The Apolarm™B system is designed to detect the presence of a relatively heavy liquid layer below a lighter liquid layer ? and thus to detect heavier-than-water liquid chemicals in water and conversely to detect water in oil and other light liquids. The system comprises a hermetically-sealed capacitance sensor (CS-0305) and a signal converter (AS-15) for power supply, signal conversion, and alarm activation. The CS-0305 sensor circuit applies a high-frequency potential to a single electrode at the bottom of the sensor, and detects any significant change in capacitance between the electrode and ground. If an extraneous liquid layer forms below the lighter liquid, the resulting change in capacitance is detected, amplified, and conveyed as a signal current from the sensor circuit via the sensor cable to the AS-15 signal converter, which then engages the liquid leak alarm circuit.
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Salient features
・Heavier-than-water liquids at the bottom of a container. ・Heavier-than-oil water at the bottom of a container
Depending on the type of mixed oil, it may not be able to detect accurately. We recommend prior verification before installation. Please contact your distributor or our sales department.
Delay circuit in signal converter, to prevent false alarms due to transient fluctuation.
・Stainless steel (SUS 304) sensor body. ・Stainless steel (SUS 316) electrode. ・Flex-, heat-, and oil-resistant sensor cable with PVC sheathing.
System alarm automatically initiated by relay circuit, in the event of power loss at signal converter, cable disconnection, or cable short-circuit.
Specifications
Sensor - Apolarm™B (CS-0305)
Heavier-than-water liquids at the bottom of a container
・ Specific gravity greater than 1.0 and relative permittivity of approx. 5.0 or less ・ Insoluble in water (not water-soluble) ・ Capable of detecting water settled under oil as well
Signal Converter - AS-15
System schematic
