5
Directives and Standards
VdTÜV Bulletin “Wasserstand 100” (= Water Level 100)
The level switch NRS 1-53 in conjunction with level electrodes NRG 10-52, NRG 16-52,
NRG 16-4 and ER 5.-1 is type approved to VdTÜV Bulletin “Water Level 100”.
The VdTÜV Bulletin “Wasserstand (= Water Level) 100” specifies the requirements made on water level
control and limiting equipment for boilers.
ATEX (Atmosphère Explosible)
According to the European Directive 2014/34/EU the equipment must
not
be used in explosion risk areas.
Note
The level electrodes NRG 10-52, NRG 16-52, NRG 16-4 and ER 5.-1 are simple items of
electrical equipment as specified in EN 60079-11 section 5.7. According to the European
Directive 2014/34/EU the equipment must be equipped with approved Zener barriers if used
in potentially explosive areas.
Applicable in Ex zones 1, 2 (1999/92/EC).
The equipment does not bear an Ex marking.
LV (Low Voltage) Directive and EMC (Electromagnetic Compatibility)
The equipment meets the requirements of the Low Voltage Directive 2014/35/EU and the EMC Direc-
tive 2014/30/EU.
Note on the Declaration of Conformity / Declaration by the Manufacturer
For details on the conformity of our equipment according to the European Directives see our Declara-
tion of Conformity or our Declaration of Manufacturer.
The current Declaration of Conformity / Declaration of Manufacturer are available in the Internet under
www.gestra.com/documents or can be requested from us.
