Introduction
OPERATION MANUAL
Chapter 1
CC®-Immersion circulator
V2.4.0en/08.12.20//17.12
16
1.4.2
Safety devices to DIN 12876
The rating of your temperature control unit is stated on the data sheet in the appendix.
Classification
Temperature
control medium
Technical requirements
Identification
d)
I
Non-combustible
a)
Overheat protection
c)
NFL
II
Combustible
b)
Adjustable overheat protection
FL
III
Combustible
b)
Adjustable overtemperature protection
and additional low-level protection
FL
a)
Usually water; other fluids only if non-combustible even within the temperature range of an individual fault.
b)
The temperature control media must have a fire point of ≥ 65 °C.
c)
The overheat protection can, for instance, can be realized using a suitable fill level sensor or a suitable temper-
ature limiter.
d)
Optional at the choice of the manufacturer.
Low level protection
Probably the most frequently found type today is the level monitor with a mechanical float switch.
In the bath vessel, a floating body, which is guided in a device, floats on the surface of the thermal
fluid. Depending on the level of the thermal fluid, the float device signals the electronics a
state of
good
(in case of sufficient filling) or a
state of bad
(in case of insufficient filling). You should check
the functionality of the float device from time to time. To do so and when in stand-by mode, press
the float body into the bath with a tool (e.g. a screwdriver). The electronics must report an alarm.
Overtemperature protection
(for temperature control units with heating)
Mechanical tools are no longer required for setting the trip values for the overtemperature protec-
tion. A software tool is used instead. The threshold value for the overtemperature protection can be
set only if a code randomly generated by “Pilot ONE” beforehand is entered correctly. As with the
mechanical tool, accidental settings are thus prevented. The type of overtemperature protection
function and of low level protection depends on the temperature control unit.
Rating of laboratory
thermostats and
laboratory baths
Overview of the tem-
perature thresholds
