Oil-on-Water Monitor Model OF-1600
This instrument is installed 0.5m above the water level. It automatically detects oil films floating on the water surface. It is able to provide early detection of oil leakage or oil spills. Detection is based on LED light source. Some features of this instrument include:-
- Due to its reflectance based measurement principle, this analyser is capable of detecting virtually all types of oil.
- High luminance, long life LED light source.
- Electrically pulse modulated light source, immune to the effects of external light (measurement is possible even under direct sun light).
- Non-contact monitoring.
- Small, compact and light weight design for ease of installation and maintenance.
- "Undetectable" signal when reflected light is so weak that oil film cannot be detected or the light is blocked by floating matter.
- Peak hold circuit eliminates interference effects of non-oil solids floating on the water surface as they pass across the monitored surface (e.g. domestic refuse). If solids become trapped on the monitored surface, the instrument will generate an "undetectable" alarm.
- In addition to oil film detection signal, an output is available for connection to a recorder to record oil-film generation.
Principle of Operation
The reflectance of an oil film is greater than that of water (when an oil film is present on water, it has a "glistening" effect). From this property the presence of oil can be detected by applying a light beam of constant intensity to the water surface and then measuring the intensity of the reflected light. 
Pulse modulated light from an LED is passed through a collimate lens and falls onto the water surface to be monitored. The reflected light from the water surface is measured by the light receiver via a condenser lens. The light receiver converts the light to an electric signal which is amplified before passing through a narrow band pass filter which removes the effects of external light interferences. Only the signal component passes to the peak hold circuit where the peak value of reflected light is held for a fixed period. When the peak value exceeds a preset value, the oil on water alarm is activated and a contact switching output signal is generated.
When the reflected light drops for a period longer than two minutes, an "undetectable" alarm is generated. The undetectable alarm indicates instrument malfunction or the presence of floating solids on the water surface directly underneath the detector.
More Detailed Information
For more detailed information, please download our Product Brochure