The main feature of the Extech 407910 heavy duty differential pressure manometer is the dual differential inputs with internal sensors. Other features of the Extech 407910 heavy duty differential pressure manometer include a wide measurement range with high resolution, zero function, data hold and MAX / MIN. A built-in RS-232 PC interface allows for easy data download for further analysis on your PC. The Extech 407910 heavy duty differential pressure manometer comes complete with 2 quick-disconnect fittings, 9V battery, protective holster with stand and case. The Extech 407910 uses a 9V battery for power. If the meter does not switch on when the POWER button is pressed or if the display shows LBT, replace the battery (refer to the Battery Replacement section later in this manual). In order to conserve battery life, the meter has an automatic power off feature (after 10 minutes). To defeat this feature, access the RECORD mode by pressing the RECORD/RECALL button. In the RECORD mode, the meter will remain on until the user turns it off or until the battery weakens.
- Dual differential inputs with internal sensors
- Wide (±802 inches of water) measurement range with high resolution to 0.5 inch
- Displays 8 types of pressure units
- Zero function for offset measurements
- Data Hold, Auto power off, and Min/Max functions