Ronan Engineering抯 Models LS-1 and LS-3 Vertical Liquid Sensors (and the variations LS-3s and LS-3ss) are designed to detect changes in liquid level within reservoirs or the intrusion of liquid in dry containment zones and caisson compartments where vertical positioning of the sensor is allowed. Both the LS-1 and the LS-3 are constructed of 304 and 316 stainless steel, polysulfone, Buna-N and PVC. The LS-3s includes an integral Pull-to-Test cable, required in some jurisdictions. The LS-3ss Sensor is constructed of 304 and 316 stainless steel and Teflon, and is designed for use in chemical applications where corrosion is a concern. All LS-3 sensors are designed to provide years of trouble-free service.

• Double Wall Steel Tank Interstice Monitoring
• Piping Containment Sumps
• Sub-pump Containment Sumps
• Fill Riser Containment Sump
• High Level/Overfill Monitoring
• Vertical Application Point Level Sensing
• Where Ground Level Testing is Required
• Corrosive Chemical Monitoring

All LS-1 and LS-3 sensors have user selectable logic and may be installed in wet or dry conditions. Liquid collection or loss, sufficient to move the float will transmit a signal to the control panel to initiate control functions or annunciate alarms. The sensor抯 design allows rigid or flexible mounting to allow easy periodic testing as required by many regulatory agencies. The sensor may be mounted loosely suspended by its cable or rigid with the 1/2 inch NPT nipple.

Ronan抯 LS-1 and LS-3 Sensors operate on a direct principle. A glass encapsulated hermetically sealed reed switch is embedded within the sensor stem. Permanent magnets within the sensors float create a magnetic field which surrounds the reed switch holding the switch closed. When the magnetic field is removed by movement of the float, the reed switch is actuated, thereby changing the state. This condition either opens a closed switch or closes an open switch. This change in state is then signaled to the control panel.

• Wetted Parts: 304 and 316 Stainless Steel, Buna-N, Polysulfone, PVC, Teflon
• Mounting: 1/2 inch NPT, male
• Switch Rating: SPST, 20VA, 120-240 Vac pilot duty
• Operating Temperature: -40篎 to +180篎 (LS-3 & LS-3s), -40篎 to +300篎 (LS-3ss)
• Float S.G.: 0.55 (LS-3 & -3S), 0.77 (LS-3ss)
• Pressure: 150 psi maximum (LS-3 & LS-3s) 400 psi maximum (LS-3ss)Cable: PVC or Teflon jacket, twisted pair, 20AWG, 22 ft

Related Support Material : Vertical Liquid Sensors   Key: [L] = Registration Required - [R] = Reps Only

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