Weidmuller LPD450F - Display instrument for outdoor use - Handbuch (Seite 10)

10
en LPD450F
• Operation
General
The LPD450F is a field mount, 4+1/ Digit, LCD Indicator for 4-0 mA
signals.
Loop powered operation
The LPD450F draws its’ power from the 4-0 mA signal current,
resulting in a voltage drop across the unit. The voltage drop
(.5 V @ 0 mA) is equivalent to an increase in loop load of 15 Ω.
Cleaning
The case can be wiped with a damp cloth. De-energise the unit before
cleaning.
Using the peak and valley hold feature
To see the highest displayed value, hold down the ì key.
To see the lowest displayed value, hold down the Å key.
To reset either value, press P while it is on display.
Peak and Valley values are not stored when the instrument is switched
off.
Reviewing the set-up
To review the set-up, press the P key (run select switch must be in the
“normal” position). Press the Å key to scroll through the settings. A ten
second timeout applies.
Symbols
– Documentation must be consulted in all cases where this symbol
is used.