Water level sensor, alose called hydrostatic pressure level sensors, submersible level sensors, which are submersible level sensors used for measuring the level of liquids (including corrosive liquids) in deep tanks or water in reservoirs. It provide accuracy and reliability across a wide range of applications. Based on the principle that the measured liquid static pressure is proportional to the height of the liquid, the advanced isolation type diffusion silicon sensor or ceramic capacitive Pressure Sensor is used to convert the static pressure into electrical signals, and then through temperature compensation and linear correction, into standard electrical signals (generally 4-20mA/1-5VDC). water tank level sensor, pressure level sensor, submersible level sensor, hydrostatic level sensor, water Level Transmitter Xi'an Gavin Electronic Technology Co., Ltd , https://www.gamicos-meas.com
The working principle of the cycloidal gear pump also utilizes the change of the seal volume between the teeth to realize the suction pressure oil. It is composed of oil pan (front and back covers), outer rotor (driven wheel) and inner rotor (driving wheel) eccentrically arranged in the pump body. The inner and outer rotors differ by one tooth, the inner rotor is six teeth in the figure, and the outer rotor is seven teeth. Because the inner and outer rotors are multi-tooth meshing, a number of sealed volumes are formed. When the inner rotor rotates around the center O1, the outer rotor is driven to rotate in the same direction around the outer rotor center O2. At this time, the seal volume C (the female part in the drawing) formed by the inner rotor tooth tip A1 and the outer rotor tooth valley A2 gradually expands with the rotation of the rotor, thereby forming a partial vacuum, Window b is sucked into the sealed chamber, to A1 ', A2' position, the maximum closed volume, then the oil absorption is completed. When the rotor continues to rotate, the oil filled sealing volume gradually decreases, the oil is squeezed, and the oil is discharged through the other oil distribution window a until all the other teeth of the inner rotor and the outer teeth A2 All engaged, the oil pressure is completed, the inner rotor per revolution, the inner rotor tooth top and outer rotor tooth valley formed by the seal of each volume to complete suction and pressure of oil each time, when the continuous rotation of the rotor is completed Pump suction and discharge work. Cycloid gear pump outer rotor tooth shape is arc, the inner rotor profile is short equatorial equatorial line, it is also known as the internal gear cycloid gear pump, also known as rotor pump. Cycloid gear pump has many advantages, such as compact structure, small size, small parts, speed up to 10000r / mim, smooth movement, low noise, higher volumetric efficiency and so on. Drawback is the large flow pulsation, the rotor manufacturing process is complex, so far, has been used powder metallurgy pressing. With the development of industrial technology, the application of cycloidal gear pump will be more and more Cycloid gear pump can be positive and negative, can be used for hydraulic motors.