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Residual oil monitoring system reduces liklihood of production stops

Compressed air contaminated by oil is the horror of every compressed-air user. Depending on the application, there is a risk for the production plant, the environment, or even for health.

In the majority of cases, some residual oil content cannot be totally avoided, but it still needs to be monitored to ensure recommended levels are not exceeded. The compressed air classes defined in ISO 8753-1 offer a standard for the assessment of compressed-air quality.

However, it is important for the user to be informed about the concentration level at all times. Sampling and laboratory evaluation are complex, expensive and represent nothing but a snapshot of a past moment in time. The Beko Instruments monitoring system Oil Control allows permanent oil-content monitoring of flowing compressed air. Measurement is carried out by means of an ion-exchange method, using a probe inserted into the flow on a special calibration section of pipe.

The sensitivity of the sensor guarantees immediate detection of increasing oil content, resulting, for example, from defective filters. The user is notified via a potential free signal that can be linked to an existing alarm system if required. This helps to successfully avoid consequential damage to machines, products or health. Therefore, compressed air as a production medium gains in reliability, with users avoiding unnecessary expenses, as the purchasing cost of an Oil Control monitoring system is significantly lower than the cost of a production stop.

There are three versions of the Oil Control system available: the Oil Control OCC for compressor monitoring up to 100 mg/m3; Oil Control OCF for the monitoring subsequent to compressed-air processing from 20 mg/Nm3 to 0.01 mg/Nm3; and Oil Control OCA for the monitoring of activated-carbon filters and catalytic converters from 1.0 mg/Nm3 to 0.001 mg/Nm3. The scope of delivery includes a probe, a measuring cell and evaluation electronics, as well as a calibrated pipe section.

In addition, data logger and software can be purchased separately. Oil Control corresponds to ISO 8573. It operates reliably in a temperature range between 0 and +60 °C, independent of varying flow conditions and unaffected by humidity. The allowable operating overpressure lies at 10 bar (as standard), 16 and 45 bar are also optionally possible.

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