METPOINT® OCV compact
Continuous oil vapour measurement for your process reliability
In many areas of compressed air treatment there is a risk of oil contamination. Such impurities can endanger production plants, the environment and even health. By using monitoring systems such as the METPOINT OCV compact, which monitor the residual oil vapour content in the compressed air permanently, precisely and in compliance with standards, you can reliably assure the quality of your compressed air and increase process reliability.
Measuring range
< 0.01 to 2.5 mg/m³
Detection limit
0.001 mg/m³
Operating pressure
3 to 16 bar (g)
Protection class
IP54
Why is precise oil vapour measurement so important?
Assuring air quality and product purity
- Ensuring product safety: protection against contamination in sensitive industries
- Complying reliably with standards: achieving the purity class according to ISO 8573-1 for oil-free compressed air
- Assuring quality in the long term: fewer product defects and less scrap
- Protecting plants and processes: no oil vapour deposits in pipes, machines and production areas
Reliability for plants and processes
- Longer component service life: oil vapours attack filters, rollers and sensors. Real-time measurement helps to prevent premature wear.
- Lower costs: detecting impurities early saves on maintenance and repairs.
- Fewer breakdowns: lower risk of production stoppages and machine failures
Confidence in compliance and certification
- Meeting regulations: fulfilling legal requirements and industry-specific purity standards, avoiding sanctions and facilitating certifications
- Building trust: documented evidence creates transparency towards customers and authorities
- Staying competitive: with permanently proven compressed air purity
How oil vapour measurement works
Reliable oil vapour measurement is made possible by the advanced technology in the METPOINT OCV compact system. The system’s sensor uses the principle of photoionisation with a so-called PID sensor. To ensure precise measurement, the values determined are temperature- and pressure-compensated, which meets the requirements of ISO 8573. An integrated catalytic converter generates the reference gas itself and ensures reproducible results.
Permanent and precise monitoring of the oil vapour content in compressed air
The METPOINT OCV compact was developed specifically for detecting vaporous and gaseous hydrocarbons in compressed air applications. It enables the continuous detection of residual oil vapour contents down to thousandths of a mg/m³, even during operation.
Thanks to short measuring intervals, even the smallest deviations are detected quickly and reliably. This online monitoring ensures the safety and quality of your compressed air at all times and at every quality-critical point of your installation. The recorded measurement data serves not only to document the compressed air quality but also to identify potential sources of contamination, which is crucial for ensuring your process reliability.
- Measuring and display unit in a robust housing with industrial design
- Protection class IP54 / DIN EN 60529
- Measuring range: < 0.01 – 2.500 mg/m³
- Reading display updated every 4 seconds
- Interfaces: 4–20 mA, RS485/Modbus (measured value only)
- 7-segment display with 5 buttons for setting configuration and alarm
- Visual indication of the operating status: LEDs (red/green each) for purifier, PID and oil class
- Protection of the measuring cell against excessive oil content via a valve circuit
Benefits of the METPOINT® OCV compact
Safe
- Reproducible accuracy of readings thanks to reference gas generation
- Automatic monitoring of the reference gas and sensor electronics
- Output and forwarding of alarm messages
Reliable
- Pressure range of 3 … 16 bar
- Online monitoring of the oil vapour content
- Standard data transmission to display and control room using common communication types
Simple
- Clear visualisation of all readings
- Flexible installation
- Robust industrial housing
Technical data METPOINT® OCV compact
| Measured medium | Compressed air, free of aggressive, corrosive, caustic, toxic, flammable and oxidising components. Compressed air treatment suited to the measuring task is required. |
|---|---|
| Measured variable | Residual oil content in mg oil/standard m³ referenced to 1.0 bar abs., +20 °C, 0 % relative humidity, according to ISO 8573-1 |
| Detectable substances | Polyalphaolefins, aromatic and aliphatic hydrocarbons, functional hydrocarbons |
| Detection limit (residual oil) | 0.001 mg/m³ |
| Sample gas humidity | ≤ 40 % rel. humidity, pressure dew point max. +10 °C, non-condensing humidity |
| Compressed air temperature min./max. | +5 °C … +50 °C |
| Operating overpressure | 3 … 16 bar (g), optional upstream pressure reducer for up to 300 bar (g) |
* Further technical data can be found in the product information in the download section below…
Simple and safe operation
The METPOINT OCV compact was developed specifically for detecting vaporous and gaseous hydrocarbons in compressed air applications. It enables the continuous detection of residual oil vapour contents down to thousandths of a mg/m³, even during operation.
Thanks to short measuring intervals, even the smallest deviations are detected quickly and reliably. This online monitoring ensures the safety and quality of your compressed air at all times and at every quality-critical point of your installation. The recorded measurement data serves not only to document the compressed air quality but also to identify potential sources of contamination, which is crucial for ensuring your process reliability.
Calibration service for METPOINT® OCV compact
Monitoring systems are often exposed to mechanical stress and temperature fluctuations, which can reduce the measuring accuracy of the sensors. This effect, known as “drift”, can distort the measurement results and thereby impair production and product quality. BEKO TECHNOLOGIES offers a comprehensive range of calibration services for flow sensors, pressure dew point transmitters, pressure transmitters and analysers.
These calibrations are carried out according to a procedure specified by BEKO TECHNOLOGIES and correspond to the standard of ISO calibration. ISO calibrations are comparative measurements in which external test items are compared with internal reference instruments. These reference instruments are traceable to national standards, and all procedures meet the requirements of the DIN EN ISO 9001 quality standard.
Frequently asked questions
What do I use the METPOINT OCV compact for?
It permanently monitors the residual oil vapour content in the compressed air. This lets you detect oil contamination early and assure the quality of your compressed air.
How does the oil vapour measurement work?
The sensor works on the principle of photoionisation (PID). The values are temperature- and pressure-compensated, and an integrated catalytic converter generates the reference gas itself.
How fine is the device’s measurement?
The measuring range is from < 0.01 to 2.5 mg/m³, and the detection limit is 0.001 mg/m³. The display is updated every 4 seconds.
Which substances does the METPOINT OCV compact detect?
Polyalphaolefins, aromatic and aliphatic hydrocarbons as well as functional hydrocarbons.
At what pressure can I measure?
At 3 to 16 bar gauge. With an optional pressure reducer, the device can also be used on lines up to 300 bar.
What requirements apply to the compressed air at the measuring point?
The compressed air must be free of aggressive, corrosive, toxic and flammable components. Humidity must not exceed 40 %, the pressure dew point must be no higher than +10 °C, and the temperature must be between +5 and +50 °C.
How do I pass on readings and alarms?
Via 4–20 mA and RS485/Modbus. Alarm messages are output and forwarded, and LEDs show the status of the purifier, PID and oil class.
How does the device protect the measuring cell?
A valve circuit protects the measuring cell against excessive oil content.
Does the METPOINT OCV compact need to be calibrated?
Yes, because stress and temperature fluctuations can shift the measuring accuracy. BEKO TECHNOLOGIES calibrates according to a procedure that corresponds to an ISO calibration.
Who advises me on planning oil vapour monitoring?
We can. We advise you on choosing the right measurement technology for your application. Call us or write to us.
The right measurement technology for your application?
Let us advise you to find the best measurement technology for your needs and application.
