Common Models:
– DeltaM: Versatile Flow Detection in any Application
– Flow-Captor: low cost and rugged SS models
– InnovaSwitch: Explosion proof model
Liquid Flow Switches monitor minimum flow conditions to safeguard equipment and ensure process continuity. Using paddle, thermal, or differential-pressure sensing, they detect flow/no-flow and trigger alarms or interlocks when rates fall below setpoints. Suitable for DN15–DN300 pipelines (larger via insertion), they accommodate pressures up to PN40 and temperatures to +150°C. Adjustable setpoints and robust wetted materials (stainless steel, brass, engineered plastics) fit diverse liquids including water, glycol, oils, and chemicals. Outputs include relay, transistor, and optional analog/digital signals for PLC integration. Ideal for pump protection, cooling circuits, and utility lines, they deliver simple installation, high reliability, and low maintenance.
| Feature | Specification |
|---|---|
| Product Type | Liquid Flow Switch (Inline or Insertion) |
| Sensing Principle | Paddle, thermal (heat transfer), or differential-pressure |
| Measured Media | Clean or lightly contaminated liquids (water, glycol, oils, chemicals) |
| Pipe Size Range | DN15 to DN300 (½” to 12″); larger sizes via insertion |
| Setpoint Range | Typical 0.3–3 m/s (adjustable), application-dependent |
| Switching Accuracy | Typically ±2–5% of setpoint |
| Process Pressure | Up to PN40 / ASME Class 300 (model dependent) |
| Process Temperature | -20°C to +150°C (higher with special versions) |
| Outputs | Relay (SPDT), transistor/open-collector, optional 4–20 mA or digital |
| Applications | Pump protection, cooling-water verification, CIP/SIP, line interlocks |
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