Designed for the monitoring of hydrocarbon fluids separators, the alarm device NIVOIL may be connected to 1, 2 or 3 sensors.
- Hydrocarbon layer thickness sensor to detect when the maximum thickness is reached.
- Overfill sensor to detect when the fluids are on the highest level.
- Sludge layer sensor for alarming when maintenance is necessary.
The 3 sensors may be connected to any input of the alarm device NIVOIL. Any combination of the sensors can be wired. The instrument recognizes automatically the level sensor type. A LED indicates the sensor type on the diagram on the front board. The alarm device NIVOIL has a built-in buzzer; it is possible to disable its function.
Low power consumption
This model working with a 10 to 27 V DC power supply has low energy consumption. It is designed for the use of a solar powered battery or any standard electric battery (consumption is 0.1 W – 12 V DC – with 3 sensors connected with one complete control cycle per hour).
This mode is adjustable by modifying the frequency of control cycle (from 6 minutes up to 9 days). A continuous control mode could be switched on when there is no limit on consumption.
All the components are ATEX certified. The sensors are for a location in zone 0 and the alarm device corresponds to a zone 2.
- Low power consumption – 10…27 V DC power supply input
- Zone 0 ATEX certified (Zone 2 for the alarm device location)
- Solar powered or standard electric battery – Energy saving mode adjustable (control frequency adjustable from 6 min up to 9 days)
- 3 inputs, for any NIVOIL probes
- Automatic recognition of type probe
- 3 relay outputs with audible alarm
|Main power supply:||10…27 V DC|
|Power consumption:||0.1 W / 12 V DC (3 sensors connected and 1 control cycle per hour)|
|Housing protection:||IP65, according EN 60529|
|Sensor inputs:||3 inputs with automatic sensor type detection|
|for hydrocarbon fluids layer thickness, overfill level, sludge layer level|
|Monitoring:||The alarm device NIVOIL has an auto-diagnostic of measuring loop|
|a short circuit or a broken cable.|
|Display and signals:||1 function signal LED (green) on each channel|
|1 alarm signal LED (red) on each channel|
|Built-in audible alarm, disabled by DIP switch configuration|
|Front panel:||2 push buttons for diagnostic test and alarm clearance|
|Outputs:||3 relay outputs, Power switch 250 V AC as a maximum / 3A, Potential free change over contacts|
|ATEX Certificate:||BVS 10 ATEX E 011 / The alarm device may be mounted in Ex area, zone 2|
|Ex protection class:||II 3 (1) G Ex nAC [ia Ga] IIB / IIA T4 Gc (Intrinsic safety)|
|CE Marks||According to EC directives (72/23/EEC), Low Voltage Guidelines: RL 2006/95/EG & RL93/68/EWG,|
|EMV Guidelines: RL 89/336/EWG (EN 61326)|
|ATEX||RL 94/9/EG (ATEX 95)|
|EN 60079-0 (General requirements) – EN 60079-11 (Intrinsic safety) – EN 60079-26 (Group II; category 1G)|
Download Data Sheet: Alarm System for Oil-Water Separators NivOil®/ 12 V dc