3 flow direction, 4 sensor angle, Flow direction -3 – YSI IQ SensorNet ViSolid Sensor 700 IQ User Manual

Page 15: Sensor angle -3

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ViSolid

700 IQ (SW)

Commissioning

ba76040e04

05/2014

3 - 3

3.3.3

Flow direction

Generally, in flowing media, the measurement window should be
clearly pitched towards the flow (angle of incidence approx. 20 to 45 °).

Exception: If there is a high proportion of foreign bodies with fibrous or
flat profiles such as, e.g. hair, twines or foliage, it can be advantageous
to tilt the sensor in the direction of flow so that the measurement
window is turned away from the flow.

3.3.4

Sensor angle

Fig. 3-1

Effect of the sensor angle on scattering and reflection from the ground and
wall

Scattering and reflection are lowest at a sensor angle of
45° and at a minimum distance of 10 cm to the ground and
walls (see section 3.3.6).

0 °

20 °

45 °

10 cm

Side
view:

Marking