Home7. FAQ's and KnowledgebaseDissolved OxygenDoes the Hach Sension range of meters include… Dissolved Oxygen / pH meters and electrodes / Water Analysers Does the Hach Sension range of meters include a carry case? August 28, 2009 David Miller Does the Hach Sension range of meters include a carry case? The Hach Sension meters are an established range of portable and benchtop electrochemistry meters for pH, conductivity and Disssolved Oxygen. The portable meters are all supplied with a carry case.