The level of the installation of metal tube rotameter

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ZW-LZ series The level of the installation of metal tube rotameter Is a variable area flow meter bas…

Productoverview:

ZW-LZ series The level of the installation of metal tube rotameter Is a variable area flow meter based on float position measurement, suitable for measurement of liquid and gas. The concept of full metal structure, Modular design, because of its small volume, small pressure loss, large measuring range ratio (10:1), easy installation, maintenance with 0-10mA, 4-20mA standard analog signal output and instructions (optional). Display the instantaneous and cumulative flow, digital communication, site measurement parameter, has the function of different power supply modes.

Two, work principle:

ZW-LZ series horizontal metal tube rotameter is the medium to be measured through a conical measuring tube float from upper and lower ends of the differential pressure generated form the upward force, when the float was immersed in a fluid on the lift is greater than the weight of the float, the float will rise, annulus area increases, the annulus fluid velocity decreased immediately float the lower end of the differential pressure is reduced, to float upward force also decreases with, until the lift is equal to the weight of the float when immersed in a fluid, the float will stabilize at a certain height. The float position that corresponds to the size of the measured medium flow. A built-in magnet, the float with the medium moves up and down, with the movement of the float magnetic field changes.

A, for in situ, by rotary magnetic float and the local indicator in the inner magnetic coupling, rotate, and drives the pointer, through the dial indicates the size of the flow.

B, the intelligent, by a solid state magnetic sensor intelligent indicator in the magnetic field will change into electrical signal output by A/D transform, D/A microprocessor, LCD liquid crystal display to show the size and cumulative flow flow.

Three, application:

ZW-LZ series horizontal metal tube rotameter is suitable for small flow, low Reynolds number of medium flow measurement is widely used in food, chemical, petroleum, metallurgy, electric power, environmental protection, medicine and light industry and other departments of the liquid flow measurement and automatic control.

Four, instrument structure:

ZW-LZ series horizontal metal tube rotameter is mainly composed of a measuring device and the indicator consists of two parts, according to the different ways of connection can be divided into vertical and horizontal installation two installation.

Measuring device part

1 basic types: wetted parts material 0Cr19Ni9, suitable for liquid measurement;

2, anti-corrosion type: Teflon lined, suitable for measuring the corrosive medium;

3, dips: for medium heat or cooling occasions, jacketed flange DN15, PN1.6;

4, damping type: suitable for gas measurement.

Indicator

1, site type indicator: indicates the instantaneous flow field for;

2, the remote type: DC signal output of 4 ~ 20mA, realize the remote transmission function;

3, alarm type: the need for alarm occasions.

Five, main features:

1, suitable for small diameter and low flow velocity medium measurement;

2, reliable operation, low maintenance, long service life;

3, for the straight pipe is not high, wide flow ratio 10:1

4, two large LCD display, optional field instantaneous / total flow rate display, with backlight;

5, single axis sensitive indicator;

6, all metal structure, suitable for high temperature, high pressure and strong corrosive medium;

7, can be used in flammable and explosive occasions.

Six, technical parameters:

1, measuring range: water (20 C), 2.5-150000L/h, air (20 DEG C, 0.1013MPa 0.07-4000Nm3/h);

2, range: 10:1;

3, accuracy: 1.5/2.5;

4, working pressure: 6.4MPa;

5, working temperature: -40 to 350 DEG C (fluorine plastic lined -10 to 80 DEG C);

6, the ambient temperature to 80 DEG C: -20;

7, medium viscosity: DN15 = DN25, DN150 = ~;

8, the tube body material: 1Cr18Ni9Ti, 316L, PTEF lining;

9, installation: flange, or as required;

10, the basic error: 1.5%;

11, the output signal: 4 ~ 20mA;

12, load impedance: 350 ohms;

13, power supply: 24VDC;

14, electrical interface: M20 * 1.5;

15, explosion proof mark: ExibIICT4.

Seven, structure classification:

1, the high temperature structure (G type)

High temperature structure type (G type) is used for medium temperature is too high or too low and the need to take measures on the insulation of the measuring tube medium flow measurement. The high temperature structure is increased and the distance between the measuring tube indicator to increase heat dissipation and increase the insulation thickness, ensure the working environment temperature indicator in the allowable range. The selection of the "G" type.

The flow of G type metal tube flowmeter can measure the temperature of -80 DEG -+300 DEG medium.

The structure of 2, with a damper device (Z type)

Damper structure type flowmeter for entrance flow (pressure) medium flow measurement is unstable, especially for gas measurement.

3, jacket type structure (T type)

Jacket structure for heating or cooling of needs (such as high viscosity and flow measurement of the medium Yi Jiejing).In the jacket by heating or cooling medium, the fluid does not vaporize and crystallization.

Import and export with thermal medium connection standard to use HG20594-97 DN15 PN1.6 flange, flange connection and other specifications may be marked with production plant, pressure rating jacket for 1.6MPa.

4, high pressure type structure (Y type)

High pressure type structure for media pressure is greater than the standard pressure level measurement. At present, Zui high pressure can reach 32MPa. In addition high pressure type flowmeter can provide built-in magnetic filter type, installation height is 350mm. FA, FB and FC type Zui high pressure 10MPa.

Eight, conversion indicator:

The converter is actually the height conversion taper pipe float into the corresponding volume scale. From the output signal: local display and remote signal output type:

1, local display type: by in situ indicator in the follow-up magnetic float and the inner magnetic coupling, and rotate, and the electric pointer by dial indicating the flow

2, intelligent remote type, by the intelligent indicator in the follow-up magnetic float and the inner magnetic coupling, rotate, and drives the magnet and the sensing pointer through a magnetic sensor magnetic field change into electrical signals by A/D conversion, digital filter, D/ microprocessor, A output, LCD liquid crystal display, to show the instantaneous flow and cumulative flow rate.

9, product maintenance:

1, in the process of long-term use, the pipeline inevitably there will be ferromagnetic impurity adsorption on the float, it will float stuck or affect the measurement accuracy, from time to time to clean the sensor float; if the installation of magnetic filters should be cleaned regularly.

2, the instrument indicator with electronic components, instrument wiring or demolition of housing, to housing screws, must ensure sealing, prevent impurities, or other material into the water, and also to ensure reliable earthing of the meter casing.

3, the instrument is installed, in use, should pay attention to:

When the valve is opened to avoid the formation of pressure shock makes the float slamming limiting device, causing damage to the instrument, slowly open the valve!

The measurement of gas meter is equipped with gas damper, Zui to decrease the float concussion; to ensure the stability of the float, a throttle valve can be installed in the instrument export.

4, for the remote type instrument, we must first ensure that the instrument wiring correctly, keeps power; for dangerous situations, must choose the explosion-proof, and the installation and use of proof required by the.

Ten, installation notes:

1 meters, arrived at the scene, before installing the pipeline to remove all packing and unpacking, should carefully check whether the instrument for transport damage.

2, the instrument before installation, the pipeline should be blowing clean, prevent pipeline have ferromagnetic impurities attached to the instrument on a float, affect the normal measuring instruments, will cause serious damage to the instrument. If cannot avoid, should be installed in the entrance of the magnetic filter instrument.

3, because of the measuring mechanism of instrument by using magnetic transmission and magnetic signal processor for normal use and performance guarantee instrument, installation of a range of at least 500mm are not allowed in the presence of ferromagnetic materials, strong magnetic field and strong electromagnetic field.

4, installed in the pipeline in the instrument, should not be subject to stresses, instrument entrances should be reasonable to support, so that the instrument is small in Zui stress process pipeline.

5, instrument installation is divided into horizontal and vertical installation installation, vertical installation of the instrument, instrument should ensure the verticality, tilt deviation is not greater than 3 degrees; the level of instrument installation, should guarantee the instrument level straightness, angle deviation is not greater than 3 degrees.

6, the instrument at the time of installation, the upstream and downstream pipeline diameter and the instrument should be the same caliber, the flange should be matched with each other; in order to ensure the accuracy and stability of the instrument, the instrument upstream straight pipe length is 5 times the nominal diameter of the instrument, the downstream straight pipe length of 250mm zui.

7, the measurement of gas meter, gas meter if discharge directly to the atmosphere, even damage the instrument will cause distortion meter data. In this condition, the throttle valve should be installed at the exit of the instrument.

8, install the P T F E lining instrument, to be especially careful, at low temperatures, P T F E will deform under the action of pressure, so do not tighten the installation.

9, with a liquid crystal display instrument, to avoid direct sunlight, so as not to reduce the service life of the liquid crystal; with lithium battery powered instruments, to avoid direct sunlight, high temperature (65 DEG C) to reduce the capacity and lifetime of lithium battery.

Eleven, the measuring range and the pressure loss:

Twelve, the selection of encoding:

Thirteen, design selection and ordering information:

1, please provide the pipe size, wall thickness, material requirements and accuracy requirements;

2, please provide the liquid or gas, such as the name, commonly used commonly used temperature, working pressure, common flow, density, viscosity etc.;

3, choose anti-corrosion type, should indicate the measured corrosion and concentration etc.;

4, if there are special to show, please contact our sales department.

Customer service service commitment:

1, our series of metal tube flowmeter series product quality problems within twelve months, responsible for free maintenance.

2, the warranty period if the products of our company have any quality problems, our company is responsible for free repair or replacement.

3, the warranty period if the user use undeserved, cause damage to the product, our company is responsible for the maintenance, collect the damaged parts cost.

4, after the warranty period of product quality problems, our company is responsible for the maintenance, collect the damaged parts cost.

5, if the user needs to our service, our company in the province of the user service personnel arrived at the scene within 12 hours, arrived at the scene 48 hours outside users.