Pressure gauges and temperature gauges are mechanical, direct-reading industrial instruments used to monitor process conditions without requiring external electrical power. Pressure gauges convert fluid force per unit area into pointer movement through a C-shaped or helical Bourdon tube, while temperature gauges use a precision bimetallic coil or gas-actuated expansion system to translate temperature changes into mechanical pointer rotation. Manufactured by Aavad Instrument, these gauges provide accurate, vibration-resistant process readings across pressure ranges from −1 to 1000 bar and temperature ranges from −50°C to +600°C.
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