Component Explanation - Wohler A 400 Mode D'emploi

Component explanation

S-tube probe for
Wöhler A 400, A 550, A 600 and
DC 4xx
3 Component explanation
The measurement of the ventilation loss with the S-tube probe is done 30 seconds
after having switched of the burner. It is based on the determination of the flow speed
and of the temperature of the residual core flow. The user has to enter the parameters
which are necessary for the calculation of the ventilation loss, namely the burner per-
formance, the diameter of the exhaust duct, the outside temperature and the air pres-
sure.
16
Description
Temperature range
Pitot factor
Flow speed measure-
ment
Length
for measuring holes
Data
-20°C to +400 °C,
shortly up to +800 °C
0.93
from 0.1 m/s on
260 mm
from 12 mm Ø up-
wards