Products
Tap water flow meter working principle:
Tap water flowmeter also known as (electromagnetic flowmeter) is a kind of inductive instrument according to Faraday's law of electromagnetic induction to measure the volume flow of conductive media in the pipe, the use of single-chip embedded technology to realize the digital excitation, and at the same time in the electromagnetic flowmeter using CAN field bus, the technology has reached a high level in China. In addition to measuring the general flow of conductive liquids, but also can measure the liquid-solid two-phase flow, high viscosity liquid flow and salts, strong acid, strong alkali liquid volume flow. Widely used in chemical industry, environmental protection, metallurgy, medicine, papermaking, water supply and drainage and other industries.
Product features:
There is no moving parts in the pipeline, no flow-retarding parts, and there is almost no additional pressure loss in the measurement.
Measurement results have nothing to do with flow distribution, fluid pressure, temperature, density, viscosity and other physical parameters.
In the field according to the user's actual need to modify the range online.
High-definition backlit LCD display, full Chinese menu operation, easy to use, simple operation, easy to learn and understand.
SMD devices and surface mount (SMT) technology, high circuit reliability.
The use of 16-bit embedded microprocessor, fast computing speed and high precision, programmable frequency low-frequency rectangular wave excitation, improving the stability of flow measurement.
All-digital processing, anti-interference ability, reliable measurement, high precision, flow measurement range up to 150: 1
Ultra-low EM1 switching power supply, applicable to a wide range of power supply voltage changes, good anti-EMC performance.
With RS485, RS232, Hart and Modbus digital communication signal output.
With self-checking and self-talking off function, provide sensor non-linearity correction function.
Power failure protection, flowmeter operation results and user-set parameters will not disappear after power failure, EEPROM can protect the set parameters and cumulative value.
| Caliber mm | Flow range m³/h | Caliber mm | Flow range m³/h |
| DN10 | 0.16~2.5 | DN400 | 250～4000 |
| DN15 | 0.4~6 | DN500 | 400～6000 |
| DN20 | 0.6～12 | DN600 | 600～10000 |
| DN25 | 1.0～16 | DN700 | 800～12000 |
| DN32 | 1.6~25 | DN800 | 1000～16000 |
| DN40 | 2.5～40 | DN900 | 1200～20000 |
| DN50 | 4.0～60 | DN1000 | 1600～25000 |
| DN65 | 6.0～120 | DN1200 | 2500～30000 |
| DN80 | 10～160 | DN1400 | 3000～50000 |
| DN100 | 16～250 | DN1600 | 3000～60000 |
| DN125 | 25~400 | DN1800 | 5000～60000 |
| DN150 | 40～600 | DN2000 | 6000～100000 |
| DN200 | 60～1000 | DN2200 | 1367.78～136778.4 |
| DN250 | 100～1600 | DN2400 | 1627.78～162777.6 |
| DN300 | 160～2500 | DN2600 | 1910.38～191037.6 |
| DN350 | 200～3000 | DN2800 | 2306.56 ~ 236062.8 |
Product Selection
| model number | caliber |
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| CH-LEL | 10~2600 | |||||||
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nicknames | Installation form |
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| Y | all-in-one | |||||||
| F | split | |||||||
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| ZA | orbicular | |||||||
| ZB | Square (split only) | |||||||
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nicknames | Type of power supply | ||||||
| AC | 220V AC 50Hz(90~245V AC 50Hz) | |||||||
| DC | 24V DC (20~36V DC) | |||||||
| LD | Lithium battery powered (without signal output) | |||||||
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Medium temperature | ||||||
| ≤65℃ | ||||||||
| ≤120℃ | ||||||||
| ≤180℃(Split type only) | ||||||||
| nicknames | Lining Material | |||||||
| NE | neoprene（≤65℃） | |||||||
| PVC | （≤70℃） | |||||||
| PU | (≤80℃) | |||||||
| PTFE | （≤180℃） | |||||||
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nicknames | Electrode Material | ||||||
| 316L | stainless steels | |||||||
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| Warm tips: flowmeter selection must, media, caliber (flow range), electrode material, lining material, installation requirements | ||||||||
| Electromagnetic flow meter | ||
| vantage | drawbacks | |
| 1 | There are no moving parts and no throttling parts in the measuring tube to impede the flow of fluid, which does not cause any additional pressure loss when the fluid passes through the meter. | It can only measure the liquid flow of conductive media, not the flow of non-conductive media |
| 2 | Electromagnetic flow meters can be used to measure the flow of other electrically conductive liquids after calibration with water only. | Cannot be used to measure gases, vapors, or liquids containing large quantities of gases. |
| 3 | Their range ratios can be up to 20:1, and some even up to 100:1 range ratios. | The medium in the pipe must be full, and cannot be measured out of a full pipe. |
| 4 | No mechanical inertia, sensitive response, can measure instantaneous pulsating flow, positive and negative direction of flow | Can only be measured above DN10 pipe, not applicable to small diameter |
| 5 | Measure the flow of corrosive media, spoiled media and suspended liquid-solid two-phase flow. | Cannot measure hydrofluoric acid media |
1, should be installed in the horizontal pipeline lower and vertically upward, avoid installation in the pipeline *** point and vertical downward;
2、It should be installed at the rising place on the pipeline;
3, in the open discharge pipeline installation, should be installed in the lower part of the pipeline;
4、If the pipeline drop is more than 5m, an exhaust valve should be installed downstream of the sensor;
5, should be installed downstream of the sensor control valves and shut-off valves, and should not be installed in the sensor upstream;
6, the sensor *** can not be installed in the pump inlet and outlet, should be installed in the pump outlet.
