Absolute / Gauge Pressure Transmitter

• Absolute / Gauge pressure transmitters measure the pressure signal between a port and the process pipeline by using atmospheric pressure or vacuum as a reference. When silicon single-crystal material is subjected to external force, the electronic energy level state within the material changes, causing a significant variation in resistivity-this is known as the piezoresistive effect. Utilizing this effect, strain resistors are fabricated on a single-crystal silicon wafer through integrated processes, forming a diffused silicon sensor by constructing a Wheatstone bridge. When pressure acts directly or indirectly on the surface of the measuring silicon wafer, it induces minute deformation of the diaphragm. A high-precision measurement circuit converts this minute deformation into a voltage signal proportional to the applied pressure. After undergoing temperature and pressure compensation, a dedicated chip converts this voltage signal into an industry-standard output signal. Since the diaphragm detection circuit employs integrated circuitry containing built-in linearity and temperature compensation circuits, this transmitter achieves high accuracy and stability, making it highly suitable for use in various complex industrial environments.

• The absolute and gauge pressure transmitter features stainless steel wetted parts, ensuring compatibility with a wide range of gases and liquids. Its robust construction enables reliable performance in harsh environments and demanding media conditions. With a compact housing diameter of just 19mm, the transmitter simplifies installation and saves space, making it ideal for industrial automation, process control, energy management, and environmental monitoring.

• Full temperature and pressure compensation allows the absolute and gauge pressure transmitter maintains exceptional accuracy and stability across a broad temperature range of -40°C to 125°C. 

Application

 

 

Industrial Process & Control

This absolute and gauge pressure transmitter is widely used in the chemical, pharmaceutical, and food processing industries for precise pressure monitoring and control in pipelines, reactors, and vessels. It supports both absolute and gauge pressure measurement to meet a variety of process requirements.

 

 

Energy Management

The sensor ideal for natural gas pressure monitoring, compressor control, and HVAC systems, ensuring efficient and safe operation while optimizing energy consumption.

 

 

Environmental Monitoring & Meteorological Equipment

Integrated into weather stations, barometric pressure sensors, and altimeters to provide accurate atmospheric pressure data for environmental research and forecasting.

 

 

Automotive & Test Measurement

Applied in engine testing, brake systems, and fuel pressure detection to enhance vehicle performance, safety, and compliance with industry standards.

 

 

Medical & Laboratory Equipment

Used in ventilators, sterilizers, and laboratory pressure instruments to deliver reliable and precise pressure control for critical healthcare and research applications.

1. Power Supply Requirements

Ensure the power supply voltage remains within the 12V to 45V DC range. Exceeding this range may cause permanent damage to the transmitter.

2. Installation Precautions

Avoid applying mechanical stress or overtightening during installation, as this can deform the housing and compromise measurement accuracy.

3. Pressure Mode Selection

Select the appropriate pressure mode (absolute or gauge) based on your application requirements. Note that gauge pressure measurements require atmospheric pressure as a reference.

4. Media Compatibility

When used in corrosive media, please confirm the compatibility of stainless steel materials.

5. Storage and Handling

Store and transport the transmitter in a dry, static-free environment. Avoid prolonged exposure to high temperatures or humidity to prevent performance degradation.

6. Calibration Maintenance

For critical applications, periodic recalibration is recommended to maintain accuracy over time, especially in high-temperature or high-vibration environments.