In order to have an accurate measurement of the displacement of the cylinder, we usually rely on Displacement sensor Next, we mainly analyze whether the oil cylinder displacement sensor is built-in or external. What are the differences between the two settings?
If the electronic device of the displacement sensor inside the oil cylinder fails, only one electronic head needs to be replaced simply and quickly. The oil circuit of the hydraulic system will not be affected, so there is no need to drain the hydraulic oil. magnetostrictive displacement sensor The special type series of complex applications usually have special requirements for sensors. In order to meet these requirements, germanjet develops a special type of sensor, which can effectively integrate with the control system. The realization of all these benefits from a large and highly dynamic one magnetostrictive displacement sensor The development team also cooperated with germanjet's special electromagnetic compatibility testing laboratory and shock and vibration detection center.
Rust removal, oil removal and phosphating are carried out; the anticorrosive coating is mixed liquid with mass ratio of slurry ester to curing agent = 1.8-2.2:1; mixed liquid with mass ratio of unsaturated resin: unsaturated curing agent = 0.5-2.5:1; or mixed liquid with mass ratio of epoxy resin: epoxy curing agent = 1.5-2.5:1; Then roll on the roller for 1-10 minutes and vibrate on the shaker at the same time; then dry naturally at room temperature for 24 hours or heat cure at 50 ℃ - 200 ℃ for 2-6 hours. The invention thoroughly solves the problems of derusting, degreasing, removing impurities and improving the cleanliness of hydraulic working system of fuel tank, hydraulic oil tank and pipeline inner wall of domestic construction machinery, automobile and hydraulic workstation, and can achieve long-term anti-corrosion effect.
magnetostrictive displacement sensor It is a displacement sensor with high precision and long stroke absolute position measurement based on magnetostrictive principle. It adopts the internal non-contact measurement method. Since the active magnetic ring used for measurement has no direct contact with the sensor itself, it will not be subject to friction and wear. Therefore, it has the advantages of long service life, strong environmental adaptability, high reliability, good safety, and is convenient for system automation, that is, in harsh industrial environment (such as prone to oil collapse, dust or other pollution occasions) Normal operation . In addition, it can withstand high temperature, high pressure and strong vibration, and has been widely used in the measurement and control of mechanical displacement. It has a stroke of 3 meters or longer, a nominal accuracy of 0.05% f? S, a sensor accuracy of 0.02% F, s and a repeatability of 0.002% f? S when the stroke is more than 1 m. therefore, it is widely used in petrochemical, aerospace, electric power, water conservancy and other industries.
Oil cylinder is a power machinery in industrial control, which is a relatively independent industrial product. Both digital cylinder and hydraulic cylinder need to be equipped with electronic cylinder stroke sensor.
There are many choices for oil cylinder travel sensor, including contact type and non-contact type in terms of sensing form, internal type and external type in terms of installation mode, and analog output and digital output mode in terms of signal output specification.
There are two kinds of output forms of magnetostatic grating external oil cylinder displacement sensor: analog output and digital output. The analog quantity generally provides 4-20mA current signal, and the digital output forms are various, which are selected by users. A dual cylinder synchronous controller is widely used in hydraulic hoist of radial gate of hydropower station, with range of 3-12m, integrated display and control, strong lightning protection and anti-interference function, and good application effect.