Automatic Air Release Value Tester For Lubricating Oil

MOEORW-WE301 Automatic Air Release Value Tester for Lubricating Oil, also known as Air Release Tester, Air Release Test Apparatus, SH/T0308 Air Release Analyzer, Oil Foam Air Separation Detector, Turbine Oil Air Release Testing Equipment in the industry. The whole machine is developed and manufactured in strict accordance with SH/T 0308-92 Standard Test Method for Air Release Value of Lubricating Oil, specially designed to test the foam air release performance of hydraulic oil, turbine oil and various petroleum products. It is widely applied in power plants, petroleum refineries, chemical manufacturers, third-party oil testing laboratories, construction machinery quality inspection departments and university energy chemical labs. It can accurately record the time required for the bubble volume in oil sample to decrease to 0.2%. All test data complies with national standard and can be used for CNAS laboratory accreditation review.

Applicable Standard
The whole machine hardware, temperature control system, gas circuit system and timing system fully comply with SH/T 0308-92 Standard Test Method for Air Release Value of Lubricating Oil; all test procedures and parameter limits are aligned with national standard specifications.

Test Principle
Heat the oil sample to standard test temperature of 25℃/50℃/70℃, feed compressed air at the same temperature for full agitation to form uniform foam bubbles inside the oil. After stopping air supply, judge residual bubble volume through density variation and record the time when foam air volume drops to 0.2%, which is defined as oil air release value. The complete test logic is solidified in the program of air release tester without manual conversion.

• Gas Circuit Assembly: Equipped with oil-free silent pump after 72h continuous no-load aging test for stable air flow. General G1/4 thread air inlet matched with φ10 PU tube, φ9/φ12 standard latex tube, universal consumables compatible with all air release test apparatus models. High-precision pressure gauge & adjustable pressure regulator maintain standard air pressure of 0.02MPa stably.
• Dual Independent Temperature Control: Dual-channel microcomputer separately controls water bath and air bath without mutual interference, featuring faster heating & constant temperature performance, the core hardware configuration of SH/T0308 air release analyzer.
• Intelligent Water Bath System: Real-time liquid level detection & one-key auto water replenishment. Acoustic & light alarm with heating cut-off under water shortage to prevent dry burning. Only purified water, demineralized water or ultrapure water is allowed for water replenishment.
• Touch Control System: Full Chinese visual touch screen integrated with clock calibration, dual timers, density input, separation timing, water replenishment, parameter setting, data storage and printing extension; operation interface fully matched with diagram manual.
• Sample Assembly: Standard jacketed glass test tube with φ12 standard connecting tube, anti-slip base. Standardized spare parts support bulk separate procurement.
• Safety Protection Structure: 3-core grounded power supply with independent fuse for overload & short-circuit protection. Gas circuit overpressure relief structure avoids tube rupture under pressure.

Dual Timing Function Timer 1 & Timer 2 with factory default setting of 5min and 7min, adjustable freely in parameter menu. Timer 1 for compressed air preheating, Timer 2 for oil aeration agitation. Auto acoustic & light reminder upon countdown finish without manual watch.

Dual Independent Temp Control Water bath & air bath can be switched on/off separately with customizable preset temperature. Built-in temperature correction function calibrates deviation via standard thermometer when changing working site or seasonal temperature fluctuation, ensuring long-term testing accuracy of foam air separation detector.

Density Input & Auto Separation Timing Manual input oil density within 0.6000~1.2000g/cm³; one-key start separation timing after air cut-off. Stop timing manually when density drops to d1=d0-0.0017 (0.2% bubble volume) to record final air release value. Judgment logic fully complies with SH/T 0308-92: Initial oil density d0, target density d1=d0-0.0017 corresponding to 0.2% residual air volume, serving as fixed timing stop standard without manual bubble estimation for unified error-free data judgment.

Auto Water Replenishment Protection 3-color liquid level indicator: Red = water shortage (auto water filling by one click); flashing green = moderate water level; steady green = full water with auto pump stop, unattended water supply.

Data Storage & Traceability Local auto storage of full test data including oil density, bubble separation time, test time and equipment calibration records, supporting page flip & single record deletion. Printing function is customized optional; serial printing module can be installed upon order remark to export paper test report for laboratory filing.

Equipment Calibration Function Built-in water bath & air bath temperature correction menu with pre-calibrated water bath P/I coefficients and air bath PID parameters at factory. Only professional staff can adjust temperature control parameters to avoid accuracy loss caused by misoperation of air release tester.

Full National Standard Compliance & Authoritative Test Results

All hardware & software aligned with SH/T 0308-92, temperature, timing and pressure error superior to standard limit. Each automatic air release tester is delivered with factory calibration certificate; test reports are recognized for qualification audit of third-party labs, power plants and petrochemical enterprises with wide compatibility.

Temperature re-calibration every 6 months under normal working condition is recommended. Standard mercury thermometer calibration for water bath & air bath is mandatory after season change or laboratory relocation to maintain consistent compliant test data.

Fully Automatic Process Reducing Manual Operation Difficulty

Solidified full national standard test procedure with auto water replenishment, timing reminder, one-key timing and auto data storage. Full Chinese touch screen matched with illustrated manual enables operator to master air release test apparatus quickly and cut manual error.

Modular Universal Spare Parts for Low Long-term Maintenance Cost

Industry standard tubes, connectors and glass test tubes with sufficient stock of wearing parts. Only faulty module replacement required for maintenance instead of whole machine return. Wide supply channels of consumables greatly lower long-term operation cost of SH/T0308 air release analyzer.

Multi-layer Safety Protection for Stable & Durable Operation

Equipped with dry burning prevention under water shortage, power grounding protection, overload fuse protection and gas overpressure relief. 23kg heavy stable body with anti-slip test tube base eliminates safety risk during long-hour continuous test, ideal for high-frequency laboratory testing.

Multi-function Single Unit Covering All Oil Types

One foam air separation detector completes air release test for hydraulic oil, turbine oil and all industrial lubricants. Single machine meets all relevant lab testing requirements to save procurement budget and bench space without multiple equipment purchase.

• MOEORW-WE301 Main Unit ×1
• Jacketed Glass Test Tube ×1 Set
• Complete set of φ10 PU tube, φ9/φ12 latex connecting tube
• Pressure Reducing Valve Assembly, PTFE Tape
• Power Cord, Spare Fuse
• Paper Product Operation Manual
• Factory Equipment Calibration Record Sheet Optional Consumables: Spare glass test tube, sealing gasket, replacement tubes, filter fitting, bulk bundled purchase supported.