... , saline, phosphate, calcium compound, etc.·Oil refiningLubricating oil, aromatics, fuel oil, and vegetable oil, etc.·Food processingTomato juice, grape juice, ... hydroxide, etc.·Petrochemical Natural gas, coal gas, lubricating oil, and oil / water interface Technical parameter·Signal outputTwo wire current ... Hayne’s alloy or PTFE coating·StuffingSilicon oil DC200, high temp silicon oil, olive oil