The MicroApolarm(TM) oil leak detection system is designed for optimum performance in small indoor or underground drain pits for conduits or channels.
It comprises a floating-body hermetically-sealed capacitance sensor (CSR-1505) and a signal converter (AS-20 ) for power supply, signal conversion, and alarm activation. The CSR-1505 sensor circuit applies a high-frequency potential to three electrodes which project downward from the float body.
If an oil layer forms on the water, and the electrodes thus project into oil rather than water, it effectively lowers the capacitance between the electrodes and ground. This change is detected, amplified, and conveyed as a signal current from the sensor circuit via the sensor cable to the AS-20 signal converter, which then engages the oil leak alarm circuit.
Salient features
Optimum performance in confined spaces
Sure, accurate oil detection by sensor just 150 mm in diameter.
Efficiency and ease of use in indoor and underground channel drain pits.
Inherent operational reliability
Asymmetric float conformation at waterline, for stable function and operation.
Delay circuit in signal converter, to prevent false alarms due to transient electrode lift-out from water.
Float and electrode geometry designed to prevent short-circuiting by sludge or slime deposits.
Electrodes designed to prevent false alarms due to grease or grime adhesion.
Strong, durable construction
Impact-resistant PVC float body.
Stainless steel (SUS 316) electrodes.
Flex-, heat-, and oil-resistant sensor cable with PVC sheathing.
Fail-safe alert
System alarm automatically initiated by relay circuit, in the event of power loss at signal converter, cable disconnection, or cable short-circuit.
