Diffused Silicon vs Single-Crystal Silicon Pressure Transmitters: What Are the Differences?

Pressure transmitters are widely used in water treatment, air compressors, hydraulic equipment, HVAC and various automatic control systems.

However, many users find different sensor types when selecting pressure transmitters. Diffused silicon and single-crystal silicon are two common types.

What are their differences? How to choose between them for different working conditions?

The core difference lies in the pressure-sensitive elements they adopt.

The diffused silicon pressure transmitter uses a diffused silicon pressure-sensitive element. With mature technology and a broad application range, it is commonly applied in general pressure measurement scenarios including water treatment, air compressors, HVAC, hydraulic equipment and industrial automation devices.

The single-crystal silicon pressure transmitter adopts a single-crystal silicon pressure-sensitive element. It delivers advantages in measurement accuracy, temperature compensation and long-term stability, and is more suitable for applications demanding high pressure measurement performance.

Both types can perform pressure measurement and transmit pressure signals to automation systems such as PLC and DCS. The distinctions mainly exist in sensor technology and performance priorities.

If your site only requires routine pressure monitoring with standard requirements for accuracy and stability, the diffused silicon pressure transmitter is a practical option.

Examples:

These scenarios require stable operation of pressure transmitters while meeting practical requirements such as measuring range, process connection and output signal.Therefore, diffused silicon pressure transmitters are the preferred choice for general pressure measurement and cost control.

When higher standards are required for pressure measurement accuracy and stability at the site, single-crystal silicon pressure transmitters are recommended.

For instance, in industrial process control, automation equipment and pump set pressure control, pressure signals need continuous transmission to systems like PLC and DCS, which raises the requirements for measurement performance.

Single-crystal silicon pressure transmitters are ideal for:

In practical use, selection shall be determined by specific working conditions and product parameters.

Norhen specializes in industrial process measurement and supplies multiple pressure measurement products including diffused silicon and single-crystal silicon pressure transmitters. Customized model selection is available based on pressure range, measured medium, operating temperature, installation method and output requirements.

From routine equipment pressure monitoring to industrial automatic process control, different working conditions correspond to different measurement requirements.

Share details including on-site pressure range, measured medium, operating temperature, installation method and output requirements. Norhen provides free one-on-one model selection, parameter verification and solution matching, helping you select pressure measurement products best suited for your actual working conditions.