Wika LSO.25 Uživatelský manuál Strana 27

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WIKA operating instructions models LSO.06, LSO.25 27
13334603.01 09/2010 GB/D/F/E
7. Conguration
GB
7.2 Adjustment with CAL
This is only required at the rst putting into operation or after the wiring to compensate for
all variable inuences of the measuring equipment.
Calibrate only when the sensor tip is in the medium with higher refractive index, e. g.:
Level liquid/gas = in the liquid
Separation layer e. g. water/oil = in oil
The photo transistor voltage can be measured between "GN" and "WS" of the transducer
connection with a voltage instrument (Ri ≥ 10 MOhm Messbereich 10 V=).
Voltage between GN / WS in V
dry
1)
immersed
Level (conical tip) 0.2 - 1.0
2)
4.5 - 6
3)
1) do not adjust, only check this value
2) 0.2 V at short measuring lengths and clean conical tip, up to 1.0 V at larger measuring lengths and
dirty conical tip.
3) adjust this value in the immersed condition only, the switching quality of the system transducer/
switching amplier can be inuenced by variation of this value:
approx. 4.5 V = less drop sensitive, foam insensitive
approx. 5.0 V = normal low viscous, clean application, no inuence of temperature uctuations
of
the medium up to ±25 °C
approx. 5.5 V = at strong temperature uctuations of the medium up to ±40 °C
approx. 6.0 V = detektion of condensation, foam (must have stable, reproducible qualitiy)
Voltage between GN / WS in V
dry
(lower refractive index)
4)
immersed
(higher refractive index)
Separation layer (U-tip)
0.2 - 3.0
5)
4.5 - 6
6)
4) do not adjust, only check this value
5) the tension takes o two media and at this measuring of the refractive index dierence can there-
fore vary strongly.
6) adjust this value only when the sensor tip is immersed from the medium with higher refractive
index.The switching quality of the system sensor/amplier can be inuenced by variation of this
value.
To get a stable measuring it should be tried to adjust a dierence as big as possible between these
two values
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