Emerson Process Management 760004-A - Manual (Page 10)

Instruction Manual
760004-A
February 2002
P-4 Preface Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA 2000 HFID
WARNING .
POSSIBLE EXPLOSION HAZARD
Ensure that all gas connections are made as labeled and are leak free. Improper gas connections
could result in explosion or death.
CAUTION .
OVER-VOLTAGE SPIKING
If this analyzer module is used with a non-Rosemount Analytical power supply, adding Rosemount
Analytical PN 903341 Current Protector in series with the 24V positive power line will prevent over-
voltage spiking and resultant fuse blowing when powering up the instrument.
CAUTION .
PRESSURIZED ENCLOSURE
This enclosure shall not be opened unless the area is known to be free of flammable materials or
unless all devices within have been de-energized.
Area classification for the protected enclosure:
Nonclassified.
Pressurization: Type Z
Temperature Identification Number: T4A
Power shall not be restored after enclosure has been opened (or loss of purge) until enclosure has
been purged for a minimum of 6 (six) minutes at the minimum pressure of 689 hPa (10 psig).