Hach US9001 Manuel D'utilisation page 10

Figure 7 Mounting hardware options – US9001
Figure 8 Mounting hardware options – US9003
Connect to a flow logger or sampler
Connect the cable to a flow logger or sampler. Refer to the flow logger or sampler documentation for
instructions.
Install the sensor with a primary device
A primary device is a hydraulic structure, such as a flume or weir, that has a known level-to-flow
relationship. The ultrasonic sensor measures the level of liquid in a channel that contributes to flow
(referred to as the "head") and the flow logger calculates the flow rate based on the head-to-flow
relationship of the primary device.
Note: As an alternative, the flow logger can calculate the flow rate based on the level of liquid in the channel and
the area velocity supplied by a velocity sensor. The flow rate calculation method is selected in the Flow Method
field.
10 English