oil & oil dew monitoring & control systems for compressed air installations

Continuous oil content measurement in flowing air

Having an oil free compressor does not necessarily mean that your compressed air is oil free as the term “oil-free compressor”  refers only to the compression chamber, not the compressor system as a whole, or the resulting compressed air quality.

Contaminants in the compressed air system generally can be attributed to:
  The quality of the air drawn into the compressor
  The operation of the air compressor
  Compressed air storage devices and distribution systems

Keep in mind that most of the millions of particles in normal urban ambient air your compressor sucks in, are below the pore size of the compressor inlet filters.
Hydrocarbon content in ambient air varies from area to area but is often sufficient to contaminate the compressed air of your system. Ofcourse, the answer to that, is an air treatment system downstream, but how do you know that your air quality complies with the requirements of oil free air 24hours/day 365 days/year?

Many industrial processes are very sensitive to oil contamination, as this can lead to tremendous risks, downtime, product spoilage & recall, damage the company's reputation, harmed consumers & product liability, but up to now the only method for measuring the in-pipe oil content involved specialist equipment and  a time-consuming laboratory analysis.

Using a sophisticated measurement technology based on ion exchange, the oil monitoring and control system provides the user with continuous on-line readings of the actual oil content at any given measurement point within the user’s compressed air system.

The high sensitivity of the system ensures early detection of a filter or compressor malfunction, before a serious damage to the pneumatic machines and/or the products in production.

The product has two parts: the sensor unit which includes an isokinetic probe for horizontal or vertical installation into the pipe (we can also supply a specific purpose manufactured pipe elbow that includes a sensor connection port), and a control/display unit. The display unit offers user-definable alarm limits, and as the measured oil-level increases, so the display reading changes from standard green, through to warning yellow, and finally to flashing red to indicate that the user’s alarm levels are being exceeded. The unit also connects to a building management system for remote monitoring.

The data from the unit can be recorded over a period of time, and the results then imported to commonly available software and converted into clear and concise graphical reports.

The unit is available in three versions, each designed for installation at different points in the compressed air line.

The Sigma-OCC series can measure up to 100 mg/Nm3, and is suitable for vertical  installation immediately after the compressor and cyclone seperator with level controlled drain.
The Sigma-OCF series is designed to measure the oil content immediately after a condensate-reducing coalescing filter in a vertical installation , and measures down to 0.01 mg/Nm3.
The Sigma-OCA series has the highest sensitivity and is intended for horizontal installation in the most oil-less environment, typically after an activated carbon oil-removal filter. This unit can measure down to 0.001 mg/Nm3

             Important Features

• High reliability for compressed air processes
• Round the clock monitoring, 365 days a year
• Early detection of malfunctions
• Prevents consequential damage & maintains production rate
• Easy integration into existing facilities
• Colour changing display for maximum safety