Testo 400 Universal Air Flow and IAQ Meter

Testo 400 touch-screen universal air flow and IAQ meter uses plug-in and Bluetooth® probes to measure flow, temperature, humidity, pressure, illuminance, radiant heat, turbulence, CO2, and CO. The meter lets you take error-free measurement with stored measurement menus.

Built-in camera, Wi-Fi, Bluetooth connectivity, and touch screen operation make field work easier. You can manage all relevant customer data, including measuring points, take photos for documentation, and email measurement reports or print them with a suitable printer on site.

Testo 400 comes with integrated differential pressure and absolute pressure sensors. The high-precision, location-independent differential pressure sensor meets the NEBB requirements for air pressure.

Measurement programs for standard-compliant measurements: volume flow, volume flow using K factor, volume flow in accordance with EN 12599, pitot tube, outlet measurement with funnel, turbulence in accordance with EN ISO 7730, PMV/PPD measurement in accordance with EN ISO 7730 and ASHRAE 55, logging mode, and stand-alone, configurable IAQ datalogger.

• Connection options for probes: two cable probes (TUC), four Bluetooth® probes, two type K thermocouple probes
• Change the probes without restarting the instrument
• Probes can be calibrated independent of the meter
• Zero-error display: Adjustment function at up to 6 measuring points
• Internal memory up to 1,000,000 measurement values
• Free testo DataControl PC software for data analysis

Model Selection Guide

Use this table to find the right model for your application.  Don't see the option you need? Call a Lesman sales specialist at 800-953-7626.

Air flow kit contents: testo 400 instrument, hot wire probe with temperature and humidity sensor, 4" vane anemometer probe head with temperature sensor, 90° angle for connecting air flow probes, 13.8" stainless steel pitot tube, two silicone pressure hoses, testo DataControl software, transport case.

IAQ kit contents: testo 400 instrument, CO2 digital probe with Bluetooth including temperature and humidity sensor and stand, CO probe with Bluetooth, pressure connection hose, USB power supply, software, transport case.

Comfort kit contents: testo 400 instrument, humidity temperature probe with Bluetooth, turbulence probe with cable, Lux probe with cable, pressure connection hose, software, USB power supply, transport case.