Intelligent leakage control
SQ4 safety leak detection: Because every drop matters
In automated IVD and biomedical systems, fluidics are mission‑critical. Even a small leak can jeopardize measurement accuracy, contaminate sensitive areas, or lead to unexpected downtime. Panasonic’s SQ4 Safety Liquid Leak Sensor is specifically engineered to prevent these risks with a compact, safety‑rated, and highly reliable detection system.
Two stage detection: early warning + safety stop
The SQ4 incorporates two independent detection units in one sensor—a major advantage over traditional multi-sensor setups.
- Stage 1 – Early Warning: Detects even small, incipient leaks using a front detection unit, allowing preventive intervention before damage occurs.
- Stage 2 – Critical Leak Detection: When liquid reaches the center detection unit, the sensor issues a safety‑critical output to stop equipment immediately and prevent contamination or system failure.
This architecture improves productivity by enabling planned maintenance while still offering a reliable safety stop when required.
Functional safety for modern lab equipment
For systems requiring the highest safety integrity, such as advanced IVD analyzers, automated cell culture platforms or reagent-handling modules, the SQ4 can be paired with the SQ4‑C11 Safety Controller.
This combination meets:
- Category 4 / PLe / SIL3 under ISO 13849‑1
This enables engineers to build lab instruments with robust fault detection, redundancy, and clear response behavior. All essential in safety‑critical automated environments.
Built for real lab conditions
Laboratory automation systems often use multiple reagents, cleaning fluids, and high-throughput liquid handling modules. The SQ4 responds directly to these challenges:
- Material options: Standard polypropylene or chemically resistant PFA for compatibility with harsh fluids.
- Easy maintenance: A two‑part bracket design allows quick installation, removal, or cleaning. Ideal for systems with tight service windows.
- Human‑error detection: If the sensor is improperly installed, dislodged, or disconnected, it produces the same output as a leak, preventing unnoticed failures.
These design elements make SQ4 integration safer, simpler, and more robust for OEM engineers.
Where the SQ4 makes a difference
Common use cases in laboratory and IVD automation include:
- Pump heads and reagent manifolds
- Valve blocks and redundant fluid paths
- Wash stations and waste areas
- Cartridge- or microfluidic-based platforms
In each case, the two‑stage detection approach helps avoid unexpected contamination, protect samples, and maintain uptime.
