Meters of Petroleum Equipment measure the consistency of lubricating greases (Penetrometer) or determining their heat value which do not contain water, coal, paraffin and other combustible substance (Oxygen Bomb Calorimeter) or can trace low levels of free, emulsified and dissolved (Coulometric Karl Fischer Titrator) - Adopting semiconductor refrigeration to decide the refrigerating capacity according to the calorific value, the instrument can automatically adjust water temperature and keep water in a relative constant temperature range, realize the continuously and long time test requirement, and make sure the test result is correct. Using USB port, convenient to connect. One computer can control many sets of Oxygen Bomb Calorimeter. Adopting professional discharge water ports, more convenient and fast when the instrument drains away water or change the water.The electronic balance with communication function to share the data by the internet.