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Product Overview:
SP-LDE seriesConcentrated sulfuric acid flowmeter _ Dilute hydrochloric acid flowmeterIt consists of two parts: sensors and converters. It works based on Faraday's law of electromagnetic induction and is used to measure the volumetric flow rate of conductive liquids with a conductivity greater than 5 μ S/cm. It is an inductive instrument for measuring the volumetric flow rate of conductive media. In addition to measuring the volumetric flow rate of general conductive liquids, it can also be used to measure the volumetric flow rate of strong corrosive liquids such as strong acids and alkalis, as well as homogeneous liquid-solid two-phase suspensions such as mud, slurry, and pulp. Widely used in industrial sectors such as petroleum, chemical, metallurgical, textile, papermaking, environmental protection, food, as well as municipal management, water conservancy construction, river dredging and other fields for flow measurement.
Working Principle:
SP-LDE seriesConcentrated sulfuric acid flowmeter _ Dilute hydrochloric acid flowmeterAccording to Faraday's principle of electromagnetic induction, a pair of detection electrodes are installed on the tube wall perpendicular to the axis of the measuring tube and the magnetic field lines. When the conductive liquid moves along the axis of the measuring tube, it cuts the magnetic field lines and generates an induced potential. This induced potential is detected by the two detection electrodes, and its value is proportional to the flow rate. Its value is E=KBVD equation:
E - Induced potential;
K - coefficient related to magnetic field distribution and axial length;
B - Magnetic induction intensity;
V - average flow velocity of conductive liquid;
D - electrode spacing; (Measuring the inner diameter of the tube)
The sensor uses the induced potential E as a flow signal, which is transmitted to the converter. After amplification, transformation, filtering, and a series of digital processing, the instantaneous and cumulative flow rates are displayed on a backlit dot matrix LCD. The converter has 4-20mA output, alarm output and frequency output, and is equipped with communication interfaces such as RS-485, and supports HART and MODBUS protocols.
Concentrated sulfuric acid flowmeter _ Dilute hydrochloric acid flowmeterTechnical Specifications:
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Nominal diameter (mm)
(Special specifications can be customized)
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Pipeline type PTFE lining: DN10~DN600
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Pipeline rubber lining: DN40~DN2200
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flow direction
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Positive, negative, net traffic
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turndown ratio
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150：1
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repeatability error
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± 0.1% of the measured value
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accuracy class
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Pipeline type: 0.5 level, 1.0 level
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Temperature of the measured medium
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Ordinary rubber lining: -20 to+60 ℃
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High temperature rubber lining: -20 to+90 ℃
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PTFE lining: -30 to+100 ℃
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High temperature PTFE lining: -20 to+180 ℃
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Rated working pressure
(High voltage can be customized)
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DN10－DN150：≤1.6MPa
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DN200－DN350：≤1.0MPa
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DN400－DN1000：≤0.6MPa
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DN450－DN2200：≤0.25MPa
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flow rate range
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0.1－15m/s
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Conductivity range
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The conductivity of the measured fluid is ≥ 5 μ s/cm
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signal output
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4-20mA (load resistance 0-750 Ω), pulse/frequency, control level
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Communication output
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RS485, MODBUS protocol, HART protocol
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power supply
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AC220V or DC24V
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Require the length of the straight pipe section
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Upstream ≥ 5DN, downstream ≥ 2DN
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connection method
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The flowmeter and piping are connected by flanges, in accordance with the national standard GB/T9115.1-2000
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Explosion-proof rating
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ExdeiallBT4-T6
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Protection level
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IP65， Specially customized up to IP68
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ambient temperature
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－25～＋60℃
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relative temperature
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5%～95%
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Total power consumption
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Less than 20W
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Concentrated sulfuric acid flowmeter _ Dilute hydrochloric acid flowmeterSelection of electrodes
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electrode material
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Corrosion resistance and wear resistance
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Stainless steel 0Crl8Nil2M02Ti
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Used for weakly corrosive media such as industrial water, domestic water, sewage, etc., suitable for industrial sectors such as petroleum, chemical, steel, as well as municipal and environmental protection fields.
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哈氏合金B
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It has good corrosion resistance to all concentrations of hydrochloric acid below boiling point, as well as to non chlorinated acids, bases, and non oxidizing salt solutions such as sulfuric acid, phosphoric acid, hydrofluoric acid, and organic acids.
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Hastelloy C
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Can withstand corrosion from non oxidizing acids such as nitric acid, mixed acids, or mixed media of chromic acid and sulfuric acid, as well as corrosion from oxidizing salts such as Fe, Cu ', or other oxidants such as hypochlorite solutions above room temperature and seawater
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Titanium
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Capable of withstanding corrosion from seawater, various chlorides and hypochlorites, oxidizing acids including fuming sulfuric acid, organic acids, and alkalis. Not resistant to the corrosion of relatively pure reducing acids such as sulfuric acid and hydrochloric acid, but if the acid contains oxidants such as nitric acid, Fc++, Cu++, the corrosion is greatly reduced.
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Tantalum
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It has excellent corrosion resistance and is very similar to glass. Except for hydrofluoric acid, fuming sulfuric acid, and alkali, it can withstand corrosion from almost all chemical media, including boiling point hydrochloric acid, nitric acid, and sulfuric acid below 50 ℃. Dig in alkali; Corrosion resistance.
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Platinum/titanium alloy
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Can withstand almost all chemical media, but not suitable for aqua regia and ammonium salts.
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Stainless steel coated with tungsten carbide
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Used for non corrosive and highly abrasive media.
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Note: Due to the wide variety of media and the complex factors such as temperature, concentration, and flow rate that affect their corrosiveness, this table is for reference only. Users should make their own choices based on the actual situation, and if necessary, conduct corrosion resistance tests on the selected materials, such as hanging plate tests.
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Concentrated sulfuric acid flowmeter _ Dilute hydrochloric acid flowmeterproduct portfolio
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model
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caliber
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SP-LDE
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15~2600
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code name
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electrode material
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K1
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316L
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K2
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HB
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K3
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HC
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K4
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Titanium
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K5
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Tantalum
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K6
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platinum alloy
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K7
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Stainless steel coated with tungsten carbide
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code name
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Lining material
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C1
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Polytetrafluoroethylene (F4)
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C2
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Perfluoroethylene propylene (F46)
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C3
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Polyfluoroethylene (FS)
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C4
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Polyvinyl rubber
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C5
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polyurethane rubber
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code name
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function
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E1
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Level 0.3
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E2
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Level 0.5
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E3
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Level 1
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F1
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4－20Madc, Load ≤ 750 Ω
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F2
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0-3kHz, 5V active, variable pulse width, output high-end effective frequency
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F3
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RS485 interface
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T1
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Normal temperature type
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T2
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high-temperature type
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T3
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Ultra high temperature type
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P1
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1．0MPa
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P2
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1．6MPa
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P3
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4．0MPa
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P4
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16MPa
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D1
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220VAC±10％
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D2
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24VDC±10％
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J1
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Integrated structure
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J2
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Split type structure
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J3
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Explosion proof integrated structure
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