Rechner Sensors IAS Serie Manual De Instrucciones página 7

Information for inductive and capacitive sensors with transistor output of the series
IAS-10(20)...and KAS-70(80)... StEx suffix for Dust-Explosion areas.
Description:
The capacitive or inductive sensor is for use in areas where is a danger of explosion, caused by com-
bustible dusts. The capacitive sensor (KAS-...StEx) for instance is used for level control of bulk materials
in silos and containers appliance group II category 1/2D.
The inductive sensor (IAS-...StEx) for instance is used as a limit switch, appliance group II category 1/2D.
Futhermore it is designed for use in areas where there is a danger of explosion due to the presence of
inflammable gases, appliance group II category 2G.
The sensor (IAS-...StEx of KAS-...StEx) should be installed into the container in such a way, that only the
front part of the casing (active surface) projects into the container and is thus in zone 20. The other part
of the sensor (cable exit, LED's, potentiometer), is outside of the container in zone 21, 22 or completely
outside the endangered area.
The power supply units generally have to be mounted outside the endangered areas. The sensor has
an LED visible from outside, which displays the operating state.
For KAS only: The sensitivity adjustment is made by means of a potentiometer accessible from outside.
Function KAS: When the material to be detected in the active area approaches, the sensor will be
activated and its output signal will change.
Function IAS: The sensor reacts to the proximity of the metal objects to be detected in the active area
and changes its output signal.
Thermal and electrical data:
Appliance-group II category 1/2D Ex ta/tb IIIC T101°C Da/Db
Permitted ambient temperature:
Appliance group II category 2G Ex mb IIC T4 Gb
Electrical data:
Operating voltage:
Operating current value:
Degree of protection
Potential compensation:
Sensors with a metal housing have a cable connection with a protective conductor (yellow-green). This
is an internal galvanic connection to the metal housing. The protective wire must be connected.
All cables and plastic parts must be protected against the effects of electrostatic charge.
Please note: The conditions of the EN 60079-26:2007 e. g. relating to dust-coating and temperatures
must be met.
The sensor must not be powered when making the initial connection! Wrong connec-
tion can destroy the sensor!
+ = Brown
Output 1 = Black
The sensor has an internal high-speed fuse of 200 mA. It is not possible to replace the
fuse. An external back-up high-speed fuse of 100 mA can be connected for protection
of the sensor.
-20...+ 90 °C
10... 30 V DC
up to 200 mA
IP 67
- = Blue Green/yellow =
Output 2 = White
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