Ashcroft 351009SW02L400# Industrial Pressure Gauge 0-400 psi 3 1/2 in

Industrial Pressure Gauge 0-400 psi

The Ashcroft 351009SW02L400# is an industrial pressure gauge built for measuring 0 to 400 psi in process and test environments. Its 3 1/2 in nominal dial size and +/- 1.0 Percent accuracy suit technicians who need reliable readings on hydraulic or pneumatic systems. The 304 stainless steel case and polycarbonate lens resist corrosion in harsh conditions. A 1/4 in male NPT bottom connection fits standard ports without adapters.

Sustained measurement stability

The gauge maintains its stated accuracy during continuous service because the movement is housed in a sealed IP54 vented or IP65 closed configuration. No liquid fill is used, so there is no fill leak risk or temperature-induced volume change over long runs. The dry dampening feature is none, meaning the pointer responds directly to pressure without viscous lag. Vibration resistance is none, so mounting on actively vibrating equipment may affect pointer steadiness over extended periods.

Thermals noise and power draw

As a purely mechanical instrument the gauge draws no electrical power and produces no audible noise during operation. The 304 stainless steel case dissipates ambient heat without affecting calibration, while the polycarbonate lens remains stable across normal industrial temperature ranges. IP54 rating with the plug vented allows pressure equalisation, and IP65 with the plug closed seals the case against wash-down. NEMA 4 rating with the plug closed confirms suitability for indoor or outdoor installations.