A small digital display pressure transmitter

ZW316S seriesA small digital display pressure transmitterSmall volume, suitable for small space to install, direct installation process, good temperature characteristic, comprehensive precision is high.The machine after assembled and tested strictly, this product has the advanced design principle, variety complete specifications, installation convenient use, etc.Due to the aircraft appearance on the total integration of the current domestic zui is popular, is suitable for the domestic automation level unceasing enhancement and development of high sensitivity, high precision, strong resistance to overload ability.Imported sensors, sensor and amplifier circuit of highly integration;All stainless steel as a whole, do not need to adjust circuit zero and gain;Anti-interference ability is strong, resistant to acid and alkali, long-term, stable and reliable.

Second, the working principle:

ZW316S series fine small digital display pressure transmitter using diffusion and ion implantation technology form resistance and connect ChengHui stone bridge, with micro mechanical processing technology in the electrical bridge formation pressure sensitive film.When the pressure on the diaphragm, resistance to change and produce a is proportional to the applied pressure of the linear output signal.We are on the wheatstone bridge with dc power supply, can produce a dc voltage signal output.After a second crossover, realizes the two wire system 4 ~ 20 ma output.

Applications:

ZW316S series fine small digital display pressure transmitter components and parts are imported high quality diffusion silicon type, ceramic pressure sensor as a sensitive element, using special integration module, fine nonlinear compensation of temperature drift, zero, and, for the liquid, gas, steam medium pressure changes such as the accuracy of the measuring and transmitting.

Four, the main features:

1, good stability, full, zero long-term stability can amount to 0.2% FS/year.Within the scope of the compensation temperature 0 ~ 70 ℃, the temperature drift less than 0.2% FS, throughout the allowed working temperature range is less than 0.5% FS.

2, with reverse protection, current limiting protection circuit, when the installation is negative answer the reverse will not damage the transmitter, abnormal transmitter automatically when current limit within 35 ma.

3, solid structure, no moving parts, high reliability, long service life.

4, from wind to water, oil can be high precision measurement, not affected by the quality of the measured medium size.

5, easy installation, simple structure, economy is durable.

Five, the technical parameters:

Measuring range: 0-10 kpa ~ 0 to 40 mpa;

Overload: standard range 2 times;

Pressure form: pressure, differential pressure table;

F. S level of accuracy: 0.5%;

The power supply voltage: 24 VDC;

Load resistance: 500 Ω or less;

Measuring the pressure of medium: steam or gas, liquid;

Long term stability: plus or minus 0.2% f. S/year;

Environmental relative humidity: 0 ~ 95%;

Compensation temperature: 0 ~ 70 ℃;

Working temperature: - 10 ~ 70 ℃.

Structure features:

Shell: all stainless steel body;

The main structure material: 2.5 Mo ni cr - 12-31618;

Pressure interface: M20 x 1.5;

1 kg weight: regular, belt type header 1.2 kg.

Six, the debugging method:

Open the HSM joint, unscrewed the stainless steel pipe, can see zero and full range resistor, an external power supply and the current meter (0.2 or above), standard can be adjusted, the steps are as follows:

1 in the absence of pressure transmitter, adjust the zero resistor, make the output current of 4 ma,

2 pressure transmitter to full scale, adjust the full range resistor, make the output current of 20 ma,

Three steps above two or three times repeatedly, until the signal is normal.

The four adjustment, tighten the protection cover.

Seven, note:

1, who supply products with instruction manual and the certificate of approval, including product number, technical parameters, production date, etc., please check carefully, lest use wrong.

2, do not direct extrusion transducer diaphragm with hard object, so as not to damage the transmitter.

3, when installation should be according to the product connection method and the thread type, check whether the interface is consistent with the product interfaces, connection should be tighten slowly when, can't add torque directly to the transmitter on the shell, only on the pressure of the interface the six-party should be added.

4, connect the power supply shall be in strict accordance with my company connection wiring instructions.

5, side to overload pressure shall not exceed 200% of the range.

Found in 6, the use of exception, should turn off the power and stop using, check, or directly to our technical department.

7 should be restored the original packaging, transportation, storage, stored in a cool, dry and ventilated warehouse.

8, replacement for one year.

Eight, selection of code:

Nine, design selection and ordering information:

1, the transmitter model according to the selection of 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, transducer based on 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.

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

After-sales service commitment:

1, our company sold 316 series product quality problem within 12 months, 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.