KROHNE OPTISWITCH 6500 C EN - Manual (Page 14)

3
INSTALLATION
14
OPTISWITCH 6500 C
www.krohne.com 01/2014 - 4000649104 - MA OPTISWITCH 6500 R04 en
The operating conditions for the sliding connection in different media temperatures and
specified ambient temperatures can be found in the following drawing.
Example, how to read the drawing:
A 250 mm / 9.9" sliding connection is mounted in a tank with a total insertion length of 150 mm /
5.9". Hence the external length of the sliding connection will be:
250 - 150 = 100 mm or 9.9 - 5.9 = 4".
The media temperature will be max. 160°C / 320°F.
Read the x-axis at 100 mm / 4" an the y-axis at 160°C / 320°F and find that the ambient
temperature must be kept below 40°C / 104°F. In case the radiated heat from the tank will cause
a higher ambient temperature at the housing efficient insulation of the tank must be established.
CAUTION!
It is essential that the max. ambient temperature for the electronics is never exceeded.
Figure 3-3: Media temperature versus external length of sliding connection
a = media temperature in [°C] or [°F]
b = external length of sliding connection in [mm] or ["]
1 T
amb
= max. 40°C / 104°F
2 T
amb
= max. 60°C / 140°F
3 T
amb
= max. 75°C / 167°F
4 T
amb
= max. 85°C / 185°F