DESCRIPTION:
The Extech 407910 Heavy Duty Differential Pressure Manometer is a robust handheld instrument designed for precise measurement of differential pressure across a wide range of units. It supports continuous dual differential pressure inputs and displays results in eight selectable units including psi, mbar, mmHg, inHg, inHO, mHO, kg/cm², and atmospheres, making it versatile for HVAC, industrial processes, and environmental diagnostics. The manometer features zero offset adjustment, Min/Max recording, data hold, and auto power-off to conserve battery life. A built-in RS-232 PC interface enables connection to external devices for data export and analysis (with optional software). The kit includes quick-disconnect fittings, protective holster with stand, 9 V battery, and carrying case for field use. 

Key Features:

• Wide differential pressure range up to ±29 psi with high resolution and accuracy 

• Displays in eight selectable pressure units including psi, mbar, mmHg, inHg, inHO, mHO, kg/cm², and atm 

• Zero offset function for baseline correction 

• Min/Max record and recall for pressure fluctuation analysis 

• Data hold to freeze readings on display 

• Auto power-off to conserve battery life 

• RS-232 PC interface for data output (software optional) 

• Includes 2 quick-disconnect fittings, 9 V battery, protective rubber holster with stand, and carrying case