Electricity far eastone metal pipe flow meter

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ZW - LZ seriesElectricity far eastone metal pipe flow meterUse of measuring principle of variable ar…

ZW - LZ seriesElectricity far eastone metal pipe flow meterUse of measuring principle of variable area production research, suitable for measuring the liquid and gas.All metal structure, there are instructions, electric remote transmission, corrosion, high pressure, model, explosion-proof type.With 0 to 10 ma, standard 4-20 ma analog signal output and the instructions.Cumulative, digital communications, on-site measurement parameters, different ways of power supply function, with magnetic filter and special specifications varieties.
Second, the structure and working principle: 
1, the structure: 
Is mainly composed of three parts: 
A, indicator (intelligent indicator, on-site indicator); 
B, float; 
C, tapered measuring room. 
2, how it works: 
ZW - LZ series electric remote transmission tube flow meter bottom-up measured medium by the conical float to the top and bottom side of the differential pressure measurement of a tube to form the rising force, when the float upward force is greater than the baptism by float weight in the fluid, float up, clearance area increase, immediately drop the gaps in the fluid flow, float up and down the differential pressure is reduced, on the float upward force as well as to reduce, until the upward force equal to the float weight immersed in the fluid, the float is stable at a certain level.The discretion of the float position that corresponds to the size of the measured medium flow.Move up and down in float float the built-in magnet steel, medium, magnetic field changes with the movement of the float. 
Type a, for in situ by in situ indicator of the rotating magnet steel and the float inside the magnetic coupling, and turning, drives the pointer at the same time, through the dial indicates the size of the flow at this time. 
B, for intelligence, an intelligent indicator in the solid state magnetic sensor to the change of the magnetic field into electrical signals, after A/D conversion, microprocessor, D/A output, LCD liquid crystal display (LCD), to show the size of the flow rate and cumulative flow. 
Applications: 
ZW - LZ series electric remote transmission tube flow meter suitable for measuring the liquid, and gas.Widely used in petroleum, chemical, power, pharmaceutical, food, water treatment, etc.Is complex, condition of bad environment and conditions in the process of the flow measurement of various media. 
Four, the main features: 
1 all metal structure design and strong type flow meter; 
2, the independent conceptual design measurement indicator; 
3, is available in stainless steel, and hartz alloy, titanium, PTFE material measurement system; 
4, low pressure loss design; 
5, short stroke, small structure design, and 250 total height; 
6, magnetic coupling structure to ensure that the data transmission, signal is more stable; 
7, heat preservation, or heating jacket; 
8, vertical, horizontal, all kinds of installation method is more suitable for different occasions. 
9, suitable for small diameter and low velocity medium flow measurement; 
10, reliable operation, less maintenance, long service life. 
11, for the straight pipe requirements is not high; 
12, wide flow rate ratio 10:1; 
13, double row big liquid crystal display, optional site, according to the instantaneous/cumulative flow can take backlight; 
14, uniaxial sensitive indicator; 
15, non-contact magnetic coupling transmission; 
16, all-metal structure, suitable for high temperature, high pressure and strong corrosive medium; 
17, can be used in inflammable and explosive dangerous places; 
18, choose two wire, battery, ac power supply ways, multi-parameter calibration function; 
20, with data recovery, data backup and power-fail protection function. 
Five, the technical parameters: 
1, the measuring range: water (2.5 ~ 6000 L/h);Air (0.07 ~ 2000 m3 / h (0.101025 MPa, in 20 ℃). 
2, level of accuracy: 1.5, 2.5 on the Richter scale are unlikely. 
3, range than: 10:1. 
4, work stress: DN15 ~ 50, 4 MPa;,1.6 DN80 ~ 100 MPa. 
5, medium temperature: 80 ℃ ~ 200 ℃ (lining F46 flowmeter 0 ℃ ~ 85 ℃). 
6, the liquid medium viscosity: DN15 < 5 mpa s.;DN25 ~ 100 < 5 mpa, s. 
7, connection mode: flange connection, threaded connections, etc;The flange adoption of GB/T9119.8 ~ 10 standards. 
8, a total length: DN15 ~ 100 250 mm. 
9, measuring pipe material: type 1 cr18ni9ti, Cr18Ni12Mo2Ti corrosion type, 316 l, 316 lining F46, etc.If users have special requirements can be a special order. 
10, the output signal: two wire (4 ~ 20 mA), three wire system (0 ~ 10) mA. 
11, linearity: 1%; 
12, the power supply: DC 24 V (1 +). 
13, power consumption: 25 mW. 
: 14, environment temperature 25 ℃ ~ 55 ℃. 
15, temperature effect: 0.5% / 10 ℃. 
16, load resistance: DC (0 ~ 10) mA (0 ~ 1) k Ω;(4 ~ 20 mA Ω (0 ~ 600). 
17, connection cable: RVVP 3 by 28/0.15. 
18, explosion-proof grade: Exib Ⅱ 2 ct5 GYB03582U (number). 
19, with security grid model: ZW906 type. 
20 / electric remote transmitter: K5WI - type I or ESK - I (two-wire system). 
Six, transformation indicator:
Converter is actually change the height of the cone tube float into the corresponding scale of volume flow.On the output signal of points: there is local display and remote transmission signal output:
1, on-site display type: by in situ indicator of follow-up magnetic steel and the float inside the magnetic coupling, and turning, at the same time, through dial, electric pointer indicates that traffic at this time 
Type 2, intelligent remote transmission, by intelligent indicator of follow-up magnetic steel and the float inside the magnetic coupling, and the rotation, sensing magnetic steel and pointer at the same time, through A magnetic sensor to magnetic field changes into electrical signal, after the A/D conversion, digital filtering, microprocessor processing, D/A output, LCD liquid crystal display (LCD), to show the size of the instantaneous flow and cumulative flow.
Seven, structure, classification:
1, high temperature structure type (G)
High temperature structural type (G) is used for medium temperature is too high or too low and need to measure the rate of flow of pipe heat preservation and heat insulation measures of medium measure.High temperature structure is increased the measuring tube and the distance between the indicator to increase heat dissipation, increasing the thickness of insulation material, ensure the indicator work in allow ambient temperature range.Type selection for the "G".
G type metal pipe flow meter can measure the temperature - 80 ℃ to + 300 ℃ medium flow.
2, the structure of the device with damper (Z)
Damper is structured for flow meter inlet flow (pressure) unstable when the medium flow measurement, especially for the measurement of the gas.
3, the structure of the clamp cover model (T)
Clip model structure used for heating or cooling, such as the high viscosity and crystallization medium flow measurement.In the jacketed by heating or cooling medium, make the low boiling point and low solidifying point fluid evaporation and crystallization.
Import and export of heating medium connection, the standard to use HG20594-97 DN15 PN1.6 flange, other connection flange specification can be indicated with factories, jacketed level of pressure is 1.6 MPa.
Clip model see FA standard flowmeter flowmeter structure flange, dimension drawing.
4, high pressure type structure (Y)
High pressure type structure used for pressure is greater than the standard level of measured medium flow measurement.High pressure type structure as shown in the figure below.The recent series of FFM64 zui high pressure can reach 32 mpa.Additional high pressure type flowmeter can provide built-in magnetic filter, the installation height is 350 mm.FA, FB and FC zui pressure to 10 mpa.
Eight, product maintenance: 
1, in the long-term use process, the pipe will inevitably have a ferromagnetic impurity adsorption on the float, it would float jammed or affect measurement accuracy, need to clean them often float inside the sensor;If the installation of magnetic filter, also want to make regular cleaning. 
2, instrument indicator is equipped with electronic components, instrumentation connection or remove the shell and the screw to tighten, must ensure that shell sealing, to prevent impurities, or other material into the water, but also ensure the reliable earthing of the instrument housing. 
3, meters installed, in * times when using, should pay attention to: 
Open valve to avoid pressure impact spacing device to float against, causes the damage of instrument, must open the valve slowly! 
Measuring gas meter is equipped air damper, zui to large extent reduce the oscillation of the float;In order to ensure the stability of float, and can be installed in the export of instrument a throttle valve. 
4, for remote transmission type instrument, first of all to ensure the instrument connection right after, can live;For the dangerous situation, must choose explosion-proof type, use and install according to the requirements of explosion-proof. 
Nine, troubleshooting methods: 
1, check alarm value set size in the SU. 
2 d values cannot too big, check the deviation. 
The logical function, FUN, whether it is right.HA - A said cap is logical.LA -a said the lower limit is logic 
4, circuit board fault, replace the circuit board. 
5, if the LCD bar code instructions correct output without action, can check whether the external power supply and external power of the cathode is connected to the instrument power supply of the cathode. 
If metal pipe flow meter in use dithering, could be determined according to the extent of jitter is what range of jitter.Jitter is divided into slightly shaking, moderate jitter and violent shaking. 
1, the slight shaking: generally caused by fluctuations in medium.Can be used to increase the damping ways to overcome. 
2, moderate jitter: generally caused by medium flow state.Is often caused by unstable operating pressure of medium for gas.Can use voltage or current regulator devices to overcome or increase the instrument air damping. 
3, intense shaking, mainly due to the medium pulse, pressure instability or users are given gas pressure, temperature and flow of the operating state of inconsistent with the actual state of instrument, have bigger difference meter range.

10 and the points for attention during the installation: 
1, before installing the flowmeter, first the stolen goods, within the pipeline welding by impurities such as blowing clean, if the solid impurities in the liquid, should be installed between the valve and the straight pipe corresponding filter. 
2, shielding and grounding: in order to guarantee system of electromagnetic compatibility of the ideal, shielding and grounding is very important, especially the bus cable, to make the cable shielding as continuous as possible. 
3, for safety, cable to be in accordance with the requirements for routine ground as soon as possible. 
4, in dangerous places, to ensure that within the scope of the whole bus safety and danger all enough potential, such as matching, in this case, the multiple ground is very superior.

Eleven, flow parameter list:

Twelve, selection of coding:

13, design selection and order items:

1, according to the measurement of fluid is a gas or liquid, correct choose ZW - LZ series metal tube flowmeter.

2, be no corrosive choose normal flow corrosive choose corrosion type.

3, when placing order, please indicate the name of the measured medium, flow rate, pipe size and working pressure, temperature, density, viscosity, and so on and so forth.According to density of scale revised by the user, making special flow scale.

4, according to the measuring range of the measurement of body, applications, and choose the right type of specification varieties.If you have any special requirement of the flowmeter, company or calls, please contact the sales department.

After-sales service commitment:

1, from the date of signing of the contract, I in the way provided for products of the company offers free maintenance and maintenance service, commitment to lifelong maintenance service;

2, jiangsu wei measurement and control instrument co., LTD. Sales manager will be in regular contact with customers, understand the usage of products, and solve the problems of the customers to use in the process of produce, free of charge to provide technical support;

3 the man-made damage is found, the warranty period, our company is responsible for the maintenance, and the resulting maintenance fee;

4, product quality problems or are not satisfied with product, the user can choose unconditional return, wei tt&c don't charge any fees, appear quality problem, bear the freight back and forth.