These features mean the sensor is still effective regardless of temperature or the angle at which the user holds the inhaler, making it suitable for the device. In addition, because the sensor measures just 1 cubic inch, the inhaler can be portable. Determining Oil's Fate Oil replacement and disposal can be expensive factors in engine maintenance, especially in light of environmental regulations. An instrument from Fluitec in Dayton, Ohio, enables users to determine when oil has reached the end of its useful life so they never have to change the oil too soon. This led to timely repairs and possibly saved both equipment and lives.
Ruler works by measuring the level of antioxidant additives in the oil.
If there has been significant degradation in the oil, the oxidants will have depleted the antioxidants. A very low level indicates that the oil has undergone significant degradation and needs to be changed. One of the first commercial uses of the Ruler has been at an electric utility's nuclear power plant. In addition, changing the lubricating oil in coolant pumps at a nuclear plant is a time-consuming operation, so utilities want to replace the oil only when absolutely necessary. Fast maintenance also limits workers' exposure to radiation.