KROHNE OPTIWAVE 7300C ATEX EN - Manual (Page 10)

2
INSTALLATION
10
OPTIWAVE 7300 C
www.krohne.com 06/2010 - 4000091504 - AD ATEX OPTIWAVE 7300 R06 en
Connection and operation of the purging connection are the responsibility of the user. The
operator is also responsible for selection of a suitable fluid to purge the device.
• If the screw is removed, make sure that the installation agrees with the Ex requirements for
the purging system.
2.2 Operating conditions
The allowable ambient temperature and corresponding flange temperature range for the device
depends on the ATEX equipment category and temperature classes marked on the nameplate.
2.2.1 Ambient and flange temperature
The ATEX equipment category and temperature class give the ambient temperature and related
flange temperature ranges for the device.
Equipment category 1 G: Ex ia devices only
Equipment category 1/2 G: Ex ia and Ex d[ia] devices
INFORMATION!
If delivered with the device, the purging connection is plugged with a
¼
NPTF screw and engaged
on a minimum of 3 ½ threads.
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.
Temperature
class
Ambient temperature Flange temperature
4...20 mA output option PROFIBUS PA or
FOUNDATION™ Fieldbus
output options
[°C] [°F] [°C] [°F] [°C] [°F]
T6 -20…+57 -4…+122 -20…+50 -4…+122 -20…+60 -4…+140
Temperature
class
Ambient temperature Flange temperature
4...20 mA output option PROFIBUS PA or
FOUNDATION™ Fieldbus
output options
[°C] [°F] [°C] [°F] [°C] [°F]
T6 -40…+57 -40…+134 -40…+50 -40…+122 -20…+60 -4…+140
T5 -40…+72 -40…+161 -40…+72 -40…+161 -20…+60 -4…+140
T4 -40…+80 -40…+176 -40…+80 -40…+176 -20…+60 -4…+140