Insulation type metal tube rotameter

• 

ZW-LZ series Insulation type metal tube rotameter Using the principle of variable area measurement, …

Productoverview:

ZW-LZ series Insulation 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, 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. 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.

Two, work principle:

ZW-LZ series insulation 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.

Three, 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.

Four, instrument structure:

ZW-LZ series insulation type 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

Basic type: wetted parts material 0Cr19Ni9, suitable for liquid measurement.

Anticorrosive lining: PTFE, suitable for measuring the corrosive medium.

Jacket: for medium need insulation or cooling occasions, jacket flange DN15, PN1.6.

Damping type: suitable for gas measurement.

Indicator

Instructions: instructions for instantaneous flow field.

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

Alarm type: the need for alarm.

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, 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.

Eight, installation notes:

1, before installation flowmeter must be welding slag, clean the impurities in pipelines.

Part 2, erect flowmeter must be perpendicular to the ground installation inclination of not more than 5 degrees. Otherwise it will affect the measurement accuracy.

3, in order to ensure the accuracy of flowmeter, 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, the medium is dirty or containing magnetic particles, recommended to install filters or filter in the upstream of the magnetic flowmeter.

6, vibration flowmeter shall be installed properly supporting pipeline 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, recommended as shown in the figure Shuo bypass pipe.

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

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

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

Troubleshooting nine fault:

1, check the alarm set value size SU.

2, check the deviation set D value can not be too large.

3, FUN function, logic function is correct. HA-A said the upper limit is logical. LA-A said the lower limit is.

4, circuit board failure, replace the board.

5, if the lcd barcode indicates the correct output, no action, the cathode can check the external power and external power supply is connected with the anode of instrument power supply.

If the wobble in use, according to the jitter amplitude to determine what kind of amplitude jitter. Divided into mild and moderate jitter jitter jitter and jitter.

1, a slight jitter due to fluctuations caused by the media. Can be used to increase the damping of the way to overcome.

2, moderate jitter caused by medium flow state: general. For general gas as the medium pressure instability caused by.The regulator or stabilizer to overcome or increase the damping of gas meter.

3, severe jitter: mainly due to medium gas pulsation, operation pressure instability or give users pressure, temperature, flow meter and the actual state does not have large differences over range instrument.

Ten, the measuring range and the pressure loss:

Eleven, the selection of encoding:

12, 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.