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Dry spring electric contact pressure gauge is an advanced pressure measurement instrument designed for applications requiring reliable pressure monitoring and electrical signaling in environments where liquid-filled gauges may be unsuitable. Combining a spring mechanism with electrical contact technology, this device offers accurate pressure readings and automated control capabilities without the use of a liquid filling, making it ideal for industries where low maintenance, temperature stability, and cleanliness are priorities.
Key Features and Technology
Dry Spring Mechanism: Unlike traditional liquid-filled gauges, the dry spring design eliminates damping fluids （e.g., glycerin or silicone oil）. This reduces the risk of leakage, simplifies maintenance, and ensures consistent performance across varying temperatures. The spring tube, typically made of stainless steel or copper alloy, deforms elastically under pressure, directly driving the pointer and electrical contacts.
Electric Contact Functionality: The gauge incorporates adjustable upper and lower limit contacts. As the pointer moves with pressure changes, it actuates a magnetic or mechanical switch, closing or opening circuits at predefined thresholds. This enables automated responses such as alarms, pump activation/deactivation, or valve control.
High Precision and Durability: With a high-sensitivity spring tube and precise gear train, the gauge offers accurate readings （typically ±1.6% FS）. Its solid construction resists shock, vibration, and corrosion, ensuring longevity in industrial settings.
Customizable Options: Users can select dial sizes （e.g., 60mm, 100mm, 150mm）, connection types （threaded, flanged）, and pressure ranges （vacuum to 1000 bar）. Explosion-proof （Ex） and weatherproof models are available for hazardous or outdoor environments.
Applications
Industrial Automation: Controls hydraulic and pneumatic systems in manufacturing plants.
Oil and Gas: Monitors pipeline pressure without risk of fluid contamination or leakage.
HVAC Systems: Regulates boiler and compressor pressure via automated valves.
Food and Pharmaceuticals: Ensures sterile conditions by avoiding liquid fillings.
Power Generation: Protects turbines and boilers from overpressure via safety shutdowns.
Advantages Over Liquid-Filled Gauges
Temperature Stability: No fluid viscosity changes affect accuracy in extreme temperatures.
Cleanliness: Eliminates risk of fluid leakage in sensitive processes.
Low Maintenance: Requires no refilling or sealing checks.
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Dry spring electric contact pressure gauge is a versatile solution for industries demanding precise, automated pressure control with minimal downtime. Its robust design and adaptability make it a cornerstone of modern industrial safety and efficiency.
