The correct use of Door Window Sensor and routine maintenance
Door Window Sensor use process should pay attention to consider the following conditions:
1, to prevent the transmitter and corrosive or overheated media touch;
2, to prevent the sediment in the catheter deposition;
3, measure the liquid pressure, the pressure should be opened in the pipeline side of the pipeline to prevent the accumulation of slag;
4, the measurement of gas pressure, the pressure should be opened at the top of the pipeline, and the transmitter should also be installed in the upper part of the pipeline in order to stack the liquid simply into the process pipeline;
5, the pressure tube should be installed in the place where the temperature shaken;
6, measuring steam or other high-temperature medium, the need to take the buffer tube (coil) and other condenser, should not make the transmitter operating temperature beyond the limit;
7, the winter attack freezing, the device in the outdoor transmitter must adopt anti-freeze measures to prevent the pressure inside the mouth of the liquid due to ice volume expansion, leading to damage to the windows and doors sensor;
8, measuring the liquid pressure, the transmitter device location should prevent the impact of liquid (water hammer phenomenon), to avoid damage to the windows and doors sensor overpressure;
9, the wiring, the cable through the waterproof connector (attachment) or around the tube and tighten the sealing nut, to prevent rain and other water through the cable into the transmitter shell.
1, see the device hole scale: If the device hole scale is not appropriate, Door Window Sensor in the process of the device, the thread is very simple to be worn. This will not only affect the sealing performance of equipment, and Door Window Sensor can not fully play a role, and even may also be a security risk. As long as the appropriate device hole is able to prevent thread wear (thread industry specification 1 / 2-20 UNF 2B), the device hole can usually be used to check the device hole to make the appropriate adjustments.
2, adhere to the device hole cleaning: adhere to the device hole cleaning and prevent the melt block to ensure the normal operation of the equipment is very important. Before the extruder is cleaned, all Door Window Sensor should be removed from the barrel to prevent damage. When the Door Window Sensors are removed, the melt may flow into the device hole and harden, and if the remaining frites are not removed, the top and bottom may be damaged when the Door Window Sensors are re-installed. The cleaning kit can remove these melt residues. However, the repeated cleaning process may have deepened the damage to the Door Window Sensor formation. If this situation occurs, it should be adopted to increase the way the Door Window Sensors in the device hole in the direction.
3, select the appropriate position: When the Door Window Sensor device position is too close to the upstream of the production line, the melting material may wear the top of the Door Window Sensor; if the Door Window Sensor is placed in the rear position, in the Door Window Sensor and screw travel There may be a blocking area of molten material, where the melt may be degraded and the pressure signal may be transmitted distorted; if the Door Window Sensor is too deep into the barrel, the screw may touch the top of the Door Window Sensor during the rotation And the formation of its damage. In general, the Door Window Sensor can sit in front of the filter on the barrel, the melt pump before and after the mold.
4, careful cleaning; in the use of wire brush or special compounds on the extruder barrel before cleaning, should be all the Door Window Sensor are open down. As these two cleaning methods may be the formation of Door Window Sensor sensory film damage. When the barrel is heated, the Door Window Sensor should also be disassembled and scrubbed with a soft cloth that does not wear out, and the holes in the Door Window Sensor are also cleaned with a clean boring machine and guide sleeve.