Nivotemp NT-M
1 Introduction
1.1 Intended Use
Level switches are used to monitor the fill 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 Fill level monitoring
The measuring tube is located inside the tank. The level switches are located inside the measuring tube. These are activated by a
magnet inside the level switch float.
The contacts are locked into a bent rail, spaced as specified in the purchase order, but can be moved if necessary.
1.2.2 Temperature monitor
The temperature is monitored via thermal element mounted to the end of the rail. Choose from temperature contacts with
fixed increments or a resistance thermometer (Pt100).
In the case of continuous temperature measurement (model key "KT"/temperature transmitter) an analogue signal between 4
and 20mA is output.
When equipped with resistance thermometer (model key "Pt100") the temperature is output using the change in resistance
(0°C = 100Ω) of the Pt100.
1.3 Design types
The level switch can be equipped with the following options:
OV
Oval flange
FL
Flange
G1
Adapter G3/4 to G1” flange
G1
as direct screw-in unit
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.
2 Bühler Technologies GmbH BE100021 ◦ 03/2017
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