13
SONAR PROCESS MONITORING SYSTEM
SUPPLEMENT FOR ATEX ZONE 2 SAFETY
Notes:
20909-01C-EN Rev 06
• This chapter is a UL/DEMKO controlled document.
• Since this is a controlled document there will be minor
inconsistencies with other chapters (examples: page number
format and section number format)
Pending revision of this controlled document, Section 7.3.2
Barometric Pressure should read: "The range of ambient air
pressure over which validity of the Zone 2 certification of
equipment so marked applies is 56 to 109 kPa (0.56 to 1.1 bar)
(8.12 to 15.95 PSIA). This ambient air pressure range
translates into an altitude range of approximately +5000 meters
to-700 meters (+16400 feet to -2296 feet)."