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CO2 - Temperature - Humidity meter

The T-440, the efficient measuring instrument for measuring indoor air quality (CO2, humidity and temperature). The measuring technology ensures precise measurements even of high concentrations, e.g. in greenhouses.

  • Clearly structured measurement menu for long-term measurement and parallel determination of CO₂ concentration, humidity and air temperature in indoor areas
  • Absolute pressure compensation, calculation of wet bulb temperature, dew point and absolute humidity
  • Wireless probe, internal data storage and USB port for data export
  • The air velocity and IAQ measuring instrument can be expanded with a large portfolio of digital probes

Technical data:

  • Measuring range: 0 to 10000 ppm / 0 to +50 °C / 5 – 95 % RH
  • Accuracy: ±(50 ppm + 3 % of mv) 0 to 5000 ppm or ±(100 ppm + 5 % of mv) 5001 to 10000 ppm
  • Resolution: 1 ppm / 0.1 °C / 0.1 % RH
  • Operating temperature: 0 to +50 °C
  • Connectable probes: 1 x digital probe with cable or 1 x Temperature NTC TUC, 1 x digital Bluetooth probe or testo Smart Probe, 1 x Temperature TC Type K
  • Battery: 3 AA mignon 1.5 V (basic unit), 4 x type AA batteries (CO2 probe)
  • Battery life: 12 h -typically vane measurement (basic unit), 21.5 h (CO2 probe)
  • Data transfer: Bluetooth®; USB interface
  • Radio range (probe): 20 m
  • Storage temperature: -20 to +50 °C
  • Dimensions: 154 × 65 × 32 mm (basic unit) / 295 × 50 × 40 mm (CO2 probe)
  • Weight 250 g (basic unit) / 195 g (CO2 probe)

Delivery contents:

  • T-440 air velocity and IAQ measuring instrument, 3 x AA batteries, USB cable and calibration protocol,
  • CO2 probe with Bluetooth®, including temperature and humidity sensor (consisting of CO2 probe head and Bluetooth® handle); 4 x AA batteries, table stand and calibration protocol,
  • Basic case for testo 440 and 1 probe

Item-no.: 24015 – T-440 measuring unit with CO2 probe