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Company Cases about Flush Diaphragm Pressure Sensor vs. Standard Pressure Sensor Comparison Table

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Flush Diaphragm Pressure Sensor vs. Standard Pressure Sensor Comparison Table

2026-01-13

Comparison Dimension Flush Diaphragm Pressure Sensor Standard Pressure Sensor
Diaphragm Design Sensing diaphragm is flush-mounted and directly exposed to the measured medium; no cavity or port between diaphragm and medium Diaphragm is isolated from the medium by a fill fluid or protective barrier; has a small pressure port/cavity
Core Working Principle Pressure deforms the exposed diaphragm → deformation is detected by the internal sensing element (strain gauge, capacitive cell, etc.) → converted into electrical signal Pressure is transmitted through the fill fluid to the diaphragm → diaphragm deformation is detected and converted into electrical signal
Medium Adaptability Suitable for viscous, corrosive, solid-containing media (sludge, slurry, syrup, acids, etc.) Suitable for clean, non-viscous, non-corrosive media (clean water, dry gas, etc.)
Clogging Risk Low; no small ports to trap particles or viscous substances High; small pressure ports are easy to clog with solids or viscous fluids
Hygiene Performance Excellent; flush surface is easy to clean and sterilize (meets CIP/SIP requirements); ideal for food, pharmaceutical industries Poor; the fill fluid cavity and pressure port are prone to residue accumulation; cannot meet strict sanitary standards
Response Time Fast; direct contact between medium and diaphragm eliminates the transmission delay of fill fluid Slow; pressure needs to be transmitted through the fill fluid to the sensing diaphragm
Chemical Compatibility High; diaphragm can be made of corrosion-resistant materials (Hastelloy, PTFE, stainless steel) Relatively low; the fill fluid may react with aggressive media, and the pressure port is easy to corrode
Typical Applications Food & beverage processing, pharmaceutical manufacturing, chemical engineering, wastewater treatment, pulp & paper production General industrial pressure measurement, clean fluid/gas pressure monitoring, HVAC systems
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