6 | Technical data
FISCHER Mess- und Regeltechnik GmbH
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BA_EN_NK10_H_ST4-C
6.3 Switch contacts
1 or 2 micro-switches with 1-pin changeover contact.
WARNING
Only for connection to certified intrinsically safe circuits in the igni-
tion protection class Ex ib IIC.
Highest values per electricity circuit:
U
i
= 30 V
I
i
= 160 mA
P
i
= 800 mW
The intrinsically safe contact circuits are safely galvanically separated from
each other and the earth potential.
6.4 Measurement accuracy
Switch hysteresis
approx. 6 mm
Switching point differential between S1 and S2
(+)
max. 30 mm
Switching point differential on the
medium surface
dependent on medium
density
(+)
only for two micro-switches
6.5 Directives and certificates
Directives
Applicable standards
ATEX Guideline 2014/34/EU
DIN EN 60079-0:2013-04
DIN EN 60079-11:2012-06
DIN EN 60079-31:2010-07
DIN EN 13463-1:2009-07
DIN EN 13463-5:2011-10
Pressurised Vessel Directive 2014/68/
EU
DIN EN 13445-1:2013-12
DIN 4754-3:2015-03
Low-Voltage Directive 2014/35/EU
DIN EN 61010-1:2011-07
Testing
Certificate no.
EC type testing 97/23/EC
Module B Cert. no. 07 202 1081 Z 9143/13/H
Module D Cert. no. 07/202/1081/Z/0150/D/15
EC type testing 94/9/EC
Cert. no. TÜV 07 ATEX 553595
GL type testing
Cert. no. 65 353 – 93 HH
DIN CERTCO acc. to 4754-3
Cert. no. 10F001
6.6 Construction design
Swimmer system
Stainless steel 1.4571
Metal bellows
Stainless steel 1.4571
Flange / counter-flange
(*)
Stainless steel 1.0425 (P265GH) or 1.4571
Welding socket
St.35.8 [1.0345 (P235GH)]
Screws / nuts
(x)
G 7258 / C35PbK
(*)
Please note the material information in the dimensional drawings.
(x)
Only for version with welding connection
