TEMPERATURE LIMITS
2
25
OPTIFLUX
www.krohne.com
07/2010 - 7309482600 - AD EX IFC 300 R06 en
2.3.2 Field versions
•
The OPTIFLUX 6000 F is suitable for an ambient temperature range of -40...+60
°
C
(DN25...80).
•
For dust hazardous areas the maximum surface temperature is 180
°
C at an ambient
temperature T
a
≤
60
°
C.
•
The minimum process temperature is -40
°
C.
•
The maximum process temperature T
p
depends on the required temperature class T6...T3
and the maximum ambient temperature T
a
.
Temperature class
Max. process temperature Tp [
°
C]
T
a
≤
40
°
C
40 < T
a
≤
50
°
C
50 < T
a
≤
60
°
C
T6
75
70
65
T5
95
90
85
T4
130
130
130
T3
180
180
170
Use heat resistant
cables for T
p
above:
1
Not needed
150
110
1
Cables must withstand a continuous operating temperature of 85
°
C.
