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Cir' •' �� •R •. -, e,. .b.i w aes -ti.9XE. SaiYxii4°`"=:W I OCT 16 214 S E R I E S X 7 6 ENVIRONMENTAL HEALTH f. Vertical DEPARTMENT Liquid Sensors A Models LS-3 -3 / s/-3/ I Ronan's Model LS-3 Vertical Liquid Sensor 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 compart- Model LS-3 Model LS-t ments where vertical positioning of the sensor is allowed. The LS-3 is constructed of 304 and 316 stainless steel, 1----- ' "--- polysulfone, Buna-N and PVC. The LS-3s includes an Typical Applications integral Pull-to-Test cable, required in some jurisdictions. IS DW Steel Tank Interstice Monitoring The LS-3ss Sensor is constructed of 304 and 316 stain- • less steel and Teflon, and is designed for use in chemical Piping Containment Sumps applications where corrosion is a concern. All LS-3 sen- • Sub-pump Containment Sumps sors are designed to provide years of trouble-free service. • Fill Riser Containment Sump All LS-3 sensors have user selectable logic and may • High Level/Over611 Monitoring be installed in wet or dry conditions. Liquid collection or • Vertical Application Point Level Sensing loss, sufficient to move the float will transmit a signal to • Where Ground Level Testing is Required the control panel to initiate control functions or annunci- Is ate alarms. The LS-3's design allows rigid or flexible Corrosive Chemical Monitoring mountingll to allow easy periodic testing as required by many regulatory agencies. The sensor may be mounted LS-3 Sensor Switch loosely suspended by its cable or rigid with the 112 inch NPT nipple. I'S 3 Season ('class Early Sealed Dependable, Simple Operation Hemetically Scaled h t Rred Switch Assemblv Ronan's LS-3 Sensors operate on a direct principle. A glass encapsulated hermetically sealed reed switch is Stem- — embedded within the sensor stem. Permanent magnets within the sensors float create a magnetic field which sur- Magnet rounds the reed switch holding the switch closed. When Reed the magnetic field is removed by movement of the float, Switch the reed switch is actuated, thereby changing the state. float This condition either opens a closed switch or closes an open switch. This change in state is then signaled to the control panel.