TESTO 440 Set1 delta p anemometer (0563 4409)

Measuring differential pressure and air velocity accurately in HVAC and cleanroom environments is challenging without a reliable instrument. The TESTO 440 Set1 delta p Anemometer addresses this by combining a high-precision differential pressure sensor with versatile measurement functions in one portable device.

Who is it for

HVAC technicians, facility managers, and cleanroom operators who need to measure differential pressure, air velocity, and volume flow for system balancing, filter monitoring, or ventilation checks.

Main features

• Differential pressure range: 0 to 2000 hPa
• High accuracy: ±(0.05 Pa + 1% of mv) at 0–1 hPa, ±(0.1 Pa + 1.5% of mv) at 1–25 hPa, ±(0.2 Pa + 1.5% of mv) at 25–2000 hPa
• Color graphic display for clear readings
• Internal memory for 7500 measurement protocols
• USB and Bluetooth connectivity for data export and Testo Smart App
• Timed and multi-point mean calculation, volume flow calculation
• Selectable units: Pa, hPa, mbar, psi, inH2O, mmH2O, mmHg, kPa, m/s, fpm, m3/h, l/s, cfm
• Powered by 3 x AA batteries or USB, with approximately 12 hours battery life

Specifications

• Product type: Multi-function measuring instrument
• Primary measurement parameters: Differential pressure, air velocity (via dP)
• Differential pressure sensor type: Piezoresistive
• Operating temperature: -20 to +50 °C
• Protection class: IP54
• Housing material: ABS / PC
• Data export: CSV via USB

Tips

For accurate air velocity measurements, use the included connection hose and ensure proper zeroing before each session. The Testo Smart App allows remote monitoring and data logging via Bluetooth.