Signal SD-ULS10 Ultrasonic Level Sensor

The Signal SD-ULS10 Ultrasonic Level Sensor is a precision tank-level monitoring sensor designed for use with Signal SDS Series Two-Wire Irrigation Controllers. Using non-contact ultrasonic technology, the SD-ULS10 accurately measures fluid levels in tanks, reservoirs, and sumps—relaying real-time level data back to the SDS controller via a connected Signal DataNode (Switch or Analog type).

Ideal for pump protection, tank level control, and automated fill or stop sequences, the SD-ULS10 helps safeguard irrigation operations by enabling the controller to pause programs or trigger alarms when low or high levels are detected.

The sensor is housed in a rugged, field-ready enclosure suitable for outdoor and agricultural environments. Wiring is simple and integrates directly with SDS systems using standard input configurations. A clear wiring guide is supplied with each unit.

FEATURES

• Ultrasonic non-contact level detection for tanks and reservoirs
• Integrates with SDS irrigation controllers via DataNode
• Real-time tank level feedback to controller or SignalCloud
• Ideal for triggering irrigation start/stop, pump cut-off, or low-level alerts
• Helps prevent pump dry-running and tank overflow
• Durable housing for outdoor and agricultural applications
• Supplied with wiring guide for fast installation

APPLICATIONS

• Monitoring tank or sump water levels in irrigation systems
• Automating pump start/stop sequences based on water level
• Pausing irrigation programs during low-level events
• Rainwater harvesting, bore tanks, or fertigation reservoirs
• Integration with SDS-50, SDS-75, or SDS-100 controllers via DataNode

SPECIFICATIONS

• Model: SD-ULS10
• Technology: Ultrasonic (non-contact)
  
• Output Type: [Analog 4–20mA or Digital switch, depending on configuration]
• Power Supply: Via SDS controller/DataNode (12–24VDC)
• Mounting: Top-mount above fluid surface
• Enclosure: Weather-resistant housing suitable for field installation
• Wiring: Supplied with sensor wiring diagram (included)
• Compatibility: SDS-50, SDS-75, SDS-100 (via DataNode input)