DEVICE DESCRIPTION
2
9
OPTIBAR 5060
www.krohne.com
04/2021 - 4003591803 - AD OPTIBAR 5060 Exia R03 en
2.6 Ambient temperature / temperature classes
OPTIBAR * 5060 VGK5/6/D*A/W/V C/U/0/H/T with integrated electronics Z (4 …20 mA),
H (4 …20 mA/HART
®
) or A (4 …20 mA/HART
®
with SIL qualification), S, T (electronic differential
pressure measurement) P (Profibus PA), and F (Foundation Fieldbus)
The maximum permissible ambient temperatures depending on the temperature classes are
specified in the following tables.
Category 1G (EPL Ga) equipment
For applications requiring equipment category 1G (EPL Ga equipment), the process pressure of
the media must be between 0.8…1.1 bar. With the stated permissible ambient temperatures, the
80% consideration of section 6.4.2/EN 1127-1 is taken into account. The application conditions in
areas without hazardous mixtures are specified in the manufacturer information.
Category 1/2G (EPL Ga/Gb) equipment
For applications requiring equipment category 1/2G (EPL Ga/Gb), the process pressure of the
media must be between 0.8…1.1 bar. With the stated permissible ambient temperatures, the
80% consideration of section 6.4.2/EN 1127-1 is taken into account. If OPTIBAR * 5060
VGK5/6/D*A/W/V C/U/0/H/T are operated at temperatures higher than those specified in the
table above, please make sure by means of appropriate measures that there is no danger of
ignition from the hot surface.
The maximum permissible temperature of the electronics/housing should not exceed the values
given in the table above. The application conditions in areas without hazardous mixtures are
specified in the manufacturer information.
Temperature class
Ambient temperature range at the electronics and media
temperature range at the probe
T6
-20...+23°C / -4...+73.4°F
T5, T4, T3, T2, T1
-20...+60°C / -4...+140°F
Table 2-2: Application for category 1G equipment
Temperature class
Ambient temperature range at
the electronics (zone 1)
Media temperature range at the
probe (zone 0)
T6
-50...+39°C / -58...+102.2°F
-20...+23°C / -4...+73.4°F
T5, T4, T3, T2, T1
-50...+70°C / -58...+158°F
-20...+60°C / -4...+140°F
Table 2-3: Application for category 1/2G equipment
