Dwyer Instruments 2304 Magnehelic Differential Pressure Gauge 2-0-2" WC Zero Center

The Dwyer Instruments 2304 Magnehelic Differential Pressure Gauge is a reliable, precision instrument designed for measuring low differential pressures in HVAC, clean room, and industrial applications. This zero-center gauge features a dual-range scale of 2-0-2 inches water column (w.c.), making it ideal for measuring both positive and negative pressures from a single reference point.

Key Features:

• Zero-center range: 2-0-2 inches water column for bidirectional pressure measurement
• Magnehelic dial design with highly visible 4-inch dial face for easy reading
• Frictionless magnet and helix design ensures accurate, repeatable measurements
• Rugged die-cast aluminum case built for long-term durability
• Dual high and low pressure ports with 1/8" NPT female connections
• Accuracy of ±2% full scale for reliable performance
• No mercury or other liquid fill required - completely dry operation
• Panel or surface mounting options available

The Magnehelic gauge utilizes a proven design that has been the industry standard for over 60 years. Perfect for filter monitoring, pressure drop measurement, damper control verification, and general HVAC system diagnostics. The zero-center scale allows technicians to quickly identify whether the system is operating under positive or negative pressure relative to the reference point.