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Summary of Contents for Bamo NivOil
- Page 1 Instructions manual ® NivOil / 12 V DC Alarm system for oil-water separators 531 M1 02 A 16-07-2010...
- Page 2 A LED indicates the sensor type on the diagram on the front board. When an input is not wired, the LED is off. The alarm unit NivOil has a built-in buzzer; it is possible to disable its function by a DIP switch configuration.The alarm unit NivOil CU/12 works with a 10 to 27 V DC power supply has a low energy consumption.
- Page 3 SENSORS MOUNTING The alarm device NivOil must be mounted out of the Ex area. Cables from safe area and Ex area must pass through pressure glands or wall-ducts IP67 protection according to the standard EN 60529. Hydrocarbon fluid layer thickness sensor: Fit the sensor such as the sensor tip corresponds to the bottom of the greater layer thickness to detect.
- Page 4 LED for status DIP switch “Low battery” LED relays status Selector (< 10 V DC) LED for status of sensors Sensors inputs E1 - E2 - E3 Intrinsic safety circuits Power input Relays S1 - S2 - S3 10...27 V DC Do not connect yet the main power DIP switch setting Function ON...
- Page 5 The shield must not be connected. Both ends must be pressed to the limit and pressure cable glands well tightened. 3°) Connect the sensors to the control unit NivOil in accordance with the obligations due to Ex area, as shown on the drawing.
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Page 6: Start-Up - Tests
When the TEST mode is activated, an audible signal occurs if everything is correct. The factory settings are: "without sensors" When you connect a new sensor on a free channel, the alarm device NivOil will identify and memorize it as soon as you switch on the power. - Page 7 ALARM SYNOPTIC DIAGRAMS For hydrocarbon fluid layer thickness and overfilling sensors (DIP3 = OFF) Note: To avoid false alarms a 10 seconds delay is factory set up. 531 M1 02 A 16-07-2010...
- Page 8 Repeat alarm function: The alarm repeat function is disabled or activated with the DIP switch 2. When DIP 2 is in position "ON" the alarm will repeat again 24 hours after the first event, if the alarm event is not corrected. For sludge probe (DIP3 = OFF) The test could be completed with the probe outside the separator and totaly immersed in water.
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Page 9: Alarm Signals
ALARM SIGNALS When the unit starts up (and after the self diagnostic) Defect Signal e All the green LED are blinking e Audible alarm is ON Short circuit in the measuring loop e Relays are OFF e All the LED are shut OFF e Audible alarm is shut OFF Measuring loop cable is broken e Relays are OFF... - Page 10 Caution Disconnect from the main power Before opening the cabinet 531 M1 02 A 16-07-2010...
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Page 11: Technical Features
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. An alarm signal occurs in case of dysfunction due to a short circuit or a broken cable. - Page 12 NivOil-OP/10 – Hydrocarbon fluid layer thickness sensor (Only for use with an alarm device NivOil) Sensor type: Capacitive, high frequency Wetted parts: Antistatic PE stem; Stainless steel end probe Cable: Elastomer resistant to oils and hydrocarbon fluids, blue colour; wires 2x1mm , connections to the alarm device NivOil on screw connectors;...