High temperature resistant pressure transmitter

ZW308 seriesResistance to high temperature pressure sensor chosen as the signal measuring element, pressure measured medium after the heat dissipation structure on the transmitter is passed on to the sensor, the high accuracy signal processing circuit is located in the stainless steel casing, the sensor output signal is converted into a standard output signal.The entire product components, semi-finished and finished products after the strict test and screening of ageing, stable and reliable performance, make the product, when used in high temperature and medium pressure measurements can long-term and stable work.

Second, the working principle:

ZW308 series high temperature resistant 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:

ZW308 series high temperature resistant pressure transmitter is the integration of all stainless steel flat membrane structure, especially for food, medical, pharmaceutical and health industry.Sensor interface has clamp, M27 x 2, flange can choose.The sensor plane membrane structure to prevent scale formation, not health and viscous liquid blocking problem.Widely used in food, pharmaceutical, brewing, and other areas of the process control.Its industry applications such as the following:

1, food hygiene industry;

2, pulp and paper industry;

3, water level measurement;

4, cans level measurement;

5, pipeline level measurement;

6, pharmaceutical and biological products processing.

Four, the main features:

1, with high precision, high stability, corrosion sensing diaphragm.

2, special assembly structure, zui large extent reduce the cavity pressure transmitter.

3, apply various easily blocked, need to keep health, or to clean the environment pressure measurement.

4, connection mode diversity, it is suitable for a variety of industrial and mining.

5, measured a variety of media.

Five, the technical parameters:

1, clean the planar isolation diaphragm, in line with international health standard; 3 a

2, use ceramic capacitance pressure sensor or diffusion silicon pressure sensor;

3, range: 0-4 kpa ~ 35 mpa;

4, power supply: 15-36 VDC;

5, temperature drift: 0.02% FS / ° C;

6, accuracy: 0.25%;

7, shell protection: IP65;

8, electrical connections, cable waterproof box type 2088 haltzman joint shell optional;

9, temperature: electronic circuit board work in - 40 ~ 85 ℃;Sensitive components work in - 40 ~ 104 ℃;Storage temperature - 40 ~ 85 ℃;With digital display - 25 ~ 65 ℃ (normal operation);- 40 ~ 85 ℃ (no damage);

10, relative humidity: 0 ~ 95%;

11, stability, zui range in a wide range of plus or minus 0.25% / 6 months.

12, vibration impact: in any axis upwards, frequency is 200 hz, error in a wide range of zui range of plus or minus 0.05% / g;

13, load effect: as long as the input voltage is higher than 12 v in the transmitter, the load work area without load;

14, installation location: zui can produce no greater than 0.25 kPa zero error, this error can be eliminated by correction, the range have no effect;Measure the ontology flange rotation relative to no effect.

Six, matters needing attention when using:

1, the winter freeze occurs, 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.

2, 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.

3, when measuring the pressure of the gas, apply pressure to open at the top of the process piping, and health type transducer is installed in the upper part of the process pipe so that the deposition of liquid pipelines of rapid injection to the process.

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

5, pay attention to the guide sensor pressure tube to install where small temperature fluctuations.

6, when measuring the liquid pressure, health type pressure transmitter installation location should avoid the impact of the fluid (water hammer), in order to avoid the sensor damage of overpressure.

7, when measuring the liquid pressure, pressure pipe side should be open in the process, in order to avoid precipitation product residue.

8, pressure transmitter to prevent contact with corrosive or overheating of medium, prevent the dross in intraductal deposition.

Seven, selection of code:

Example: ZW308 series pressure transmitter:

Standard, M20 thread x 1.5 interface of stainless steel materials, fluorine rubber seal, the precision of 0.5, gage pressure range 0 ~ 1.6 MPa with linear meter.

Note: the minimum measuring range is: 0 ~ 20 kpa, 0 to 35 mpa, largest super voltage measurement range is: minimum 0 ~ 10 kpa, 0 ~ 60 largest mpa.

Eight, design selection and ordering information:

1, the sensor material;

2, explosion-proof situations;

3, connecting head materials and connection mode;

4, seal materials;

5, precision;

6, range scope;

7, whether or not to bring additional options.

After-sales service commitment:

1, our company sold 308 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.