Before the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) was created and implemented, there were many different regulations on hazard classification in use in different countries, resulting in multiple standards, classifications and labels for the same hazard.
Pneumatics Vs Hydraulics. The pros and cons of each system. Pneumatics offer a very clean system, suitable for food manufacturing processes and other processes which require no risk of contamination. Hydraulics is generally not used in these environments due to the risk of hydraulic oil leaks from faulty valves, seals or burst hoses.
The Difference between an Open and Closed Loop System. In CNC systems, open and closed loop systems describes the two primary types of control systems: Open Loop: Refers to a system using a stepper motor, where the communication between the controller system and motor is one way. The process is fairly simple.