Flow Switch | How to Select a Flow Switch as per Line Size | Flow Switch Size calculator. A flow switch is an instrument used to detect the presence or absence of flow in a pipe or system. Its main purpose is to monitor, control, or protect equipment by triggering an alarm or switching a device ON/OFF when flow conditions change. Definition: A flow switch is a device that detects the presence or absence of flow (liquid, gas, or air) in a pipe and changes a switch state to trigger alarms, control equipment, or protect systems. basically flow switch is a device that activates a switch when liquid, gas, or air starts flowing or stops flowing through a pipeline. How it works A flow switch has a sensing element (paddle, vane, thermal probe, ultrasonic sensor, etc.) and a switch mechanism (mechanical or electronic). When flow crosses a set threshold the switch changes state (ON ↔ OFF) and sends a signal to pumps, alarms, PLCs, or safety interlocks. Common types ...

Pressure Drop Calculator Pressure Drop Calculator Calculate pressure drop using Darcy–Weisbach, Ergun, or Bernoulli equations. Select method Darcy–Weisbach (pipe) Ergun (packed bed) Bernoulli (head loss) Calculate Reset

Cable & Breaker Size Calculator Input Type Power (kW) Current (A) Power (kW) Current (A) Voltage (V) System Type Single-phase Three-phase Material Copper Aluminium Calculate Enter values and click Calculate.