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PSL 5.0 Pump Station Level Controller
SENSOR INTRINSIC SAFETY
(OPTION ISB)
When connected through Intrinsic Safety Barriers, Greyline PZ** Series sensors are certified for
installation in a hazardous location rated:
Class I, Groups C,D
Class II, Groups E,F,G
Class
III
The Intrinsic Safety Barrier may be ordered with the Greyline instrument and is supplied mounted in the
Greyline instrument enclosure. Replacement barrier fuses (Part No. ISB- 011239) may be purchased
separately. The instrument enclosure containing the ISB Intrinsic Safety Barrier must be installed in a
non-hazardous location.