Sierra InnovaMass 240i Series, Инструкция по эксплуатации, Страница: 104 / 115

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3.1. Area Classification
Zone 1
Area in which an explosive gas atmosphere is likely
to occur in normal operation occasionally
Zone 2
Area in which an explosive gas atmosphere is not
likely to occur in normal operation and if it does
occur, is likely to do so only infrequently and will
exist for a short period only
Zone 21
Place in which an explosive atmosphere in the form
of a cloud of combustible dust in air is likely to occur
in normal operation occasionally
Zone 22
Place in which an explosive atmosphere in the form
of a cloud of combustible dust in air is not likely to
occur in normal operation but, if it does, will persist
for a short period only
3.2. Gas Grouping
Group IIA
Propane
Group IIB
Ethylene
Group IIC
Hydrogen and Acetylene
3.3. Equipment Category
2GD (Zone 2 suitable for Gasses and Dust explosive environments)
3.4. Temperature Classification for ATEX
Temperature Class Maximum Process temperature (°C) Maximum Surface Temperature (°C)
T6 40 70
T5 50 80
T4 85 115
T3 150 180
T2 250 280
3.5. Ambient Temperature Range
Ambient temperature range -20°C to +60°C
4. Safe Use of ATEX Approved Equipment
4.1. Notes on Safe Use of the ATEX Approved Equipment
Approved usage of the meter is restricted to fluids compatible with the wetted materials of the
flow meter and within the restrictions on temperature and pressure as defined in the product
manual.