Hazardous area supplement to the QuickStart
OPTIFLUX 4
2.
Temperature limits
2.1
OPTIFLUX 4300
•
In general the OPTIFLUX 4000-EEx flow sensors are suitable for an ambient temperature range of -40°C ... +60°C. The
temperature range is often limited further by the liner type used (refer to Quick Start).
•
The minimum process temperature is -40°C.
•
The maximum process temperature Tp is dependent on the required temperature class T6/T5..T3, the diameter and the
maximum ambient temperature Ta. For dust hazardous areas the maximum surface temperature is equal to the process
temperature Tp with a minimum of 85°C.
OPTIFLUX 4000 DN 10 -20 (EEx me coils)
Max. process temperature Tp (in °C)
Temperature class
Ta
≤
40°C
40°C < Ta
≤
50°C
50°C< Ta
≤
60°C
T6 75
70 70
T5 95
90 75
T4 130
115 75
T3 150
115 75
OPTIFLUX 4000 DN 25 -150 (EEx d coils)
Temperature class
Max. process temperature Tp (in °C)
Ta
≤
40°C
40°C < Ta
≤
50°C
50°C< Ta
≤
60°C
T6 70
70 70
T5 85
85 85
T4 120
120 120
T3 180
180 180
use heat resistant
cables for Tp above*
Not needed
155
105
OPTIFLUX 4000 DN 200 - 300 (EEx qe coils)
Temperature class
Max. process temperature Tp (in °C)
Ta
≤
40°C
40°C < Ta
≤
50°C
50°C< Ta
≤
60°C
T6 75
70 70
T5 95
90 75
T4 130
115 75
T3 130
115 75
OPTIFLUX 4000 DN 350-3000 (EEx e coils)
Temperature class
Max. process temperature (in °C)
Ta
≤
40°C
40°C < Ta
≤
50°C
50°C< Ta
≤
60°C
T6 60
60 60
T5 80
75 75
T4 115
115 115
T3
1
160
150 140
use heat resistant
cables for Tp above*
Not needed
145
110
1
For some versions the process temperature for T3 is restricted to 130°C. This version is identified by extra text on the data
sticker.
