High temperature type metal tube rotameter

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ZW-LZ series High temperature type metal tube rotameter Using the principle of variable area measure…

Productoverview:

ZW-LZ series High temperature type metal tube rotameter Using the principle of variable area measurement, suitable for measuring of liquid gas. All metal structure, indicating type, electric remote type, corrosion type, pressure type, jacket type, explosion-proof type. With 0-10mA, 4-20mA standard analog signal and output instructions. The accumulation of digital communication, site modification parameter, function of different power supply modes, with a magnetic filter and special specifications. If the iron containing magnetic particles of metal flow measurement in the medium, it should be installed in the entrance flow meter magnetic filter. It should be in the material flow meter corresponding to the same.

Second, working principle:

ZW-LZ series high temperature type 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.

Third, application:

ZW-LZ series high temperature type metal tube rotameter has the advantages of simple structure, reliable work, high accuracy, wide application range. Compared with glass rotor flowmeter can resist high pressure. LZ series flowmeter has the local indication, limit switch, electric remote alarm, corrosion resistance, damping and explosion-proof type jacket, etc.. Widely used in petroleum, chemical, power, pharmaceutical, food, water treatment, etc.. The complex, harsh environmental conditions, the flow measurement process and various medium conditions in.

Four, 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.

Five, main features:

1, all metal structure design, strong, simple, high pressure resistance, high temperature resistance, corrosion resistance, long service life;

2, a short trip, the total height of 250mm, easy to install;

3, mechanical pointer instructions LCD liquid crystal display instantaneous flow, instantaneous flow, cumulative flow;

4, intelligent indicator, using foreign Zui new signal processing chip, modular design, no hysteresis;

5, data recovery, data backup, power down protection and fault self diagnosis function;

6, HART type indicator, two-wire 24VDC power supply, 4-20mA standard current signal output of HART protocol stack;

7, through the HART communication manipulator configuration and parameters can be adjusted;

8, with the PC serial connection, through the Windows program, to achieve on-site calibration of the instrument;

9, can be used in flammable and explosive occasions;

10, vertical and horizontal, upper lower, bottom side, side into the side such as the installation of a variety of forms, flange or threaded connection.

Six, technical parameters:

1, measurement range: water 2.5 ~ 100000l/h (20 C)

2, range: 10:1

3, 1.0, 1.5, precision grade: 2.5

4, working pressure: DN15 DN25, DN50, PN4.0MPazui, DN80, DN100 10.0MPa PN1.6MPazui 6.4MPa

5, medium temperature: -40 to 300 DEG C

6, medium viscosity: DN15: <5mPa - s eta (F15.1 ~ F15.3)

<30mPa - S (F15.4 - F15.8)

DN25: <250mPa - s.

DN50: <300mPa - S - DN150.

7, the ambient temperature: LCD type: -40 to 85 DEG C

Pointer type: -40 to 120 DEG C

8, connection: flange (executive standard DIN2501 or as required by standard flange manufacturing)

9 meter height: 250mm

10, cable interface: M20*1.5

11, power supply: 24VDC two-wire 4 ~ 20mA or 85 ~ 265VAC 50/60Hz (remote type)

12, alarm output: alarm relay output lower or upper limit of instantaneous flow (contact capacity Zui 5A-250VAC) or open collector output (internal impedance Zui 100mA-30VDC 100 ohm).

13, the cumulative output pulse: pulse output, Zui interval of every 10 seconds a pulse (AC) or a pulse every 50 milliseconds.

14, double liquid crystal display: LCD display, display the instantaneous flow and cumulative flow.

15: Exia II CT4, explosion-proof.

16, the measuring tube material: 316 stainless steel (common type) or Teflon liner (corrosion type).

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. Can measure the temperature of -80 DEG -+300 DEG medium flow.

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, low boiling fluid vaporization 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. High pressure type structure as shown below. At present, Zui high pressure FFM64 series 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.

Eighth, installation notes:

1 must be installed before the flowmeter in the pipeline welding slag, clean up debris.

The vertical part of the 2 flowmeter must be installed perpendicular to the ground inclination of not more than 5 DEG. Otherwise it will affect the measurement accuracy.

In order to ensure the accuracy of 3 measurement meter, should increase the straight section of not less than 10xDN in the inlet side of the outlet end of the flowmeter, not less than 5 * DN straight pipe, measurement control valve must be installed in the downstream of the flowmeter.

4 if the measured medium is a pulsating flow or two-phase flow buffer should be large, installed in the upstream of the flowmeter to eliminate or weaken the fluctuation, to ensure the flow of medium is single-phase stable, at the same time, suggested using damping type flowmeter.

5 medium is dirty or containing magnetic particles, recommended to install filters or filter in the upstream of the magnetic flowmeter.

6 flow meter should be installed properly supporting pipeline vibration or reduce the axial load of the flowmeter, otherwise should increase the support of fixed flowmeter.

7 in order to facilitate the maintenance of magnetic flowmeter, filter cleaning and user line maintenance, recommend the use of bypass pipe.

8 when the flowmeter is used to measure the gas, should ensure that the pressure loss in the pipeline working pressure not less than 5 times the meter, the meter can make stable normal operation.

9 of the electric remote alarm and meter limit switch before use, open the instrument cover, according to the correct wiring wiring diagram.

According to the 10 meter indicator in the warning signs, remove the vibration resistance of the moving parts to prevent float transport, then use the restored instrument.

Nine, 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.

10, the measuring range and the pressure loss:

Eleven, the selection of encoding:

Twelve, design selection and ordering information:

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

2, please provide a 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.