There are two optional modifications that can be done to your 9p at our facility (during service or as part of your original order) that will allow the 9p CTD to operate in freshwater deployments. The 9p’s pump will not operate in freshwater without these options.
First, the Modem Pump Control, allows you to control the pump directly, bypassing the requirement for it to see a certain conductivity frequency to activate. (On other CTD’s we can change this conductivity value to allow both freshwater and saltwater).
The second option is the freshwater contact pin, an optional pin modification that allows for the detection of fresh water by the 9p.
Categories:
Scientific,
Field Procedures & Deployment