Functional
description
1
SYCON
3000 C
Functional description
The analytical instrument of the type SYCON
3000 C is used for the fully automatic measure-
ment of the carbonate hardness of water.
Instrument models are also available to measure
the total hardness Typ SYCON 3000 H and the
Minus m-value Typ SYCON 3000 M.
Measurements can be initiated as follows:
1. Press the "START" button on the instrument
control panel.
2. Activate an external remote switch.
3. Automatic - in programmable time intervals.
4. Automatic – after a programmable flow rate
(volume).
After the value of a predetermined limit is ex-
ceeded (overrun) or fallen below (underrun), a
shorter time interval or a lesser flow rate can be
programmed for the following automatic meas-
urement.
One-component reagents are used for different
measurement ranges. This enables high meas-
urement accuracy with minimum use of reagents,
tailored to the specific case of application. These
reagents can be kept for at least 2 years if stored
appropriately.
Water samples with a temperature over 45 °C
must be cooled prior to analysis. In order to cool
down the test water over a cooler only when the
sample is taken, it is possible to trigger a cooling-
water valve before the input valve is opened.
Each measurement begins with an adjustable
flushing phase. This ensures that the water from
the treatment plant is measured and not the water
that has remained in the supply line since the last
measurement.
Subsequently, the measuring chamber is filled
with a new sample, and the optical value is ascer-
tained without the addition of the reagent (blank
value).
During the measurement of the water hardness,
the reagent is continually added – regulated by a
stepping motor – until a colour transition is regis-
tered. The quantity of reagent used is a measure
of the water hardness.
Signal devices and valves can be switched if a
programmable limit is exceeded or fallen below
and a programme mechanism can be addressed
for the regeneration of a treatment plant.
An analogue output 0(4)-20mA signals the differ-
ent states of the instrument. A further analogue
output delivers a signal in proportion to the
measured water hardness.
In order to suppress undesired bad-water mes-
sages, the first bad messages can be ignored.
Following the measurement, the measuring
chamber is flushed immediately. This prevents a
premature contamination of the measuring
equipment through the colourants of the reagent.
The built-in feed valve is closed during the ana-
lytical pauses to prevent unnecessary water con-
sumption.
Water softening plant
SYCON 3000 C
Analytic al Instrument to Measure the Carbonate Hardness of Water
Installation example
