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On site metal tube float flowmeter
On site metal tube float flowmeter
On site metal tube float flowmeter
Product Overview: Metal tube float flowmeter is a commonly used flow measurement instrument in industrial automation process control. It has the chara

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◆product overview
Metal tube float flowmeter is a commonly used flow measurement instrument in industrial automation process control. It has small pressure loss and a large detection range (range ratio)10:1）It is convenient to use and can be used to measure the flow rate of liquids, gases, and vapors, especially suitable for measuring the flow rate of low velocity and low flow media.50The series metal tube float flowmeter has both local display and intelligent remote transmission types, with pointer display, instantaneous flow rate, cumulative flow rate, LCD display, upper and lower limit alarm output, cumulative pulse output, and standard two-wire system4-20mAVarious forms such as current output provide users with a wide range of choices. In addition, the instrument adopts high-qualityMCUThe microprocessor system ensures the excellent performance of the flowmeter in various application scenarios.
For many years, metal tube flowmeters have been widely favored by industries such as petrochemicals, steel, power, metallurgy, and light industry due to their excellent performance and reliability, as well as their good cost-effectiveness.
◆Structural principle
1Structure
50The series metal tube float flowmeter mainly consists of three parts
aIndicator (intelligent indicator, local indicator)
bFloat
cCone shaped measuring chamber
2Working principle
When the measured medium passes through the conical measuring tube from bottom to top, a differential pressure is generated at the upper and lower ends of the float, forming an upward force. When the upward force acting on the float is greater than the weight of the float immersed in the fluid, the float rises, and the annular gap area increases accordingly. The fluid flow velocity at the annular gap immediately decreases, and the differential pressure between the upper and lower ends of the float decreases. The upward force acting on the float also decreases until the upward force is equal to the weight of the float immersed in the fluid, and the float stabilizes at a certain height. The height of the float position corresponds to the flow rate of the measured medium. The float is equipped with magnetic steel, and when the float moves up and down with the medium, the magnetic field changes with the movement of the float.
aFor the in-situ type, the rotating magnetic steel in the in-situ indicator is coupled with the magnetic steel inside the float, causing rotation and driving the pointer to indicate the current flow rate through the dial.
bFor the intelligent type, a solid-state magnetic sensor in the intelligent indicator converts the changes in the magnetic field into electrical signals, which are then processedA/DTransformation, microprocessor,D/AOutput,LCDLCD display is used to show the size and cumulative flow of traffic.
◆main features
1.Suitable for small diameters and low flow rates
2.Reliable work, minimal maintenance, and long lifespan
3.Low requirements for downstream straight pipe sections
4.Has a wide range of traffic10:1
5.Local pointer indication is close to linear
6.Intelligent indicator withLCDLCD display, capable of displaying instantaneous and cumulative flow rates, as well as outputting pulses and alarms
7.Equipped with temperature compensation
8.There are various forms such as on-site type, remote transmission type, jacket type, explosion-proof, corrosion-resistant, etc
◆Main technical parameters
1Measurement range: water2.5～100000l/h（20℃）
2Range ratio:10:1
3Accuracy level:1.0、1.5、2.5
4Work pressure:DN15、DN25、DN50doPN4.0MPaThe maximum is10.0MPa、DN80、DN100doPN1.6MPaThe maximum is6.4Mpa
5Medium temperature:-40℃～300℃
6Medium viscosity:DN15：η<5mPa·s（F15.1～F15.3）η<30mPa·s（F15.4～F15.8）
DN25：η<250mPa·s DN50～DN150：η<300mPa·s
7Environmental temperature: LCD type:-40℃～85℃ Pointer type:-40℃～120℃
8Connection form: flange (execution standard)DIN2501Or manufactured according to the flange standard provided by the user)
9Instrument height:250mm
10Cable interface:M20*1.5
11Power supply:24VDCtwo-wire system4～20mAperhaps85～265VAC 50/60Hz(Remote transmission type)
12Alarm output: upper or lower limit instantaneous flow alarmRelay output (maximum contact capacity)5A@250VAC）Or open collector output (maximum)100mA@30VDCinternal impedance100Ω）
13Pulse output: Accumulated pulse output, minimum interval per10One pulse per second (AC type) or every50Milliseconds per pulse.
14LCD display: Dual row LCD display, displaying instantaneous flow and cumulative flow.
15Intrinsic safety explosion-proof:Exia II CT4
16Material of measuring tube:316Stainless steel (ordinary type) or lined with polytetrafluoroethylene (anti-corrosion type)
◆Selection Table for Metal Tube Float Flow Meter
code
Measurement tube structure
OW-50
Down in, up out
OW-51
Down in, up out horizontally
OW-52
Bottom horizontal in and top horizontal out
OW-53R
Right in, left out
OW-53L
Left in and right out
code
Liquid receiving material
R0
0Cr18Ni2Mo2Ti
R1
1Cr18Ni9Ti
Rp
PTFE
T1
titanium alloy
Rl
316L
code
Pipeline diameter
DN15
15
DN25
25
DN50
50
DN80
80
DN100
100
DN150
150
DN200
200
code
additional structure
not have
T
Jacket type
Z
Damping type
G
High temperature type
Y
High pressure
code
Indicator form code combination
M1
Local indicator, mechanical indication of instantaneous flow rate
M2
Power supply type, mechanical indication of instantaneous flow rate, LCD display of instantaneous/cumulative flow rate
M3
Power supply type, no mechanical indication, LCD display instantaneous/cumulative flow rate
code
Power supply mode
not have
M1 indicator only
A
220VAC， 4-20mA output
B
Battery powered, no output
C
24VDCTwo wire power supply, 4-20mA output
D
24VDCThree or four wire power supply, 4-20mA output
code
Explosion proof sign
l
Intrinsic safety iaCT5 square shell
d
Explosion proof Diibt4 enclosure shell
code
Alarm or pulse output
not have
No alarm or pulse output
K1
Upper limit alarm or one pulse output
K2
Lower limit alarm or one pulse output
K3
Upper and lower limit alarm or dual pulse output
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