The proportional feed system, Stenner refers to as the PCM system consists of three components. PCM – pump control module Single head fixed output pump (45 or 85 model) Dry contact water meter The water meter sends a pulse signal to the PCM which activates the pump to deliver the desired dose based on water volume. The PCM turns on the pump for the set duration determined to inject the solution into the water line. Run-Time Duration: PCM1: 0.1 to 1.0 Second There are four models with different on-time duration settings that are factory preset. The PCM’s available time range can be converted to any of the four time ranges available without purchasing another PCM model. Click on Installation below for the formulas to select your PCM, pump and water meter. Specifications: Housing: Polycarbonate plastic Timer: Microcontroller with triac output Turndown ratio: 10:1 Input signal: Non-voltage dry contact, water meter Time range: Interchangeability located inside Reset time: Immediate Minimum signal durations: 10 milliseconds Input electrical: 120V 60Hz No load current: 0.45 mA AC maximum Output electrical: Maximum device load, 1.8 amp at 120V
