NAR300 system for high temperature
Product description
Hauser
9
3
Product description
3.1
Product design
The NAR300 system is configured mainly in combination with the following products.
1.
2.
3.
4.
A0048024
1
NAR300 product design
1
Float sensor NAR300
2
Ex d [ia] transmitter NRR261
3
Ex [ia] transmitter NRR262
4
Ex [ia] sensor I/F Ex box
The NAR300 system is installed in an oil-retaining wall in a tank or in a sump pit near a
plant or a pump yard, and it provides the ultimate leak detection function for oils, such as
petrochemicals and vegetable oils. A sensor with a conductive detection function is used to
monitor the detection conditions. A two-stage alarm logic allows for an extremely low
false-positive alert, ensuring the safety of the tank yard with a precise and simple device
configuration.
3.2
Technical data
3.2.1
Float sensor NAR300
Item
Description
Protection class
IP67 (outdoor installation)
Power supply
Supplied by a sensor I/F Ex box or NRR261 (NAR300 sensor I/F Ex box,
integrated type)
Wetted material
Float: SUS316L, conductive sensor: SUS316 and PTFE
Detection sensitivity
Water-filled pit: 10 ± 1 mm (0.04 in) with kerosene at the time of shipment
from the factory
I/O cable
Dedicated shielded cable (PVC) as well as with cable float
(Standard 6 m (19.69 ft))
Weight
Approx. 2.5 kg (5.5 lb) (including the dedicated shielded cable (PVC)
6 m (19.69 ft))
1)
Adjusted with oil (kerosene: approx. density: 0.8), lower-layer water (water: approx. density: 1.0), static
level condition and/or without surface tension.
