Oil Vapour Monitors

Oil Check Pro

The Oil Check Pro continuously monitors residual oil vapour in compressed air, ensuring high air quality and process safety. With auto calibration, on-site verification, and long-term stability, it provides accurate, real-time measurements for both stationary and mobile applications.

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Continuous Precision

Accurate & stable measurement

The Oil Check Pro ensures highly precise, real-time monitoring of residual oil vapour in compressed air, with auto calibration for long-term accuracy.

Easy Maintenance

Service-friendly & no downtime

The sensor unit can be replaced on-site, and calibration is quick and simple using test gas cylinders, keeping operations running smoothly.

Versatile Applications

Stationary & mobile solutions

Available as a fixed installation for continuous monitoring or as a portable device for on-the-go spot-checks, adapting to different needs.

Oil Check Pro Oil Vapour Monitor

Maintaining oil-free compressed air is essential for industries where air purity and product quality are critical. The Oil Check Pro is a high-precision monitoring system that measures residual oil vapour levels in real time, ensuring compliance with strict air quality standards.
 

With automatic calibration and self-monitoring functions, the sensor delivers long-term stability and consistent accuracy. Users can also perform on-site calibration using test gas cylinders, eliminating the need for downtime. Designed for both stationary and mobile applications, the Oil Check Pro offers a flexible and service-friendly solution for continuous oil vapour monitoring.
 

Whether used for process safety, compliance monitoring, or mobile spot-checks, the Oil Check Pro provides the data and reliability needed to maintain clean, high-quality compressed air.

Oil Check Pro oil vapour monitor combined front view

Protecting air quality with oil vapour monitoring

Even trace amounts of oil vapour in compressed air can lead to contaminated products, equipment damage, and non-compliance with industry standards. In sensitive applications such as pharmaceuticals, food production, and electronics, maintaining clean, oil-free air is essential to ensuring product quality and process safety. The Oil Check Pro provides continuous, high-precision monitoring of residual oil vapour levels, helping businesses detect contamination early and take corrective action. With automatic calibration and long-term stability, it delivers a reliable and hassle-free solution for maintaining high air purity and operational efficiency.

Discover the key features of the Oil Check Pro

The Oil Check Pro delivers precise, real-time monitoring of residual oil vapour in compressed air, ensuring long-term stability and accuracy. It features automatic calibration for consistent results and allows on-site verification using test gas cylinders, eliminating downtime. With built-in process safety functions, it continuously monitors its own performance for reliable operation. Available in both stationary and mobile versions, it provides flexible monitoring solutions for various industrial applications.

Reliable tools to track performance, improve efficiency, and reduce costs

Protecting your compressed air system while ensuring precise performance has never been easier. High-quality measurement equipment provides accurate monitoring of critical parameters, helping you optimise efficiency, maintain reliability, and prevent costly issues. Engineered for durability and seamless integration, these solutions empower you to make informed decisions and keep your operations running at peak performance. Contact us today to explore how upgrading your measurement equipment can enhance your system's capabilities and operational success.

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General specifications

Technical specifications Oil Check Pro

Measured medium

Compressed air, nitrogen, (free from aggressive, corrosive, acid, toxic, flammable and oxidising components). 
Further gases on request

Measuring unit

Residual oil content in mg oil/norm m³ relative to 1.0 bar [abs], +20 °C, 0% relative humidity, in accordance with ISO 8573-1

Identifiable substances

Hydrocarbons, functional hydrocarbons, aromatic hydrocarbons

Field of application

After activated carbon filter, after activated carbon adsorber, after oil-free compressor, always with connected upstream filtration and dryer

Ambient temperature

+20 °C… +45 °C, rel. humidity <= 75% without condensation

Compressed air temperature

+20 °C… +50 °C

Operational overpressure

3…9 bar [ü] optional pressure reducer connected upstream for up to 300 bar

Humidity of measured gas

<= 40% rel. humidity, pressure dew point max. +10 °C, non-condensable humidity

Compressed air connection

G 1/4" female thread according to ISO 228-1

Measured values

mg/norm m³, pressure and temperature compensated residual oil vapour content

Measuring range

0.001 … 5 mg/m³ (higher measuring ranges on request)

Detection limit (residual oil)

0.001 mg/m³

Flow of measuring gas

approx. 0.5 norm litres/minute, relative to 1.0 bar [abs] and + 20 °C, (atmospheric conditions)

Plug-in power supply

100…240 VAC / 1 Ph. / PE / 50…60 Hz / ± 10%

Outputs

Digital output: RS 485 interface (Modbus RTU), Ethernet via DS 400 / 500
Analogue output: 4 ... 20 mA (electrically isolated)
Optional: 2x 4 ... 20 mA analogue output (electrically isolated), 2 alarm relays for external alarm unit, alarm values freely adjustable

Operating hours counter

integrated

Dimensions (mm)

200 x 130 x 120 (W x H x D)

Weight (kg)

approx. 7 kg

  • Forced pressure variation for long-term stable measurement results – Auto calibration  
  • Service friendly – no downtime – sensor unit can be replaced by user onsite
  • Process safety – all functions are monitored internally.  
  • Onsite calibration – calibration can be carried out in the field using test gas cylinders.  
  • Ideal for mobile measurement – easy sampling and quickly ready for measurement

Get in touch

Have questions about our measurement equipment or want to learn how it can elevate your operations? Contact us today! Our team is here to provide expert advice and guide you in optimising your processes with our accurate and dependable solutions. Let’s ensure precision and take your system’s performance to the next level!

Contact our measurement equipment experts