SI-703 Diaphragm Pressure Sensor

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Diaphragm pressure sensor is also called Diaphragm pressure transmitter, or Flat membrane pressure transmitter.
SI-703 Diaphragm Pressure Sensor Strain-type flat membrane type measuring end adopts special treatment and strong flush diaphragm. Hard particles in the measured medium will not damage the isolated flush diaphragm. Diaphragm Pressure Sensor is suitable for pressure measurement of highly viscous or particulate fluids. The problem of media blockage in the pressure introduction hole is solved.

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Pressure Sensors

Features of Diaphragm Pressure Sensor

  • No pressure hole, no cavity planar structure;
  • With heat exchange fin design, high temperature resistance. Applicable medium temperature can reach 300°C;
  • Provide low pressure, medium pressure, high pressure rich pressure range;
  • The pressure port adopts 316L flat diaphragm structure. Hygienic and anti-scaling type;
  • Flat membrane design is suitable for various viscous media;
  • Various signal output forms, voltage, current, frequency signals, etc.;
  • Various pressure ports are available;
  • Sub-strain type and diffused silicon front type;
  • Can measure absolute pressure, gauge pressure and sealed reference pressure;
  • Good sealing, can work stably for a long time;

SI-703 Diaphragm Pressure Sensor Specifications

Range: 0-0.6，1,5，10，20，30，40，50～200MPa
Comprehensive accuracy: 0.2%FS, 0.5%FS, 1.0%FS
Output signal: 4-20mA (two-wire system), 0-5/1-5/0-10VDC (three-wire system)
Communication method: RS485/232
Supply voltage: 24VDC (10-30VDC)
Medium temperature: -20～85℃，Support high temperature customization
Ambient temperature: -20～85℃
Load resistance: current output type: maximum 800Ω; voltage output type: greater than 50KΩ
Insulation resistance: greater than  2000MΩ (100VDC)
Sealing grade: IP65
Long-term stability: 0.1%FS/year
Vibration effect: within the mechanical vibration frequency 20Hz ~ 1000Hz, the output change is less than 0.1%FS
Electrical interface: direct outlet or aviation connector outlet
Mechanical connection: G1/2, M20 × 1.5, etc. Other threads can be designed according to customer requirements
Overload pressure: 200% FS
Burst pressure: 300% FS

Order Guide

SI-703  Diaphragm Pressure Sensor
Code Pressure Range
(0~X)KPa 0-0.6，1,5，10，20，30，40，50～200MPa
Code Output Signal
B1 4-20mA
B3 0-10v
B4 0-5V
B5 1-5V
Code Process Connection
P1 M20*1.5
P3 G1/2
P0 Customize
Code Electrical connections
C1 Hirschman joint
C2 Cable output
C3 Aviation connector
Code Structure Material
Diaphragm Interface Shell
M1 316L Stainless steel Stainless steel
M3 Tantalum customize customize
M4 Hastelloy C customize customize
Code Additional functions
G Gauge pressure (default)
A Absolute pressure
S Sealed gauge pressure
D1 Local display
Y2 Blue protective shell
T High temperature -XX℃
SI-703  (0-40)MPa P1 C1 M1 G  

Learn More About Diaphragm Pressure Sensor

Diaphragm pressure transducers are multifunctional devices that are commonly used to measure pressure in viscous media. Examples include chemical coatings, paints, food, polyurethane, and crude oil. These sensors typically consist of a flexible diaphragm. The diaphragm deforms in response to applied pressure. This is then converted into an electrical signal by a transducer.

Some specific applications for diaphragm pressure sensors include:

Paint detection system:

Diaphragm pressure sensors are used to measure the thickness of coatings applied to surfaces in the automotive, aerospace and other industries.

Food processing:

These sensors can be used to measure the pressure of viscous food during processing and packaging.

Polyurethane equipment:

Diaphragm pressure sensors are commonly used to monitor the pressure of polyurethane materials during manufacturing and processing.

Crude:

These sensors can be used to measure the pressure of crude oil during transportation and storage.

It is suitable for on-site total measurement and control with weak medium pressure. Such as paint detection of beverages and canned goods.

Diaphragm pressure sensor, including strain type and diffused silicon front type.
When the pressure is high, we choose the contingency style more.

A diaphragm pressure sensor works by measuring the strain on a flexible diaphragm caused by a pressure difference between one side of the diaphragm and the other. The pressure difference can be caused by a variety of factors. Such as the weight of a fluid or gas, the force of an impact, or the force of an applied load.

The strain on the diaphragm is typically measured using a strain gauge. Which is a small electrical resistor that changes resistance in response to a change in strain. The strain gauge is usually mounted on the surface of the diaphragm and is connected to an electrical circuit that measures the change in resistance.

The pressure difference is then calculated based on the measured strain and the known characteristics of the diaphragm. Such as its material, thickness, and size. The resulting pressure reading is typically displayed on a gauge or transmitted to a computer or other electronic device for further analysis.

The strain principle is a general concept that refers to the way in which a material deforms in response to an applied load or force. When a load is applied to a material, it can cause the material to stretch or compress, which is known as strain. The strain is usually expressed as a ratio of the change in length of the material to its original length.

The strain can be used to calculate the stress in the material, which is the force per unit area acting on the material. The relationship between strain and stress is known as Hooke’s law. And it is a fundamental principle in the field of mechanics.

Advantages of a diaphragm pressure sensor:

Highly accurate: Diaphragm pressure sensors are known for their high accuracy, making them ideal for applications where precise measurements are required.

Fast response time: Diaphragm pressure sensors are able to respond quickly to changes in pressure, allowing for real-time monitoring and control.

Durable: The diaphragm in a pressure sensor is typically made of a strong, flexible material. Such as stainless steel or other high-quality metal alloys, making them resistant to wear and tear and able to withstand harsh environments.

Versatile: Diaphragm pressure sensors can be used in a wide range of applications, including industrial, automotive, aerospace, and medical.

Disadvantages of a diaphragm pressure sensor:

Limited measurement range: Diaphragm pressure sensors are typically only able to measure pressure within a specific range, making them less suitable for applications where very high or very low pressures need to be measured.

Sensitive to temperature: The accuracy of a diaphragm pressure sensor can be affected by changes in temperature, so they may require additional temperature compensation in certain applications.

Prone to failure: Like any mechanical device, diaphragm pressure sensors are prone to failure over time due to wear and tear or other factors.

Expensive: Diaphragm pressure sensors tend to be more expensive than other types of pressure sensors, making them less suitable for applications where cost is a major concern.

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More Featured Pressure Sensors

Sino-Inst is a manufacturer of Diaphragm pressure sensors. We supply more than 20 types of Diaphragm Pressure Sensors.

SI-703 Diaphragm Pressure Sensor is mainly used to measure viscous media. Such as chemical coatings, paint detection system. Environmental protection, coal mining, paper making, food processing. Polyurethane equipment, crude oil and other viscous media.

Compact structure, anti-corrosion, anti-vibration, anti-particle impact, wide range temperature compensation.

Diaphragm pressure sensor, including strain type and diffused silicon front type.

The strain-type flat-membrane measuring end adopts a specially-treated solid flush diaphragm, and the hard particles in the measured medium will not damage the isolation flush diaphragm. Compact structure, anti-corrosion, anti-vibration, anti-particle impact, wide range temperature compensation. It is especially suitable for measuring the fluid pressure of highly viscous matter or particles, and solves the problem of media blockage in the pressure introduction hole.

The diffused silicon front-end type is made of imported diffused silicon core, and uses adjustment and digital compensation technology. The product performance is reliable and the output is stable.

Sino-Inst has provided Different Types of Pressure measurement solutions to customers for many years. Our Different Types of Pressure Transmitters, made in China. Widely exported to the United States, Britain, Germany, South Africa, Norway and other countries.

If you need Diaphragm pressure sensors, but have technical questions, please feel free to contact our sales engineers.

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    SI-703 Diaphragm Pressure Sensor | Sino-Inst

    Diaphragm pressure sensor is also called Diaphragm pressure transmitter, or Flat membrane pressure transmitter.SI-703 Diaphragm Pressure Sensor Strain-type flat membrane type measuring end adopts special treatment and strong flush diaphragm. Hard particles in the measured medium will not damage the isolated flush diaphragm. Diaphragm Pressure Sensor is suitable for pressure measurement of highly viscous or particulate fluids. The problem of media blockage in the pressure introduction hole is solved.

    Product SKU: SI-703 Diaphragm Pressure Sensor

    Product Brand: Sino-Inst

    Product Currency: USD

    Product Price: 260

    Price Valid Until: 2029-09-09

    Product In-Stock: InStock

    Editor's Rating:
    5