Process Unit 73 LF - Knick

vanic isolation optional) allows limit monitoring of a
pressure sensor signal, for example. In addition,
the power output (10) can be used to create complete
2-wire loops, e.g. for flow or level meters.
The determined values can be read out or assigned
to limit contacts and messages.
A serial RS 485 interface (9) permits complete remote
control and readout of all measurement data
and status messages – even over long distances.
In addition to “point-to-point” connection, up to 31
devices can be connected by bus.
The NAMUR contacts (6) allow direct on-site control
of signalling units for functional check, warning
(maintenance required) and failure. The limit/controller
contacts (5) alert to out-of-limit conditions or
actuate valves or pumps for control purposes (integrated
control function). The cleaning contacts
(4) allow actuation of suitable probes for rinsing
and cleaning the cell.
Menu Structure
From the menu structure (Fig. 2–1, page 2–4), you
see how operation is strictly organized according
to the different menu groups, providing outstanding
ease of use in spite of the great functional variety.
A menu is activated by pressing the corresponding
key. At any time, also from a lower menu level,
you can return to measuring mode by pressing
.
Operation is self-explaining by operator prompting
in plaintext dialog. Even for the Administrator
level, you neither require the instruction manual
nor an additional device (terminal, laptop).
Overview 1–3