Operating manual 27.09.2011 CC Heating Thermostats - HUBER
Operating manual 27.09.2011 CC Heating Thermostats - HUBER
Operating manual 27.09.2011 CC Heating Thermostats - HUBER
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Safety Devices to DIN12876<br />
12<br />
- Low-liquid level protection<br />
- Adjustable over-temperature protection (also valid for chillers with heating)<br />
Table 2 – Classification of laboratory circulators and laboratory baths<br />
Class Heat transfer<br />
Technical requirement Marking<br />
designation liquid<br />
d<br />
I non-flammable a overheating protection c NFL<br />
II adjustable overheating protection<br />
flammable b adjustable over-temperature<br />
FL<br />
III<br />
protection and additional low-liquid<br />
level protection<br />
a<br />
Usually water; other liquids only if they are non-flammable within the temperature range<br />
in single fault condition<br />
b<br />
Bath liquids shall have a flash point ≥ 65 °C, this means if ethanol is used, only<br />
supervised operation is possible.<br />
c<br />
Overheating protection can be by using for example a suitable liquid level sensor or<br />
a suitable temperature limiting device.<br />
d Optional at the manufacturer`s discretion.<br />
Your temperature control unit is designated a Class III FL.<br />
The type and function of the over-temperature protection and low-level protection is<br />
dependent on the temperature control unit.<br />
Monitoring of the over-temperature is the same for all <strong>CC</strong>-<strong>Thermostats</strong>. As, there are<br />
models with two sensors and models with only one sensor.<br />
Two diferent types of low-level protection are available (depending on the model):<br />
1. Temperature control machines with classical float (e.g. ministats)<br />
2. Temperature control machines with an electronic low-level protection (e.g. K6cc-NR)