渣油的熔点较高，给贮运带来一定的困难，特别是人工装车时，要时刻监视渣油的液位。要实现渣油装车的自动化，可以通过检测渣油的液位来实现，但通常的液位检测方法不适合渣油。由于渣油一般在６０℃以上进行贮运，利用此特点，我们用温差检测方法设计制作了一台渣油液位... Residue higher melting point, to bring some difficulties in storage and transportation, especially when loading manually, we must always monitor the level of residual oil. In order to realize the automation of residue loading, it can be realized by detecting the level of residual oil, but the usual liquid level detection method is not suitable for residual oil. As the residual oil is generally stored and transported above 60 ℃, using this feature, we design and manufacture a residual oil level by the temperature difference detection method.