Dwyer Instruments 2000-00 Pressure Gage

The Dwyer Instruments 2000-00 Magnehelic Gauge is the industry standard for measuring low differential pressure in HVACR and cleanroom environments. Featuring a high-precision 0-0.25" w.c. range, this analog gauge utilizes a frictionless Magnehelic movement with a silicone rubber diaphragm to provide rapid, accurate readings of positive, negative, or differential air pressure. The 4" diameter dial face is housed in a rugged, die-cast aluminum case that is IP67-rated and salt-spray tested for durability in demanding industrial settings. Designed for versatility, the 2000-00 supports both flange and flush mounting and includes dual 1/8" female NPT process connections on the side and back. This unit is specifically calibrated for vertical scale position, ensuring ±4% full-scale accuracy for filter monitoring, fan pressure indication, and blower vacuum applications without the need for external power or manometer fluids.

• High-Sensitivity Pressure Detection: Specifically engineered for ultra-low 0.25 inch water column measurements with 0.005 minor divisions for precise system balancing.
• Rugged Industrial Construction: The IP67-rated aluminum housing and breakage-resistant acrylic cover allow for reliable performance in high-vibration and salt-air environments.
• Maintenance-Free Operation: The frictionless magnetic linkage eliminates the need for recalibration due to mechanical wear or fluid evaporation.
• Versatile Installation: Dual NPT ports and included mounting hardware facilitate easy integration into HVAC ductwork, air handlers, or medical isolation rooms.
• Overpressure Protection: Integrated blow-out plugs safeguard the internal diaphragm against unexpected pressure spikes up to 25 psig.

Can the Dwyer 2000-00 be mounted horizontally?
Standard Magnehelic gauges are calibrated for a vertical position. For the 0-0.25" w.c. range, mounting in any other orientation will significantly affect accuracy and is not recommended unless a special horizontal calibration is ordered from the factory.

Is this gauge compatible with natural gas?
The standard 2000-00 is designed for air and non-combustible, non-corrosive gases. For combustible gas applications, a specific natural gas version with a Buna-N diaphragm must be used to ensure chemical compatibility.

What maintenance is required for the Magnehelic movement?
The unit requires no lubrication or routine internal service. Technicians should periodically cycle the zero adjustment screw located on the front cover to account for ambient pressure changes and ensure the pointer is accurately zeroed.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.