Automated Air Release Value Analyzer


The ability of a turbine, hydraulic, or lubricating oil to separate entrained air is a key performance characteristic in applications where agitation causes a dispersion of air bubbles in the oil. To determine air release properties, the sample is heated to a specified test temperature and blown with compressed air. After the air flow is stopped, the time required for the air entrained in the oil to reduce in volume to 0.2% is the air bubble separation time.

  • Conforms to ASTM D3427, IP 313 and related specifications
  • Integrated Touch Screen Control Panel
  • Automatic Lift System that moves test vessel from air source to balance sinker
  • Automatic calculation of final sample density for determination of air release value
  • Integrated Circulation Bath with water level indicator
  • Integrated Balance
  • Secure Clamp Mechanism of the air tube
  • Automated Jacketed Test Vessel draining
  • Safety Shield
  • LIMS Compatibility

The Koehler Air Release Value Apparatus consists of a test vessel and air flow control equipment for delivering heated air at the specified flow rate to a lubricating oil sample maintained at constant temperature. The Integrated Touch Screen Control Panel guides user from start to finish of test operation and provides density calculation and timing operation for measuring the air release value of the test sample. Drying oven available as additional accessory for warming test oil at temperatures of up to 100°C; Integrated Circulating Bath and air bath for sinker; compressed air heater, over-temperature and over-pressure protection circuitry. Automatically measures the time for air release.

  • Sinkers, 5mL and 10mL
  • Integrated Balance
  • Integrated Circulator
  • Air Bath for Sinker
  • Tubing and Fittings
  • Platinum Wire
  • Jacketed Test Vessel

Conforms to the specifications of: ASTM D3427; IP 313; ISO 9120; DIN 51381; NF E 48-614; NF T 60-149; BS 2000 Part 313

Temperature Range: Ambient to 75 °C (167 °F)

Sample Temperature Stability: ±0.1 °C

Air Temperature Stability:  ±0.2 °C

Density: ±0.001 g/mL

115V 60Hz, Single Phase
230V 50/60Hz Single Phase

wxdxh,in.(cm): 24x23x34 (60.96x58.42x86.36)
Net Weight: 115 lbs (53 kg)

Below are links to tutorial videos for this product