79
8013741/16LH/V1-7/2020-04| SICK
O P E R A T I N G I N S T R U C T I O N S | MCS300P Ex
Subject to change without notice
SPECIFICATIONS
9
9.4
Parameters for pressurized enclosure system
9.4.1
Protective gas
9.4.2
Enclosure data
9.4.3
Pressurized enclosure system settings for ATEX-2G
Pressurized enclosure system used: Gönnheimer F850S
Protective gas
Instrument air or inert gas
– Particle size max. 1
μ
m,
– Oil content max. 0.1 ppm,
– Dew point –30 °C (–22 °F).
Connections
– Inlet:
– G
⅜
" thread
or
– hose connection for 8 mm diameter
– Outlet:
–
For version ATEX-2G:
G 1" thread
–
For version ATEX-3G:
G ¾" thread
Inlet temperature:
+5 … +40 °C (+40 … +105 °F)
Primary pressure:
– Max.:
– Min.:
2500 hPa (2.5 bar) (36 psi) (relative)
2000 hPa (2 bar) (30 psi) (relative)
Enclosure data
Free volume:
40 l (2440 in
3
)
Minimum overpressure:
80 Pa (0.8 mbar) (0.012 psi) (relative)
Maximum overpressure:
1800 Pa (18 mbar) (0.26 psi) (relative)
Pre-purging during commissioning
Typical pre-purge time:
Approx. 6 minutes
WARNING:
Risk of explosion with incorrect parameters
▸
Do not change parameters.
(The parameter password is specific for SICK and only available for SICK Customer
Service)
F850S parameters
Setting
Valve control:
Proportional valve (P-valve)
Operating mode:
Leakage compensation
(purging not continuous)
Purge amount:
500 l (30000 in
3
))
Nominal purge pressure:
10 mbar (0.145 psi) (relative)
Minimum pressure in enclosure:
0.8 mbar (0.012 psi) (relative)
Maximum pressure in enclosure:
18 mbar (0.26 psi) (relative)
Nominal pressure in enclosure:
2 mbar (0.03 psi) (relative)
Signal pressure:
1.5 mbar (0.022 psi) (relative)
