Define

High temperature melt pressure sensor is an electronic device used to detect changes in melt pressure in high-temperature environments. They can accurately measure pressure in high-temperature environments, ensuring the stability and reliability of equipment operation. The main components of a high-temperature melt pressure sensor include the sensor chip, connecting cable, and housing. The sensor chip is the core for measuring pressure, usually composed of sensitive thin films, electrodes, and insulating materials. Connecting cables can connect sensors and measuring devices, helping to transmit pressure signals, while the housing can protect the sensor chip from external environmental influences.

High temperature melt pressure sensors, as an important high-temperature detection device, have been widely used in monitoring systems in various high-temperature environments. It has the characteristics of high precision, fast response speed, and strong anti-interference ability, which can effectively improve the operational efficiency and stable reliability of the equipment.

Principle

The pressure of the medium directly acts on the diaphragm of the sensor, causing the diaphragm to produce a micro displacement proportional to the pressure of the medium, resulting in a change in the resistance of the sensor. This change is detected by electronic circuits and converted into a standard signal corresponding to this pressure.

Wheatstone Bridge

A device consisting of four resistors used to measure the resistance value of one resistor (the resistance values of the other three resistors are known). Four resistors form a square.

Connect one power supply to two opposing connectors, and connect one ammeter to the other two opposing connectors. When the ammeter shows no current passing through, the bridge is in a balanced state, that is, R1 · R2=R3 · R4

Application field

Chemical fiber spinning

Main applications: In the process of chemical fiber spinning, the high temperature melt pressure sensor is used to measure and control the pressure of polymer melt at high temperature to ensure the quality of fiber molding.

Specific role: Through precise control of pressure, improve the uniformity and quality of the fiber, reduce the scrap rate in the production process.

Rubber and plastic machinery

Main Applications: In plastics and rubber production equipment, sensors are used to monitor and adjust melt pressure in extruders to ensure dimensional accuracy and surface smoothness of the final product.

Specific role: By optimizing extrusion pressure, improve product quality, extend equipment life and reduce production costs.

Non-woven fabric nonwoven

Main application: In the non-woven production line, it is necessary to monitor and adjust the melt pressure in the high-speed spinneret process in real time to ensure the uniformity of the fiber network.

Specific role: Through stable pressure control, improve production efficiency and product quality.

Polyester rubber synthesis

Main application: In the process of polyester rubber synthesis, the sensor is used to monitor the pressure change of high temperature melt in the reactor to ensure the smooth progress of chemical reaction.

Specific role: Through real-time monitoring, prevent production accidents caused by too much or too little pressure to ensure production safety.

Medical polymer material

Main applications: In the production of medical polymer materials such as catheters, infusion bottles, etc., it is necessary to precisely control the melt pressure to ensure that the product is non-toxic and sterile and accurate size.

Specific role: Through high-precision pressure sensing technology, to ensure the safety and effectiveness of medical devices.

In the traditional high-temperature melt pressure sensor and pressure measuring probe, the zero point of the sensor will be affected by high temperature during the process from room temperature to high temperature, resulting in a large zero drift. When the pressure is measured at high temperature, this zero drift will be superimposed on the measured value, resulting in a large measurement deviation. In order to solve this problem, GRAEFF launched AIM series products. AIM series products adopt temperature compensation technology to compensate the zero drift of the product at 350℃. When the pressure measuring probe is subjected to high temperature, it can achieve close to zero temperature drift, making the measurement of AIM series sensors more accurate and stable.

High-precision monitoring

New zero temperature drift patent

No fear of temperature changes

Innovative transformation

10 million pressure cycle tests

Smart prediction

How to choose the right sensor

What kind of pressure is measured.

The measured medium.

What precision needs to be achieved.

Temperatureresistance,interchangeability, time stability and robustness of this high temperature pressure sensor.

What output this high temperature pressure sensor uses, the excitation voltage required, and how to connect the sensor to its own electrical system.

For more information, please call:

400-616-0338