Kewaunee Air Alert 600, Installation And Operating Manual

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It is very important to position the SM6 airflow sensor in the correct position to give long term stable
reading of the face velocity. Please read the INSTALLATION NOTES below and if in doubt contact us
for further advice.
INSTALLATION NOTES :-
1. The airfrlow sensor must be positioned where it can " see " the room pressure of the laboratory.The
back connection
spigot of the sensor is designed to accept a 1” OD tube which should be connected to the inner
chamber of
the fume hood. (This tube and fittings is known as the " vent kit " )
The ideal position for the end of the 1” tube for most fume hoods is 4” back from the sash glass
and 4” higher than the normal sash opening height through the inner side wall.
2. If possible mount the sensor on the front of the fume hood and use a short length of tube. Tube
lengths of
more than 40” or smaller diameter will restrict the airflow through the sensor. This will lead to too
much
sensitivity being required to calibrate the unit which can lead to some instability of the reading or
incorrect
readings at low velocities
3.The sensor should not be mounted in a position were it is subject to draughts from the laboratory air
input or ventilation system
.