How to do the daily maintenance of pressure transmitter

How to do the daily maintenance of pressure transmitter? The staff of Anhui Hualite Automation (Group) Co., Ltd. will introduce us to the following:

1. Check the size of the mounting hole: If the size of the mounting hole is not appropriate, the threaded portion of the sensor is susceptible to wear during installation. This will not only affect the sealing performance of the equipment, but also make the pressure sensor unable to fully play its role, and may even cause potential safety hazards. Only suitable mounting holes can avoid thread wear (Thread Industry Standard 1/2-20 UNF 2B). Mounting holes can usually be used to test mounting holes to make appropriate adjustments.

2. Keep the mounting holes clean: Keeping the mounting holes clean and preventing clogging of the melt is important to ensure proper operation of the equipment. Before the extruder is cleaned, all pressure sensors should be removed from the barrel to avoid damage. When the sensor is removed, the molten material may flow into the mounting hole and harden. If these residual melts are not removed, the top of the sensor may be damaged when the sensor is installed again. The cleaning kit can remove these frit residues. However, the repeated cleaning process may deepen the damage caused by the mounting hole to the sensor. If this happens, steps should be taken to increase the position of the sensor in the mounting hole.

Pressure Transmitters

3, choose the right position: When the pressure sensor is installed too close to the production line, the unmelted material may wear out the top of the sensor; if the sensor is installed in the position too far between the sensor and the screw stroke may A stagnant zone of molten material can occur, where the molten material may degrade and the pressure signal may transmit distortion; if the sensor is too deep into the barrel, the screw may touch the top of the sensor during rotation and cause damage. In general, the sensor can be located on the barrel in front of the screen, in front of the melt pump, or in the mold.

4. Carefully clean; all sensors should be removed before cleaning the extruder barrel with a wire brush or special compound. Because both of these cleaning methods may cause damage to the sensor's diaphragm. When the barrel is heated, the sensor should also be disassembled and wiped on top using a soft cloth that will not wear, and the sensor hole needs to be cleaned with a clean drill and guide bush.

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