Single flange level transmitter

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Single flange level transmitter is a high performance of measuring instrument, used in industrial pr…

Products overview:

ZW3051L seriesSingle flange level transmitterIs the introduction of foreign advanced technology and equipment production of new type of transducer, the key raw materials, components and parts are imported, the whole machine after assembled and tested strictly, flange level transmitter has advanced design principle, variety complete specifications, installation convenient use, etc.And widely used two kinds of transducer (3051 with yokogawa EJA rosemount) the structure of the advantages, for the users to have the feeling that find everything new and fresh, at the same time with the traditional series of products can be directly replace on installation, strong commonality and replace ability.For the continuous improvement of the domestic automation level and the development, this series of products in addition to the design cabinet and delicate, more has introduced HART field bus protocol of intelligent function.

Second, the working principle:

ZW3051L series single flange level transmitter is also called the single flange level transmitter and measured with capillary connection between equipment becomes a single flange far eastone pressure transmitter, is a kind of by installing remote transmission device on a pipe or container to feel the pressure, the pressure inside by capillary pump silicone oil (or other liquid) to the body of the transmitter, then the transmitter inside the main body of the delta and amplification circuit board, to convert pressure or differential pressure 4 ~ 20 ma. DC signal output, and conform to the HART protocol with the hand of the operator, can communicate, to set up and monitor.

Applications:

ZW3051L series the main structure of the single flange level transmitter and pressure transmitter is the same, in order to adapt to different installation requirements, this series transmitter has many forms of remote transmission device for the user to choose from.The products are widely used in petroleum, chemical, electric power, food, paper making, municipal engineering and other industries.

Applicable medium:

1, high temperature viscous medium;

2, easy to be crystallized media;

3, with solid particles or suspended solids precipitation medium;

4, strong corrosive or toxic medium;

5, can eliminate the occurrence of pressure pipe leakage pollution environment;Using spacer can be avoided, because of the measuring signal is not stable, often need to supplement of spacer;

6, continuous accurate measurement interface and density;

7, remote transmission device can avoid different instant media fusion, so that the measured results truly reflect the actual situation of process changes;

8, hygiene demanding situations;

9, such as food, beverage and pharmaceutical industry production, not only requires the transmitter medium contact conform to the hygiene standards, and should be easy to wash, to prevent cross contamination of different mass media.

Four, basic features:

1, by simulating the running online examination, to guarantee the transducer working in extreme environment temperature, medium temperature and pressure (including positive pressure or vacuum), stable and reliable work.

2, USES the dynamic state of faces far eastone diaphragm structure, after the overload diaphragm would not be damaged;After long-term working accuracy will not change.

3, choice of welding and sealing structure of pump system rigidity, the eradication of the oil spill.

4, design the capillary combination of components, the capillary reliable protection in the field use is not easy to break.

Shape and size 5, variety, variety of the remote transmission device, and plenty of pouring liquid type, can meet the needs of the measured at various occasions.

6, can provide all kinds of special needs products, including high temperature, high vacuum range, fast response and long capillary length (3 m) or less far eastone pressure transmitter.

Five, the intelligent performance characteristics:

Single flange level gauge is the extension and development of the technology of pressure transmitter according to the different proportion of liquid in a linear relationship with different produced by high pressure principle, the implementation of the volume of water, oil and paste, accurate measurement and transmission of liquid height, weight.

1, indicating novel, intuitive reading and eye-catching, observing the direction of the indicator can be based on user need to change the point of view.

There were 2, simple structure, moving or elastic element, so stay on sex is extremely high, little maintenance.

3, installation is convenient, built in especially shows the characteristics of the structure, without any special tools.

4, easy to adjust, zero and span two potentiometer can be zero within the scope of the liquid level detection effectively any migration or range change, two adjustment each other.

5, wide range of USES;Suitable for high temperature and high pressure, strong corrosive medium level measurement.

6, large measuring range, not restricted by storage tank height.

7, indicating device, and is completely isolated measured medium, good sealing, high reliability, the use of safe.

8, have the ability to safety explosion protection and isolation and can be applied to all kinds of dangerous sites.

9, with anti blocking design can be realized to paste medium level measurement.

10, fine unique zero, full range, nonlinear compensation, guarantee conditions of use within the scope of the precision, good stability for a long time.

Six, the technical parameters:

Output signals: 4 ~ 20 ma DC two wire (simulated) two wire 4 ~ 20 ma digital signal superimposed on the DC signal, the linear output or prescribing selected by the user.(smart)

Power supply: 12 ~ 45 v DC;

Load characteristic:

Power supply: < 0.005% output range/V;

Load impact: when power supply stable, without load effect;

Accuracy of measurement, calibration range of plus or minus 0.1%, plus or minus 0.2 standard accuracy is + / - 0.2%, if choose other precision in the model selection of the order, please specify;

Range than: 10:1 or 100-1;

Damping: usually can be adjustable between 0.1 ~ 16 seconds, when the pump inert liquid or remote transmission device, the time constant will increase;

Start time: < 2 seconds, do not need to preheat.

Working environment: the environment temperature - 29 ~ 93 ℃ (analog amplifier);

- 29 ~ 75 ℃ (digital/intelligent amplifier);

- 29 ~ 65 ℃ (with display meter);

Environmental humidity 0 ~ 95%.

Protective features: protection IP65;

Explosion-proof type, flameproof Exd II BT4-6;

The Ann model Exia II CT5.

Static effects: zero error: plus or minus 0.5% zui limit, in a wide range for 32 mpa in the pipes under pressure by zero calibration.

Electromagnetic radiation effects: 0.05% zui value in a wide range, accept radiation frequency 27 ~ 500 MHZ, test voltage 3 v/m.

Indicator (%) : LCD digital display precision of + / - 0.2%.

200 hz vibration impact: any direction vibration, plus or minus 0.05% / g.

Installation location: diaphragm is not installed vertically, the zero error of less than 0.24 KPa may be produced, but can be modified by zero.

Weight: 3.9 Kg (not including attachments).

Seven, liquid level transmitter specification:

1, the structure:

By differential pressure transmitter, capillary and belt of flange seal diaphragm.Seal diaphragm role is to prevent the pipe in the medium directly into the differential pressure transmitter, it is between the transmitter and by filling of liquid (usually use silicone oil) capillary connected, when diaphragm pressure to produce tiny deformation, deformation or frequency through capillary liquid is passed to the transmitter, the transmitter converts the output signal after processing.

2, appearance inspection:

A, flange check: check the flange connected to the equipment section of the seal are in good condition;Flange and capillary, capillary and itself if there is a connection part of the transmitter and capillary liquid leakage;Flange diaphragm deformation, damage, corrosion, scaling and other adverse conditions.

B, the transmitter inspection: check whether there is any damage, corrosion and other failure on transmitter shell, handle in time when problems found.

3, acceptance:

A, open the cover in the transmitter, check the sealing ring is damaged, if the damage to change in time;Check the circuit boards and other components are in good condition.

B, check the wiring of transmitter are in good condition.

C, disconnect the power supply, wire, insulation resistance checks, with a 500 v megohmmeter check transmitter terminals and shell, the insulation resistance between the resistance value should be greater than 20 m above.

4, debugging, checking

In order to guarantee the measure precision of the transducer, a capillary cannot be apart, so check to check with flange transmitter;Before installation, can use pneumatic analog signals and calibrate the HART com.

B, zero and span adjustment steps: zero and range of output, so that it is within the scope of permissible error.Continuous pressure, with the range of 0%, 25%, 50%, 75%, 150% of the pressure calibration, when pressure is stable after the record on the standard ammeter displays the current value and do return error checking.If calibration error exceeds permissible error range, should readjust the check.Adjusting method when operated by HART, see HART instructions accordingly.

4, installation:

A, far eastone flange installation:

High and low pressure on both sides of the flange should be installed correctly, can't put wrong;To reduce the influence of environment temperature difference, can be high and low voltage side of capillary bundle together, and fixed to prevent the wind and the influence of vibration and so on (super long section of the capillary volume in fixed together).Be careful not to damage the surface of the liquid membrane.Don't distort, extrusion capillary, don't put too much pressure to it.

B, the installation of transmitter ontology: use the installation bracket, the transmitter ontology is installed on the pipe diameter of 50 mm.Can be installed in horizontal pipe and the vertical piping installation.

5, note:

A, the four bolts fastening measuring capacitance room, connecting the capillary and let room part of the set screw is loose, liquid sealed to prevent leaks, instrument damage.

B, wiring should avoid large capacity transformer, motor or power with power interference sources;Wiring should disconnect the power supply interface of dustproof plug;Thread department should undertake waterproof processing (waterproof processing should be used when no hardening of silicone sealant series);To prevent interference, and other signal cable should avoid power cable through the same cable protection tube;For explosion-proof type instrument, in order to ensure the explosion-proof performance, must be in accordance with the relevant provisions of the wiring.

Eight, the matters needing attention when using:

Is a commonly used due to the transmitter, in a lot of industry temporary have must be used.Users in the application of time have a lot of achievement is a need to know, if not careful is very easy in application of formation damage.So what is the detailed way?Then to explain it in detail.

1, when measuring the pressure of the gas, pressure mouth will open at the top of the process piping, and equipment in the upper part of the process pipe so that the accumulation of liquid pipelines of hurtling into the process.

2, connection, will discuss (attachment) or round cable through the waterproof tube and screw tight seal nut, in case of rain through the process such as cable leakage into the transmitter inside the shell.

3, in the summer when frozen, device in outdoor transmitter anti-freezing measures must be adopted, to prevent bring pressure, fluid because of ice volume shrinkage in the mouth, causing damage to the sensor.

4, the measurement of the liquid pressure, flange level transmitter device status should be to prevent liquid hit the scene (that is, water hammer), so that the sensor overvoltage damage.

5, pressure pipe of a watch for sensor devices in the temperature stability of small space.

6, measurement of steam or other medium at low temperature, the need to connect with the buffer tube (coil) such as condenser, shouldn't make the task of transmitter temperature beyond the limit.

7, in the measurement of liquid pressure, pressure should be open in the positive, process piping to prevent accumulation slag deposition.

8, to avoid overheating and corrupt or media war, but also avoid the waste accumulated in the ducts.

Eleven, selection of coding:

Twelve, design selection and ordering information:

1, the model selection according to specification table according to the need to make sure.

2, selection of specifications in the table Numbers, symbols must be fill in clear, accurate.

3, if you have positive and negative migration, must indicate the migration amount value.

4, differential pressure transmitter to match three valve group, need to be indicated separately.

5, when far eastone transmitter of choose and buy, should also be based on different remote flange selection table according to the need to be sure.

6, if the remote transmitter should be used in vacuum and high temperature occasion, special label when you order.

7, contact medium type O sealing ring material is rubber, fluorine rubber, etc.

8, no special note, the factory when the liquid silicone oil.

Ten, after-sales service commitment:

1, our company sold by liquid level transmitter 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.