Certification Of Sensors (Namur) According To Atex - Rechner Sensors IAS-30 Instruction Manual

Information for sensors IAS-30... and KAS-40... with ATEX certification category 1G
and for sensors IAS-30... and KAS-40... StEx suffix for Dust-Explosion areas, category 1D:
Description:
The capacitive or inductive sensor is designed for use in areas where there is a danger of explosion due
to the presence of inflammable gases. They can be used for example for level control of bulk material in
silos or containers or as a limit switch, appliance group II Category 1G.
The capacitive or inductive sensor IAS-30...StEx / KAS-40...StEx is also designed for use in explosion-
danger areas, caused by combustible dusts, appliance group III Category 1D.
The sensors with intrinsically safe output signals (KAS-40... and IAS-30-...), have to be operated by an
intrinsically safe switching equipment (e.g. Series N-132...).
The sensor has a visible LED, which displays the operating state. The sensitivity adjustment of the capaci-
tive sensor KAS-40... with body sizes from 11 mm in Ø is made by means of a potentiometer accessible
from outside. The sensor reacts to the proximity of the filling material or objects to be detected in the active
area and changes its output signal.
Thermal and electrical data:
Appliance group II category 1G Permitted ambient temperature:
Temperature class
Permitted ambient temperature max. 40 °C
Group III category 1D Permitted ambient temperature:
Voltage U /Ui
B
Current value Ii
Power Pi
Internal capacitance Ci
Internal inductance Li KAS-40
Internal inductance Li IAS-30
Degree of protection: IP 67
Marking: Group II category 1G Ex ia IIC T1-T6 Ga,
Group II category 1D Ex ia IIIC T101 Da
Following norms have been used:
EN 60079-0:2012+A11:2013, EN 60079-11:2012, EN 60079-26:2007
Potential compensation:
Devices with a plastic body ≥ 30 mm, cable, plastic parts and devices with a metal body must be protected
against the potentially dangerous build-up of electrostatic charges. This can be achieved by ensuring that
the metal body of the sensor is electrically grounded. Alternatively, with cable connection sensor devices,
the green/yellow earth wire should be connected to a system ground. The green/yellow lead is electrically
connected to the metal body of the sensor. The same is valid for the correspondent pin for sensors with
a connector.
When the IAS-30... / KAS-40... that is connected to an intrinsically safe device is completely installed in
zone 0 / zone 20, then the cable has to be lead tightly through a cable-gland into zone 0 / zone 20 or zone
1 / zone 21 and should be protected against static charges by means of a metal screen or metal tube that
should be included in the potential compensation
Please note: The conditions of the EN 50281-1-2 e.g. relating to dust-coating and temperatures must be met.
T6 T5 T4
80 °C
Electrical data for sensors
NAMUR 1 - 4 mA:
5 - 15 V DC 15 V DC
30 mA
100 mW
250 nF
0,2 mH
2 mH
T3 T2 T1
100 °C
-20...+90 °C
Electrical data for sensors with ana-
logue output 4 - 20 mA / 20 - 4 mA
15 - 27 V DC 27 V DC
88 mA
576 mW
89 nF
0,2 mH
11