Advanced Instruments, Inc
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Appendix A
Electrical connections require an approved explosion proof
sealing fitting and packing around wires and cables (for
incoming power for the analyzer electronics and 4-20mA
signal output) coming into and out of the explosion proof
enclosure that houses the power supply/signal output PCB.
Full compliance with hazardous area electrical code requires
the user to supply glands, fittings and/or conduit
commensurate with the level of protection or classification
desired. To maintain the ATEX certification of this unit, the
user must install ATEX approved components according to
ATEX directives. To meet the NEC standard for use in Class
1, Division 1, Group C, D hazardous areas, the user must
install the appropriate components according to NEC
standards.
Note:
The following instruction is supplied from information and data supplied by a reputable enclosure
manufacturer which we believe is reliable and is given in good faith. Since the methods of application and
conditions under which our products are put to use are beyond our control, we are not able to guarantee the
application and/or use of same. The user assumes all risks and liability in connection with the application
and use of our products.
Directions for use of Explosion Proof Packing Fiber ( non-asbestos ):
For use as packing at the hub of sealing fittings, tamp packing fiber between and around conductors where
they enter fitting to prevent leakage of the liquid cement. Leave enough space in the fitting for length
equivalent to the inside diameter of the conduit but, not less then 5/8”.
Caution: Avoid getting in eyes or breathing dust.
Use barrier cream, gloves and long sleeve shirts if dust or fiber is irritating.
Prolonged contact may cause lung, eye or skin irritation.
Directions for use
Explosion Proof Sealing Cement: Tamp packing fiber between and around conductors where
they enter the sealing fitting to prevent leakage of liquid cement. Make sure conductors are
not in contact with each other or with the wall of fitting. Leave space in the fitting for a
sealing length equivalent to the thread size of the conduit seal but not less than 5/8”
Fill the marked shipping container with clean cold water to the “water line” [35 ml to be precise].
Caution: Do not exceed the required amount of water
.
Gradually pour cement from the plastic bag into the water and stir thoroughly for proper mixture. Fill fitting
completely within five (5) minutes after mixing, then tamp with blunt stick to expel any air bubbles. Close up
any opening in the fitting to insure integrity of the seal. Fittings requiring more than 10 oz. of cement must be
filled from a single mixture of cement and water.
DO NOT POUR IN STAGES.
Allow cement at least 72
hours to cure.
Water-mix sealing compound should not be poured or installed at temperature below 40F
(4C). Maintain temperature at or above 40F for at least 72 hours after pouring. CSA certified when used
with any CSA certified sealing fitting. Adaco No. 1 sealing cement must be used as a part of any Adalet UL
listed fitting.