CO,CO₂,light and sound

Everyone is exposed to different environmental influences in their day-to-day lives, for example at the workplace: illuminance, sound level and indoor air quality are all significant factors which influence people's performance and their well-being. Testo offers suitable measuring instruments for controlling each of the measurement parameters of lux, sound and CO2 (for indoor air quality).

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59 products or recommendations for CO
  • testo 425

    testo 425 - Digital hot wire anemometer with App connection

    Order-Nr. 0563 0425

    • Simple, fast and precise flow and temperature measurement plus volume flow calculation in the ventilation duct
    • More flexibility for duct measurements with the cable-connected telescopic probe (maximum length 820 mm)
  • testo 535

    testo 535 - Digital CO2 measuring instrument with App connection

    Order-Nr. 0563 0535

    • Simple, fast and precise measurement of CO₂ concentration
    • Audible alarm sounds if a limit value is exceeded
  • testo 540

    testo 540 - Light meter

    Order-Nr. 0560 0540

    • For quick ‘n easy measurements in the workplace
    • Sensor is modelled on the spectral sensitivity of the human eye
  • testo 545

    testo 545 - Digital Lux meter with App connection

    Order-Nr. 0563 1545

    • Simple, fast and precise measurement of illuminance (Lux) according to the V-lambda curve for all common light sources
    • Wide range of applications due to LED compatibility (except single-colour blue LED)
  • testo 405i German Design Award

    testo 405i - thermal anemometer with smartphone operation

    Order-Nr. 0560 1405

    • For measuring volume flow, air velocity and temperature
    • Simple configuration of the dimension and geometry of the duct cross-section for determining the volume flow
  • testo Smart Probes HVAC/R Ultimate kit

    testo Smart Probes HVAC/R Ultimate kit

    Order-Nr. 0563 0002 32

    • For all measurements involving heating, air-conditioning, refrigeration and ventilation systems
    • All Smart Probes for temperature, pressure, humidity and flow in one kit
  • testo Smart Probes VAC Kit delivery

    testo Smart Probes VAC kit

    Order-Nr. 0563 0003 10

    • Measurement of air and surface temperature, humidity, air velocity and volume flow
    • Measurement menus for volume flow measurement in ducts and at outlets, identification of mould risk, easy image documentation including IR temperature reading and measurement spot marking
  • testo 400 Universal IAQ instrument

    testo 400 - Universal IAQ instrument

    Order-Nr. 0560 0400

    • Smart, intuitive measurement programs including HVAC grid measurement as per EN ISO 12599 and ASHRAE 111, PMV/PPD and turbulence as per EN ISO 7730 and ASHRAE 55
    • High-precision, location-independent and integrated differential pressure sensor
  • testo 440 Hot Wire Kit

    testo 440 Hot Wire Kit

    Order-Nr. 0563 4400

    • Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, volume flow and air temperature in ventilation ducts
    • Convenient: integrated telescope that can be extended to 0.85 m, with scaling, makes it easy to carry out measurements
  • testo 440 Laboratory kit

    testo 440 laboratory kit

    Order-Nr. 0563 4412

    • Intuitive: Structured measurement menu for long-term measurements
    • Precise: Laboratory probe with Pt100 sensor for accurate measurement results
  • testo 440 16 mm Vane Kit

    testo 440 16 mm Vane Kit

    Order-Nr. 0563 4401

    • Intuitive: clearly structured measurement menu for volume flow and determination of air velocity in ventilation ducts
    • Convenient: integrated telescope that can be extended to 0.85 m, with scaling, makes it easy to carry out measurements
  • testo 405i

    testo 405 - Thermal anemometer

    Order-Nr. 0560 4053

    • Measurement of air velocity, volumetric flow and air temperature
    • For measurements in ventilation ducts and in rooms
  • testo 440 Lux Kit

    testo 440 Lux Kit

    Order-Nr. 0563 4402

    • Intuitive: clearly structured measurement menu for long-term measurement and determination of illuminance according to the V-lambda curve , thus for all common light sources
    • Precise: standard-compliant accuracy according to DIN EN 13032-1 and class C according to DIN 5032-7
  • testo 440 100 mm Vane Kit with Bluetooth®

    testo 440 100 mm Vane Kit with Bluetooth®

    Order-Nr. 0563 4403

    • Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, humidity and temperature in ventilation ducts or at air outlets
    • Precise: combine the vane probe with Bluetooth with the telescope for ceiling outlets or the funnel set for plate outlets (please order separately) as required
  • testo 440 CO2 Kit with Bluetooth®

    testo 440 CO₂ Kit with Bluetooth®

    Order-Nr. 0563 4405

    • Intuitive: clearly structured measurement menu for long-term measurement and parallel determination of CO₂ concentration, humidity and air temperature in indoor areas
    • Precise: absolute pressure compensation, calculation of wet bulb temperature, dew point and absolute humidity
  • testo 440 Air Flow ComboKit 1 with Bluetooth®t 1 with Bluetooth

    testo 440 Air Flow ComboKit 1 with Bluetooth®

    Order-Nr. 0563 4406

    • Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, humidity and temperature in ventilation ducts or at ventilation outlets
    • Clever: hot wire probe with telescope (0.85 m) – combine the vane probe (Ø 100 mm) with Bluetooth with the telescope for ceiling outlets or the funnel set for plate outlets (please order separately) as required
  • testo 440 Air Flow ComboKit 2 with Bluetooth®

    testo 440 Air Flow ComboKit 2 with Bluetooth®

    Order-Nr. 0563 4407

    • Intuitive: clearly structured measurement menu for volume flow and determination of air velocity, humidity and temperature in ventilation ducts or at ventilation outlets
    • Clever: vane probe (Ø 16 mm) with telescope (0.85 m) – combine the vane probe (Ø 100 mm) with Bluetooth with the telescope for ceiling outlets or the funnel set for plate outlets (please order separately) as required
  • testo 440 Indoor Comfort ComboKit with Bluetooth®

    testo 440 Indoor Comfort ComboKit with Bluetooth®

    Order-Nr. 0563 4408

    • Intuitive: clearly structured measurement menu for long-term measurement and parallel determination of CO₂ concentration, humidity, air temperature and degree of turbulence in workplaces
    • Precise: calculation of wet bulb temperature, dew point and absolute humidity – determination of the degree of turbulence and draught risk according to EN ISO 7730 / ASHRAE 55
  • testo 440 Humidity Kit with Bluetooth®

    testo 440 Humidity Kit with Bluetooth®

    Order-Nr. 0563 4404

    • Intuitive: clearly structured measurement menu for long-term measurements as well as the parallel determination of humidity and air temperature in storage, refrigerated and work rooms and also in ventilation ducts
    • Precise: calculation of dew point, wet bulb temperature and absolute humidity
  • testo 440 Delta P Air Flow ComboKit 1 with Bluetooth®

    testo 440 delta P Air Flow ComboKit 1 with Bluetooth®

    Order-Nr. 0563 4409

    • Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, differential pressure, humidity and temperature in ventilation ducts or at ventilation outlets
    • Space-saving: simply combine the universal Bluetooth handle with the 100 mm vane or hot wire probe head and the extendable telescope (1.0 m)
  • testo 440 Delta P Air Flow ComboKit 2 with Bluetooth®

    testo 440 delta P Air Flow ComboKit 2 with Bluetooth®

    Order-Nr. 0563 4410

    • Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, differential pressure, humidity and temperature in ventilation ducts, at ventilation outlets and in work rooms
    • Space-saving: combine the universal Bluetooth handle with the humidity/temperature probe head or extendable telescope (1.0 m). Vane probe heads (Ø 16 mm, Ø 100 mm) can simply be plugged onto the telescope
  • testo 416

    testo 416 - Digital 16 mm vane anemometer with App connection

    Order-Nr. 0563 0416

    • Simple, fast and precise flow measurement and volume flow calculation in the ventilation duct
    • More flexibility for duct measurements with the cable-connected telescopic probe (maximum length 850 mm)
  • testo 440 Air velocity and IAQ measuring instrument

    testo 440 - Air velocity and IAQ measuring instrument

    Order-Nr. 0560 4401

    • Intuitive: clearly structured measurement menus for volume flow, degree of turbulence, cooling/heating output, mould detection and long-term measurement, such as CO₂
    • Wireless: Bluetooth® probes for extra convenience when measuring and less cable clutter in the measuring case (please order probes separately)
  • testo 440 dP Air velocity and IAQ measuring instrument including differential pressure sensor

    testo 440 dP - Air velocity and IAQ measuring instrument including differential pressure sensor
     

    Order-Nr. 0560 4402

    • Intuitive: clearly structured measurement menus for volume flow, K-factor, degree of turbulence, cooling/heating output, mould detection and long-term measurement, such as CO₂
    • Wireless: Bluetooth® probes for extra convenience when measuring and less cable clutter in the measuring case (please order probes separately)
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