SI-3151 Capacitive Pressure Transmitter

The SI-3151 series capacitive pressure transmitter is a high-performance intelligent pressure transmitter. It can measure both absolute and gauge pressure. Supports 4-20mA, HART, RS485 and other signal outputs.

The built-in linear and temperature compensation circuits enable the transmitter to achieve high accuracy of 0.5% FS and high stability. It also offers exceptional overload resistance.

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Advantages of SI-3151 Capacitive Pressure Transmitter

Capacitive pressure sensors measure pressure using changes in the capacitance of a capacitor. They offer high accuracy, high sensitivity, low power consumption, excellent linearity, and a wide measurement range.

• High Accuracy: Capacitive sensors provide very precise pressure measurements. An accuracy of 0.5% FS meets most pressure measurement needs.
• High Sensitivity: They are extremely sensitive to pressure changes and can detect even small changes.
• Low Power: Capacitive sensors typically require very little power to operate.
• Excellent Linearity: The output signal shows a very good linear relationship with pressure changes.
• Wide Range: They can accurately measure pressure from 25 Pa to 70 MPa with extremely high stability.
• Strong Environmental Adaptability: They can operate stably in a wide range of environmental conditions, including high and low temperatures, humidity, and corrosive environments.
• High Output Signal: The pressure transmitter’s circuitry converts small changes in capacitance directly into a high output signal without the need for signal amplification.

SI-3151 Capacitive Pressure Transmitter Specifications

absolute pressure transmitter working principle

Pressure (gauge pressure)/absolute pressure transmitter is a pressure signal measured with atmospheric pressure/vacuum as the reference terminal, and only one port is connected to the process pipeline.

The working principle of metal capacitive pressure (gauge pressure)/absolute pressure transmitter is:
When the pressure acts indirectly on the surface of the metal measuring diaphragm (elastic measuring element) of different thickness through the isolation diaphragm and the pressure guide medium. Make the diaphragm slightly deformed. The maximum deformation does not exceed 0.1mm. A high-precision measurement circuit converts this tiny deformation into a voltage signal that is linear with the differential pressure signal. After linearization, temperature compensation. Then use a dedicated chip to convert this voltage signal into an industry standard 4-20mA current signal or 1-5V voltage signal.

The working principle of capacitive pressure transmitter and capacitive absolute pressure transmitter is the same as that of differential pressure transmitter, the difference is that the pressure of low pressure chamber is atmospheric pressure or vacuum.

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More Featured Industrial Pressure Transmitters and Sensors

Sino-Inst is a manufacturer of Capacitive-Absolute Pressure Transmitters. SI-3151 Capacitive-Absolute Pressure Transmitters adopts high-performance pressure-sensing chips. With advanced circuit processing and temperature compensation technology, it converts pressure changes into linear current or voltage signals .

SI-3151 Capacitive-Absolute Pressure Transmitters have HART communication, communication and self-diagnosis functions. Users use handheld terminals or fieldbus systems to transmit, read, display and input all working information and additional information of transmitters from a long distance.

There are many types of pressure sensors, such as resistance strain gauge pressure sensors, semiconductor strain gauge pressure sensors, Silicon piezoresistive pressure sensors, inductive pressure sensors, capacitive pressure sensors, resonant pressure sensors and capacitive sensors.

A capacitive sensor is a device that converts the measured change into a change in capacitance, which itself is a variable capacitor. Because this sensor has the characteristics of simple structure, small size, good dynamic response, high sensitivity, high resolution, and non-contact measurement, it is widely used in displacement, acceleration, vibration, pressure, pressure difference, liquid level, etc. Sub-content and other detection fields.

If you need to purchase Capacitive-Absolute Pressure Transmitters, or have any technical questions about Absolute Pressure Transmitters, please feel free to contact our engineers.

Popular Capacitive Pressure Transmitter GP-AP Best Price!

The SI-3151 series capacitive pressure transmitter is a high-performance intelligent pressure transmitter. It can measure both absolute and gauge pressure. Supports 4-20mA, HART, RS485 and other signal outputs.

Product SKU: SI-3151 Capacitive-Absolute Pressure Transmitter

Product Brand: Sino-Inst

Product Currency: USD

Product Price: 265

Price Valid Until: 2039-09-09

Product In-Stock: InStock

Editor's Rating:
5