Low Pressure Diaphragm, Dry
Low pressure diaphragm, dry gauges are used when accurate
pressure measurement is needed for very low-pressure ranges, typically under 15
psi, and when the medium may be corrosive, viscous, or clog-prone.
The diaphragm design replaces the standard bourdon tube and
is more sensitive to small pressure changes, making it ideal for low-pressure
air, gas, or liquid systems. It also creates a barrier between the process
media and the internal mechanism, helping to prevent contamination or
clogging—especially useful when measuring slurries, gases, or fluids that might
crystallize or corrode internal parts.
Because they are dry gauges, they are typically used in
applications with minimal vibration or pulsation, where liquid filling isn’t
needed. This makes them easy to read, lightweight, and lower in cost compared
to liquid-filled options.
These gauges are commonly used in applications such as HVAC
systems, air filtration, gas regulators, tank level monitoring, and
low-pressure process lines where sensitivity, media protection, and reliability
at low pressures are important.