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P
16
AGE
2-5 Operation principle of Sycon 2500
[1]
Washing and rinsing mixing chamber with
sample water.
Programmable rinsing time: 30 sec-10 min
[2]
Filling mixing chamber with sample water.
Monitoring of zero transmission without
indicator-injection
[3]
Stirring water sample and injecting indicator.
Homogenisation and reaction phase while
[4]
Monitor light transmitted through the sample
Evaluation of water hardness limit value alarm
[4.1]
Flushing and rinsing mixing chamber. Start of
Intervall time 5/10/20 or 30 minutes.
Note:
During Interval mixing chamber kept
filled with water.
[5]
Show result as LED light code.
In case of bad-condition-evaluation alarm is
monitoring can start..
A automtically in 4 programmable
intervals: 5 / 10 / 20 / 30 minutes
B manually by pushing the Start-button
START
S
PECIFICATION
↓
↓
stirring
↓
water.
↓
↓
issued
A monitoring cycle of Sycon 2500 follows 5 steps
The solenoid valve opens, washing and rinsing the
mixing chamber with sample water. Old sample water
remaining in the container is pushed out, and the
container is washed at the same time. Rinsing time is
programmable between 30 seconds and 10 minutes
and should be set in relation to length of sample
pipeline. Recommended values 1-2 min. (→ page 30)
The mixing chamber is filled with water sample to be
analysed. The solenoid valve closes. The light source
is activated to project light into the sample water
without indicator injection to define a zero transmission
and absorption respectively. In case of turbidity
detection in certain ranges of absortion the device
gives alarm.
The injection pump injects a defined amount of
indicator into the sample water. The stirrer coil,
activated at the same time, homogenises the mélange
of water and indicator. The indicator causes coloration
of the sample water in accordance with the hardness
components of the water. Indicators are calibrated to
change colour at certain limit values. For a list of
available indicators please refer to page 12 or 27.
Light receptors electronically monitor the light trans-
mitted through the sample water. The absorption
characteristic of transmitted light in water changes if
the water sample changes its colour (for example from
green to red) caused by a colour-reaction of indicator
with ions in water (e.g. calcium and magnesium). After
monitoring the mixing chamber is flushed.
The monitoring results in a BAD or GOOD-condition
evaluation. The status is displayed as LED code (→
page 12).
► Connecting an external no-voltage-contact-switch
or a timer may allow limit analyser monitoring only
while water softener is turned on or is suspend
monitoring
while
the
regeneration.
The purpose of remote signal is to prevent a
monitoring while the water softener is regenerating
or the feed water is stopped ( → page 26).
C
2
HAPTER
L
A
IMIT
NALYSER
water
softener
is
in
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