Wall-mounted boiler water pressure sensorIn the choice of boiler water pressure sensor, should consider its accuracy, thread, pressure and a series of problems, what factors affect the accuracy of boiler water pressure sensor. Next, we focus on four inevitable errors, which are the initial errors of the sensor.

1, is the offset error: dueWall-mounted boiler water pressure sensorThe vertical offset remains constant over the entire pressure range, and changes in converter diffusion and laser adjustment correction will produce offset errors.

2, is the sensitivity error: the size of the error is proportional to the pressure. If the sensitivity of the device is higher than the typical value, the sensitivity error will be an increasing function of pressure. If the sensitivity is lower than the typical value, the sensitivity error will be a decreasing function of the pressure. The error is caused by a change in the diffusion process.

3, is the linear error: this is a pairWall-mounted boiler water pressure sensorThe initial error has almost no influence factor. The error is caused by the physical nonlinearity of the silicon chip, but for a sensor with an amplifier, it should also include the nonlinearity of the amplifier. The linear error curve may be a concave curve or a convex curve load cell.

4. Lag error: In most cases,Wall-mounted boiler water pressure sensorThe hysteresis error can be completely ignored because the silicon wafer has a high mechanical stiffness. In general, the hysteresis error only needs to be considered when the pressure changes are large.

With the rapid development of sensors and the improvement of people's pursuit of high-quality sensors, people in the industry continue to study product manufacturing processes to produce high-quality products, thereby occupying the sales market. What is the production process? What are the requirements for materials and circuits for each process?

As far as we know, there are mainly four types: ceramic type, thick film type, integrated type and thin film type. For more information, see the following:

1. Ceramic type:

This manufacturing process is an application of traditional materials. The ceramic material used is fine ceramics, also known as high-tech ceramics. This depends mainly on the standard ceramic process or the variant sol process. After completion of the appropriate preparatory operations, the formed part is sintered at high temperature.

2. Thick film type:

The thick film type corresponds to a thin film type, which is manufactured by forming a thin film on a substrate. The difference between the two is that the thick film type sensor is coated with a slurry of a sensitive material on a ceramic substrate, while the thick film type manufacturing material is mainly aluminum oxide, and heat treatment is performed after the coating is formed to form a thick film.

3. Integration:

This production process is essentially the same as the process for producing standard silicon-based semiconductor integrated circuits. After the sensor is manufactured in an integrated manner, a smaller volume and more functions can be integrated. Some integrated sensors may have some processing functionality to process the measurement signals.

4. Film type:

Thin film manufacturing involves advanced technologies such as nanotechnology. The manufacturing method is to form a thin film with a sensitive material on a dielectric substrate, I .e. Some of the circuitry can also be combined during the manufacturing process, which requires the use of hybrid techniques.

Jiangmen Hengmin Intelligent Control Instrument Co., Ltd. is a pressure transmitter manufacturer, mainly engaged in oil pressure sensors, wall-mounted boiler water pressure sensors, urea pump pressure sensors, hydrogen pressure sensors, pressure calibrators, automobile pressure sensors, water pump pressure sensors, water pressure Sensors, intelligent pressure controllers, high pressure sensors and other products. Our company found in the research industry production activities that with the increasing popularity of the Internet of Things and intelligent manufacturing concepts, the demand for pressure sensors in my country has grown rapidly in recent years. In response to the needs of the era of intelligent manufacturing, our company has developed high-precision testing instruments and special production system equipment for pressure sensor manufacturers to help sensor manufacturers greatly reduce the labor intensity of testing, reduce the number of workers, improve product quality, improve production efficiency and reduce production costs.