Huaheng transmitter manufacturers have developed two core technologies, sensor and intelligent circuit board. Not only do they master all the core component technologies of all products, but also the accuracy of industrial automatic transmitter manufacturers is constantly improving, from level 0.2 to level 0.1. Through the extension of the core technology, other products for measuring flow and temperature can be deformed.
At present, Huaheng liquid level transmitter manufacturer has three major technical strength, one is the fully isolated intelligent circuit processing unit technology, the other is the manufacturing technology of metal capacitance sensor, and the third is the multi parameter technology of the whole series of throttling devices.
Differential pressure transmitter is a transmitter to measure the pressure difference between the two ends of the transmitter, which outputs standard signals (such as 4-20mA, 0-5V) to measure the liquid level, density and pressure of liquid, gas and steam. Today we mainly introduce the six operation steps of differential pressure transmitter, hoping to help users better apply the product.
Operation steps for installation of 3151 flange type multiparameter liquid level transmitter 1. Select proper position: when the installation position of differential pressure transmitter is too close to the upstream of the production line, the unmelted material will wear to the top of the sensor. If the sensor is installed too far back, there will be a stagnation zone between the sensor and the screw stroke, where the molten material is likely to degrade, and the pressure signal may also transmit distortion. In general, the sensor can be located on the barrel in front of the filter screen, before and after the melt pump, or in the mold
Operation steps for installation of 3151 flange type multi parameter liquid level transmitter 2. Check the size of mounting hole: if the size of mounting hole is not appropriate, the thread part of differential pressure transmitter is easy to be worn during installation. This will not only directly affect the sealing of the equipment, but also make the pressure sensor unable to fully play its role, and may even produce security risks. Only a suitable mounting hole can avoid thread wear. Usually, we can use a mounting hole measuring instrument to carry out fine detection of the mounting hole to make appropriate adjustments.
Installation and operation steps of 3151 flange multi parameter liquid level transmitter 3. Avoid low temperature interference: in the process of extrusion production, if the extruder has not reached the operating temperature before production, the sensor and extruder will be damaged to a certain extent. In addition, if the sensor is removed from the cold extruder, the material may adhere to the top of the sensor and cause damage to the vibration film. Therefore, before removing the differential pressure transmitter, it should be confirmed that the temperature of the barrel is high enough and the materials inside the barrel are in the softened state.
The installation and operation steps of 3151 flange type multiparameter liquid level transmitter 4. Keep dry: Although the circuit design of differential pressure transmitter can withstand harsh extrusion processing environment, most of the sensors can not be absolutely waterproof, which is not conducive to normal operation in wet environment. Therefore, it is necessary to ensure that the water in the water-cooling device of the extruder barrel will not leak, otherwise it will cause adverse effects on the sensor. If the sensor has to be exposed to water or humid environment, it is necessary to select a special sensor with strong water resistance.
The installation procedure of 3151 flange type multiparameter liquid level transmitter 5. Keep the installation hole clean: keep the installation hole clean is mainly to prevent the melting material from blocking, which is very important to ensure the normal 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 the residual molten material is not removed, the top of the sensor may be damaged when the sensor is installed again. The cleaner's kit is able to remove these slag residues. However, repeated cleaning may deepen the damage to the sensor caused by the mounting hole. If this happens, measures should be taken to raise the position of the sensor in the mounting hole.
Operation steps for installation of 3151 flange type multi parameter liquid level transmitter 6. Careful and comprehensive cleaning: all differential pressure transmitters shall be removed before cleaning the barrel of extruder with wire brush or special compound. Because both cleaning methods may damage the vibration film of the sensor. When the cylinder is heated, the sensor should also be disassembled and the top of the sensor should be wiped with a soft cloth that will not produce wear. At the same time, the holes of the sensor should also be cleaned with a clean drilling machine and guide sleeve.
Installation procedure of 3151 flange type multiparameter liquid level transmitter In the future, the pressure transmitter industry will become more and more sophisticated. Some brand enterprises will continue to improve the competitiveness of products, improve the service of supporting measures, accelerate the development of value-added products of transmitters, enrich the product series, and no longer only make a single product, increase the function extension of skill type, facilitate the daily use of customers, and drive the quality of technical standards of the whole industry With the rapid development of science and technology, the pressure transmitter has entered the development direction of science and technology.