INSTALLATION
2
17
OPTIWAVE X400
www.krohne.com
06/2021 - 4006413503 - AD NEPSI OPTIWAVE x400 R03 en
Refer to the tables that follow if:
•
you replace an OPTIWAVE 7300 signal converter with the OPTIWAVE 7400 signal converter
without a distance piece, or
•
you replace an OPTIWAVE 6300 signal converter with the OPTIWAVE 6400 signal converter
without a distance piece.
Temperature
class for
EPL Ga/Gb,
EPL Gb or EPL Gc
Maximum surface
temperature for
Zones 20/21,
Zone 21 or
Zone 22
Maximum ambient temperature
Maximum process
connection
temperature
(max. process
temperature)
Aluminium
housing
Stainless steel
housing
[
°
C]
T6
T85
°
C
+60
+60
+60
+50
+43
+85
T5
T100
°
C
+75
+75 (+67)
1
+75
+65
+58 (+56)
1
+100
T4
T135
°
C
+67
+56 (+49)
1
+115
+59
+43 (+40)
1
+135
T3
T150
°
C
+54
+33
+150
1
Values in parentheses are for Ex d ia- or Ex iaD tD-approved devices
Temperature
class for
EPL Ga/Gb,
EPL Gb or EPL Gc
Maximum surface
temperature for
Zones 20/21,
Zone 21 or
Zone 22
Minimum ambient temperature
Minimum process
connection
temperature
(min. process
temperature)
Aluminium
housing
Stainless steel
housing
[
°
C]
All classes
1
All surface
temperatures
1
-40
-40
-40
-36
-33
-50
1
Min. process connection temperature is -20
°
C, if a Kalrez
®
6375 gasket is used. Min. process connection temperature is -30
°
C, if a
Metaglas
®
feedthrough is used. Min. process connection temperature is -40
°
C, if the device has a Horn or Drop antenna with an
FKM/FPM gasket.
