Nivotemp NT M-XP
1 Introduction
1.1 Intended Use
Level switches are used to monitor the liquid level and temperature in fluid systems.
Level switches must not be used in highly flammable or corrosive liquids.
The medium must not contain particles, particularly metallic particles, to prevent deposits on the float or between the float and
switching tube. If necessary, filter the medium.
Please note the technical data in the appendix for the specific intended use, existing material combinations, as well as temper-
ature limits.
WARNING
All device models are solely intended for industrial applications. They are
not safety com-
ponents
. The devices must not be used if failure or malfunction thereof jeopardises the
safety and health of persons.
Use in explosive areas is
prohibited
.
1.2 Functionality
1.2.1 Liquid level monitoring
The measuring tube is located inside the tank. The reed-contact is located inside the measuring tube.
Simply put, the reed-contact works the same as a regular resistance potentiometer. The reed-contact consists of a number of
reed switches along with resistors connected in series. The total length of the chain varies by the path being monitored.
If a magnet inside a float trips the reed switch, a resistance signal proportional to the position of the float will be output. When
the float changes positions, resistances are more or less activated and the resistance signal altered based on the position of the
float. The resistance signal passes through a transformer yet and is analysed by the display unit.
1.2.2 Temperature monitor
Temperature is monitored via temperature sensor (Pt100) inside the sensor tube. Depending on the version, there are several
switching outputs combined with one analogue output (4 - 20 mA). The temperature is shown in the display.
Please note the technical data in the appendix.
1.3 Design types
The level switch is equipped with different switching and analogue outputs based on the configuration. The outputs are freely
programmable.
The level switch can be equipped with the following options:
OV
Oval flange
G1
Adapter to G1" flange
Please refer to the type plate for your equipment configuration. In addition to the job number, this also contains the item num-
ber and type designation.
3
Bühler Technologies GmbH
BE100023 ◦ 06/2021
Summary of Contents for Nivotemp NT M-XP
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