IFM Electronic Efector 300 - Processing of Measured Signals; Flow Rate Measurement

7
UK
Both electrodes must be wetted by the medium� Otherwise the signal
[SEnS] for empty pipe is provided, if empty pipe detection is enabled�
4.2 Processing of the measured signals
The unit displays the current process values�
It generates 2 output signals according to the parameter setting�
OUT1/IO-Link: Parameter setting
- Analogue signal for volumetric flow quantity (→10.3)
- Communication interface (→10.6.5)
OUT2: Parameter setting
- Analogue signal for temperature (→10.4)
4.3 Flow rate measurement
An analogue signal which is proportional to the volumetric flow (4���20 mA) is pro-
vided on output 1 in case of medium flow in the measuring pipe� (On the analogue
functions→4.7)
In addition to the flow velocity, the unit also detects the flow direction� An arrow on
the unit indicates the positive flow direction�
Theflowdirectioncanbeinversed(→10.5.4).
► Use the supplied label to mark the changed flow direction�
Direction of flow corresponds to "flow direction"
> process value and display positive�
Direction of flow against "flow direction"
> process value and display negative�
Only positive process values are processed for the signal output�
4.4 Consumed quantity meter
The unit has an internal mass flow meter which continuously totals the volumetric
flow quantity� The total corresponds to the current consumed quantity�
• The quantity meter takes account of the flow direction for totalisation: