Dwyer Instruments 2300-00

The Dwyer 2300-00 Magnehelic Gauge is a precision-engineered differential pressure gauge designed for monitoring low-pressure air or non-combustible gases in critical HVAC and industrial environments. Featuring a zero-center range of .125-0-.125" w.c., this instrument is ideal for applications requiring the detection of both positive and negative pressure fluctuations, such as cleanroom pressure monitoring and hospital isolation room verification. The unit utilizes Dwyer’s friction-free Magnehelic movement, ensuring high sensitivity and an accuracy rating of ±2% of full scale. Built for durability, the 4" dial face is encased in a rugged die-cast aluminum housing, allowing for both flange or flush mounting in standard panel cutouts. The 1/8" female NPT process connections (side and back) provide versatile piping options for contractors. When calibrating building automation systems or verifying filter pressure drop, this mechanical gauge offers a reliable, power-free solution for real-time diagnostics and environmental control compliance in complex air handling systems.

Key Benefits for Contractors

• Precise Zero-Center Monitoring: Specifically engineered for applications where pressure differentials swing between positive and negative states.
• Frictionless Movement: Employs a magnetic linkage that eliminates mechanical wear, ensuring long-term repeatability in HVAC pressure sensors.
• Durable Construction: The IP67-rated housing protects internal components from dust and moisture in demanding mechanical rooms.
• Simple Installation: Dual 1/8" NPT taps allow for flexible integration into existing differential pressure transmitter loops.
• Industry Standard: The 4-inch footprint fits standard panel openings, making it the go-to choice for cleanroom differential pressure kits.

Common Questions

Can the Dwyer 2300-00 be used for combustible gas applications?
No, this gauge is rated exclusively for air and non-combustible, compatible gases. Using it with hazardous gases could compromise the diaphragm integrity.

What is the maximum pressure limit for the 2300 series?
The standard Magnehelic gauge is rated for a maximum pressure of 15 psig (100 kPa), though higher-pressure options are available for specialized industrial installs.

Does this gauge require external power for operation?
No, the Magnehelic is a purely mechanical instrument that operates on pressure differentials, making it a reliable backup for electronic pressure monitoring systems.

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.