Pneumatic Tubing Requirements; Protective Gas Supply Requirements, Pneumatic - Pepperl+Fuchs 1001A Series Installation And Operation Manual

Model 1001A Installation and Operation Manual
Protective Gas Supply Requirements
The protective gas supply to the protection system must be a
clean, instrument quality compressed air or nitrogen and must
contain no more than trace amounts of fl ammable gas, vapor
or dust.
The protective gas supply compressor intake must originate
in a nonhazardous location. Suction duct passing through a
hazardous location and the protection system tubing and piping
must be fabricated from noncombustible materials suitable for
prevailing hazards and environmental conditions.
The protective gas supply must originate from a dedicated
instrument quality compressed air header (1/2" pipe or larger),
no farther than twenty (20) feet from the protection system.
Local compressors and gas cylinders should not be used
before consulting with Pepperl+Fuchs.
The protective gas supply to the protection system must be
equipped with a tamper-proof regulator set at 5 psi maximum.
Exception: If the protected enclosure(s) is equipped with a
Pepperl+Fuchs Enclosure Protection Vent, the protective
gas supply to the protection system must not exceed
120 psi maximum, 5 psi minimum. (See page 3, "System
Specifi cations" for additional information concerning protective
gas supply requirements.)
SC-4
SYSTEM SUPPLY FITTINGS
EFC-4
ENCLOSURE SUPPLY & REFERENCE FITTINGS
MULTIPLE ENCLOSURE CONNECTION FITTING
12

Pneumatic Tubing Requirements

NC-4
EBC-4
EPC-10
Pneumatic Connection Requirements
ALL FITTINGS MAY BE CUSTOMER OR FACTORY FURNISHED
1. For system supply, one (1) SC-4 1/4" male straight
connector or one (1) NC-4 1/4" male elbow connector or
equivalent fi tting per system.
NOTE: Above fi tting is required only if protection system
is furnished with an optional in-line fi lter kit (model ILFK)
accessory. See photo on page 8.
One (1) similar fi tting that will connect the inert gas supply
tubing to the inert gas supply header connection point and
one (1) lot of 1/4" O.D., .035" wall thickness, welded or
seamless stainless steel tubing.
2. For enclosure supply, one (1) EFC-4 1/4" fl ush connector,
or one (1) EBC-4 1/4" feed-through connector or equivalent
fi tting per system.
3. For enclosure reference, one (1) EFC-4 1/4" fl ush connector,
or one (1) EBC-4 1/4" feed-through connector or equivalent
fi tting per system.
4. One (1) lot of 1/4" O.D., .035" wall thickness, welded or
seamless stainless steel tubing.
NOTE: Above fi ttings and tubing are not required if
System is furnished with an enclosure connection kit
(Model ECK) accessory. See photo on page 8.
5. For multiple enclosure connections, two (2) EPC-10 1/2"
pipe mounting hubs or equivalent and 1/2" 150# rated pipe
couplings & unions per interconnection.
One (1) lot 150# rating 1/2" galvanized or aluminum pipe
and fi ttings, fully reamed and unrestricted.
PM Pneumatic Connection Requirements
In addition to item numbers 1, 4 and 5 above, the following
fi ttings are required for all PM confi gurations.
1. For system supply on PM confi gurations, one (1) additional
EBC-4 or equivalent 1/4" through bulkhead fi tting per
system is required.
2. For atmospheric reference, one (1) PRB-4 or equivalent 1/4"
female bulkhead fi tting and stainless steel sintered element
is required.
PRB-4
SYSTEM ATMOSPHERIC REFERENCE FITTING