Installation and Connection
page 33
rev. 00 / 04.09.2017
The NivuFlow Mobile power input accepts 12...32 V and is protected against overvoltage,
overcurrent and reverse polarity.
Charge/Discharge battery sockets
While charging only the battery plugged into the right socket is charged however.
When discharging the battery with the higher capacity (independent of the socket) is used
until the capacity of both batteries has reached the same level. After that both batteries are
discharged equally.
16 Installation of Sensors
This chapter describes the sensor types and where they are usually installed. You can find
detailed installation instructions for the individual sensor types in the installation instruction for
transit time sensors.
Note
Always ensure compliance with the safety regulations during installation works.
The transit time difference method always uses 2 sensors per measurement path. These sen-
sors shall be aligned to exactly face each other. Both sensors of a measurement path serve
both as transmitter and receiver of ultrasonic signals. The sensor pairs are matched to each
other per default. As a principle, the path sensors have the same cable length. Moreover the
sensors within a path can be identified by the serial number.
16.1 Sensor Installation Basics
The sensor installation at the measurement place extremely depends on the conditions on
site. Therefore always make sure that there are proper hydraulic conditions and an appropriate
calming section available on site. Sensor type and sensor fastening need to be determined
depending on the measurement place.
Detailed information on how to select a calming section and the installation of
sensors can be found in the according installation instruction.
The measurement place parameters need to be set prior to installation. Appropriate prepara-
tion measures and the measurement place dimensions can be taken from the respective plant
documents.
F
c
Information on how to set measurement place parameters can be found in chapter
„Parameter Setting“ starting at page 61.
16.2 Installation of Clamp-On Sensors
Clamp-on sensors allow for contactless measurement in closed and full pipelines. Here the
sensors are clamped from the outside onto pipes. The measurement itself
will not
influence
the liquid and
will not
change the flow profile of the medium.
The following parameters must be specified before installing the clamp-on sensors:
• Pipe material
• Pipe outside diameter
• Pipe wall thickness