Metal Rotameter Flow Meters are a type of variable area flow measurement instrument commonly used in industrial automation process control. It has the characteristics of small size, large detection range and easy use. It can be used to measure the flow of liquids, gases and steam. It is especially suitable for medium flow measurement with low flow rate and small flow rate.
The Rotameter Flow Meters produced by our Sino-Inst support the customization of DN15~DN200. Can be configured with explosion-proof, intelligent transmitter, output 4-20mA signal, HART protocol. Two alarm outputs can be configured.
Features
Rotameter Flow Meters Technical Parameters
| Measuring range | Water (20℃): 1-200000 L/h Air (20℃, 0.1013MPa): 0.03~4000m³/h |
| Turndown | Standard type 10:1, special type 20:1 |
| Accuracy | Gas 2.5%FS; Liquid 1.5%F.S |
| Pressure Level | Standard type: DN15-N50 4.0MPa; Special type: DN15-N50 25 MPa; The pressure rating of the jacket is 1.6MPa. For special models, please consult and confirm before selecting and ordering. |
| pressure loss | 2kpa-20kpa |
| Medium temperature | Standard type: -40℃~100℃; PTFE: 0℃~120℃; High temperature type: 100℃~450℃; |
| Medium viscosity | DN15: η<5mPa.s(F15.1-F15.3) η<30mPa.s (F15.4-F15.8) DN25: η<30mPa.s DN50-DN150: η<30mPa.s |
| ambient temperature | Remote transmission type: 40℃~185℃ (the liquid crystal will not be damaged), the liquid crystal normally works at -30℃~80℃; local pointer type: -40℃~100℃ |
| Connection Type | Connection method: flange connection standard HG20592-2010, DIN 2501 standard flange; or produced according to customer requirements; Threaded connection: produced according to diameter or customer requirements; Sanitary clamp connection: produced according to diameter or customer requirements; |
| Cable interface | The flameproof type is 1/2NPT internal thread; other M20*1.5 internal thread; |
| Power supply | Standard type: 24VDC two-wire system 4-20mA (12VDC-32VDC); Alarm type: 24VDC three-wire system 4-20mA (18VDC-28VDC); AC type: 85-265VAC50Hz; Battery type: 3.6V, 7.5AH battery, used continuously for three years; |
| Load characteristics | Two-wire system: RLmax=50*(-12)Ω=600Ω@24V Alarm type: the maximum load resistance is 200Ω AC type: the maximum load resistance is 200Ω |
| Alarm Output | Upper or lower limit instantaneous flow alarm; Switch quantity alarm; Relay output; |
| LCD | Instantaneous flow rate display value range: 0-50000 (with decimal point) Accumulated flow display value range: 0-99999999 (with decimal point) automatic reset |
| Protection level | IP65 |
Flow Range
| Water(L/h) | Air | |||
| Nomirnal Diameter | Rotator No | Material RO.R1,R2,TI,RL | Materlal PTFE | Nm³/h(under standard state) |
| DN15 | F15.0 F15.1 F15.2 F15.3 F15.4 F15.5 F15.6 F15.7 F15.8 F15.9 F25.0 | 1～10 6～16 2.5～25 4.0～40 6.3～63 10～100 16～160 25～250 40～400 63～630 63～630 | 1.6～16 2.5～25 4.0～40 6.0～60 10～100 16～160 25～250 40～400 | 0.03～0.3 0.05～0.5 0.07～0.7 0.11～1.1 0.18～1.8 0.28～2.8 04～4 0.7～7 1.0～10 1.6～16 3.0～30 |
| DN25 | F25.1 F25.2 F25.3 F5 | 100～1000 160～1600 200~2000 250～2500 320～3200 | 63～630 100～1000 160～160 | 3.0～3 4.5～45 7.0～7 |
| DN50 | F25.6 F25.7 F25.8 F50.0 F50.1 F50.2 F50.3 F50.4 F50.5 F80.0 F80.1 | 400～4000 500~5000 630～6300 500～5000 630～6300 1000～10000 1600～16000 2000～20000 2500～25000 1600～16000 2000～20000 | 200～2000 250～2500 320～3200 400～4000 630～6300 1000～10000 1600～16000 | 12～120 18～180 18～180 25～250 40～400 63～630 |
| DN80 | F80.2 F80.3 F80.4 F100.0 | 2500～25000 4000～40000 6300～63000 4000～40000 | 1600～16000 2500～2500 4000～4000 | 70～700 120～1200 180～1800 |
| DN100 | F100.1 F100.2 F100.3 F150.0 | 6300～630000 8000～80000 1000～10000 8000～80000 | 4000～40000 6000～60000 8000～80000 | 180～1800 300～3000 |
| DN150 | F150.1 F150.2 F200.0 | 10000～100000 15000～150000 15000～150000 | 8000～80000 | 300～3000 |
DN200 | F200.1 | 20000～200000 | It can be DN20,DN32,DN40,DN65,DN125 for special. Please contact and consultant with the manutadurer | |
Structure of rotameter flow meter
This series of metal tube rotameter flow meter mainly consists of two parts: measuring tube and indicator.
The measuring tube includes tapered tube, guide, stopper, float and other components.
The indicator includes a magnetic follow-up system, pointers, dials, circuits and other components. Divided into local type and intelligent type.
For the local type, the following magnet in the local indicator is coupled with the magnet in the float to rotate, and at the same time the pointer is driven to indicate the flow rate at this time through the dial.
For the intelligent type, the following magnet in the intelligent indicator is coupled with the magnet in the float to cause rotation. At the same time, it drives the sensing magnet and pointer. The changes in the magnetic field are converted into electrical signals through a magnetic sensor, which is then processed by AD conversion, digital filtering, temperature compensation, microprocessor processing, D/A output, and LCD display to display the instantaneous flow and accumulated flow.
rotameter flow meter working principle
The structure of a rotameter flow meter is a vertical tapered metal tube whose cross-sectional area gradually expands from bottom to top. There is a rotor (or float) made of metal or other materials that can rotate freely. The fluid to be measured enters from the bottom of the metal tube and flows out from the top.
When the fluid flows through the vertical tapered tube from bottom to top, the rotor is acted upon by two forces: one is the vertical upward pushing force, which is equal to the pressure difference generated by the fluid flowing through the annular cross-section between the tapered tube and the rotor.
The other is the vertical downward net gravity, which is equal to the gravity on the rotor minus the buoyancy force of the fluid on the rotor. When the flow increases so that the pressure difference is greater than the net gravity of the rotor, the rotor rises. When the pressure difference is equal to the net gravity of the rotor, the rotor is in equilibrium. That is to stay in a certain position.
A reading is engraved on the outer surface of the metal tube. According to the dwell position of the rotor, the flow rate of the measured fluid is read.
The rotameter is a variable cross-section constant pressure differential flowmeter. The pressure difference acting on the upstream and downstream of the float is a constant value. The annular cross-sectional area between the float and the tapered tube changes with the flow rate. The position of the float in the tapered tube reflects the flow rate.
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Metal tube rotameter is a common flow measurement instrument that is widely used and can be used to measure media such as liquids, gases, and steam. It is a flow meter with simple structure, high precision and strong reliability, so it can be used in various occasions.
For example, in high-temperature, high-pressure and corrosive media environments, high-temperature and corrosion-resistant materials can be used to manufacture metal tube rotor flowmeters to ensure long-term stable operation.
The metal tube rotameter produced and supplied by our Sino-Inst is simple to install and easy to operate. It does not require complicated maintenance and upkeep, reducing operation and maintenance costs and improving work efficiency. Moreover, it can also cooperate with various control systems to realize automatic control and improve the degree of automation of production.
If you need to purchase Rotameter Flow Meters-Metal Variable Area Flow Meters, or have related technical questions, please feel free to contact us.
Rotameter Flow meters | Manufacturer Supply-Best Price
Metal Rotameter Flow Meters are a type of variable area flow measurement instrument commonly used in industrial automation process control. It has the characteristics of small size, large detection range and easy use. It can be used to measure the flow of liquids, gases and steam. It is especially suitable for medium flow measurement with low flow rate and small flow rate.
Product SKU: Rotameter Flow Meters-Metal Variable Area Flow Meters
Product Brand: Sino-Inst
Product Currency: USD
Product Price: 299
Price Valid Until: 2029-09-09
Product In-Stock: InStock
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