Process Unit 73 LF - Knick

1 Overview of the Process Unit 73 LF
Commissioning of the Process Unit 73 LF must be
carried out only by specially trained personnel in
accordance with this instruction manual and per
applicable local and national codes.
Prior to commissioning, a complete parameter setting
procedure must be performed.
Instrument Concept
Since we have largely followed NAMUR recommendations
and customer demands – especially
concerning safety, reliability and functional variety
– this instrument provides state of the art technology
showing a new standard for process instruments.
User Interface
The display interface consists of a backlit high-resolution
graphical display (240 x 64 pixels) and a
keypad.
Each key has only one function and is definitely
assigned to a menu or an input function.
In measuring mode the graphical display allows
simultaneous readout of the currently measured
value via large numerals (25 mm) and of two further
values on secondary displays, as well as display
of status messages (to NAMUR) such as
warning (maintenance required) and failure, and
limit messages.
Depending on your application, the displays can
be assigned to different variables and output values:
conductivity, resistivity, concentration, measured
and manually entered temperature, time,
date, output current values 1 and 2, input current
in %, manipulated variable (controller output).
Operator guidance is supported by a 7-line plaintext
display with information texts. During operation,
the currently measured value and active status
messages remain visible.
The keypad includes the keys (measurement),
(calibration), (maintenance),
(parameter setting), (diagnostics), a
cursor pad for selecting menu items or entering
alphanumeric characters and for confirming
your entry.
Overview 1–1