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OVERVIEW
Contamination by oil can occur at several points during the preparation of compressed air. This poses a potential risk to machinery, the environment and health. The OIL CHECK 500 compressed air monitoring system continuously analyses the compressed air, detects even the smallest residual oil values and ensures that the air quality complies with applicable standards.
Key advantages at a glance:
- Easy handling
- Shows the ISO class directly on the display
- Uniquely sensitive for gases of the recommended oil vapor standard according to ISO 8573-5
- Auto calibration through “Forced Pressure Variation” (patented)
- No downtime, sensor unit can be replaced on site
- Process reliability through monitoring of internal parameters
- Compact design
Why Choose the OIL CHECK 500?
Easy handling
The OIL CHECK 500 impresses with its particularly easy handling and user-friendly operation, which makes it quick and effortless to use. Uniquely sensitive to gases of the recommended oil vapor standard according to ISO 8573-5.
State-of-the-art sensor technology
- Innovative sensor design optimally adapted for indicative online monitoring of your compressed air quality, specified in ISO 8573-5. Suppression of technologically based, false positive alarms caused by non-standard, gaseous impurities in the sample gas, such as ethanol (C2H6O).
- No oxygen required in the test gas for operation
Auto calibration through “Forced Pressure Variation” (patented)
Using the innovative “Forced Pressure Variation” validation process, the OIL CHECK 500 generates internal compression stages in the test gas to identify gradual increases in concentration, for example due to filter saturation. This method, which is protected by CS INSTRUMENTS, can be used to compensate for ageing or contamination-related components in the measurement signal, in particular long-term drifts. No wearing parts such as activated carbon filters are required to generate zero air. The result is low maintenance and long-term stable measuring.
No downtime, sensor unit can be replaced on site
The sensor unit can be replaced by the customer on site. This eliminates the need to return the entire device for recalibration.
Process reliability through monitoring of internal parameters
All functions / components are monitored internally. A complete function test report can be printed out using the service software.
Compact design
Compact measuring devices, easy handling and reduced logistics costs.
Applications
The OIL CHECK 500 is ideal for continuous monitoring of residual oil content in compressed air and other gases across various industries:
- Oil-free compressors
- Pharmaceutical industry
- Food and beverage industry
- Cosmetics industry
- Semiconductor production
- Biotechnology companies
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TECHNICAL SPECIFICATIONS
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 referred to 14.5 psi [abs], +68 F, 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 +68 F … +113 F, rel. humidity <= 75% without condensation Compressed air temperature +68 F … +122 F Operational overpressure 43.5 … 130.5 psi, optional pressure reducer connected upstream for up to 4350 psi Humidity of measured gas <= 40% rel. humidity, pressure dew point max. +50 F, 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. 0.042 CFM, referred to to 14.5 psi [abs] and +68 F, (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
Analog output: 4…20 mA (electrically isolated)
Optional: 2x 4…20 mA analog output (electrically isolated),
2 alarm relays for external alarm unit, alarm values freely adjustableOperating hours counter integrated Dimension (mm) 7.87 x 5.12 x 4.72 inches (W x H x D ) Weight approx. 15.4 lbs
CS Instruments OIL CHECK 500 – Oil Vapour Monitoring Device
The OIL CHECK 500 is an advanced compressed air monitoring system. It continuously detects even the smallest residual oil values, meeting ISO 8573-5 standards. Featuring patented auto calibration, user-friendly operation, and a compact design, it offers unmatched sensitivity and process reliability.
