IE-HGS-H5(6)0XX-05
8
value. This fact adds a noise of typ. ±30 ppm which has to be considered in terms of accuracy. From
the principle of measurement, the measured value of CO
2
concentration depends on the value of air
pressure - altitude at the installation site. For this reason, it is suitable for accurate measurement to
set the altitude of the installation site by TSensor software.
After power up there is internal check in progress and takes about 20 s. During this time LCD
display shows (----) instead of CO
2
concentration value.
Parameter setting description is into chapter “
at page 10.
5.4.
Actual regulator preset
It is possible to display actual regulator preset on its LCD display by pressing of „
“ key. LCD
shows information about Relay1 and then Relay2 setting step by step. Information about Relay1 are
indicated with symbol „
“, for Relay2 with symbol „
“ (at right top corner of
LCD). It is possible to edit parameters after pressing „
SET
“ key and entering of correct password
„
PASS
“ – see chapter „
Change of “Password for setting through keys” (PASS)“
at page 10.
Following examples are for Relay1 setting, similarly are displayed values for Relay2. Pressing of
„
ESC
“ key ends this mode and switch to actual value displaying, the same occur if more than 20 s is
not pressed any key.
5.4.1. Value assigned to output relay
None, relay is still off
Temperature at °C
Relative humidity
Computed value – dew point temperature
CO
2
concentration
5.4.2. When close output relay
High limit „HI“
–
the relay closes when measured value exceeds preset „high limit” for longer
time than preset „delay time“. Relay goes open when measured value decrease under „high limit“
value minus the „hysteresis” value. See example.
High limit „HI“
Delay [s]
Hysteresis
