The Scully ST-15C-WX series multiple-point liquid-level detection control units are available in three through twelve channel models. The ST-15C-WX is commonly used to provide overfill protection, high level warning, low level warning and/or individual pump and valve control
functions. They are well suited for multiple fixed storage tank and transport tank applications where individual display and/or output control is required.
The output control function may be reversed to alarm for a dry sensor condition rather than a wet sensor condition for low level warning.
The ST-15C-WX enclosure includes individual red indicator lamps that light when a sensor is wetted, a power indicator lamp, an alarm acknowledge push button and alarm test push button. Once a sensor alarm is acknowledged the alarm output circuit is reset, however, the indicator lamp remains lit until the sensor is dry again.
ST-15C-WX series controllers incorporate Scully’s unique and exclusive Dynacheck® circuitry when connected to Scully sensors. Using pulsed signals to simulate a wet or “unsafe” condition, the monitor automatically and continuously checks the entire system operation; controller, wiring, connectors and sensors for faults thirty (30) times per second.
If liquid comes in contact with the sensor tip, or in the unlikely event a fault occurs, the pulsed signals cease and the monitor signals an audible alarm and/or controls pumps and valves for immediate shutdown.
Compatible liquid level sensors for the ST-15C-WX employ solid state thermistor and Instant-On optic sensing technology. Sensors and holders constructed of aluminum or stainless steel for sensing a wide variety of liquid products including petroleum and chemicals are available.
