Ceramic Pressure Transmitter

Introduction

The anti-corrosion Ceramic Pressure Transmitter has no liquid transmission, and the pressure directly acts on the front surface of the ceramic membrane, causing the membrane to produce small deformation. The thick film resistance is printed on the back of the ceramic membrane and connected to a Wheatstone bridge (closed bridge). Due to the piezoresistive effect of the varistor, the bridge generates a voltage signal that is highly linear and proportional to the pressure and also proportional to the excitation voltage, The standard signal is calibrated as 2.0 / 3.0 / 3.3 MV / V according to the different pressure ranges, which can be compatible with the strain sensor.

Basic structure

Ceramic Pressure Transmitter is mainly composed of ceramic ring, ceramic diaphragm and ceramic cover plate. The ceramic diaphragm is a stress-sensitive elastic body, which is made of 95% Al2O3 ceramic. It is required to be flat, uniform and dense. Its thickness and effective radius depend on the design range. The porcelain ring is fired and formed at high temperature by hot die casting process.

High temperature glass slurry is used between the ceramic membrane and the ceramic ring, which are fired together through thick film printing and thermal firing technology to form a stress cup-shaped elastic body with peripheral fixed support, that is, a rigid structure without creep shall be formed at the peripheral fixed support part of the ceramic.

On the top surface of the ceramic membrane, that is, the bottom of the ceramic cup, the sensor circuit is made by thick film technology. The circular groove at the lower part of the ceramic cover plate forms a certain gap between the cover plate and the diaphragm. By limiting, the diaphragm can be prevented from breaking due to excessive bending during overload, forming an anti overload protection for the sensor.

Basic characteristics

Ceramic is a recognized material with high elasticity, corrosion resistance, abrasion resistance, impact resistance and vibration resistance. The thermal stability of ceramic and its thick film resistance can make its working temperature range as high as - 40 ~ 135 ℃, and it has high accuracy and stability. Electrical insulation degree > 2KV, strong output signal and good long-term stability.

Ceramic Pressure Transmitter with high characteristics and low price will be the development direction of pressure sensors. There is a trend to replace other types of sensors in Europe and America. In China, more and more users use ceramic sensors instead of diffused silicon pressure sensors.

Packaging

Testing Equipment

Our Service

Service standards: We are committed to provide a high quality and responsive service to all clients.

OEM: Available for wave guide series.

Stable quality: implement the whole process of quality control, meticulous and strict inspection!

Reasonable price: Internal cost control, reducing expenses, benefiting customers!

Professional selection: more than 5 years of professional engineer selection, to provide you with alternative models of each factory, system solutions

Fast delivery: adequate stocking, shortened delivery time!

Door to door service: We usually send the parcel by DHL, EMS and TNT etc. The tracking number will be sent to you after delivery. It usually takes 3~5working days to reach from our side to your side, which is very convenient for your business.

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