Unichiller in Desktop Housing - HUBER
Unichiller in Desktop Housing - HUBER
Unichiller in Desktop Housing - HUBER
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Safety Devices to DIN12876<br />
- Low level switch<br />
- Adjustable over-temperature switch (also valid for units with heat<strong>in</strong>g)<br />
Classification of Laboratory Thermostats and Baths<br />
Classification Thermal Fluid Technical requirement Designation d<br />
I non-flammable a Over-temperature cut-off c NFL<br />
II Adjustable over-temperature cut-off<br />
flammable b FL<br />
III Adjustable over-temperature cut-off<br />
and extra low-level switch<br />
a Normally water; other fluids only when they are non-flammable <strong>in</strong> the event of a s<strong>in</strong>gle<br />
failure.<br />
b<br />
The thermal fluid must have a flame po<strong>in</strong>t ≥ 65 °C, this means that ethanol can only<br />
be used under constant supervision.<br />
c<br />
The over-temperature protection can for example be provided by a fluid sensor or<br />
a suitable over temperature switch.<br />
d Determ<strong>in</strong>ed by the manufacturer.<br />
Temperature control units with heat<strong>in</strong>g (marked by an "-H" <strong>in</strong> the name) are designated<br />
as class III FL.<br />
Temperature control units without heat<strong>in</strong>g are designated as class I NFL.<br />
Mechanical Over-temperature Switch<br />
This temperature control unit is equipped with a mechanical over-temperature switch.<br />
For sett<strong>in</strong>g the over-temperature protection refer to chapter sett<strong>in</strong>g the overtemperature<br />
switch.<br />
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