ACE Downhole is a U.S. based ISO certified manufacturer of downhole sensors for ESPs and other Artificial Lift with distribut ... ion offices in Latin America, Middle East, and Asia Pac. ACE ESP sensors allow you to predict ESP motor and cable run life by continuously measuring true ESP insulation resistance. Sealed and dry design of ACE ESP sensors allows ESP companies to keep re-installing them without the need for service or repair generating cost savings. Put ACE Xtreme ESP sensor model to work for you in the most challenging operating conditions – 8,000 PSI, 350 °F well temperature, 600°F motor temperature in 3.72" OD. read more