Why buy your flow sensor from a local supplier?
Sourcing flow sensors locally saves you weeks on lead time, gives you clearer compatibility guidance for South African projects, and puts replacement parts and accessories within easy reach. Communica stocks a wide range of flow meters - from turbine and paddlewheel sensors for water projects to thermal mass and hot-wire sensors for air - so you can select based on signal type, accuracy and installation constraints rather than guessing delivery times.
Practical benefits for makers, students and engineers
- Branch pickup in Samrand, Pretoria CBD or Cape Town reduces shipping cost and wait time for urgent builds.
- VAT invoices and account quotes available for tertiary labs and procurement teams.
- Accessory bundles include fittings, filters and matching signal conditioning modules so a prototype works first time.
Quick spec checklist - which sensor type fits your application?
Match the sensor principle to the fluid, flow range and required output. Below is a compact guide to typical choices:
| Type | Best for | Output | Notes |
|---|---|---|---|
| Turbine / Paddlewheel | Water, non-viscous liquids | Pulse frequency | Cheap, good for mid-range flows; needs clean fluid |
| Ultrasonic (transit-time) | Clean or slightly dirty liquids | Digital / analogue | Non-intrusive clamp or inline, wider range, higher cost |
| Thermal mass | Gases and low flow liquids | Analogue or digital | Good for low flows in gas lines; requires temperature compensation |
| Electromagnetic | Conductive liquids | Analogue / digital | No moving parts; needs conductive media |
Signal compatibility and integration
Decide whether you need a pulse, frequency, 4-20mA, 0-10V or digital interface (UART, I2C, Modbus). Hobby microcontrollers often accept pulse/frequency directly; industrial PLCs prefer 4-20mA or Modbus RTU. If you need to convert a pulse to an analogue signal, Communica stocks signal conditioners and counters - check related categories to match gear without delay: Shop by Category.
