Endress+Hauser NRF81 - Page 47

Tankside Monitor NRF81 Operability
Endress+Hauser 47
7.3.9 Write protection switch
The operating menu can be locked by a hardware switch in the connection compartment.
In this locking state W&M related parameters are read only.
6 mm
2.5 Nm (1.84 lbf ft)
1.
HR
WP
on
SIM
A
1 2
4.
2.
3.
A0028364
1. Loosen the securing clamp.
2. Unscrew the housing cover.
3. Pull out the display module with a gentle rotation movement.
4. Using a flat blade screwdriver or a similar tool, set the write protection switch (WP)
into the desired position. ON: operating menu is locked; OFF: operating menu is
unlocked.
5. Put the display module onto the connection compartment, screw the cover closed and
tighten the securing clamp.
To avoid acces to the write protection switch, the cover of the connection
compartment can be secured by a lead seal.
A0033364
The display module can be attached to the edge of the electronics compartment. This
makes it easier to access the lock switch.