Nivus NivuFlow 750, Инструкция по эксплуатации

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Instruction Manual
NivuFlow Mobile 750
page 78 NFM 750 - rev. 03 / 27.05.2020
Sensor detection
The transmitter does not recognise the type of 2-wire level sensor. Hence, the indication of
the sensor in the display is not crucial for the measurement range.
As standard the transmitter indicates the 2-wire level sensor as ultrasonic sensor from the
top.
Example:
Air-ultrasonic sensor on the top with beam direction from top down; pressure sensor and wa-
ter-ultrasound on the channel bottom.
The level sensors are shown within the channel shape previously specified when setting the
measurement place parameters.
Fig. 36-8 Level sensor selection
Select from the following level sensors:
•
Integrated pressure
Level measurement from the bottom using a combi sensor with integrated pressure cell
(Type V2D or V2U).
Lateral installation possible, e.g. in case of sedimentation or high pollution loads.
Level measurement possible even in case of impoundage.
•
2-wire level
The level is measured by using an external 2-wire sensor supplied by the transmitter.
Example: pressure probe Type NivuBar Plus
The use of 0/4…20 mA signal from external transmitters such as NivuMaster or Multi-
Ranger can be enabled in this menu as well.
•
i-Series sensor
Connection of NIVUS i-Series ultrasonic sensors on analog input AI 1.
•
NIVUS air-ultrasound
The level is measured from the top down using an air-ultrasonic sensor Type DSM-L0.
This sensor is used to measure low flow levels. The level sensor shall be installed ex-
actly in the centre of the channel crown (±2°) parallel to the water surface.
•
Integ. water-ultrasound
The level is measured from the bottom up with the Type CSP-V2H or CS2-V2U combi
sensor using water ultrasound. This sensor type is appropriate for discharge detection
in medium part filled areas. The combi sensor shall be installed exactly in the centre of
the bottom (deviation ±2°).
The sensor however can be placed out of the centre in the event of sedimentation or