TESTO 6448 Instruction Manual page 18

4 Initial operation
Vertical installation
position, direction of flow
horizontally to the left,
sensor downwards
Vertical installation
position, direction of flow
horizontally to the right,
sensor upwards
18
Horizontal
installation
position, direction
of flow vertically
downwards,
sensor to the rear
Horizontal
installation
position, direction
of flow vertically
upwards, sensor
to the rear
Horizontal installation
position, direction of flow
horizontally to the rear,
sensor to the left (heated
sensor element upwards)
Horizontal installation
position, direction of flow
horizontally to the rear,
sensor to the right (heated
sensor element
downwards, problems
possible at low flow rates)