humidity, the sensor film can become too dry or too moist.
This will lead to a temporary inaccuracy in the humidity and
dew point values.
9.2.5.4 Calculating the Dew Point
The dew point is calculated by applying the following
formula to the current temperature and humidity values:
T
DC
= (T
C
– (14.55 + 0.114 * T
C
) * (1 – (0.01 * RH))
- (( 2.5 + 0.007 * T
C
) * (1 – (0.01 * RH)))³
- (15.9 + 0.11* T
C
) * (1 – (0.01 * RH))
14
)
Cf.: H. Dean Parry, 1969: "The semiautomatic computation of rawinsondes",
T
echnical memorandum WBTM EDL 10, U.S. Department of Commerce, Environmental
Science Services Administration
, Weather Bureau, Silver Spring, MD (October), page 9
and page ii-4, line 460.
Please note that inaccuracies in the temperature and
humidity values influence the accuracy of the dew point
calculation.
9.3 Conformity
Querx fulfills the following EU-regulations:
Interference immunity:
EN 61326-1:2013 Class A
EN 61000-4-2:2009
EN 61000-4-3:2011
EN 61000-4-4:2013
EN 61000-4-6:2009
EN 61000-4-8:2010
Interference emission:
EN 61326-1:2013 Class B
EN 55011:2011
RoHS:
EU Directive 2011/65/EU
Appendix
93
