The new S651CD submersible electrode and S656CD insertion electrode combine superior performance with lower maintenance requirements and longer life. S651CD is an upgrade to the original S650CD. It can replace the S650CD and S650CDHT, and is designed for measurements in tanks, flumes and sewer lines. The S656CD is an upgrade to the S656CD electrode, and can be used in place of the S655CD, S655CDHT and 970283 models.
