E M I S S I O N S M E S S T E C H N I K - Ribble Enviro Ltd

EiUK USER MANUAL RASI 700
OK
F1
F3
F1
PRINTER
OK or ESC
mode auto: automatic input of T gas (adoption measured T gas value)
measurement START / STOP
print-out actuel windows display
back to measurement
The Pitot tube shaft is introduced perpendicularly in to the duct, by holes made in the surface, at selected
positions.(see illustration).
The probe with the ellipsoidal nose is held parallel to and against the flow. The total pressure (+) collected
by the nose is connected to the (+) connection on the RASI 700.
The static pressure (-) collected by the static pressure intakes in the probe is connected to the - connection
on the RASI 700.
The RASI 700 will then indicate the dynamic pressure often called the velocity pressure.
The dynamic pressure corresponds to the difference between the total pressure and the static pressure.
P dyn. = P tot. + P stat.
The calculation of the gas flow velocity occurs by following formula:
Where :
P stat