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P
30
AGE
►
F
S P Ü L Z E IT 0 ,5 M in .
Choose the flushing time as a function of the length of the water supply so that you
have fresh sample water for the current measurement
NOTE
Depending on the design of water supply system, in addition to the hose pipe
volume another volume needs to be flushed to ensure that the analyser always
monitors a representative water sample.
We recommend a minimum flushing time of 30 seconds.
NOTE
O
S
PERATING THE
YSTEM
setting of flushing time
The flushing time before an analysis is set using the potentiometer (left of the DIP
switches) in 30 seconds (left) and 10 minutes (right).
T
30
S
10
LUSHING
IME
SEC
ÜLZEIT
SEC
→ recommendation:
a 5 meter hose pipe with inner Ø 5 mm need to be flushed app. 20 sec to 1
min. depending on fittings installed
hose pipe volume
rule of thumb:
→ one meter of a hose pipe with inner Ø 5 mm contains app. 20 ml water
→ doubling the diameter results in a fourfold volume (Ø 10 mm app. 80 ml/m)
→ The flushing efficiency of the device is limited by the cross-section in the inlet
solenoid valve and depending on water pressure. With a pressure of 1.5 bar
the washing performance is about 1 l/min, which is sufficient to rinse a 10
meter hose pipe with Ø 5 mm in app. 10-15 sec or 10 meter hose pipe with Ø
10 mm in app. one minute flushing time.
→ At higher and lower line pressures, the irrigation flow changes accordingly up
or down.
S P Ü L Z E IT 1 0 M in .
F
T
600
LUSHING
IME
SEC
2
= ¶
* R
* L
(PI)
2
2
= 3,14 * (0,25)
cm
* 500 cm = 98,13 cm
ca. 100 ml = 0,1 Liter
C
4
HAPTER
L
A
IMIT
NALYSER
3
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