Endress+Hauser (Endress and Hauser) is a Swiss-based instrumentation and process automation company. Endress+Hauser operates in the instrumentation market with offices around the world, producing instruments measuring level, flow, pressure, and temperature. They also produce a range of analytical instrumentation measuring variables in water quality, such as pH/ORP, conductivity, dissolved oxygen, and turbidity. The company produce a range of instrumentation designed for use in dangerous environments and extreme conditions.