10
Safety Devices to DIN12876
-
Low level switch
-
Adjustable over-temperature switch (also valid for units with heating)
Classification of Laboratory Thermostats and Baths
Your temperature control unit is designated a Class III FL.
Mechanical Over-temperature Switch
This temperature control unit is equipped with a mechanical over-temperature switch.
For setting the over-temperature protection refer to chapter
setting the over-
temperature switch.
Classification Thermal
Fluid
Technical requirement
Designation
d
I non-flammable
a
Over-temperature
cut-off
c
NFL
II
Adjustable over-temperature cut-off
flammable
b
FL
III
Adjustable over-temperature cut-off
and extra low-level switch
a
Normally water; other fluids only when they are non-flammable in the event of a single
failure.
b
The thermal fluid must have a flame point
≥
65 °C, this means that ethanol can only
be used under constant supervision.
c
The over-temperature protection can for example be provided by a fluid sensor or
a suitable over temperature switch.
d
Determined by the manufacturer.
