Oil Leak Detection Sensor Brochure

The sensor has been designed to detect the presents of oil or any non-conductive liquidincluding fuel oil, diesel etc. and energise an internal relay to provide a signal to existingalarm systems, Building Management Systems or SMS messaging systems.The sensor as standard includes a Stainless Steel floor mounting bracket and on requestcan be fitted with a wall mounted bracket.The Sensor includes two liquid detectors one looking for conductive liquids (water) withthe other looking for non-conductive liquids (fuel oil etc. ) using an optical sensor. Themode of operation for the optical sensor is the principle of total internal reflection. AnLED and photo-transistor are housed in a plastic (Polysulfone) dome. When no liquid ispresent, light from the LED is internally reflected from the dome to the photo-transistor.When a liquid covers the dome, the effective refractive index at the dome-oil boundarychanges allowing some light from the LED to escape. Thus the amount of light received bythe photo-transistor is reduced indicating the presents of a liquid. The conductive sensorlooks for water by using bi-directional DC in both sensors to stop electrolysis of the elec-trodes.Sensors can be connected together to give a common alarm within an area or connectedOil Leak Detection Sensor for outside useType OSPWCMR Electrical LtdBolton HouseFive Chimneys LaneHadlow DownEast SussexTN22 4DXTel: 01825 733600CMR Electrical Ltd Manufactures of Electrical & Electronic EquipmentContinual development may result in products and specifications being changed without prior noticeSpecificationHousing typeSize excluding bracketColourInput powerPower ConsumptionConnections to SensorRelay contactIngress Protection RatingABS Plastic75mm High x 38mm diameterWhite12 to 24 VAC or 12 to 24VDC30mA @ 24VDC3 metre long 4 core signal cableNormally Open , (close in alarm ) 1 amp 30VDC volt free contactIP65CMRElectrical LtdSpecialized Electronic Equipment ManufacturesStainless Steel Fixing BracketPVC HousingOptical Sensor21.5 mm thread3m long signal cableInternal wiringOptical SensorRedGreenBlueRedBlackYellowBlue+12-24 VDC, 12-24VAC0VDC, 0VAC3 metre long signal cabelNoteIf the sensor is detecting an oil leak before water is detected, the output relay will remain ON. However,if water is detected before an oil leak the relay will remain OFF (see note 2) until the water hasevaporated when the relay will turn ON if oil is still present.Note 2The sensor will also detect oil in water providing enough oil is present to force the water away from theoptical sensor.Water Detected Oil Leak Detected Relay output ContactNO NO Open (no alarm)NO YES Closed (alarm)YES NO Open (no alarm)Water detected first Then an oil leak Open (see note 2)Water detected second Oil Leak detected first Closed (see note)Output alarm relay truth table