2
INSTALLATION
12
OPTIWAVE X500
www.krohne.com
06/2017 - 4005809801 - AD ATEX OPTIWAVE x500 R01 en
2.3 Operating conditions
The allowable ambient temperature and related process connection temperature range for the
device depends on the temperature classes and maximum surface temperature marked on the
nameplate.
2.3.1 Ambient and process connection temperatures
The tables that follow are applicable in these conditions:
•
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 or stilling well and
the process connection.
WARNING!
The gasket temperature must be in the approved limits. For more data, refer to "Pressure and
temperature ranges" in the Installation chapter of the handbook. The type of gasket and gasket
material must agree with the process.
WARNING!
The reference point for the process temperature is the flange facing (flanges), the thread stop
(threaded connections) or the facing (hygienic connections) of the device. In the tables that
follow, this reference point will be referred to as the "process connection temperature".
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
atm
= -20...+60
°
C /
-4...+140
°
F and p
atm
= 0.8...1.1 barg / 11.60...15.95 psig), do an analysis of the risk of ignition.
T
atm
= atmospheric temperature and p
atm
= atmospheric pressure.
WARNING!
Make sure that the maximum process connection temperature and maximum ambient
temperature are not more than the values given in the tables.
