7
Parameter
The displayed possibilities depend from the channel set-up (conductivity
or °C) and their logic function (independent, differential, AND, OR).
1.
Press
SET
.
2.
Press
¿
or
À
until the display shows e.g. [SEt PAr1] and press
CAL
to continue or
SET
to cancel. Select [SEt PAr2] to program the
parameters of channel-2. Indicator (1) will now be replaced by (2). If
both channels have been linked by one of the logical functions, both
indicators will blink.
3.
The display shows e.g. [600µS] while (1) and (L) are blinking. Pre-set
the desired low level for channel-1 with
¿
or
À
and press
CAL
to
continue or
SET
to cancel.
4.
The display shows e.g. [800µS] while (1) and (H) are blinking. Pre-set
the desired high level for channel-1 with
¿
or
À
and press
CAL
to
continue or
SET
to cancel.
5.
The display shows the hysteresis between the ON and OFF state of
the relays e.g. [Hy=0.10] while (1) and (=) are blinking. Pre-set the
desired hysteresis for channel-1 with
¿
or
À
and press
CAL
to
continue or
SET
to cancel.
6.
The display shows the delay (s) after which the relays should be
activated, when one of the pre-set levels is exceeded, e.g. [dt=120]
while (1) and (=) are blinking. Pre-set the desired delay for channel-1
with
¿
or
À
and press
CAL
to continue or
SET
to cancel.
7.
The display shows the max. level difference from which proportional
regulation should start, e.g. [dµS=80] while (1) and (=) are blinking.
Pre-set the desired difference for channel-1 with
¿
or
À
and press
CAL
to continue or
SET
to cancel. Pre-set this value to zero for
simple ON/OFF regulations.
8.
The display shows the pulse time (s) of the relays, e.g. [Pt=15] while
(1) and (=) are blinking. The relays will pulse at a rate proportional to
the regulation difference. When the difference is superior to the pre-
set max. value, the relay is continuously activated. However, the wait-
time between the pulses increases near the high or low pre-set level.
Pre-set the desired pulse-time for channel-1 with
¿
or
À
and press
CAL
to continue or
SET
to cancel. This step is skipped for simple
ON/OFF regulations.
9.
The display shows the alarm time (s) after which the process control
should be interrupted in case of a failure, e.g. [At=360] while (1) and
(=) are blinking. Pre-set the desired alarm-time for channel-1 with
¿
or
À
and press
CAL
to continue or
SET
to cancel. Pre-set this value
to zero if no alarm is required.
10.
When both channels are linked to each other by an AND or an OR
function, the display shows the maximum allowed difference between
the 2 measurements, e.g. [dA=0.30] while (1), (2), and (=) are
blinking. Pre-set the desired value with
¿
or
À
and press
CAL
to
continue or
SET
to cancel. The process control is immediately
stopped and a general alarm is given should this value be exceeded.
The differential function between both channels permits to control a
process on the difference between two measured values. A high level
pre-set of e.g. 300 µS causes the relevant relay to be activated only
when the difference in conductivity between both channels exceeds 300
µS and NOT when one of the channels exceeds 300 µS!
