BAS-SMART OW7 is a new generation of immersion sensors for measurement of oil or hydrocarbons in water based on the UV fluorescence principle. When excited by a light beam at a specific wavelenght, some compounds re-emit light at a longer wavelength. Since there are very.
limited number of chemicals such as PAH that have fluorescence signatures, this method gives a highly selective measurement with much higher sensitivity than the conventionally used infrared based technology. This makes it possible to determine even the slightest traces of PAH's.
UV fluorescence is a sensitive method of detecting aromatic hydrocarbon compounds in water. Fluorescence is generally defined as a phenomenon in which a part of the radiation absorbed by a compound of interest at a certain wavelength is radiated out at a longer wavelength. Certain compounds, including aromatic hydrocarbons, absorb energy when the water is excited by light of a specific wavelength usually in the UV range. This absorbed light energy is radiated out again at a higher wavelength and the amount of this radiated energy is proportional to the concentration of the light absorbing compound. Each compound has a specific wavelength range for absorbing and re-emitting this radiation. This allows specificity for the compound in question to be detected by measuring the fluorescent light at prescribed wavelengths.
In addition to PAHS, the BAS-SMART OW7 is also recommended for detection of monocyclic aromatic hydrocarbons (e.g., benzene, toluene, xylene; also referred to as BTX). As with all BAS-SMART sensors, the BAS-SMART OW7 sensor is delivered pre-calibrated, so that the sensor is ready to be used.
|Measuring Principle||Light Source: Xenon flash lamp + filter(254nm) Detector: Photo diode + filter (360nm)|
|Measuring Range||0 to 50 ppb, 500 ppb, 0 to 5 ppm, 50 ppm, 150 ppm|
|Response Time||T90 < 10s|
|Operate Pressure||3 bar, 1 bar in Flow cell 2 to 4 L/min|
|Operate Temp.||32 to 104 "F (0 to 40 "C)|
|Power||24 VDC, Max. 30W|
|Interface||RS485 Modbus RTU|
|Output||4 to 20 mA|
|Housing||Material: 316L, titanium is optional;>IP68 Submersible|
|Dimension||Dia. 2" (50.8 mm), Length 9" (229 mm)|
|Weight||6 lbs (2.8 kg) with 30" Cable|
|CE Marking||EN 61326-1:2013 Electromagnetic Compatibility EMC|
Standard warranty is 12 months from the date of commissioning & limited to maximum of 15 months from the date of shipment of the analyzer system
|-1: 0-500 ppb|
|-2: 0-150 ppm|
|-3. Custom range (Maximum 150 ppm)|
|-C10: 10 ft. Cable|
|-C20: 20 ft. Cable|
|-C30: 30 ft. Cable|
|Please contact factory for other cable length|