Lightning Audio 7532 - Manual (Page 38)

Operation Radar Tank Gauge
38 Installation and Operations Manual
5.3.2 Unlocking of configuration mode
If an attempt is made to change parameters when the instrument is locked, the user is
automatically requested to unlock the instrument:
"unlock parameter" (0A4):
By entering the unlock parameter (on the display or via communication)
100
= for HART devices
the 7500 RTG is released for operation.
Hardware lock:
After pressing the O and S and F keys at the same time, the user is asked to enter the
unlock parameter
100
= for HART devices.
Caution!
Changing certain parameters such as all sensor characteristics, for example, influences
numerous functions of the entire measuring system, particularly measuring accuracy.
There is no need to change these parameters under normal circumstances and
consequently, they are protected by a special code known only to the Varec service
organization. Please contact Varec if you have any questions.
⇒
O
and
S
and
F
press simultaneous
⇓
Please enter unlock code and confirm with F .
⇓
E + –