LZ Series Metallic Tube Variable-Area Liquid Horizontal Flowmeter

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The LZ Series Metallic Tube Variable-Area Liquid Horizontal Flowmeter is an industrial instrument based on the variable-area measurement principle, specifically designed for continuous flow measurement of liquid media.  It is widely used in petroleum, chemical, metallurgical, power, pharmaceutical, water treatment, and other process industries. This product is based on the classic float-type variable-area measurement principle. When the liquid being measured enters the flowmeter from the inlet under pipeline pressure, the fluid flows axially along the measuring tube and pushes the float upwards. As the float rises, the annular flow area formed between the float and the inner wall of the conical measuring tube gradually increases until the upward fluid force on the float reaches a dynamic equilibrium with its weight, buoyancy, and resistance. The LZ series features an optimized internal design for float guidance and stability, ensuring that even when gravity is perpendicular to the flow direction, the float maintains good central positioning and smooth movement, thereby reducing friction, vibration, and measurement errors.

Main Technical Parameters

Measure RangeWater (20℃)(2.5-10000) L/h

Air (20℃, 1.101325MPa)(0.07-750) m3/h

Range Ratio10:1
Accuracy Grade±1.5%  ±2.5%
Fluid Working PressureDN15-DN50: 4.0MPa

DN80-DN150: 1.6MPa

Working Pressure of Couting1.6MPa
Fluid Working Temperature-80℃-+200℃(PTFE≤+85℃)(For Model PTFE≤+85℃)
Connection Type(Flange connection, Threaded connection or Tri-clamp connection flange refer to standard GB/T9119; ANSI 150lbs、300lbs; HG20592-20635; Other standard flange can be made to the user requirement.)
Environment Temperature-25℃-+55℃
Medium ViscidityDN15≤5mPa.S;

DN25-DN100≤250mPa.S

Electricity Singal OutputOutput Signal: ( 4-20mA )
Linear Accuracy: 1%
Temperature Influence: 0.5%/10℃
Power Supply : (13-30 ) V DC
Power Supply Consume: ≤250mW
Restrict AlarmPower Supply: 24 ( ±10%) VDC
Power Loss: ≤3W
Working Temperature: -25℃-+60℃
Explosion-proof GrEXIbllCT5

To ensure flowmeter working stability, it should be assured that the working pressure is not less than double of max loss of pressure when the flowmeter used to measure liquid; when you measure medium is air, it should be assured that the working pressure is not less than five times max loss of pressure:2.Above measuring range is for reference only, you can select other measuring ranges according to range ratio 10:1:3.Flowmeler can be specially made for you as per medium density viscosity, temperature pressure and other parameters you supply.

 

■LZ-Outline and installing dimension(Horizontal)

DNHL
15250160
20250160
25250160
32250160
40250160
50250160
65250160
80250160
100250160
125250160
150300160

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Line add : @intech2000

Email : intech@intech2000.com

Phone : 02-440-1853

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