4
Important Notes
Danger
The terminal strips of the NRS 12 are live during operation.
This presents the danger of electric shock!
Cut off power supply before attaching or detaching the housing lid and the terminal strips
of the equipment.
Usage for the intended purpose
Use level switch NRS 12 only in conjunction with GESTRA level electrodes NRG 164, NRG 1...52,
ER 50 and ER 56.
Safety note
The equipment must only be installed and commissioned by qualified and adequately trained per
sonnel.
Maintenance and retrofitting must only be performed by entrusted personnel who – through adequate
training – have achieved a recognised level of competence.
LV (Low Voltage) Directive and EMC (Electromagnetic Compatibility)
The equipment meets the requirements of the Low Voltage Directive 2006/95/EC and the EMC Directive
2004/108/EC.
ATEX (Atmosphere Explosible)
According to the European Directive 94/9/EC the equipment must
not
be used in potentially explosive
areas.
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 Declaration
of Conformity or our Declaration of Manufacturer.
The current Declaration of Conformity / Declaration of Manufacturer are available in the Internet under
www.gestra.de/documents or can be requested from us.
Note
The level electrodes NRG 164, NRG 1...52, ER 50 and ER 56 are simple items of
electrical equipment as defined in EN 6007911 section 5.7. According to the European
Directive 94/9/EC 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. The suitability of the Zener barriers is certified in a sepa
rate document.
