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ST-15-WX Overfill Prevention and Liquid Detection Monitor
Brand: Scully Signal CompanyThe Scully ST-15-WX series multiple point liquid level detection control units are available in two through twelve channel models. The ST-15-WX is commonly used to provide overfill protection, high level warning, low level warning and/or 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-15-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.
Features- Incorporates Dynamic Self-Checking™ circuitry which monitors the controller, wiring, connections and sensors for faults thirty times per second
- Signals an audible alarm and/or controls pumps and valves for automatic shutdown
- Monitors from 2 –12 total sensing points depending on model
- Provides liquid level detection for a wide variety of petroleum and chemical products
- Uses output sensors approved as intrinsically safe for use in Class 1, Division 1, Group D hazardous environments
- NEMA 4 style watertight housings
- Works in conjunction with either Scully field-proven thermistor or Instant-On optic sensors
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07839
07851
07852
07853
07854
07855
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07860
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Specifications
Brand
Certifications & Approvals
- SIL
Product Range
- Gasoline Through #6 Oil, Waste Oil, Chemicals, Water, etc.
Indicator Light
- Green = Power On
- Red = Alarm Condition
Response Time
- High-level: 0.05 seconds maximum
- Low-level: 3-7 seconds
Environmental Protection
- NEMA 4
Power Requirement
- 115 Vac, ± 15 %, 50-60 Hz, 20 W Max.
- 240 Vac
Electrical Connection
- Internal Terminal Strips
Output Provision
- External Alarm, 115 Vac, 3 A Max.
- Individual Channel SPDT Contacts, Rated 5 to 250 Vac
- Chemical Applications