Oil Leak Detector NAR 300 system
6 Endress+Hauser
1 Safety instructions
1.1 Designated use
The Oil Leak Detector NAR 300 System uses two types of detection principles: conductivity and
tuning-fork.
This system is set up in a pit, dike or plant, the sump pit near the pump yard, where it provides the
ultimate leak ditection function for oils and vegetable oil.
Explosion-proof system:
With the Transmitter NRR 261 (outside setting) use, connect to the switch input mechanism such
as a existing Level Gauge, Transmitter directly and can send the alarm.
IS system:
Using in combination the Converter NRR 262 (inside setting) and the Sensor I/F Ex box (outside
setting), can establish the alarm system.
1.2 Installation, commissioning and operation
• Mounting, electrical installation, start-up and maintenance of the instrument may only be carried
out by trained personnel authorized by the operator of the facility.
• Personnel must absolutely and without fail read and understand this Operating Manual before
carrying out its instructions.
• The instrument may only be operated by personnel who are authorized and trained by the oper-
ator of the facility. All instructions in this manual are to be observed without fail.
• The installer must make sure that the measuring system is correctly wired according to the wiring
diagrams. The measuring system is to be grounded.
• Please observe all provisions valid for your country and pertaining to the opening and repairing of
electrical devices.
1.3 Note for Handing
Power cable
• Use cables recommended by Endress+Hauser.
• Be sure to ground the cables. For details, refer to "Electrical Connections" and "Installation"
Grounding
• Do not remove a ground terminal or wire power is on.
• For details, refer to "Electrical Connections"
External connection
If external connections are required, before connecting the device to an external control circuit,
provide
protective grounding
Caution!
Changes or modifications not expressly approved by the party responsible for compliance could void
the user’s authority to operate the equipment.
1 Safety instruction
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