PMV/PPD measurement

A person's sense of well-being in a room (level of comfort) depends on a series of particular external influencing factors. For example, people are extremely sensitive towards thermal radiation caused by cold walls or windows. We also respond to draughts in a room with thermal discomfort. Thermal comfort is defined by the following main influencing factors: indoor air temperature and radiation temperature, air velocity, relative humidity of the indoor air. In turn, the effect of these main influencing factors on a person's sense of comfort depends on his or her (level of) activity and clothing. The international standard ISO 7730 combines all of the parameters in the PMV/PPD measurement (Predicted Mean Vote/Predicted Percentage Dissatisfied). The PMV is an index which predicts the average climate assessment value of a large group of people. The PPD Index provides a quantitative prediction of the number of people that will be dissatisfied with a certain ambient atmosphere.

1 products or recommendations for PMV/PPD measurement
  • testo 400 IAQ and comfort kit with tripod

    Order-Nr. 0563 0401

    Ideal kit for IAQ professionals, with a focus on indoor air quality and comfort level. You will receive the testo 400 universal IAQ measuring instrument with intuitive measurement menus, one CO₂ probe (with Bluetooth® handle), one turbulence probe and one globe thermometer Ø 150 mm (both with fixed cable). Use the measuring tripod to ensure standard-compliant positioning of the probes. In combination with the IAQ data logger, which is available to order separately, long-term measurements up to 2 weeks can be recorded, even without the IAQ measuring instrument.
    • Standard-compliant determination of the comfort level: PMV and PPD as well as draught and turbulence as per EN ISO 7730 and ASHRAE 55

    • Monitor the indoor air quality: Determination of CO2 concentration, humidity, air temperature and turbulence in workplaces, including long-term measurements

    • Smart, intuitive measurement programs, complete your measurement with full documentation on site at the customer’s premises or carry out further analysis using the testo DataControl measurement data management and analysis software

    • In the kit: testo 400 universal IAQ instrument, CO2 probe (with Bluetooth® handle), turbulence probe with cable, globe thermometer (Ø 150 mm) with cable, measuring tripod with bag, case

1 Products found