FISCHER DE49 A Series, Operating Manual

Page: 23 / 36

FISCHER Mess- und Regeltechnik GmbH Technical data | 6
BA_EN_DE49_A 23/36
6.6 Auxiliary energy
The unit power supply may only be an inherently safe power circuit of the igni-
tion protection type 'Ex ia IIC'.
Rated Voltage 24v DC
Admissible operating
voltage 12 … 30 V
Current limitation ≤ 22.5 mA (can be programmed)
Supply and signal power circuit limit values
(Ignition protection type intrinsic safety Ex ia IIC)
U
i
≤ 30 V
I
i
≤ 100 mA
P
i
≤ 750 mW
inner effective capacity C
i
2.5 nF
effective inner inductivity L
i
negligible
NOTICE! In contrast to the EMV-GND, the power connections have an in-
ner capacity of max. 5 nF.
6.7 Application conditions
Increase ambient temper-
ature -10 … +60 °C
Media temperature -10 … +60 °C
Storage temperature -20 … +70 °C
Enclosure protection class IP65 as per EN 60529
EMC EN 61326-1:2013
EN 61326-2-3:2013
RoHS EN 50581:2012
ATEX EN 60079-0:2012 + A11:2013
EN 60079-11:2012
EN 60079-26:2015
ATEX classification
Type testing IBExU09ATEX1164
Zone 1 and 2
II 1/2G Ex ia IIC T4 Ga/Gb
Zone 21 and 22
II 2D Ex ia IIIC T80°C Db
6.8 Construction design
Process connection
Aluminium hose screw connection for 6/4 or 8/6 mm hose
Cutting ring screw connection in brass for 6 or 8 mm pipe
Materials
Housing Polyamide (PA) 6.6 , electrically conductive
Media-contacting
material Stainless steel 1.4404, 1.4571, aluminium
Assembly
Wall structure