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MLT 2 / BINOS
100 F
Emerson Process Management Manufacturing GmbH & Co. OHG1 - 4
ATEX Instruction Manual
HAS8xE-IM-ATEX
January 2004
1-3-4 Purge Gas Conditions
1-3-4 Purge Gas Conditions
Purge gas: • Inert gas (e.g. Nitrogen)
• Air (from an ex-free zone)
Temperature: As ambient, but min. 20 °C to 35 °C.
Input pressure at
inlet of EEx p device: • 3,000 to 4,000 hPa (3 to 4 bar)
Minimum internal
overpressure of
the enclosure: • 1 mbar
Maximum internal
overpressure of
the enclosure: • 25 mbar
Pre-purging phase Single enclosure analyzer Dual enclosure analyzer
Duration of
pre-purging phase: 5 min. 17 min.
Flow rate during
pre-purging phase: 8 Nm³/h 7 Nm³/h
(= 133.4 l/min.) (= 117 l/min.)
Flow rate during
pre-purging phase 22 Nm³/h 22 Nm³/h
(@ 25 mbar overpressure): (= 367 l/min.) (= 367 l/min.)
Medium has to be dry and free from
dust, oil, corrosive or aggressive
components!