Difference between an inner and front Membrane at Pressure Sensors

Inner membrane pressure sensors

In inner membrane pressure sensors, the measuring membrane is located inside the housing of the sensor. This membrane is in direct contact with the medium whose pressure is to be measured. This configuration has some specific characteristics:

• Direct contact: The inner membrane is in direct contact with the medium to be measured, resulting in accurate measurements.
• Robustness: Inner membrane sensors are often robust and suitable for demanding environments.
• Suitable for liquids and gases: They can be used for both liquids and gases, depending on the design.

Front membrane pressure sensors

In the case of forward membrane pressure sensors, the measuring membrane is located on the outside of the sensor, directly exposed to the medium. This configuration has its own set of characteristics:

• Bescherming tegen vervuiling: Het voorliggende membraan beschermt de sensor tegen verontreinigingen en vervuiling van het medium.
• Protection against contamination: The front membrane protects the sensor from contaminants and contamination of the medium.
• Thermal insulation option: By placing the membrane on the outside, thermal insulation can be added to protect the sensor from temperature fluctuations.

Here is a comparison table to clarify the specifications of both types of pressure sensors:

These are some of the main differences between inner and outer diaphragm pressure sensors. The choice between these two configurations depends on the specific requirements of your application and the type of medium you want to measure.

Applications of inner and front membrane pressure sensors

• Industrial Processes: Front membrane pressure sensors are often used in industrial processes for measuring pressure levels in liquids and gases. They are suitable for applications such as monitoring hydraulic systems and industrial machinery.
• Medical Equipment: These sensors are also used in medical equipment such as blood pressure monitors and respirators, where accurate pressure measurements are essential.
• HVAC systems: Front membrane pressure sensors are used in heating, ventilation and air conditioning systems to measure air pressure and fluid pressure for optimal control.

Front membrane pressure sensors:

• Chemical Industry: Front membrane pressure sensors are suitable for applications in the chemical industry, where aggressive chemicals are used. They provide protection against corrosion and contamination.
• Food industry: In the food industry, Front membrane pressure sensors are used to measure pressure levels in processes where food safety must be maintained.
• Environmental monitoring: These sensors are used for environmental monitoring, such as measuring pressure in water and wastewater treatment systems.
• Aerospace: Front membrane pressure sensors are used in aerospace applications for measuring pressure differences in aircraft and spacecraft.