Vaisala HUMICAP HMT330 SERIES - Page 101

Chapter 4 ________________________________________________________________ Operation
VAISALA_______________________________________________________________________ 99
FST
To output the state of optional probe heating and chemical purge in
connection with SEND and R commands enter:
FST [x]<cr>
where
x = ON or OFF (default)
Examples:
>fst on
Form. status : ON
>send
N 0 RH= 40.1 %RH T= 24.0 'C Td= 9.7 'C Tdf= 9.7 'C a=
8.7 g/m3 x= 7.5
g/kg Tw= 15.6 'C ppm= 11980 pw= 12.00 hPa pws= 29.91 hPa
h= 43.2 kJ/kg
>purge
Purge started, press any key to abort.
>send
S 134 RH= 40.2 %RH T= 24.1 'C Td= 9.8 'C Tdf= 9.8 'C a=
8.8 g/m3 x= 7.5
g/kg Tw= 15.7 'C ppm= 12084 pw= 12.10 hPa pws= 30.11 hPa
h= 43.5 kJ/kg
>
where the state of the probe is indicated by the following letters and values:
N
... xxx =
N
ormal operation where h xxx= Probe heat power
X ... xxx = Sensor heating where xxx = Sensor temperature (ºC)
H ... xxx = Chemical purge where xxx = Sensor temperature (ºC)
S ... xxx = Sensor cooling
after purge
where xxx = Sensor temperature (ºC)
For more information on chemical purge, see section Chemical Purge
(Optional) on page 133.