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Electromagnetic Flowmeter

 

Model: DN15-3000,KDLD

The highest velocity:15m/s

Precision:±0.3% 、±0.5%

 Power supply:85--265V ,45--400Hz

 Lining material:Ptfe, polyurethane rubber, neoprene, polypropylene

Electrode materials:Stainless steel, hartz alloy, titanium, tantalum, platinum-iridium alloy, carbonized

 TungstenPressure: 0.6MPa-4.0MPa

Temperature:-10℃-60℃

Protection grade:IP65,IP67,IP68

Temperature: water, oil,Chemical medium

Connection: flange

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Tel: +86 18538315922
Fax: +86-371-55883235
E-mail: weisidun@wsdvalve.com
Address: ZhengZhou,HeNan,China.

 

Product introduction:

    KDLD series electromagnetic flowmeter is made based on Faraday's law of electromagnetic induction machine with microelectronics technology for the integration of high-tech products, can measure the closed conducting liquid medium in the pipeline, including strong corrosive liquid such as acid, alkali, salt, mud, the volume of waste water and solid liquid two phase suspension flow. The products are widely used oil, chemical, metallurgical, textile, food, pharmaceutical, paper making industries and environmental protection, water conservancy construction and other fields.

Flow meter to measure the size of the system, two-way within three integrator: forward, reverse the total amount and total and differential; Forward and reverse flow can be shown, and has a variety of output: current, pulse, digital communications, HART.

Converter adopts 16-bit high-performance microprocessors, 2 x 16 LCD display, parameter setting is convenient, reliable in programming. There is rubber lining and polyethylene lining by ester sensor as nature structure.

 

 

Peculiarity:

 

(1) measurement is not affected by fluid density, viscosity, temperature, pressure and the influence of the conductivity changes;

(2) the unimpeded flow measuring tube parts, no pressure loss, low straight pipe requirements;

(3) converter with sensor or separation of a size;

(4) converter adopts 16-bit high-performance microprocessors, 2 x 16 LCD display, parameter setting is convenient, reliable programming;

(5) flow meter to measure the size of the system, two-way within three integrator, total quantity of forward, reverse and total difference amount; Forward and reverse flow can be shown, and has a variety of output: current, pulse, digital communications, HART;

(6) converter using surface mount technology (SMT), has self-check and self-diagnosis function;

(7) rubber and polyurethane lining sensor is essentially immersed structure;

(8) explosion-proof instrument can be used for the corresponding explosion-proof places;

(9) KDLD type electromagnetic flow meter used to measure the volume flow of conducting liquid and slurry in a closed pipe, suitable for chemical, electric power, mining and metallurgy, oil, water supply and drainage, paper making, medicine, food and other departments.

(10) low power consumption, zero point stability, high precision. Flow range up to 1500:1

 

 

Installation requirements

 

1. The flow meter of the measured medium flow marks and on the pipe flow direction should be consistent.

2. The installation position of flowmeter must ensure that the measuring tube is always full of measured medium, at the same time

To facilitate installation and maintenance of the flowmeter, and daily operation.

3. Select fluid flow pulse smaller places, which should be far away from the water pump and local resistance (valve

Door, elbow, etc.).

4. Avoid installed in the place of a negative pressure inside.

5. For flowmeter installation, maintenance convenience, as far as possible in the process piping installation of expansion joints,Especially large diameter pipes.

6. Stay away from strong magnetic field environment, such as large transformer, large motor, frequency conversion equipment, the high tension line

And so on.

7. Ensure enough measure straight pipe upstream and downstream flow.

8. Flow meter of the grounding.

9. Well when installing lining protection.

 

Application:

 

The products are widely used in petroleum, chemical, metallurgical, textile, food, pharmaceutical, paper making industries and environmental protection, water conservancy construction and other fields.

 

 

Parameters

 

1. WORKING PRINCIPLES

1.1 Measuring Principles

The measuring principle of electromagnetic flowmeter is based on the electromagnetic induction law of Farady. The sensor is mainly composed of measuring tube with isolate lining, a pair of electrodes installed by penetration of the measuring tube wall, a pair of coils and iron core to produce working magnetic field. When the conductive fluid flows through the measuring tube of the sensor, the voltage signal in direct proportion to the average flow velocity of the fluid will be inducted on the electrodes. The signal is amplified and treated by the transmitter to realize various display functions. 

WeiSiDun Group

 

1.2 Converter Circuit Schematic

The converters supplies a stable exciting current to the coil in the sensor of electronetic flowmeters to get B constant and amplifies the electromotive force and convert it into standard signals of current or frequency so that the signals can be used for displaying, controlling and processing. The schematic of converter circuit is shown in Fig. 2.1. 

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              Fig. 1 Schematic of converter circuit

 

2. TECHNICAL SPECIFICATION

 2.1The flowmeter is compliant to Standard “JB/T 9248-1999 Electromagnetic Flow Meter”.

 2.2Maximum flow speed: 15m/s

 2.3DN size: 3, 6, 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 150, 200, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600, 1800, 2000

 2.4Accuracy: 0.5%, 0.2%

 2.5Nominal Pressure: 4.0MPa(DN0-150)

1.6MPa(DN200-600)

1.0MPa(DN700-1200)

0.6MPa(DN400-2000)

Or other specified by order

 2.6Materials

Electrode Forms and Materials:

Electrode design has four forms: standard form, scraper form, detachable form and grounding electrode.

Electrode material is selectable from stainless steel containing Mo, stainless steel coated with carbonized tungsten, Hastelloy B, Hastelloy C, Titanium, Tantalum and platinum-iridium alloy.

Flange material: carbon steel

Grounding ring: stainless steel

Inlet protection ring: carbon steel, stainless steel

 2.7Enclosure

IP65:

IP68: only available for remote-type sensor with neoprene or polyurethane liner, not including flameproof model.

 2.8Flameproof Standard

DN15-DN600 compact-type: md II BT4

DN15-DN1600 remote-type: sensor and converter both installed in dangerous area: md II BT4.

DN15-DN1600 remote-type: sensor installed in dangerous area and converter installed in safe area: md II BT4

 2.9Connection Cable

Special cable is needed to connect the sensor and the converter for remote-type flowmeter. The cable length should not exceed 100 meters. A 10-meter cable is supplied free of charge and the rest is to be ordered.

 2.10General Specification of Converter

 

Power supply: AC 85-265V, 45-63Hz, ≤20W;  DC 11-40V

Converter display and operation: four keys are available to set all parameters. External handheld or PC can be used to do the configuration. High resolution LCD display with backlight, empty pipe detection and self-diagnostic function are equipped in the converter.

Digital communication: RS485, RS232, MODBUS,REMOTE

Output Signals:    - Current output: fully-isolated, 4-20mA/0-10mA ;load resistance: 0-10mA: 0-1.5KΩ; 4-20mA: 0-750Ω.

 

3. APPEARANCE AND INSTALLATION

 Dimensions of Converter, shown as Fig 3.

WeiSiDun Group

WeiSiDun GroupRemark:

1. Nominal Pressure 4.0 MPa for DN10-150; Nominal Pressure 1.6 MPa for DN10-1000; Nominal Pressure 1.0 MPa for DN10-1600; Nominal Pressure 0.6 MPa for DN10-2000. Other special pressure level can be designed on demand.

2. The length L increases 6 mm if ground flange is equipped; The length L increases 6 mm if inlet protection flange is equipped; The length L increases 6 mm if liner protection flange is equipped.

 

 

 

 

 

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