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Jiangsu Guoce Automation Instrument Co., Ltd

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    180875717@qq.com

  • Phone

    18936753688

  • Address

    No. 116 Dongyang Road, Jinhu County

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Price of split type sewage flowmeter

NegotiableUpdate on 06/17
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Overview

The price of the split type sewage flowmeter is $n, and the measurement principle of the electromagnetic flowmeter for sewage treatment is Faraday's law of electromagnetic induction. The main components of the sensor are: measuring tube, electrode, excitation coil, iron core, and magnetic yoke housing.

Product Details

The measurement principle of the electromagnetic flowmeter for sewage treatment is Faraday's law of electromagnetic induction. The main components of the sensor are the measuring tube, electrode, excitation coil, iron core, and magnetic yoke housing. It is mainly used to measure the volumetric flow rate of conductive liquids and slurries in closed pipelines. Including highly corrosive liquids such as acids, alkalis, salts, etc. This product is widely used in industries such as petroleum, chemical, metallurgical, textile, food, pharmaceutical, papermaking, as well as in fields such as environmental protection, municipal management, and water conservancy construction.
The LDE series electromagnetic flowmeter is a fully intelligent electromagnetic flowmeter developed using advanced technologies both domestically and internationally. Its all Chinese electromagnetic converter core uses 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 advanced national 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.
Price of split type sewage flowmeter

IIProduct features of split type sewage flowmeter:

There are no movable parts or flow blocking components inside the pipeline, and there is almost no additional pressure loss during measurement.

The measurement results are independent of physical parameters such as flow velocity distribution, fluid pressure, temperature, density, viscosity, etc.

▲ The range can be modified online according to the actual needs of the user on site.

▲ High definition backlit LCD display, fully Chinese menu operation, easy to use, simple to operate, easy to learn and understand.

▲ Adopting SMD devices and surface mount technology (SMT circuits have high reliability).

Adopting a 16 bit embedded microprocessor, it has fast computing speed, high accuracy, programmable low-frequency rectangular wave excitation, improved stability of flow measurement, and low power consumption.

▲ All digital processing, strong anti-interference ability, reliable measurement, high accuracy, flow measurement range can reach 150:1

▲ Ultra low EMI switching power supply, with a wide range of power supply voltage changes and good EMC resistance

▲ There are three integrators inside that can display the forward cumulative amount and the difference cumulative amount respectively. There is also a non power down clock inside that can record 16 power down times

▲ It has digital communication signal outputs such as RS485, RS232, Hart, and Modbus.

3、 Working principle of electromagnetic flowmeter for sewage treatment

The measurement principle of sewage flowmeter is based 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. After amplifying and processing the flow signal, the converter can display the fluid flow rate and output signals such as pulses and analog currents for flow control and regulation.

E=KBdv

In the formula: E - --------------- is the signal voltage between the electrodes (v)

B - ----------------- Magnetic flux density (T)

D --------------------------------------------------------------

V ---------------- Average flow velocity (m/s)

In the equation, k and d are constants. Since the excitation current is constant, B is also constant. Therefore, from E=KBdv, it can be seen that the volume flow rate Q is proportional to the signal voltage E -, that is, the signal voltage E induced by the flow velocity is linearly related to the volume Q. Therefore, as long as E is measured, the flow rate Q can be determined, which is the basic working principle of electromagnetic flow meters.

According to E=KBdv, parameters such as temperature, density, pressure, conductivity, and liquid-solid composition ratio of the measured flow medium will not affect the measurement results. As for the flow state, as long as it conforms to axisymmetric flow (such as laminar or turbulent flow), it will not affect the measurement results. Therefore, electromagnetic flowmeter is a true volumetric flowmeter. For manufacturers and users, the volumetric flow rate of any other conductive fluid medium can be measured without any correction as long as it is calibrated with ordinary water. This is a prominent advantage of electromagnetic flow meters, which is not found in any other flow meter. There are no active or obstructed components inside the measuring tube, so there is almost no pressure loss and high reliability.

Related parameter table of electromagnetic flowmeter for sewage treatment:

Price of split type sewage flowmeter

Technical data of the whole machine and sensors

Execution standards

JB/T 9248—1999

Nominal Diameter

15. 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600, 1800, 2000, 2200, 2400, 2600, 2800, 3000

15m/s

DNl5~DN600

Indication: ± 0.3% (flow rate ≥ 1m/s); ± 3mm/s (flow rate<1m/s)

DN700—DN3000

± 0.5% of the indicated value (flow rate ≥ 0.8m/S); ± 4mm/s (flow rate<0.8m/S)

Fluid conductivity

≥5uS/cm

Nominal pressure of flowmeter

4.0MPa

1.6MPa

1.0MPa

0.6MPa

6.3、10MPa

DNl5~DN150

DNl5~DN600

DN200~DN1000

DN700~DN3000

Special Orders

ambient temperature

sensor

-25 ℃ -+60 ℃

Converter and integrated model

-10 ℃ -+60 ℃

Lining material

Polytetrafluoroethylene, chloroprene rubber, polyurethane, perfluoroalkoxy (F46), mesh PFA

Measuring temperature

- Body type

70℃

separated

Polychloroprene rubber lining

80℃; 120 ℃ (specify when ordering)

Polyurethane lining

80℃

PTFE lining

100℃; 150 ℃ (specify when ordering)

Perfluoroethylene propylene (F46)

Mesh PFA

Signal electrode and ground electrode materials

Stainless steel 0Crl8Nil2M02Ti, Hastelloy C, Hastelloy B, titanium, tantalum, platinum/iridium alloy, stainless steel coated with tungsten carbide

Electrode scraper mechanism

DN300—DN3000

Connecting flange material

carbon steel

Grounding flange material

Stainless steel 1Cr18Ni9Ti

Imported protective flange materials

DN65—DNl50

Stainless steel 1Cr18Ni9Ti

DN200~DNl600

Carbon steel and stainless steel 1Cr18Ni9Ti

Shell protection

DNl5~DN3000 separable rubber or polyurethane lined sensor

IP65 or IP68

Other sensors, body type flow meters, and separate converters

IP65

Distance (separated type)

The distance between the converter and the sensor is generally not more than 100m

Technical data of electromagnetic flowmeter converter for sewage treatment

power supply

exchange

85—265V,45—400Hz

direct-current

11—40V

Operation keys and display

Touch-tone

Four thin film buttons can be used to set and select all parameters, and the converter can also be programmed using a PC (RS232);

3-line LCD with wide viewing angle, wide temperature, and backlit display;

The first line displays the traffic value;

The second line displays the flow unit;

The third line displays the percentage of traffic, total forward, total reverse, total difference, alarm, and flow rate.

Magnetic key type

Two magnetic keys are used for selecting and resetting display parameters, and the converter is programmed using a PC (RS232);

2-line LCD with wide viewing angle, wide temperature, and backlit display:

Line 1: Magnetic key selection: Display flow percentage, forward total amount, reverse total amount, difference total amount, alarm, flow rate.

Line 2: Display traffic.

Internal integrator

Positive total, negative total, and differential total.

output signal

Unidirectional analog output

Fully isolated, load ≤ 600D. (at 20mA);

Upper limit: 0-21mA optional, 1mA per level;

Lower limit: 0-21mA optional, 1mA per level;

Programming for forward and reverse flow output modes.

Bidirectional analog output

The lower limit is. Or 4mA, other same unidirectional analog outputs.

Bidirectional pulse output

Two outputs correspond to forward and reverse flow rates, with a frequency range of 0-800Hz and an upper limit of 1-800Hz to choose from. Each IHz level is available;

Square wave or selected pulse width, with an upper limit of 2.5S and 1ms per level;

Passive isolation transistor switch output, capable of absorbing 250mA current and withstanding 35V voltage.

Dual channel alarm output

Programmable alarm for high/low flow rate, air traffic control, fault status, positive/negative flow rate, analog over range, pulse over range, pulse small signal cutoff, with optional output polarity;

Transistor switch output with isolation protection, capable of absorbing 250mA current and withstanding 35V voltage (not isolated from pulse output)

digital communication

 

RS232,RS485,HART

The measurement principle of the electromagnetic flowmeter for sewage treatment is Faraday's law of electromagnetic induction. The main components of the sensor are the measuring tube, electrode, excitation coil, iron core, and magnetic yoke housing. It is mainly used to measure the volumetric flow rate of conductive liquids and slurries in closed pipelines. Including highly corrosive liquids such as acids, alkalis, salts, etc. This product is widely used in industries such as petroleum, chemical, metallurgical, textile, food, pharmaceutical, papermaking, as well as in fields such as environmental protection, municipal management, and water conservancy construction.
The LDE series electromagnetic flowmeter is a fully intelligent electromagnetic flowmeter developed using domestic and foreign technologies. Its 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 national technology, with an input impedance of up to 1015 ohms, a common mode rejection ratio better than 100db, and a suppression ability for external interference and 60Hz/50Hz interference better than 90db. 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.

IIProduct features of split type sewage flowmeter:

There are no movable parts or flow blocking components inside the pipeline, and there is almost no additional pressure loss during measurement.

The measurement results are independent of physical parameters such as flow velocity distribution, fluid pressure, temperature, density, viscosity, etc.

▲ The range can be modified online according to the actual needs of the user on site.

▲ High definition backlit LCD display, fully Chinese menu operation, easy to use, simple to operate, easy to learn and understand.

▲ Adopting SMD devices and surface mount technology (SMT circuits have high reliability).

Adopting a 16 bit embedded microprocessor, it has fast computing speed, high accuracy, programmable low-frequency rectangular wave excitation, improved stability of flow measurement, and low power consumption.

▲ All digital processing, strong anti-interference ability, reliable measurement, high accuracy, flow measurement range can reach 150:1

▲ Ultra low EMI switching power supply, with a wide range of power supply voltage changes and good EMC resistance

▲ There are three integrators inside that can display the forward cumulative amount and the difference cumulative amount respectively. There is also a non power down clock inside that can record 16 power down times

▲ It has digital communication signal outputs such as RS485, RS232, Hart, and Modbus.

3、 Working principle of electromagnetic flowmeter for sewage treatment

The measurement principle of sewage flowmeter is based 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. After amplifying and processing the flow signal, the converter can display the fluid flow rate and output signals such as pulses and analog currents for flow control and regulation.

E=KBdv

In the formula: E - --------------- is the signal voltage between the electrodes (v)

B - ----------------- Magnetic flux density (T)

D --------------------------------------------------------------

V ---------------- Average flow velocity (m/s)

In the equation, k and d are constants. Since the excitation current is constant, B is also constant. Therefore, from E=KBdv, it can be seen that the volume flow rate Q is proportional to the signal voltage E -, that is, the signal voltage E induced by the flow velocity is linearly related to the volume Q. Therefore, as long as E is measured, the flow rate Q can be determined, which is the basic working principle of electromagnetic flow meters.

According to E=KBdv, parameters such as temperature, density, pressure, conductivity, and liquid-solid composition ratio of the measured flow medium will not affect the measurement results. As for the flow state, as long as it conforms to axisymmetric flow (such as laminar or turbulent flow), it will not affect the measurement results. Therefore, electromagnetic flowmeter is a true volumetric flowmeter. For manufacturers and users, the volumetric flow rate of any other conductive fluid medium can be measured without any correction as long as it is calibrated with ordinary water. This is a prominent advantage of electromagnetic flow meters, which is not found in any other flow meter. There are no active or obstructed components inside the measuring tube, so there is almost no pressure loss and high reliability.

Related parameter table of electromagnetic flowmeter for sewage treatment:

Technical data of the whole machine and sensors

Execution standards

JB/T 9248—1999

Nominal Diameter

15. 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600, 1800, 2000, 2200, 2400, 2600, 2800, 3000

15m/s

DNl5~DN600

Indication: ± 0.3% (flow rate ≥ 1m/s); ± 3mm/s (flow rate<1m/s)

DN700—DN3000

± 0.5% of the indicated value (flow rate ≥ 0.8m/S); ± 4mm/s (flow rate<0.8m/S)

Fluid conductivity

≥5uS/cm

Nominal pressure of flowmeter

4.0MPa

1.6MPa

1.0MPa

0.6MPa

6.3、10MPa

DNl5~DN150

DNl5~DN600

DN200~DN1000

DN700~DN3000

Special Orders

ambient temperature

sensor

-25 ℃ -+60 ℃

Converter and integrated model

-10 ℃ -+60 ℃

Lining material

Polytetrafluoroethylene, chloroprene rubber, polyurethane, perfluoroalkoxy (F46), mesh PFA

Measuring temperature

- Body type

70℃

separated

Polychloroprene rubber lining

80℃; 120 ℃ (specify when ordering)

Polyurethane lining

80℃

PTFE lining

100℃; 150 ℃ (specify when ordering)

Perfluoroethylene propylene (F46)

Mesh PFA

Signal electrode and ground electrode materials

Stainless steel 0Crl8Nil2M02Ti, Hastelloy C, Hastelloy B, titanium, tantalum, platinum/iridium alloy, stainless steel coated with tungsten carbide

Electrode scraper mechanism

DN300—DN3000

Connecting flange material

carbon steel

Grounding flange material

Stainless steel 1Cr18Ni9Ti

Imported protective flange materials

DN65—DNl50

Stainless steel 1Cr18Ni9Ti

DN200~DNl600

Carbon steel and stainless steel 1Cr18Ni9Ti

Shell protection

DNl5~DN3000 separable rubber or polyurethane lined sensor

IP65 or IP68

Other sensors, body type flow meters, and separate converters

IP65

Distance (separated type)

The distance between the converter and the sensor is generally not more than 100m

Technical data of electromagnetic flowmeter converter for sewage treatment

power supply

exchange

85—265V,45—400Hz

direct-current

11—40V

Operation keys and display

Touch-tone

Four thin film buttons can be used to set and select all parameters, and the converter can also be programmed using a PC (RS232);

3-line LCD with wide viewing angle, wide temperature, and backlit display;

The first line displays the traffic value;

The second line displays the flow unit;

The third line displays the percentage of traffic, total forward, total reverse, total difference, alarm, and flow rate.

Magnetic key type

Two magnetic keys are used for selecting and resetting display parameters, and the converter is programmed using a PC (RS232);

2-line LCD with wide viewing angle, wide temperature, and backlit display:

Line 1: Magnetic key selection: Display flow percentage, forward total amount, reverse total amount, difference total amount, alarm, flow rate.

Line 2: Display traffic.

Internal integrator

Positive total, negative total, and differential total.

output signal

Unidirectional analog output

Fully isolated, load ≤ 600D. (at 20mA);

Upper limit: 0-21mA optional, 1mA per level;

Lower limit: 0-21mA optional, 1mA per level;

Programming for forward and reverse flow output modes.

Bidirectional analog output

The lower limit is. Or 4mA, other same unidirectional analog outputs.

Bidirectional pulse output

Two outputs correspond to forward and reverse flow rates, with a frequency range of 0-800Hz and an upper limit of 1-800Hz to choose from. Each IHz level is available;

Square wave or selected pulse width, with an upper limit of 2.5S and 1ms per level;

Passive isolation transistor switch output, capable of absorbing 250mA current and withstanding 35V voltage.

Dual channel alarm output

Programmable alarm for high/low flow rate, air traffic control, fault status, positive/negative flow rate, analog over range, pulse over range, pulse small signal cutoff, with optional output polarity;

Transistor switch output with isolation protection, capable of absorbing 250mA current and withstanding 35V voltage (not isolated from pulse output)

digital communication

 

RS232,RS485,HART