Extech SDL730 Differential Pressure Manometer, -7000 to +7000 mbar, Data Logging to SD Card

HVAC technicians and industrial maintenance crews use the Extech SDL730 to measure differential pressure across filters, cleanrooms, and ventilation systems. The meter covers a bidirectional range of -7000 to +7000 mbar, with selectable units including mbar, psi, bar, kPa, hPa, mmHg, inHg, mmH2O, inH2O, kg/cm², and atm. Data logging to SD card (1GB to 16GB) allows long-term recording with a user-selectable sampling rate from 1 second to 3600 seconds. The backlit LCD shows readings clearly in dim mechanical rooms. A USB interface enables data transfer to a PC for analysis and reporting.

Key specifications

• Measurement type: differential pressure
• Pressure range: -7000 to +7000 mbar (-10.15 to +10.15 psi)
• Accuracy: ±(0.5% FS + 1 digit)
• Resolution: 1 mbar (0.001 psi)
• Data logging: SD card, 1GB to 16GB
• Sampling rate: 1 to 3600 seconds, user selectable
• Display: backlit LCD
• Interface: USB
• Power: 6 x AA batteries or optional AC adapter
• Operating temperature: 0 to 50°C (32 to 122°F)
• Operating humidity: <85% RH
• Functions: data hold, min/max, zero, offset adjustment, auto power off

Why choose it

The SDL730 combines wide-range differential pressure measurement with flexible data logging. It stores readings directly to a removable SD card, making it easy to collect and transfer data without a computer in the field. The backlit display and simple controls suit both spot checks and unattended monitoring.

Ideal use cases

• HVAC system balancing and filter monitoring
• Cleanroom pressure verification
• Industrial process pressure checks
• Laboratory fume hood testing

Good to know

The meter includes two connection hoses, a hard carrying case, six AA batteries, an SD card, and a user manual. The optional AC adapter allows continuous operation for long-term logging.