Model 308A and 306 Summing Units provide a multi-cell interface for load cell signal conditioning instrumentation. Versions available are capable of (analog) summing up to 8 individual transducer signals. A wide range of enclosure options are available for washdown, corrosive, and electrical hazard applications. Operationally, these units perform the multiple tasks of distributing excitation current, summing transducer output signals, and protecting wiring and connections. A unique circuit design in the 308A unit minimizes the effects of system unbalance and electrical leakage. This added protection is beneficial when equipment is located in a harsh, corrosive atmosphere. Model 306 units are compatible with Plug-n-Weigh instrument calibration procedures for faster system start-up. 304 Extension Boxes are used whenever transducer cables are not long enough to reach the summing unit or system instrumentation. The internal terminal block or connection provides for either a four wire or six wire (remote sensing) hookup. A range of metallic enclosures are available for washdown, corrosive, and electrical hazard applications. Applications: Load cell summing Hazardous location installations Cable extension boxes Cables