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Flow Meter
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| Place of Origin | CHINA |
| Brand Name | BEITE |
| Certification | CE ISO |
Working Principle
A glass tube flow meter is an instrument commonly used to measure the flow of gas or liquid, especially in laboratories and industrial applications. Its working principle is based on the movement of a float and mainly includes the following steps:
1. **Fluid enters the glass tube**: The fluid (gas or liquid) enters the glass tube from the lower end of the flow meter, and the structure of the flow meter is usually a vertical glass tube.
2. **Float rises**: When the fluid flows through the glass tube, it pushes the float. The shape of the float is usually conical or spherical. As the flow rate increases, the flow pressure of the fluid also increases, causing the float to rise.
3. **Float position and flow relationship**: The position of the float is proportional to the flow rate. The greater the flow rate, the higher the float rises; the smaller the flow rate, the float falls. The position of the float indicates the flow rate through the scale lines on the glass tube.
4. **Stable equilibrium state**: At a certain flow rate, the float will reach a stable position, at which time the rising float force and the sinking float force are balanced. At this time, the scale value corresponding to the height of the float is the flow rate.
5. **Scale and reading**: There are scale lines on the glass tube of the flow meter, which can directly read the height of the float and then get the flow value. For gas and liquid flow meters, the scale will be different, usually taking into account the influence of temperature and pressure.
Advantages:
- Simple structure and intuitive operation.
- Wide range of applications, can measure a variety of fluids.
- Can clearly display the flow rate and is relatively easy to maintain.
In summary, the glass tube flow meter is a measurement tool that directly displays the flow rate by driving the float up or down through the flow of the fluid. It is simple to operate and suitable for many different fluids.
Principle and structure
Flowmeter consists of a subuliform glass tube expanding from bottom to top and a floater moving up and down with the change of flow of fluid (Fig 3). When fluid flows through subuliform from bottom to top, the lift force S produced by fluid kinetic energy and the floatage A of fluid make floater rise. When the sum of lift force and floatage is equal to the gravity G of floater, floater is in a stable state and located at a height and the scale on subuliform glass tube indicates the flow of fluid.
The position of floater in flowmeter is shown in Fig 4.
Outline
LZB/LZG series of glass rotameter is widely applied in chemical engineering, petroleum, light industry, medicine, environment protection, food, measurement and test, scientific research and other departments and used to measure the flows of single-phase non-pulsating fluid (liquid or gas).
LZB/()F/LZJ-()F series of corrosion-resistant glass rorameter has a strong corrosion resistance, can be used to measure the flows of acid(except for hydrofluoric acid), alkaline, oxidizing agent and other corrosive gas or liquid and is suitable for chemical engineering, pharmacy, paper making, sewage treatment and other industries.
Appearance and installation size
|
Drift diameter DN |
A | B | C | D | E | Type of connection |
| 4 | 178 | 204 | 230 | 10 | 38.5x33(front) | Flexible pipe |
| 6 | 178 | 204 | 230 | 10 | 42x33(front) | Flexible pipe |
| 10 | 95 | 208 | 244 | 12 | 45x40(front) | Flexible pipe |
| 15 | 115 | 65 | 470 | 15 | 4-14 | Flange |
| 25 | 110 | 85 | 470 | 25 | 4-14 | Flange |
| 40 | 145 | 110 | 570 | 40 | 4-18 | Flange |
| 50 | 160 | 125 | 570 | 50 | 4-18 | Flange |
| 80 | 185 | 150 | 660 | 80 | 4-18 | Flange |
| 100 | 205 | 170 | 660 | 100 | 4-18 | Flange |
Notes: flange standards GB/T119-2000
DN(15-50), DN(125-150) PN1.0MPa
DN(80-100) PN0.6MPa
Materials of parts contacting measured fluid
Table 2
| Part | Model | |||||
|
LZB-4, 6, 10 LZJ-6, 10 |
LZB-4F LZJ-6F, 10F |
LZB-15, 25, 40 | LZJ-15, 25, 40, 50(F) | LZB-50, 80, 100 | LZB-80, 100(F) | |
| Floater | 304 stainless steel | Agate | 304 stainless steel | External fluoroplastics | 304 stainless steel | External fluoroplastics |
| Foundation support | HPb59-1 brass | 304 stainless steel | Polypropylene plastics inside cast iron | Fluoroplastics inside cast iron | Antiseptic paint inside cast iron | Fluoroplastics inside cast iron |
| Arresting device | Polypropylene plastics | fluoroplastics | Polypropylene plastics | fluoroplastics | Cast iron | Fluoroplastics |
| Seal ring and gasket | Chemigum | fluororubber | Chemigum | fluororubber | fluororubber | Fluororubber |
| Guide rod | 304 stainless steel | 304 stainless steel | External fluoroplastics | |||
FAQ
1. Q: What information need to be provided to choose the suitable model?
A: Application field, Nominal pressure ,Medium & medium temperture , Power supply , Output,
Flow range, Accuracy, Connection and other parameters.
2. Q: Are you a trade company or a manufacturer?
A: We are an ISO approved manufacturer specialized in level and flow measuring instruments.
OEM & ODM service are available. Welcome to visit us in China.
3. Q: What is your MOQ?
A: To start our cooperation, sample order is acceptable.
4. Q: What is your delivery date for the Intelligent Mini Micro Turbine Fuel Oil Diesel Flow Meter?
A: The delivery date is about 3-15 working days after receipt of payment.
5. Q: What is your payment terms?
A: We support T/T, PayPal ,Western Union.
For mass production order, it is 30% deposit in advance and 70% balance before shipment.
6. Q: Do you have a warranty for the Flow Meter?
A: Yes, we have the warranty of 12 months.
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