Looking for a reliable and accurate pressure measurement solution for industrial systems?

The P120 Series Pressure Transmitter offers high accuracy, robust construction, and stable performance across a wide range of applications. It enables precise pressure monitoring, improves operational safety, and helps reduce long-term maintenance costs.

P120 Series Pressure Transmitter – High-Accuracy Pressure Measurement Solution for Industrial Systems

In modern industrial systems, pressure measurement and control play a critical role in ensuring operational safety, process stability, and equipment performance optimization.
The P120 Series pressure transmitter is designed for industrial applications requiring high accuracy, long-term stability, and reliable operation in harsh environments.

With piezoresistive silicon sensing technology combined with a media-isolated design, the device provides precise measurement for both liquids and gases across a wide range of industrial applications.

1. Overview of the P120 Series Pressure Transmitter

The P120 Series is a high-precision pressure transmitter designed for pressure measurement in industrial systems such as:

• Hydraulic systems
• Pneumatic systems
• Process control systems
• Automatic machinery

The transmitter features a water-resistant, corrosion-resistant stainless steel housing, ensuring reliable protection in demanding industrial environments.

The standard 4–20 mA output signal enables stable transmission for control and remote monitoring systems.

2. Key Advantages of the P120 Series

The P120 Series offers several operational benefits:

• High precision pressure measurement for industrial applications
• Wide measuring range from 0.1 to 350 kgf/cm²
• Advanced piezoresistive silicon sensing element
• Excellent long-term stability
• 300% overpressure protection
• Multiple electrical connection options

These features make the P120 Series a reliable pressure measurement solution for automation systems.

3. Operating Principle

Pressure from the process medium is transmitted through a corrosion-resistant 316L stainless steel diaphragm to the silicon sensing element via silicone oil as the pressure-transmitting medium.

Inside the sensor, diffused piezoresistive resistors are configured in a Wheatstone bridge circuit.

The measured signal is then:

• Temperature compensated
• Signal-conditioned
• Converted into a standardized current or voltage output signal

This process ensures measurement accuracy and long-term stability.

4. Applications

The P120 Series pressure transmitter is suitable for a wide range of industrial applications:

Hydraulic and Pneumatic Systems

• Standard hydraulic equipment
• Industrial pneumatic systems

Machinery and Automation

• Machine tools
• Automated production lines
• Flow control systems

Oil, Gas, and Chemical Industries

• Oil pressure monitoring systems
• Chemical and petrochemical equipment
• Offshore applications

Monitoring and Control Systems

• Engine monitoring and control
• Fire-fighting equipment
• Railway braking systems

5. Design and Durability

The transmitter is constructed with:

• Corrosion-resistant stainless steel housing
• 316L stainless steel diaphragm
• Media-isolated structure

This design provides:

• Increased durability
• Reduced environmental influence
• Long-term measurement stability

The device is suitable for both static and dynamic pressure measurement.

6. Models in the P120 Series

Typical models include:

• P125
• P126
• P127
• P128

These models offer various options for:

• Electrical connections
• Mechanical process connections
• Output signal configurations

This flexibility allows easy integration into existing systems.

Conclusion

The P120 Series pressure transmitter is a reliable pressure measurement solution for industrial applications requiring high accuracy, long-term stability, and resistance to harsh environments.

With advanced piezoresistive silicon sensing technology, durable stainless steel construction, and standardized industrial output signals, the P120 Series ensures safe, stable, and efficient system operation over the long term.