Indoor air quality

The carbon dioxide concentration and the indoor air quality in interiors are deemed to be the most important indicators that the quality of the indoor air is good enough, when people themselves are the main source of emissions. Poor indoor air quality leads to tiredness, lack of concentration and can even bring about illnesses. The CO2 concentrations should therefore not exceed 1,000 ppm as a rule.

85 products or recommendations for Indoor air quality
  • testo 435-3 - Multifunction meter w/ integrated differential pressure

    Order-Nr. 0560 4353

    The testo 435-3 multifunction meter is perfect for monitoring, analyzing, and diagnosing indoor air quality, wherever you need to take important IAQ measurements. In addition, you can easily pinpoint and troubleshoot airflow problems with HVAC systems, and immediately see the results of corrections. Commissioning, validating, benchmarking, or simpy adjusting HVAC systems are all easy with the testo 435-3.
    • Integrated differential pressure measurements for flow velocity

    • Optional wireless (RF) temperature probes for remote measurement

    • Backlit LCD for easy viewing

    • Optional printer allows for easy documenting of measured data

  • testo 435-4 - Multifunction meter w/ memory, software, and differential pressure

    Order-Nr. 0563 4354

    The testo 435-4 multifunction meter is perfect for monitoring, analyzing, and diagnosing indoor air quality, wherever you need to take important IAQ measurements. In addition, you can easily pinpoint and troubleshoot problems with HVAC systems, and immediately see the results of corrections. Commissioning, validating, benchmarking, or simpy adjusting HVAC systems are all easy with the testo 435-4.
    • Integrated differential pressure measurements for flow velocity

    • Optional wireless (RF) temperature and humidity probes for remote measurement

    • Backlit LCD for easy viewing

    • Built-in memory stores up to 10,000 measurements

  • testo 445 - Service instrument for air conditioning / ventilation systems

    Order-Nr. 0560 4450

    You can keep a close eye on indoor air quality with the testo 445 climate measuring instrument; this versatile tool can measure up to 6 parameters (with the appropriate probe), which can help you make a professional assessment of indoor air quality. This climate measuring instrument supports you in adjusting and checking ventilation and air conditioning systems.
    • Multi-function climate measuring instrument: measure up to 6 measurement parameters at the same time

    • Internal reading memory for up to 3,000 readings

    • Automatic allocation of the duct cross-section to the measuring location (max. 99 measuring locations)

    • Automatic mean value calculation and determination of the volume flow

  • testo 480 - Digital temperature and humidity meter

    Order-Nr. 0563 4800

    Air flow measurements in ventilation ducts, temperature measurements in laboratories, humidity measurements in production, pressure difference measurements in clean rooms – the testo 480 temperature and humidity meter comes with a wide range of optional sensors that allow you to measure, analyze, and log these and a variety of other parameters with only one device.
    • High quality optional sensors for measuring air flow / temperature / humidity / pressure / degree of turbulence / heat radiation / CO2 / illumination intensity / PMV / PPD / WBGT

    • High precision, integrated pressure difference sensor included

    • Pro-software for easy and efficient analysis and logging included

    • Intelligent calibration concept

  • testo 435-2 - Multifunction meter w/ memory and software

    Order-Nr. 0563 4352

    The testo 435-2 multifunction meter is perfect for monitoring, analyzing, and diagnosing indoor air quality, wherever you need to take important IAQ measurements. In addition, you can easily pinpoint and troubleshoot problems with HVAC systems, and immediately see the results of corrections. Commissioning, validating, benchmarking, or simpy adjusting HVAC systems are all easy with the testo 435-2.
    • Built-in memory stores up to 10,000 measurements

    • Optional wireless (RF) temperature and humidity probes for remote measurement

    • Backlit LCD for easy viewing

    • Optional printer allows for easy documenting of measured data

  • testo 440 - CO2 kit with Bluetooth

    Order-Nr. 0563 4405

    This testo 440 kit is great for carrying out indoor air quality measurements. The testo 440 air velocity and IAQ measuring instrument and its CO2 probe with humidity/temperature sensor can all be safely stored in the included case.
    • Intuitive: Clearly structured measurement menus for long-term measurements 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

    • Convenient: Wireless probes, internal memory for data storage, and USB port for data export

    • Versatile: Your testo 440 setup can be expanded with a large selection of digital probes

  • testo 440 - Indoor comfort ComboKit with Bluetooth

    Order-Nr. 0563 4408

    This testo 440 kit is great for evaluating indoor air quality and determining draft risk and degree of turbulence in workplaces. The testo 440 air velocity and IAQ measuring instrument and its CO2 probe with humidity/temperature sensor and turbulence probe can all be safely stored in the included case.
    • Intuitive: Clearly structured measurement menus 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 draft risk according to EN ISO 7730 / ASHRAE 55

    • Convenient: Wireless probes, internal memory for data storage, and USB port for data export

    • Versatile: Your testo 440 setup can be expanded with a large selection of digital probes

  • testo 315-3 - CO and CO2 meter for ambient measurements

    Order-Nr. 0632 3153

    The high-quality testo 315-3 is an easy to use, ruggedly designed CO and CO2 meter for quick and reliable ambient measurements according to DIN EN 50543 standard.
    • High-precision electrochemical CO sensor, shock resistant infrared CO2 sensor

    • Visual and audible alarm when thresholds are breached – adjustable thresholds

    • Rugged design

    • Rugged sensors

  • testo 315-3 Bluetooth - CO and CO2 meter for ambient measurements

    Order-Nr. 0632 3154

    The high-quality testo 315-3 is an easy to use, ruggedly designed CO and CO2 meter that enables you to carry out quick and reliable ambient measurements according to DIN EN 50543 standard.
    • High-precision electrochemical CO sensor, shock resistant infrared CO2 sensor

    • Visual and audible alarm when thresholds are breached – adjustable thresholds

    • Rugged design

    • TÜV certified according to DIN EN 50543 standard

  • Waterproof Immersion Probe

    Order-Nr. 0602 1293

    A Type K Thermocouple waterproof immersion/penetration probe. This probe is capable of reading temperature values from -76.0° to 752.0 °F.
    • Thermocouple type K

    • Response time of 7 seconds

    • Waterproof

    • Measuring range: -60 to +400 °C

  • Temperature Probe with Magnet

    Order-Nr. 0602 4892

    Temperature probe with magnet for surface measurements on metal surfaces.
    • Self-adhesive thanks to a magnet: probe for measuring surface temperature on metal surfaces

    • TC Type K temperature probe with 1.6 m cable

    • Measuring range: (-60 to 750 °F) -50 to +400 °C

  • Air Probe (Type K)

    Order-Nr. 0602 1793

    Air Probe with a Type K connection allows you to accurately measure air temperature. Compatible with any Testo product with a Type K connector, this Air Probe is a solution for a variety of temperature applications.
    • Thermocouple type K 

    • Short response time thanks to the exposed sensor 

    • Can be connected to a wide range of measuring instruments

    • Measuring range: -60 to +400 °C

  • Pipe Clamp Surface Probe

    Order-Nr. 0602 4592

    Pipe clamp probe for measuring pipes with a diameter of 0.2” to 2.5''.  Probe is capable of short term measurements of up to 536 °F.
    • Enables quick, easy attachment of the probe to pipes with a diameter of 0.2” to 2.5”

    • TC Type K temperature probe with 4 foot cable

    • Measuring range: -76 to 266 °F, briefly up to 536 °F

  • IAQ Probe - IAQ Probe

    Order-Nr. 0632 1535

    Designed to be used in applications that require multiple measurements, the IAQ simultaneously monitors CO2, relative humidity and temperature. The IAQ Probe has a MiniDIN connection.
    • 4 functions in one probe: measurement of CO2, humidity, temperature and absolute pressure

    • Rapid checking of the indoor climate

    • Prevention of poor air quality in indoor rooms via CO2 measurement

  • Air Probe - NTC

    Order-Nr. 0613 1712

    NTC Air Probe with a miniDIN type connection allows you to accurately measure air temperature. Compatible with any Testo product with a miniDIN connector, the NTC Air Probe is a solution for a variety of temperature applications.
    • NTC temperature sensor

    • High level of accuracy of up to ±0.2 °C 

    • Short response time thanks to the exposed sensor

    • Measuring range: -50 to +125 °C

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