DEVICE DESCRIPTION
2
7
OPTISWIRL 5080
www.krohne.com
07/2020 - 4008054001 - AD OPTISW5080 Exd Gb-Db en R01
2.3 Safety specifications
2.4 Flammable products
Atmospheric conditions:
Atmospheric conditions:
Atmospheric conditions:
Atmospheric conditions:
The standard atmospheric conditions under which it may be assumed that Ex equipment can be
operated are:
•
Temperature: -20...+60
°
C / -4...+140
°
F
•
Pressure: 80...110 kPa (0.8...1.1 bar) / 11.6...15.9 psi
•
Air with normal oxygen content, typically 21%v/v
Ex equipment operating outside the standard temperature range must be tested and certified
(e.g. for ambient temperature range -40...+65
°
C / -40...+149
°
F).
Ex equipment operating outside the standard atmospheric pressure range and standard oxygen
content is not permitted.
Operating conditions:
Operating conditions:
Operating conditions:
Operating conditions:
Vortex flowmeters operate outside the standard atmospheric pressure range, which means that
explosion protection, regardless of the zone assignment, is fundamentally not applicable for the
measuring unit (piping).
Type of protection
Hazardous area classification
Gas environment
Gas environment
Gas environment
Gas environment
Equipment protection by intrinsic safety
Equipment protection by intrinsic safety
Equipment protection by intrinsic safety
Equipment protection by intrinsic safety
(remote flow sensor only):
(remote flow sensor only):
(remote flow sensor only):
(remote flow sensor only):
ATEX category remote flow sensor: II 1 G
Equipment protection level (EPL) remote flow sensor: Ga
Ex marking remote flow sensor: Ex ia IIC T4 Ga
Equipment protection by flameproof enclosure:
Equipment protection by flameproof enclosure:
Equipment protection by flameproof enclosure:
Equipment protection by flameproof enclosure:
ATEX category compact version and remote signal converter: II 2/1 (1) G
Equipment protection level (EPL) compact version and remote signal
converter: Gb
Ex marking compact version: Ex db [ia Ga] ia IIC T4 Gb
Ex marking remote signal converter: Ex db [ia Ga] IIC T4 Gb
Zone 0 (remote flow sensor only)
Zone 1 or zone 2
Gas group IIA, IIB or IIC
Temperature class range T1-T4
Dust enviroment
Dust enviroment
Dust enviroment
Dust enviroment
Dust ignition protection by enclosure:
Dust ignition protection by enclosure:
Dust ignition protection by enclosure:
Dust ignition protection by enclosure:
ATEX category: II 2 D
Equipment protection level (EPL): Db
Ex marking remote flow sensor: Ex tb IIIC T103
°
C Db
Ex marking compact version and remote signal converter:
Ex tb IIIC T85
°
C Db
Zone 21 or zone 22
Dust group IIIA, IIIB or IIIC
Maximum surface temperature 103
°
C /
217
°
F or 85
°
C / 185
°
F at process and
ambient temperature 80
°
C / 176
°
F
Table 2-1: Safety specifications
CAUTION!
Operation with flammable products is only permitted as long as no explosive fuel/air mixture
builds up inside of the piping at the same time the atmospheric conditions are exceeded.
The operator is responsible to ensure that the flowmeter is operated safely in terms of the
temperature and pressure of the products used. In case of operation with flammable products
the measuring units must be included in the periodic pressure tests of the piping.
