液位報警器LA-1.1, LA-1.4：

Application
The LA-1.. electronic controllers serve to feed
and distribute the signals of the liquid alarm
sensors LA1S and LA25S.
Description
Two mounting types are available, wallmounting
LA1.1 and rail-mounting LA1.4.
A line break supervision is integrated for sure
operation.
There are two LEDs for displaying operational
and fault status as well as two potentialfree
changeover contacts with «safety-first»
switching action for sure alarm signalling. The
electronic controllers are equipped with an
alarm reset that may be activated or desactivated.
During delivery, it is not activated.
By using one of the contacts, a pump or a
solenoid valve in the gas conditioning system
can be switched directly and the second contact
can be used as a status alarm.
The switching point of the electronic controller
LA-1.. is adjustable via a potentiometer. At
works, a standard alignment is made.
The special electronic controller ER142 Exi
(Part no.: 03E2009/a) without line break supervision
is for the intrinsically safe feeding of the
LA 1 and LA 25 sensor (old series!) located in
a hazardous area.