... 3.IEC156. Transformer oil tester unit,oil testing device,oil detection set: 1.LCD displayer oil tester. 2.oil tester ... off state can continue to run.5. Anti-interference ability6. Detection with high precision7. Small size, light weight, easy operationsTechnical ... ,oil reconstituted,oil restituting,oil recoverying,oil recondition,oil filters,oil refiner,oil cleaning,oil recycle,oil separator,oil ...