Emerson Rosemount 644 Reference Manual page 98

Troubleshooting
March 2021
WARNING
Electrical shock
Electrical shock could cause death or serious injury.
Avoid contact with the leads and terminals. High voltage that may be present on leads can
cause electrical shock.
The products described in this document are NOT designed for nuclear-qualified
applications.
Using non-nuclear qualified products in applications that require nuclear-qualified
hardware or products may cause inaccurate readings.
For information on Rosemount nuclear-qualified products, contact your local Emerson
Sales Representative.
Physical access
Unauthorized personnel may potentially cause significant damage to and/or
misconfiguration of end users' equipment. This could be intentional or unintentional and
needs to be protected against.
Physical security is an important part of any security program and fundamental to
protecting your system. Restrict physical access by unauthorized personnel to protect end
users' assets. This is true for all systems used within the facility.
CAUTION
Conduit/cable entries
The conduit/cable entries in the transmitter housing use a ½–14 NPT thread form.
When installing in a hazardous location, use only appropriately listed or Ex certified
plugs, glands, or adapters in cable/conduit entries.
Unless otherwise marked, the conduit/cable entries in the housing enclosure use a ½–
14 NPT form. Only use plugs, adapters, glands, or conduit with a compatible thread
form when closing these entries.
Unless marked, the conduit/cable entries in the transmitter housing use a ½–14 NPT
thread form. Entries marked "M20" are M20 × 1.5 thread form. On devices with
multiple conduit entries, all entries will have the same thread form. Only use plugs,
adapters, glands, or conduit with a compatible thread form when closing these entries.
Only use plugs, adapters, glands, or conduit with a compatible thread form when
closing these entries.
98
Reference Manual
00809-0200-4728
Emerson.com/Rosemount