Flow meter
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一、工作原理1、 How it works電磁流量計是根據(jù)法拉第電磁感應(yīng)定律進行流量測量的流量計。電磁流量計的優(yōu)點是壓損小，可測流量范圍大。最大流量與最小流量的比值一般為20:1以上，使用的工業(yè)管徑范圍寬，可測量DN10~DN2000范圍內(nèi)的管徑，輸出信號和被測流量成線性，精確度高，可測量電導(dǎo)率≥5μs/cm的酸、堿、鹽溶液、水、污水、腐蝕性液體以及泥漿、礦漿、紙漿等的流體流量。廣泛應(yīng)用于化工、冶金、輕紡、造紙、環(huán)保、食品、生活污水、工業(yè)污水、冷卻水、自來水廠等工業(yè)部門以及市政管理、水利建設(shè)、河···
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產(chǎn)品詳情
一、工作原理
1、 How it works
電磁流量計是根據(jù)法拉第電磁感應(yīng)定律進行流量測量的流量計。電磁流量計的優(yōu)點是壓損小，可測流量范圍大。最大流量與最小流量的比值一般為20:1以上，使用的工業(yè)管徑范圍寬，可測量DN10~DN2000范圍內(nèi)的管徑，輸出信號和被測流量成線性，精確度高，可測量電導(dǎo)率≥5μs/cm的酸、堿、鹽溶液、水、污水、腐蝕性液體以及泥漿、礦漿、紙漿等的流體流量。廣泛應(yīng)用于化工、冶金、輕紡、造紙、環(huán)保、食品、生活污水、工業(yè)污水、冷卻水、自來水廠等工業(yè)部門以及市政管理、水利建設(shè)、河流疏浚、樓宇供水計量等領(lǐng)域的流量計計量。
Electromagnetic flowmeter is based on Faraday's law of electromagnetic induction for flow measurement. The advantages of electromagnetic flowmeter are small pressure loss and wide flow range. The ratio of the maximum flow to the minimum flow is generally more than 20:1. The industrial pipe diameter range used is wide, and the pipe diameter within the range of DN 10 ~ DN2000 can be measured. The output signal is linear with the measured flow rate, and the flow rate of acid, alkali, salt solution, water, sewage, corrosive liquid, slurry, pulp, etc. with conductivity ≥ 5 μ s / cm can be measured. It is widely used in chemical industry, metallurgy, textile, papermaking, environmental protection, food, domestic sewage, industrial sewage, cooling water, waterworks and other industrial departments, as well as municipal management, water conservancy construction, river dredging, building water supply measurement and other fields.
二、產(chǎn)品特點
2、 Product features
1、轉(zhuǎn)換顯示器采用16位高性能微處理器，2×16LCD顯示，參數(shù)設(shè)定方便，編程可靠
1. The conversion display adopts 16 bit high-performance microprocessor, 2 × 16 LCD display, convenient parameter setting and reliable programming
2、雙向測量系統(tǒng)，內(nèi)裝三個積算器可分別顯示：正向流量、反向流量及正、反向流量之差的總量
2. Two way measurement system with three integrators can display the total amount of forward flow, reverse flow and the difference between positive and negative flow
3、轉(zhuǎn)換顯示器有多種輸出：電流、脈沖、數(shù)字通訊、HART、485通訊協(xié)議
3. Conversion display has a variety of output: current, pulse, digital communication, Hart, 485 communication protocol
4、適用大管徑管道，DN300—1400mm
4. Suitable for large diameter pipe, dn300-1400mm
5、傳感器本體與電極有多種材料可選
5. There are many kinds of materials for sensor body and electrode
6、體積小、重量輕、運輸、安裝方便，可實現(xiàn)不斷流維護、拆裝
6. Small size, light weight, convenient transportation and installation, can realize continuous flow maintenance, disassembly and assembly
Lining material | main performance | Maximum medium temperature | Scope of application | |
All in one | Separable type | |||
teflon（F4) | It is a kind of plastic with stable chemical properties. It is resistant to boiling hydrochloric acid, sulfuric acid, nitric acid and aqua regia, as well as strong alkali and various organic solvents. It is not resistant to the corrosion of chlorine trifluoride, high temperature chlorine trifluoride, high flow rate liquid fluorine, liquid oxygen and self oxygen. | 70℃ | 100℃ 250℃ | 1、濃酸、堿等強腐蝕性介質(zhì)。 |
Perfluoroethylene propylene（F46) | The wear resistance and negative pressure resistance of F4 are higher than that of F4. | 同上 | ||
Polyfluoroethylene（Fs) | The upper limit of applicable temperature is lower than that of polytetrafluoroethylene, but the cost is also lower. | 80℃ | ||
Polychloroprene rubber | 1. It has excellent elasticity, high breaking force and good wear resistance. 2. It is resistant to corrosion of low concentration acid, alkali and salt medium, but not to oxidation medium. | 80℃ 120℃ | 水、污水、弱磨損性的泥漿礦漿。 | |
Polyurethane rubber | 1、The wear resistance is very strong. | 80℃ | 中性強磨損的礦漿、煤漿、泥漿 | |
2、Poor corrosion resistance. | ||||
Electrode material | Corrosion resistance and wear resistance |
stainless steel 0Crl8Nil2M02Ti | It is suitable for industrial water, domestic water, sewage and other weakly corrosive media. It is suitable for petroleum, chemical, steel and other industrial sectors and municipal, environmental protection and other fields. |
Hastelloy B | It has good corrosion resistance to all concentrations of hydrochloric acid below boiling point, as well as non chlorinated acid, alkali and non oxidizing salt solution such as sulfuric acid, phosphoric acid, hydrofluoric acid and organic acid. |
Hastelloy C | It can resist the corrosion of non oxidizing acid, such as nitric acid, mixed acid, or mixed medium of chromic acid and sulfuric acid, as well as the corrosion of oxidizing salts such as FC +, Cu + or containing other oxidants, such as hypochlorite solution higher than normal temperature and seawater corrosion |
tantalum | It can resist the corrosion of seawater, various chlorides and hypochlorites, oxidizing acids (including fuming sulfuric acid), organic acids and alkalis. It is not resistant to the corrosion of pure reducing acid (such as sulfuric acid and hydrochloric acid), but if the acid contains oxidants (such as nitric acid, FC +, Cu +), the corrosion is greatly reduced. |
tantalum | It has excellent corrosion resistance and is similar to glass. In addition to hydrofluoric acid, fuming sulfuric acid and alkali, it can almost resist the corrosion of a chemical medium (including hydrochloric acid with boiling point, nitric acid and sulfuric acid below 150 ℃). In alkali; corrosion resistant. |
Platinum / titanium alloy | It is resistant to almost all chemical media, but not suitable for aqua regia and ammonium salts. |
Stainless steel coated with tungsten carbide | It is used for non corrosive and strong wear medium. |
Note: due to the variety of media, and its corrosivity is affected by complex factors such as temperature, concentration, flow rate, etc., this table is only for reference. Users should make their own choice according to the actual situation. If necessary, the corrosion resistance test of the materials to be selected, such as coupon test, should be carried out. | |
五、Flow diameter comparison table
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 |
caliber | ||||||||
10~2600 | ||||||||
Code | Installation form | |||||||
Y | Integrated | |||||||
F | Split style | |||||||
Code | Converter model | |||||||
ZA | circular | |||||||
ZB | Square (split type only) | |||||||
Code | Power supply form | |||||||
AC | （communication）220V AC 50Hz(90~245V AC 50Hz) | |||||||
DC | （communication）24V DC (20~36V DC) | |||||||
LD | Lithium battery power supply (without signal output) | |||||||
Code | ||||||||
I | ||||||||
f | ||||||||
Rs | ||||||||
H | ||||||||
C | ||||||||
Medium temperature | ||||||||
≤65℃ | ||||||||
≤120℃ | ||||||||
≤180℃(Split type only） | ||||||||
Code | Lining material | |||||||
NE | Chloroprene rubber（≤65℃） | |||||||
PVC | polyvinyl chloride（≤70℃） | |||||||
PU | Polyurethane wear resistance (≤80℃) | |||||||
PTFE | teflon（≤180℃） | |||||||
Code | Electrode material | |||||||
316L | stainless steel | |||||||
HC | Hastelloy C | |||||||
Ti | titanium | |||||||
Ta | tantalum | |||||||
Pt | 鉑 | |||||||
Warm tips: electromagnetic flowmeter selection is necessary, medium, caliber (flow range), electrode material, lining material, installation method | ||||||||
七、安裝注意事項
7、 Installation precautions
1、應(yīng)安裝在水平管道較低處和垂直向上處,避免安裝在管道的最高點和垂直向下處圖1所示；
1. It should be installed at the lower part of the horizontal pipe and vertically upward, avoiding the installation at the highest point and vertical downward position of the pipeline, as shown in Fig. 1;
2、應(yīng)安裝在管道上上升處；
2. It should be installed at the rising position of the pipeline;
3、在開口排放管道安裝,應(yīng)安裝在管道的較低處；
3. For the installation of open discharge pipeline, it should be installed at the lower part of the pipeline;
4、若管道落差超過5m時,在傳感器的下游安裝排氣閥；
4. If the pipeline drop exceeds 5m, an exhaust valve should be installed downstream of the sensor;
5、傳感器絕對不能安裝在泵的進出口處,應(yīng)安裝在泵的出口處。
5. The sensor must not be installed in the pump inlet and outlet, should be installed in the pump outlet.
