Watson-Marlow 620RA - Key; ATEX Marking; Summary of Modifications

20 Summary of modifications
ATEX features of 620RA pumpheads
Conductive
Rotor
The material used for the rotor body and armsincludes stainlessfibresin order to
make the rotor conductive and dissipate any electrostatic charge on the stainless rollers
Earth strap An earthing bond linksthe pumphead guard and the track
ATEX label
This isa requirement of the Directive and includes the ATEX rating for the pumphead (II
2G Ex h IIB T4 Gb X)
ATEX
manual
This manual has been produced specifically for this ATEXproduct and contains
information for safe use.
21 ATEX marking
II 2G Ex h IIB T4 Gb X
Watson-Marlow Ltd
TR11 4RU, United Kingdom
Tech. File Ref. ATEX-WM
21.1 Key
II Equipment Group II for above ground areas (surface)
2G Equipment Category 2G (Gas) - Zone 1
Ex h Ignition protection labelling for mechanical devices
IIB Group IIB – typical gas: Ethylene
T4 Temperature classification (Gas) ≤ 135°C
Gb Group II (Gas); protection Level: High
X
Special conditions of use for safe operation - See section 12 "Special conditions of use for
safe operation - Tube materials suitable for use with this equipment" on page22
PB0347:m-620atex-en-03 38
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