| 摘要 |
A measurement system 12 for measuring a volume of lubricant in a bearing (10, Fig. 1), the system comprising a pressure regulator 25 connected to an interior of the bearing via a channel 21, a valve 31 in the channel between the pressure regulator and the bearing, and a pressure sensor 27 to measure a pressure in the interior of the bearing. There is also a controller arranged to control the regulator and the valve so as to instantly supply or release a predefined overpressure to/from the interior of the bearing arrangement, and to measure the pressure in the interior during the supplying or releasing of the overpressure. It then determines a volume of gas flown into or out of the interior using the measured pressure, and subsequently determines the volume of the lubricant using the determined volume of gas, the measured pressure or optionally a known empty volume of the interior. There may optionally be a flow sensor in the channel. Leakage from the bearing may be modelled and measured. |
