Diffused silicon pressure transmitter

The diffused silicon pressure transmitter is a relatively compact, lightweight, and low-priced product among pressure transmitters. It has the characteristics of easy installation, stable performance, and reliable operation. It is widely used in positive and negative pressure measurement environments. The temperature sensing element adopts Imported diffused silicon or ceramic core components, the sensor is composed of an electronic amplifier to convert the measured signal into an output signal. The diffused silicon pressure transmitter can be used with a digital display pressure gauge, or with an automatic adjustment system or Used in conjunction with computer systems, diffused silicon pressure transmitters are widely used in petrochemical, steel, electric power, light industry, environmental protection and other industrial fields to achieve gauge pressure, negative pressure or absolute pressure measurement and control of various fluid pressures. And it can be used in various harsh and dangerous environments and corrosive media.
Technical specifications of diffused silicon pressure transmitter
Measuring range ~
Accuracy level
Ambient temperature ~ ℃
Medium temperature ~ ℃ Temperature compensation ~ ℃
Long term Stability better than years
Working voltage
Output signal two-wire system/three-wire system
Range migration can be done to the standard range
Vibration affects any axis, / is
Transmitter protection level
Product features of diffused silicon pressure transmitter
Strong resistance to overload and impact, the overpressure can reach several times the measuring range, even if the measuring element is directly hit with a hard object, it will not cause damage Damage, and has no impact on the measurement accuracy
High stability, better than full scale every year, this technical index has reached the level of intelligent pressure instruments. Small temperature drift, because the intermediary fluid in the pressure measurement element is eliminated, the sensor Not only does it achieve high measurement accuracy, but it is also minimally affected by temperature gradient
The diffused silicon pressure transmitter has wide applicability, easy installation and maintenance, and can be installed at any location.
High sensitivity The sensitivity factor of the diffused silicon sensitive resistor is ~ times higher than that of the metal strain gauge, and its full-scale signal output is around 100%. It has good adaptability to interface circuits and its application cost is correspondingly low. Because of its low input excitation voltage, large output signal, and no loss of mechanical moving parts, the resolution is extremely high.
The elastic deformation of the highly reliable diffusion silicon sensitive diaphragm is on the order of micro-strain, and the maximum displacement of the diaphragm is on the order of microns, with no mechanical wear, no fatigue, and no aging. Long mean time between failures, stable performance and high reliability.
What you need to know when selecting a diffused silicon pressure transmitter
When choosing a sensor transmitter, users should first determine the absolute pressure or negative pressure relative to the differential pressure of the gauge pressure relative to the local atmospheric pressure. Variety. If measuring liquid level, also determine whether the level is above free atmospheric pressure or sealed container pressure. If you measure the liquid level in a sealed pressure vessel, you should choose a differential pressure product.
When determining the product range, considering the absolute safety of the product, it is generally appropriate to choose the working pressure value within the standard range value. The overload pressure caused by possible abnormal conditions in the entire measurement system shall not exceed the maximum allowable overload of the product. When measuring dynamic pipeline liquid pressure, the water sag effect should also be considered, and the product load should be appropriately increased. You can also consult Huaneng instrument technicians.
The accuracy selection level is divided into multiple parameters. The higher the level, the more expensive the price. Users can require each item and a certain single parameter accuracy index according to the detected working conditions, so as to achieve higher accuracy requirements at a lower price. The three accuracy indicators given by the product are calculated using the international least squares method or the end-based translation method. When selecting a sensor. The accuracy level should be determined based on the maximum error option assigned to the sensor by the measuring system. Sometimes the additional error caused by zero drift and full-scale temperature coefficient should also be considered.
Use temperature range products have been linearly temperature compensated before leaving the factory. Some series of transmitters carry out comprehensive temperature compensation after assembling the circuit. The compensation range is marked in the individual product introduction. If users have special requirements, they can negotiate with our company. For users who use a wide temperature range and require high overall accuracy, software can also be used to perform temperature error correction in secondary instrument data processing. If used beyond the compensation zone, the temperature coefficient index may exceed the standard, but it can still be used. Working in the extreme temperature zone for a long time will greatly shorten the product life.