DESCRIPTION
Protecting the Integrity of Industrial Process Signals MODEL Benefits ! ! Cost-Effective Multiple Input Processing "Bumpless" Transfer Prevents Equipment Damage Relay Contacts for Channel Status Easy Plug-in Installation/ Low Mean-Time-to-Repair AC Line Powered Three Year Warranty Action Pak model AP4502 high input select transmitter provides a DC output in proportion to the highest of 2 channel inputs. When one input level exceeds the other, the output smoothly transfers to reflect the new higher input. This action is commonly called “bumpless” transfer. A set of SPST reed relay contacts is provided for each input, which identify the highest channel. APPLICATION Typical applications include multipoint temperature, flow and level monitoring. ! ! ! ! OPTION U Urethane coating of internal circuitry for protection from corrosive atmospheres. CALIBRATION Top-accessed screwdriver adjustments provide typical ±10% zero and span adjustability. Calibration is referred to the input in that adjustments are to correct for input/sensor variations.
