Cleanroom Testing and Validation Instruments

Compressed Air Oil Content Tester

A portable case-style compressed-air oil testing platform with regulated bypass sampling, pressure and flow indication, oil-vapour measurement and dedicated connections for phase-appropriate sampling modules.

Regulated compressed-air bypass sampling.
Visible pressure and flow control.
Phase-appropriate oil measurement paths.

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Product Introduction

This portable tester conditions a representative side stream from a compressed-air line before it reaches the selected oil measurement path. An inlet regulator, analog pressure gauge and variable-area flowmeter establish stable sampling conditions, while stainless and PTFE wetted parts help limit hydrocarbon carryover. The integrated oil-vapour channel displays the normalized residual-oil result and supports logged spot checks after dryers, adsorbers and oil-free compressors. Liquid oil and oil aerosol require a separate coalescing-filter or sampling-disc method, so the front sampling interface accepts an appropriate holder without treating vapour and aerosol as the same measurand.

Key Features

Regulated bypass sampling protects the measurement path from abrupt line-pressure changes.

Dedicated pressure gauge and vertical variable-area flowmeter make sample conditions visible at the instrument.

Integrated display presents the oil-vapour result and sampling status without resembling a smoke visualizer.

Short stainless and PTFE flow paths reduce adsorption, desorption and contamination from unsuitable hose materials.

Separate quick-connect inlet and sampling outlet prevent accidental reversal of the controlled flow path.

Rugged carry-case enclosure, fold-flat handle and four feet support clean transport and stable bench placement.

Customer Product Concerns

Oil-vapour and oil-aerosol results are only meaningful when the sampled phase, location, pressure, flow, duration and wetted materials are controlled, so the sampling plan must be defined before connecting the instrument.

Pressure surges or an unstable bypass flow can change response time and make sequential samples difficult to compare.Use the inlet regulator, pressure gauge and needle-valve flow control to stabilize the indicated sample conditions before recording the result.

Hydrocarbon residue in a hose or fitting can create carryover after a contaminated sampling point.Use short clean stainless/PTFE wetted paths, flush the line, cap both ends during transport and replace contaminated sample tubing or holders.

Oil vapour, liquid oil and oil aerosol require different collection and analysis methods.Select the vapour sensor or sorbent-tube path for vapour and a coalescing-filter or sampling-disc holder for aerosol, then report each phase with its applicable method.

A non-representative point or unrecorded flow and time can invalidate a sample-volume calculation.Take a representative side stream after system stabilization and record pressure, flow, duration, temperature and sampling location with the result.

Typical Applications

Oil-vapour checks downstream of activated-carbon adsorbersCommissioning of oil-free compressor and treatment trainsCleanroom process-air and instrument-air verificationPharmaceutical, food and electronics compressed-air surveysMaintenance trending before and after filter replacement

Technical Parameters

Representative construction for a portable compressed-air oil testing platform is listed below; sensor range, upstream pressure reduction, sample holder and analysis path should be selected for the expected oil phase and required reporting method.

Core Material	PC/ABS and coated-aluminum portable enclosure with TPE corner guards, anodized-aluminum panel, stainless sampling fittings, borosilicate flow tube, PTFE sample hose and electronic oil-vapour sensor module
Panel Thickness	Typically 2.0-3.0 mm for the molded enclosure and internal mounting panel
Effective Width	Approximately 320-380 mm across the portable instrument case
Maximum Length	Approximately 400-480 mm for the complete closed case, excluding detachable hoses
Steel Facing Thickness	Typically 0.8-1.2 mm for the internal shield, fitting brackets and sampling-module retainers
Core Density	Approximately 1100-1200 kg/m³ for the PC/ABS enclosure blend
Thermal Conductivity	Approximately 0.19-0.22 W/(m·K) for the PC/ABS enclosure blend
Surface Finish	Dark-navy fine-texture case, light-gray anodized control panel, cyan port rings, black controls, clear flow tube, blue inlet hose and translucent PTFE sample line
Joint Type	Stainless quick-connect inlet, compression-sealed PTFE sample outlet, panel-mounted pressure regulator and needle valve, replaceable sampling holder and strain-relieved data/power ports
Customization	Available based on the intended application and operating environment.

Available Options

Integrated photoionization oil-vapour measurement channelPressurized sorbent-tube holder for laboratory analysisInline coalescing-filter or sampling-disc aerosol holderHigh-pressure upstream regulator and quick-connect adapter setAlternative PTFE hose lengths and stainless sampling lanceInternal data logging, USB export and protective transport case

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