Schaller RH2 - Definition of product types

Page 33
7. Product types
Product type Definition Unit Measuring range Sensor
absolute
Humidity
absolute air humidity
g/m³
0 to 130 g/m³ 12004/12032/
12514/13700
Dew Point Dew Point
°C
°F
-55 °C to +60 °C
-67 °F to 140 °F
12004/12032/
12514/13700
relativ Humi-
dity
relative air humidity % RH
0 to 100 % 12004/12032/
12514/13700
EMC Wood
Wood equilibrium
moisture content
% EMC.
2 to 30 %
(wood moisture)
12004/12032/
12514/13700
EMC POM
POM equilibrium
moisture content
% EMC. 0 to 2 %
12004/12032/
12514/13700
Water
Activity
water activity aw 0 to 1
12004/12032/
12514/13700
Empty 1 - 5 Free curve for special products
CO2 CO
2
value ppm 0 to 5000 ppm 12964
Infrared
temperature
Infrared sensor
temperature
°C
°F
-25 °C to +125 °C
-13 °F to 257 °F
12513
The device automatically recognises the connected sensor and provides the correspon-
ding calibration curves.
7.1 Definition of product types
Absolute humidity
The absolute air humidity shows the contained amount of water in gramme per cubic
metre of air. The absolute humidity is a direct degree for the amount of water vapour
contained in a certain air volume. It shows how much condensate can precipitate or
how much water has to be evaporated in order to obtain the desired humidity.
Dew Point
The dew point is the temperature to which the air that is not completely saturated with
water vapour must be cooled so that it is completely saturated. When a room with the
current relative humidity cools down to the dew point temperature, the water vapour
begins to condense.