Thread Content
As a pressure sensor, a pressure transmitter can supply data to recorders, regulators, and other devices for measurement purposes. The pressure transmitter uses imported diffused silicon or ceramic cores as the pressure sensing elements; the sensor signals are converted by high-performance electronic amplifiers into standardized output signals of 0-10mA or 4-20mA. Pressure transmitters can replace traditional remote pressure gauges and Hall elements as well as differential transmitters, and they possess the performance characteristics of DDZ-Ⅱ and DDZ-Ⅲ type transmitters. However, even good pressure transmitters require regular cleaning. Cleaning of pressure transmitters: 1. It is very important to choose the right location: if the pressure sensor is installed too close to the upstream part of the production line, unmelted material can wear out the top of the sensor; if it is installed too far downstream, a zone of accumulated melted material may form between the sensor and the screw’s movement path, which can lead to degradation of the melt and distorted transmission of pressure signals; if the sensor is placed too deep inside the barrel, the screw may come into contact with the top of the sensor during rotation, causing damage to it. Generally, sensors can be located on the barrel in front of the filter screen, before and after the melt pump, or within the mold. 2. Be extremely careful when cleaning the pressure transmitter. Before cleaning the extruder barrel with a wire brush or special compounds, all sensors should be removed. Because both of these cleaning methods can potentially damage the diaphragm of the sensor. When the barrel is heated, the sensor should also be removed, and its top surface should be wiped with a soft cloth that does not cause wear; meanwhile, the holes in the sensor need to be cleaned using a clean drilling machine and guide sleeves. Pressure transmitters feature reliable operation, stable performance, easy installation and use, small size, light weight, and a high performance-to-price ratio, making them widely applicable in various applications involving the measurement of positive and negative pressures. The pressure transmitter uses imported diffused silicon or ceramic cores as the pressure sensing elements; the sensor signals are converted by high-performance electronic amplifiers into unified output signals of 0-10mA or 4-20mA. Pressure transmitters can replace traditional remote pressure gauges as well as Hall elements and differential transmitters, and they possess the performance characteristics of DDZ-Ⅱ and DDZ-Ⅲ type transmitters. Pressure transmitters can be used in conjunction with various types of moving-coil indicators, digital pressure gauges, and electronic potentiometers. They can also be used with various automatic control systems or computer systems.