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Urea pump pressure sensor: What are the characteristics of the urea pump pressure sensor
Publish Time：
2025-08-14
Sensor technology is one of the indicators of the development level of modern science and technology, and the urea pump pressure sensor technology is an important branch of sensor technology.
Sensor technology is one of the indicators of the development level of modern science and technology, and the urea pump pressure sensor technology is an important branch of sensor technology.
Urea pump pressure sensor: the sensor technology is one of the signs of the development level of modern science and technology, and the urea pump pressure sensor technology is an important branch of the sensor technology. At present, various types of urea pump pressure sensors, such as diffused silicon, capacitor type, silicon sapphire, ceramic thick film, metal strain gauge type, etc. Widely used in various industries and scientific and technological fields of national production. The following is a brief introduction to the characteristics and differences of some commonly used urea pump pressure sensors.
The pressure sensor of the corrosion-resistant ceramic urea pump has no liquid transmission, and the pressure directly acts on the front surface of the ceramic diaphragm, causing slight deformation of the diaphragm. Thick film resistors are printed on the back of the ceramic membrane and connected to a Wheatstone bridge (closed bridge). Due to the piezoresistance effect of the varistor, the bridge generates a highly linear voltage signal that is proportional to the pressure and also to the excitation voltage. The standard signal is calibrated to 2.0/3.0/3.3 mv for different pressure ranges.
Diffuse Urea Pump Pressure Sensor. The pressure of the measured medium directly acts on the diaphragm (stainless steel or ceramic) of the sensor, so that the diaphragm generates micro-displacement in direct proportion to the medium pressure, thus changing the resistance value of the sensor. The electronic circuit detects the change and converts and outputs a standard measurement signal corresponding to the pressure.
Piezoelectric materials mainly used for piezoelectric sensors include time, sodium potassium tartrate and potassium dihydrogen phosphate. Where strain (silica) is a natural crystal in which piezoelectric effects are found. Within a certain temperature range, the piezoelectric property always exists, but after the temperature exceeds this range, the piezoelectric property completely disappears (this high temperature is the so-called "Curie point"). With the change of stress, the electric field changes slightly (i.e. the piezoelectric coefficient is relatively low), so it is gradually replaced by other piezoelectric crystals.
Features of urea pump pressure sensor: 1. The range and function of the sensor are further expanded, and basic parameters and special parameters can be measured to meet the needs of different occasions. The sensor sensitivity and measurement accuracy are also improved. For weak signal measurement, various signals can be calibrated and compensated, and measurement data can be stored as required. Improve the stability and possibility of data measurement, reduce the interference of external environment on the output of pressure sensor of urea pump, and measure selectively. It can realize self-diagnosis function, timely and accurately lock faulty parts and quickly identify fault state, so as to solve some problems that cannot be realized by hardware. The signal output form and interface selection are more diversified, and the communication distance is greatly improved.
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Nanjing Wotian Technology Co., Ltd. was established in 2005. It is a national high-tech enterprise, a private technology enterprise in Jiangsu Province, a national level specialized and innovative "little giant" enterprise, and an excellent private enterprise in Jiangning District; The company has been rated as Jiangsu Engineering Technology Research Center, Nanjing Engineering Research Center, Nanjing Enterprise Technology Center, and Nanjing Postdoctoral Innovation Demonstration Base; It is the unit responsible for formulating three national standards.
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