Ametek Drexelbrook ThePoint Series - 2.2 Explosion Proofing Considerations

ThePoint Series
6
• When installing ThePoint instrument, ambient temperature
at electronics must not exceed 70°C (158°F).
• When installing ange-mounted sensing elements, keep
mating surfaces and bolts free of paint and corrosion to
ensure proper electrical contact with vessel. Avoid using
excessive amounts of Teon™ tape when installing threaded
sensing elements.
• Install systems with threaded NPT connection via wrench
ats on the process connection ONLY.
• Locate sensing element to avoid enhancing electrostatic
discharge from process medium, as is good practice with
any thermowell, displacer, or sampler. This includes correct
bonding to tank or silo wall.
• If installation area is rated explosion proof and requires
conduit seal ttings, they should be used in accordance with
company standards and local codes.
2.2 Mounting and Installation Guidelines (continued)
WARNING:
ThePoint equipment is rated explosion proof. When installing
in explosion hazardous areas [rated “potentially hazardous”
(EU) or “hazardous classied” (USA)] observe all national and
local regulations as well as specications in the certicate.
Mount sensing element using the following installation
guidelines. Refer to Figure 2-2.
NOZZLE
NOZZLE
Wall build-up
does not extend
past first
insulator.
Cote-shield must
extend through
nozzle and wall
build-up by 2".
Wrong
Nozzle too long;
Cote-shield too short.
Factory-supplied Cote-shield
extends through nozzle and
wall build-up.
Best
Best
No Nozzle
Good
Long Nozzle
Figure 2-2
Installation Considerations