Single flange diaphragm pressure liquid level transmitter

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Single flange pressure liquid level transmitter is made up of 3851 gp intelligent pressure transmitt…

Products overview:

ZW3851LGP seriesSingle flange diaphragm pressure liquid 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, this product has the advanced design principle, the variety specification is complete, installation convenient use, etc.Due to the aircraft appearance on the total integration of the current domestic zui is popular, 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:

ZW3851LGP series single flange diaphragm pressure liquid level transmitter is made up of ZWGP intelligent transmitter using capillary with stainless steel flange connection, 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:

ZW3851LGP series single flange diaphragm pressure liquid level transmitter is used to prevent the medium directly into the transmitter in the pipeline of the pressure sensor components, it is between the transmitter and capillary connected by the filled with fluid.Used to measure liquid, gas or liquid level, flow and pressure of steam, then transform it into a 4 ~ 20 ma DC signal output.Applicable medium is as follows:

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, the basic features:

1, by simulating "run" 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, using "dynamic state" 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 main features:

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:

1, the output signal: 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)

2, power supply: 12 ~ 45 v DC;

3, load characteristics:

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;

Quantity than: now or 100-1;

Resistance, : 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.

4, work environment: the environment temperature - 29 ~ 93 ℃ (analog amplifier);

29 ~ 75 ℃ (digital/intelligent amplifier);

- 29 ~ 65 ℃ (with display meter);

Environmental humidity 0 ~ 95%.

5, protective features: protection IP65;

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

The Ann model Exia II CT5.

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

Zui 8, the electromagnetic radiation: 0.05% value in a wide range, accept radiation frequency 27 ~ 500 MHZ, test voltage 3 v/m.

9, indicator (%) : LCD digital display accuracy + / - 0.2%.

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

11, installation location: diaphragm installed vertically, not likely to produce the zero error of less than 0.24 KPa, but can be modified by zero.

12, heavy volume: 3.9 Kg (not including attachments).

With remote transmission device, liquid level transmitter is applicable to the following conditions:

1, you need to high temperature medium from the transmitter.

2, corrosion transmitter sensitive element for measuring medium.

3, due to environment or measured medium temperature change and solidifying or crystallization.

4, replace the measured medium need strictly to purify the measuring head.

5, suspending liquid or high viscosity medium.

6, measuring head must maintain clean sanitation.

7, sealing pressure container.

Eight, use the matters needing attention:

Single flange pressure transmitter in the use process should pay attention to consider the following situations:

1, the measurement of liquid pressure, the remote transmission of pressure transmitter installation location should avoid the impact of the fluid (water hammer), in order to avoid the sensor damage of overpressure.

2, in far eastone winter freezing in the transmitter, pressure transmitter anti-freezing measures according to the required in outdoor transmitter, without pressure, fluid due to the icing volume expansion in the mouth, lead to the damage of sensors.

3, connection, cable through the waterproof connector (attachment) or round tube and screw down the sealing nut, such as in case of rain through the cable leakage into the transmitter inside the shell.

4, far eastone when measuring the liquid pressure in the transmitter, pressure transmitter take mouth should be open in the process piping pressure profile, in order to avoid precipitation product residue.

5, to prevent fluid of flange transmitter and corrosive or overheating of media contact, prevent the dross in intraductal deposit;

6, when measuring the pressure of gas, pressure mouth will open at the top of the process piping, flange level transmitter and also will be installed in the upper part of the process pipe so that the deposition of liquid pipelines of rapid injection to the process.

7, far eastone pressure transmitter to pay attention to the guide of sensor pressure tube to install where small temperature fluctuations;

8, remote transmission of pressure transmitter measuring steam or other high temperature medium, the need to connect with the buffer tube (coil) such as condenser, should not make the transmitter operating temperature more than limit.

Nine, remote transmission pressure transmitter type selection:

Far eastone pressure transmitter is based on the main body in the transmitter of additional remote transmission device conversion product, so the selection of work can be divided into two steps: first, determine the type of transducer main body (DP), measurement range and structure material, and then according to the requirement of on-site installation far eastone device type and size.Due to the parameters of the pump system (such as pouring the liquid temperature, viscosity, and the length of the capillary) is closely related to the performance of the transmitter, so in subject selection of category in the transmitter, no separate list to choose from.

Ten, selection of code:

Eleven, design selection and ordering information:

1, working pressure also depends on the selection of the specifications of the flange.

2, remote transmission device working temperature, the choice of types of liquid filling.

3, far eastone pressure transmitter is one side of the remote device by temperature effect, the output generated by the change.

4, static pressure and temperature, were measured in the maximum range.

5, far eastone pressure transmitter on one side of the capillary length is 1.5 meters, commonly length shoulds not be more than 3 m agreement to special cases.

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.