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The BFC-NC-001 utilizes a capacitance-based sensing principle to detect the presence or absence of liquid at the installed height. When mounted on the exterior wall of a non-metal container (1–5 mm thick), the sensor monitors changes in the dielectric properties at the sensing surface:
Liquid present: The dielectric constant increases, causing the sensor output to switch to LOW.
No liquid: The dielectric constant decreases, and the output remains HIGH.
Because the sensing mechanism operates through the container wall, the device provides a non-invasive, maintenance-free method for level monitoring, ideal for applications where cleanliness, isolation, or ease of installation is critical.
Non-contact sensing through non-metal container walls (1–5 mm)
No exposure to liquid, preventing contamination or corrosion
Simple installation with integrated adhesive tape
Wide supply voltage: 2.5–5.5 VDC
Ultra-low operating current: 290 µA (typ. at 5 V)
Sinking output:
LOW = Liquid Detected
HIGH = No Liquid
Compact size for tight integration
Operating temperature: –30°C to +85°C
Ingress protection: IP62
Standard 3-wire interface with JST 2.54 mm connector
Maintenance-free solid-state design (no moving parts)
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