INSTALLATION
2
9
OPTIWAVE-M 7400
www.krohne.com
10/2018 - 4007039501 - AD ATEX OPTIWAVE-M 7400 R01a
•
Make sure that the device temperature does not increase because of other heat sources
(sunlight, adjacent system components etc.). The device must not be operated above the
maximum permitted ambient temperature.
•
Do not put insulation around the signal converter. Make sure that the airflow around the
signal converter is sufficient. It is permitted to have insulation on the pipe or stilling well and
the process connection.
Temperature class for
EPL Ga/Gb, EPL Gb or EPL Gc
Maximum ambient temperature
Maximum process connection
temperature
(max. process temperature)
[
°
C]
T6
+60
+60
+53
+85
T5
+75
+75
+68
+100
T4
1
+71
+115
+65
+135
T3
2
+62
+150
+54
+180
+49
+200
1
Max. process connection temperature is +100
°
C, if the device has a PP Drop antenna
2
Max. process connection temperature is +150
°
C, if the device has a PTFE Drop antenna
Temperature class for
EPL Ga/Gb, EPL Gb or EPL Gc
Minimum ambient temperature
Minimum process connection
temperature
(min. process temperature)
[
°
C]
All classes
1
-40
-40
1
Min. process connection temperature is -20
°
C, if a Kalrez
®
gasket is used
