Emerson Rosemount 3051 Reference Manual page 72

Electrical installation
August 2019
A. Alarm
B. Security
4.4.1 Set Security switch
You can use the Security switch to prevent changes to the transmitter configuration data.
If you set the Security switch to Locked, the transmitter will reject any configuration
requests sent via HART
configuration data. Reference
steps below to enable the security switch.
Procedure
1.
2. Remove the housing cover opposite the field terminal side.
3. Use a small screwdriver to slide the switch to the lock position.
4. Reattach transmitter housing cover.
72
®
, LOI, or local configuration buttons, and it will not modify the
Figure 4-2
WARNING
Explosions
Explosions could result in death or serious injury.
In an explosion-proof/flameproof installation, do not remove the transmitter
covers when power is applied to the unit.
If the transmitter is installed, secure the loop and remove power.
Do not remove the instrument cover in explosive atmospheres when the circuit is
live.
Emerson recommends tightening the cover until there is no gap between the cover
and housing to comply with explosion proof requirements.
A
B
for the location of the security switch. Follow the
Reference Manual
00809-0100-4007
Rosemount 3051