Reference Manual
00809-0100-4360, Rev BA
August 2008
2-3
Rosemount 1151
• Explosions can result in death or serious injury. Before connecting a communicator in an
explosive atmosphere, make sure the instruments in the loop are installed in accordance
with intrinsically safe or nonincendive field wiring practice.
• Process leaks can cause death or serious injury. Install and tighten all four flange
bolts before applying pressure, or process leakage may result. Attempting to remove
the flange bolts while the transmitter is in service may cause process fluid leaks.
• All explosion-proof, flameproof, and dust-ignition-proof installations require insertion
of conduit plugs in all unused openings with a minimum of 40 ft-lb (54 N-m) of
torque. This will maintain five full threads of engagement.
• When adding a meter option to a Rosemount 1151 with an Option Code R1 terminal
block, make sure to change to cemented meter covers with a glass window. Make
sure a sticker is located inside the cover that indicates a “cemented cover.” This
cover is required to maintain explosion-proof approval.
• Explosions can cause death or serious injury. Do not remove the instrument cover in
explosive atmospheres when the circuit is alive.
• Explosions can cause death or serious injury. To meet hazardous location
requirements, any transmitter with a tag specifying Option Codes I5, I1, N1, I8, I7, or
N7 requires an intrinsically safe analog display (Part Nos. 01151-2614-0004 through
0009) or an LCD Display (Part Nos. 01151-1300-1000,01151-1300-1001).
Failure to install proper flange adapter O-rings may cause process leaks, which can result in
death or serious injury. The two flange adapters are distinguished by unique O-ring grooves.
Only use the O-ring that is designed for its specific flange adapter, as shown below.
ROSEMOUNT 3051S / 3051 / 2051 / 3001 / 3095 / 2024
ROSEMOUNT 1151
Flange
Adapter
O-ring
Flange Adapter
O-ring
PTFE Based
Elastomer
PTFE
Elastomer
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