Thermal Level Switches

Thermal Level Switches detect level by sensing the change in heat transfer at a heated sensor when it moves between gas and liquid, or between two different liquids. Products in this category span FCI FLT93 Series FlexSwitch instruments, including sanitary FLT93C switches, multipoint FLT93M insertion switches, heavy-duty FLT93F and FLT93S flow and level switches, and nuclear-qualified N-FLT93S switches.

Applications include:

• Liquid high and low point level alarms
• Liquid/liquid interface and foam detection
• Sump, tank, and separation vessel level monitoring
• Sanitary, high-temperature, high-pressure, or hazardous-area installations where supported by the selected model

Choose thermal level switches when you need point detection with no moving parts, interface or foam sensing, or combined level, flow, and temperature switching from one instrument.