KROHNE OPTIFLUX 2000-4000-5000-6000-7300-IFC 300 Ex EN - Manual (Page 25)

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.