Intelligent type high temperature pressure transmitter

ZW3851 seriesIntelligent type high temperature pressure transmitterOf key raw materials, components and parts are imported or joint venture, the whole machine after assembled and tested strictly, it has advanced design principle, complete specifications, installation convenient use, etc.Due to the 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.

Second, the working principle:

ZW3851 series intelligent temperature type pressure transmitter is by measuring the principle of the diaphragm and on both sides of the insulation slices on the electrodes of a capacitor.When inconsistent pressure on both sides, to cause measuring diaphragm displacement, the displacement and stress is directly proportional to the difference, so both sides capacitance range, through the link of oscillation and demodulation, is converted into is proportional to the pressure signal, after temperature compensation and the linear correction, converted into a standard electrical signals.

Applications:

ZW3851 series main body structure of the intelligent type high temperature pressure 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.

Four, 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.

Five, 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).

Six, installation requirements:

1, before installation, please read carefully the product specification, and check the related information of the product.

2, the transmitter shall be installed in ventilated, dry, no corrosion, shady and cool place, such as outdoor installation should add protective cover, avoid sun and rain, avoid transmitter performance degradation or failure.

3, the transmitter is a precision instrument, avoid strong shocks, throw during installation.

4, according to the wiring diagram properly connected.

5, pay attention to protect transmitter which leads to the cable.When used in industry site, it is recommended to use metal protection or overhead.Do not loose cable leads to the sealing nut, to avoid moisture to enter.

Seven, note:

1, when I received the product, please check whether the packing is in good condition, and check whether transmitter type and specification is consistent with you choose and buy products;

2, or the use of measuring not compatible with stainless steel, medium;

3, ensure the power supply voltage conform to the requirements of the probe power, the power of positive and negative with the positive and negative terminal of the product, to ensure the pressure source high pressure within the range of the product;

4, in the process of pressure measurement, should slow pressure and discharge pressure, avoid immediately to the most high pressure or fell to a low pressure;

5, when removing probe to ensure that the equipment has been disconnect the pressure source, in order to avoid the media overflowing accidents occurred.

6, this product not explosion-proof, used in explosion-proof area can cause serious bodily injury and major material loss;

7 belongs to precision devices, sensors, users in the use, please do not disassemble by oneself, can't touch the diaphragm, lest cause damage of product.

Eight, selection of code:

Nine, design selection and ordering information:

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

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

3, according to the user specified range checking.If the user has no rules, set at maximum range in the transmitter, the check will be carried out under room temperature and atmospheric pressure.

4, need labeling station number, should be indicated when ordering.

After-sales service:

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.