Table 1.

Characteristics of instruments for measuring indoor environmental parameters.

Indicator	Instrument	Rang	Accuracy
Temperature	WSZY-2 Recorder	−40~100 °C	±0.5 °C
Relative humidity	WSZY-2 Recorder	0~100% RH	±3%
Air velocity	WFWZY-1 Recorder	0.05~30 m/s	±0.05 m/s
CO2 concentration	WEZY-1S	0~5000 ppm	±50 ppm