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Irrigation water flow meter for farmland, water pump outlet meter
Product description: SP-LDE agricultural irrigation water flow meter, pump outlet meter based on Faraday's law of electromagnetic induction
Product details
Product Description:
SP-LDE agricultural irrigation water flow meter, pump outlet meterBased on Faraday's law of electromagnetic induction. The measuring tube of the flowmeter is a non-magnetic alloy short tube lined with insulating material. Two electrodes are fixed on the measuring tube by passing through the tube wall along the diameter direction. The electrode tip is basically flush with the inner surface of the lining. When the excitation coil is excited by two pulse waves, a working magnetic field with a magnetic flux density of B will be generated in the direction perpendicular to the axis of the measuring tube. At this point, if a fluid with a certain conductivity flows through the measuring tube. Induce an electromotive force E by cutting the magnetic field lines. The electromotive force E is proportional to the magnetic flux density B. Measure the product of the inner diameter d of the tube and the average flow velocity v. The electromotive force E (flow signal) is detected by the electrode and sent to the converter through a cable.
Description:
SP-LDE series agricultural irrigation water flow meter, pump outlet meterIts all Chinese electromagnetic converter core adopts a high-speed central processing unit. The calculation speed is very fast, the accuracy is high, and the measurement performance is reliable. The converter circuit design adopts international advanced technology, with an input impedance of up to 1015 ohms, a common mode rejection ratio of better than 100db, and a suppression ability of better than 90db for external interference and 60Hz/50Hz interference. It can measure fluid medium flow rates with lower conductivity. The sensor adopts non-uniform magnetic field technology and a special magnetic circuit structure, which makes the magnetic field stable and reliable, and greatly reduces the volume, reduces repetition, and makes the flowmeter small and flow oriented.
Irrigation water flow meter for farmland, water pump outlet meterDetermination of lining material:
|
Lining material |
name |
symbol |
performance |
Maximum operating temperature |
Suitable for liquids |
|
rubber |
chloroprene rubber |
CR |
Moderate wear resistance, resistant to corrosion from low concentrations of acid, alkali, and salt |
＜60℃ |
Tap water, industrial water, seawater |
|
polyurethane |
PU |
Excellent wear resistance, but poor acid and alkali resistance |
＜60℃ |
Pulp, slurry and other slurries |
|
|
Fluoroplastic |
PTFE |
F4 or PTFE |
The chemical properties are very stable and resistant to corrosion from boiling hydrochloric acid, sulfuric acid, aqua regia, and concentrated alkali |
＜160℃ |
Highly corrosive acid-base salt liquids |
|
Translation of perfluoroethylene propylene: |
F46 or FEP |
Chemical properties equivalent to F4 |
＜120℃ |
Corrosive acid-base salt liquids |
|
|
Tetrafluoroethylene and ethylene copolymer |
F40 or ETFE |
Chemical properties equivalent to F4 |
＜120℃ |
Corrosive acid-base salt liquids |
|
|
plastics |
polyethylene |
PO |
Corrosion resistance to dilute acids, alkalis, and salts |
＜60℃ |
Wastewater containing acid, alkali and salt liquids |
|
pps |
PPS |
Corrosion resistance to dilute acids, alkalis, and salts |
＜100℃ |
Wastewater containing acid, alkali and salt liquids |
application area
Due to its unique advantages, it is widely used in industrial fields such as chemical fiber, food, papermaking, sugar production, mining and metallurgy, water supply and drainage, environmental protection, water conservancy and hydraulic engineering, steel, petroleum, pharmaceuticals, etc. It is used to measure the volume flow rate of various acid, alkali, salt solutions, mud, slurry, pulp, coal water slurry, corn slurry, fiber slurry, grain slurry, lime milk, sewage, cooling raw water, water supply and drainage, salt water, hydrogen peroxide, beer, wort, various beverages, black liquor, green liquid and other conductive liquid media.
Irrigation water flow meter for farmland, water pump outlet meterPerformance parameters:
|
Nominal diameter DN |
10,15,20.25,32,40,50,65,80,100,125,150,200,250,300,350,400,500,600……. .1800 |
|
Nominal pressure Mpa |
0.6,1.0，1.6，2.5，4.0MPa |
|
Process connection |
Flange connection, flange standard: GB/T9119-2000 |
|
structural style |
Integrated (IP65), Split (IP65 and IP68) |
|
Lining material |
Polytetrafluoroethylene (≥ DN25), chloroprene rubber (≥ DN65), F46， Polyurethane, |
|
Electrode material |
Platinum, Platinum, Hastelloy, Titanium, 316L, Tungsten Carbide |
|
Measurement tube material |
304 stainless steel |
|
Shell and flange materials |
Carbon steel (standard), stainless steel (non-standard customized) |
|
Fluid temperature |
≤180℃ |
|
Explosion proof sign |
Not explosion-proof |
|
accuracy class |
Level 0.5 (within the range of 0.3m/s to 10m/s) |
|
repeatability |
0.15% |
|
Measurable flow velocity range |
0.05m/s～12m/s |
|
Effective measurement of flow velocity range |
0.3m/s to 10m/s (accuracy level 0.5) |
|
power supply |
18-36VDC or 85-265VAC, power: less than 8W |
|
output |
4-20mA， Frequency output (0-10KHZ), pulse equivalent |
|
Excitation method |
Three amplitude low-frequency rectangular wave excitation and high-frequency excitation |
|
exciting current |
160mA |
|
Require the minimum conductivity of the medium |
≥0.5μs/cm2 |
|
electrical interface |
M18×1.5 |
|
protection grade |
IP65 (one-piece, split type), IP68 (split type) |
|
Grounding method |
Grounding ring (user specified) or grounding electrode, pipeline grounding |
|
Display mode |
Display screen resolution FSTN mode 128 × 64 |
|
Power outage data storage time |
Power off memory EEPROM, the set parameters and flow accumulation data will not be permanently lost after power failure |
|
mean time between failures |
MTBF=30000h |
Determination of instrument diameter:
|
Inner diameter (mm) |
10 |
15 |
20 |
25 |
32 |
40 |
50 |
65 |
|
Qmin（m3/h） |
0.05 |
0.1 |
0.3 |
0.4 |
0.8 |
1.2 |
2 |
3 |
|
Qmax（m3/h） |
3.5 |
8 |
15 |
22 |
35 |
55 |
95 |
150 |
|
Inner diameter (mm) |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
350 |
|
Qmin（m3/h） |
5 |
8 |
12 |
18 |
25 |
35 |
50 |
60 |
|
Qmax（m3/h） |
220 |
350 |
550 |
800 |
1400 |
2200 |
3200 |
4500 |
|
Inner diameter (mm) |
400 |
450 |
500 |
550 |
600 |
700 |
800 |
900 |
|
Qmin（m3/h） |
80 |
120 |
180 |
230 |
300 |
400 |
500 |
600 |
|
Qmax（m3/h） |
5500 |
7500 |
9000 |
11000 |
13000 |
16600 |
21700 |
27468 |
|
Inner diameter (mm) |
1000 |
1100 |
1200 |
1400 |
1600 |
1800 |
2000 |
2200 |
|
Qmin（m3/h） |
800 |
1000 |
1200 |
1600 |
2100 |
2700 |
3300 |
4000 |
|
Qmax（m3/h） |
33900 |
41000 |
48800 |
66400 |
86800 |
109000 |
135000 |
164000 |
Irrigation water flow meter for farmland, water pump outlet measurement spectrum
| model | caliber | |||||
| SP-LDE | 15~2600 | |||||
| code | Electrode material | |||||
| K1 | 316L | |||||
| K2 | HB | |||||
| K3 | HC | |||||
| K4 | titanium | |||||
| K5 | tantalum | |||||
| K6 | platinum alloy | |||||
| K7 | Stainless steel coated with tungsten carbide | |||||
| code | Lining material | |||||
| C1 | Polytetrafluoroethylene (F4) | |||||
| C2 | Perfluoroethylene propylene (F46) | |||||
| C3 | Polyfluoroethylene (FS) | |||||
| C4 | Polyvinyl rubber | |||||
| C5 | polyurethane rubber | |||||
| code | function | |||||
| E1 | Level 0.3 | |||||
| E2 | Level 0.5 | |||||
| E3 | Level 1 | |||||
| F1 | 4－20Madc, Load ≤ 750 Ω | |||||
| F2 | 0-3kHz, 5V active, variable pulse width, output high-end effective frequency | |||||
| F3 | RS485 interface | |||||
| T1 | Normal temperature type | |||||
| T2 | High temperature type | |||||
| T3 | Ultra high temperature type | |||||
| P1 | 1．0MPa | |||||
| P2 | 1．6MPa | |||||
| P3 | 4．0MPa | |||||
| P4 | 16MPa | |||||
| D1 | 220VAC±10％ | |||||
| D2 | 24VDC±10％ | |||||
| J1 | Integrated structure | |||||
| J2 | Split type structure | |||||
| J3 | Explosion proof integrated structure | |||||
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