Adjustment Of Sensitivity Series - Rechner Sensors KAS-80 Series Instruction Manual

Sensitivity adjustment
Series 40/42 (KAS-40/42-...)
Our analogue sensors of the Series 40/42 have the standard signal 4...20 mA.
The following device variants are available:
Device variants
Standard signal
Output current range
With sensors IL4 the value of the signal increases when the medium approaches with sensors IL20 the
value of the signal decreases when the medium approaches.
The sensors are equipped with a spindle potentiometer.
For sensors of the series ≤ Ø12 mm / M12 a 12-turn potentiometer is
used, for sensors of the ≥ Ø18 mm / M18 series, a 20-turn potentiom-
eter is used. The potentiometer is placed under a sealing screw (A). For
some plug-in sensors (B) the potentiometer is placed on the side without
a cover.
This allows an exact adjustment between the minimum distance and the
maximum value. Thus, the full range is always available regardless of
the required measuring distance.
When mounting, make sure that the dimensions of the active surface to
the medium are not outside the maximum possible working range (see
data sheet).
The MIN value is already preset and the MAX value is set in the
application.
Install the sensor properly and place the medium to be scanned in the desired maximum position. Turn
the potentiometer screw to the right to increase the sensitivity. Using a current meter, set the current
value to 20 mA (IL4) or 4 mA (IL20).
The sensor is adjusted, the following values are measurable for the maximum distance Smax. → ≥ 20
mA (inverted: Smax. → ≤ 4 mA).
This completes the setting.
i
Important:
Please do not change filling level or object position during the adjustment!
Maintenance, repair, disposal
• Maintenance for this device is not necessary when used as intended.
• It is not possible to repair the device. If you have any problems, please contact directly your customer
service.
• Please dispose of the device in a way that is environmentally friendly according to the national
regulations.
IL4
4...20 mA
I ≤ 4 mA bis I ≥ 20 mA
A A
IL20
20...4 mA
I ≤ 20 mA bis I ≥ 4 mA
A A
Sealing screw (A)
Potentiometer (B)
15