Split type mass flowmeter

ZW - CMF seriesInside the sensor has two parallel vibration u-shaped tube, coil, equipped with central China at both ends is equipped with coil of vibration picking flowmeter directly measured through the medium of mass flow meter, can also be measured medium density and indirect measurement of the temperature of the medium.Due to its superior performance, make it high measurement accuracy, low requirement to the fluid state, the pressure loss is small.A variety of specifications of the instrument can be directly obtained by measuring the quality of the liquid or slurry flow, volume flow, density, temperature, without artificial calculation or estimate.

Second, the working principle:

ZW - CMF series split type structure of the mass flowmeter is double pipe structure, its measurement principle is applied to double bend up detection by measuring the mass flow in the pipeline.In the process of industrial production, sometimes need to measure the mass flow of the fluid, such as chemical reaction of material balance, heat balance, ingredients, etc., all need to measure the mass flow of the fluid.Mass flow rate is to point to in unit time, through the closed pipeline section in the quality of the fluid.

Three, structural components:

Flow meter by the sensor, transmitter, cumulative Numbers indicate three parts, etc.Sensor by sensing tube, electromagnetic drive, and electromagnetic detector of three parts.Electromagnetic drive the sensor with its natural frequency of vibration, and the flow of imported make u sensor produces a distorted, under the action of a phase difference on both side of it, the phase difference is proportional to the mass flow rate.Electromagnetic monitor transform the phase difference for a corresponding level signal into transmitter, after filtering, integral, amplification and dealing with power.Into is proportional to the mass of 4-20 ma analog signal and a range of two forms of output frequency signal.

Four, applications:

ZW - CMF series separable mass flowmeter is mainly used to measure the mass flow, volume and density in the medium, at the same time, it also can measure flow rate and total volume, medium temperature, moisture content, the alcohol content of alcohol, are uniformly mixed in the two kinds of liquid concentration, technological process of raw material ratio, etc.It is mainly suitable for the following industries:

1, the oil industry, such as crude oil output measurement, moisture content, the single well production and transportation of crude oil metering;

2, the chemical industry;

3, the food industry;

4, papermaking industry, such as pulp measurement;

5, textile printing and dyeing industry.

6, energy transmission measurement, such as liquefied gas metering;

7, the environmental protection industry, such as sewage treatment;Desulfurization process of slurry density.

Five, the main features:

1, the direct measurement of mass flow rate of the pipe inner fluid:

High measurement accuracy and repeatability, but in a larger range within the scope of direct measurement of fluid mass flow;The accuracy of the measurement of the flowmeter are high mass flow measurement accuracy of 0.2;

2, work stable and reliable:

Flow measurements of the interior of the tube without obstacles and moving parts, thus high reliability, long service life;

3, to adapt to the fluid surface width:

In addition to the general's uniform fluid viscosity, it can also be measured high viscosity fluid (honey, slurry, etc.);Fluid parameters of a single solution can be measured not only, still can measure multiphase flow;Whatever medium is laminar or turbulent, does not affect the measurement accuracy;

4, a wide range of applications:

Applicable to petrochemical, chemical, metallurgical, pharmaceutical, paper making, food, energy and environmental protection industries, in the detection and control of process and custody transfer metering and other occasions, gained widespread application;

5, a variety of real-time online measurement and control work:

In addition to the mass flow rate, fluid density and temperature can be directly measured.Intelligent flow transmitter, can provide a variety of parameter display and control functions, is a collection of multi-function as one of the flow measurement and control instrument;

6, good scalability:

According to user needs, specialized design and manufacture of special specifications and special features of the flowmeter;But also for remote monitoring operation, etc.

Six, the technical parameters:

1, accuracy: + / - 0.2% + (zero stability/instantaneous mass flow (99%);

2, repeatability, plus or minus (1/2) x [+ 0.2% (zero stability/instantaneous mass flow (99%);

3, density range: 0.2 g/cm3 ~ 3.5 g/cm3;

4, density of accuracy: + / - 0.002 g/cm3;

5, temperature range: 60 ℃ ~ + 200 ℃;

6, temperature accuracy: + / - 1 ℃;

7, current output: 4 ma ~ 20 ma;

8, frequency output: 0 hz ~ 10 KHZ.

9, batch control relay contact capacity: 24 v / 0.1 A;

10, batch control relay contact forms: normally open (user ordering can be changed to normally closed);

11, fluid temperature: - 40 ℃ ~ + 200 ℃;

: 12, working environment temperature 0 ℃ ~ + 40 ℃.

13, work environment humidity: 90% RH or less, the condensation;

14, atmospheric pressure: 86 kpa to 106 kpa.

15, transmitter power supply requirements: this type of power supply voltage AC (220 + / - 10%) V or Hz (50 + / - 5%), composite power supply voltage (24-10%) V;

The machine power: < 15 w.

Seven, installation requirements:

Flowmeter is a high precision measuring instrument, in order to ensure measurement accuracy, to ensure the installation of environmental requirements:

1, sensors (a table) and the transmitter (secondary) shall not be installed in an area where have strong magnetic interference, otherwise it will influence the signal of circuit, which affect measurement accuracy;

2, sensors (a) installation of the pipeline cannot have other vibration interference;

3, the need to be installed outdoors, to pay attention to the environmental temperature zui high and low zui, should consider wind block rain, prevent the wind rain, in order to improve the working life of the meter;

4, the transmitter (secondary) Ann type flowmeter should be placed on safety or suitable control room;

5, the Ann type flowmeter sensor (a table) and the transmitter (secondary) consists of ten core shielded cable connection between;

Eight, installation method and matters needing attention:

1, the horizontal line

Main body downwards, measuring liquid, exports must be above 0.8 m high;

2, the main body in inversion

Since the emptying, measuring slurry, containing solid export must be higher than the flowmeter zui high 0.8 meters;

3, flag type installation (measurement)

Since the emptying, measuring liquid or slurry, must be from the bottom to upper.

Nine, fault handling:

General flow meter will not fail, failure also unimportant, careful analysis the reason can the problem be solved, such as working condition if there is any change, ever, isn't it just check back to using and so on, the following simple introduce several kinds of faults and handling:

1, a hardware failure:

If a big error, integrator show bright, or appreciation, the phenomenon such as display a blank, the reason:

A.Installation is not standard, can be directly lead to flowmeter zero drift, such as are installed in the pump outlet, the sensor support strength is not enough, connecting flange welding undeserved produce stress signals, cable affected by electromagnetic interference.

B.Connection problem

If a display is not bright, should check the integrator power cords, if the fuse was burned, shall confirm the input voltage with the standard nominal value, ac/dc form are consistent.And if appear integrator with the increase of flow rate, should check the integrator connection, if the integrator is equipped with is/reverse procedure, check the wiring of the flow meter, for flow meter wiring is not correct, will make the integrator in reverse flow without increasing.

C.Process medium change

If measured medium gas entrapment, gasification or two phase flow phenomena, such as alarm display will appear in the transmitter, serious when, sensor to stop working.

D.Transmitter failure.

E.The sensor failure.

F.Pipe purging.

2, software problem:

For just finished checking the flow meter installed before use must pay attention to under the current conditions of zero calibration, must ensure that the meter is filled with medium after close the cut-off valve on both ends to zero calibration, there are many kinds of, specific methods, hａnd operator panel operations and use ProLink Ⅱ software.

A.The zero calibration is wrong;

B.Parameter Settings;

C.The power of the pulse wave;

D.The I/O configuration is wrong (it is important to note that range);

E.Wrong operation.

Ten, the flow range:

Eleven, appearance installation size:

Twelve, selection of coding:

Designing order selection guidelines:

1, products: specify model standard, if any, please live in wei and control sales hotline advisory prices, details!

2, technical support, if not specified product specifications, please put the working condition of requirements, design drawings, technical specifications, fax or to us.

3, product orders for parameters: size (DN), nominal pressure (Mpa), temperature (℃), the connection way (thread, flange, etc.).

4, offer confirmation: the company provide price list and technical standard specifications to customers to confirm, in the technical aspects to confirm before you draw up a contract.

5, quality requirements, quality standards, the supplier is responsible for the quality conditions: according to the relevant state quality standards.

After-sales service commitment:

1, our company sold by mass flow series products within twelve months appear quality problem, is responsible for free maintenance.

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

3, the warranty period, such as user improper use, damaged products, my company is responsible for the maintenance, charge damage parts cost.

4, after the warranty period appear quality problem, my company is responsible for the maintenance, charge damage parts cost.

5, such as user need to my company site services, to users in the province I company service personnel to reach the site within 12 hours, fujian association of foreign languages and user reach the site within 48 hours.