Page 6 of catalogue Inductive sensors of Rechner Industrie-Elektronik GmbH

ADJUSTMENT
Analog Inductive sensors are equipped with a 20-turn spindle potentiometer. This allows adjustment of an application 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 10 are designed with a 2-colour LED that facilitates adjustment. Outside the operating range IA < 4 mA and IA > 20 mA green light is emitted to display operational readiness. 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).

The data of the nominal sensing distance are based on the measuring method according to DIN VDE 0660, Part 208. The respective nominal sensing distance is indicated with a tolerance of + 10 %. The standard 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 IAS 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

Sensing distance

Adjustment of the sensing distance of the inductive analogue Sensors is made by means of a spindle potentiometer with the screwdriver provided.

Typical response-time characteristic

The possible sensing distance on a particular metal can be worked out by means of the typical reduction factors: Sensing distance = Sn x reduction factor.

Metal type: Reduction factor approx.

F E 360

S t 37

CrNi

V 2A

V 4A

Ms

Al

Cu

Au

1

1

0.85

0.75

0.7

0.45

0.4

0.3

0.24

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RECHNER Industrie-Elektronik GmbH • Gaußstraße 8-10 • D-68623 Lampertheim • Tel. +49 (0) 62 06 50 07-0 • Fax +49 (0) 62 06 50 07-20 • email info@rechner-sensors.de • www.rechner-sensors.de

All specifications are subject to change without notice. (05/2004)

For size M30x1.5 / ∅ 30: First open plastic tab. For size > M30x1.5 / ∅ 30: First remove plastic sealing screw.