KROHNE OPTIWAVE 7300 C Supplementary Instructions Manual page 11

OPTIWAVE 7300 C
WARNING!
An explosive atmosphere is a mixture of air and flammable gases, vapour, mist or dust in
atmospheric conditions. If you do not use the device in these conditions (T
-4...+140
°
T = atmospheric temperature and p
atm
WARNING!
If the device must operate at a high process temperature, make sure that the maximum flange
temperature and maximum ambient temperature are not more than the values given in the
table.
The maximum permitted process temperatures are applicable in these conditions. Refer also to
the tables that follow.
• Device installation must agree with the instructions given in the handbook.
• 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 (stilling well) and
the flange.
EPL Ga: Ex ia devices only
Temperature
class
T6
EPL Ga/Gb: Ex ia and Ex ia/d devices
Temperature
class
T6
T5
T4
07/2015 - 4000176503 - AD IECEX OPTIWAVE7300 R03 en
F and p = 0.8...1.1 barg / 11.60...15.95 psig), do an analysis of the risk of ignition.
atm
Ambient temperature
[°C]
-20...+57
Ambient temperature
[°C]
-40...+57
-40...+72
-40...+80
= atmospheric pressure.
atm
[°F]
-4...+122
[°F]
-40...+134
-40...+161
-40...+176
www.krohne.com
INSTALLATION
= -20...+60
atm
Flange temperature
(process temperature)
[°C]
-20...+60
Flange temperature
(process temperature)
[°C]
-20...+60
-20...+60
-20...+60
2
C /
°
[°F]
-4...+140
[°F]
-4...+140
-4...+140
-4...+140
11