Extech SDL720 Differential Pressure Manometer/Datalogger

The SDL720 is designed for professionals who need accurate differential pressure measurement combined with data-logging capability. It features two built-in piezoelectric sensors allowing it to measure the pressure difference between two points (P1 vs P2) simultaneously, which is particularly useful for ductwork, filters, ventilation systems, airflow setups and general industrial-use scenarios. The unit supports ten selectable units of measure (psi, inH₂O, mmHg, bar, kPa, mbar, atm, etc.), a zero-offset correction for quick calibration on site, and a large back-lit LCD display for clear viewing in field conditions. For data capture, you can manually store up to 99 readings, or engage continuous logging via a standard SD memory card (supplied) with date/time stamps and exportable to spreadsheet format for post-analysis. The sampling interval for automatic logging can be user-set from one second up to nearly nine hours, making it flexible for both short-term events and long-term monitoring tasks. Additional features include Max/Min recall, Data-Hold freeze, auto-power-off (which can be disabled for long sessions), and rugged construction suitable for field use. Supplied accessories typically include six AA batteries, a universal AC adapter, SD card, hose couplers and hard carrying case—making it ready out of the box for mid-range differential pressure measurement and logging.

Features

• Differential pressure measurement up to ±29 psi (≈2000 mbar) ideal for mid-range applications.

• Dual differential inputs (P1 & P2) with built-in sensors to support direct measurement of pressure drop or differential across two points.

• Data-logging capability: manually store up to 99 readings or automatically log to SD card with date/time stamping and Excel-compatible export.

• Sampling interval control from 1 s to 8 h 59 m 59 s for flexible monitoring durations.

• Large back-lit LCD display and support for ten selectable units of measure to suit various regional/industry standards.

• Offset-zero (null) function, Data Hold, Max/Min recall, and the ability to disable auto-power-off for continuous logging sessions.

• Rugged, portable form factor (~190 × 68 × 45 mm, ~265 g) with included accessories such as batteries, SD card, AC adapter and case.

Includes

• Manometer/Datalogger
• Universal AC Adapter with Plugs
• SD Memory Card
• Two Quick Coupler Plugs
• Hard Carrying Case
• Six AA Batteries