ADJUSTMENT
Analog
capacitive sensors are equipped with a 20-turn spindle
potentiometer. This allows adjustment of anapplication specific operating range between the minimum distance “0 mm” and the type-typical maximum
value. Consequently, the full output current range (4...20 mA) is always present, regardless of the required
measuring distance. The
analog sensors of series 80 are designed with a 2-colour LED which facilitates
adjustment. Outside the operating range I nominal sensing distance
A < 4 mA and I are based on the measuring method according to DIN VDE0660, Part 208. The respective nominal sensing distance is indicated with a tolerance of
A > 20 mA green light is emitted to display operationalreadiness. Within the operating range of 4...20 mA the LED is yellow. In the undamped state the output
current value is > 20 mA and moves with the reduction of the object distance toward 4 mA (value at total
damping approx. 2.5 mA). In the case of series 40 the current characteristic is reverse-proportional to the
object-distance.The data of the + 10 %. Thestandard measurement plate is square with a thickness of 1 mm and is made of carbon steel FE 360
(defined in ISO 630: 1980 ) with a smoothed surface and earthed. The side lengths are equal to the
diameter of the active area of the KAS or equal to 3 x Sn, depending on which value is greater. With a
different material or a smaller surface of the actuating element, the sensing distance is smaller Adjustment of the sensing
distance is made by means of
a spindle potentiometer with the
screwdriver provided. With
pluggable sensors > M18x1 / Ø20 the potentiometer is on the
side.For size M30x1.5 / ∅ 30:First open plastic tab.
For size > M30x1.5 / ∅ 30:First remove
plastic sealing screw. Typ. response-time characteristic The possible sensing distance for a particular material is dependent on the dielectric permittivity ε
r andcan be worked out by means of the typical reduction factors:
Sensing distance = Sn x reduction factor.
:lairetaM 063EF 73tSretaW taehWdooW ssalGliO CVPEP cimareC rotcafnoitcudeR.xorppa 1 11 8,07,0 6,04,0 4,073,0 3,0 All specifications are subject to change without notice. (05/2004) 6
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