Case study
Segment LCD for an RO Water Treatment Controller
TDS, tank level and valve state on a controller that lives in a wet, unheated plant room.
The requirement
Reverse-osmosis controllers are installed next to the tanks and pipework, so they see humidity, splashes and cold. The readout has to show water quality and system state at a glance.
What we supplied
- Segment layout for TDS value, tank level, valve and pump state
- Wide temperature range for unheated plant rooms
- Transflective structure: readable in daylight, backlit for cabinets
- Sealing agreed with the enclosure supplier
Why segment LCD
Water treatment parameters are fixed fields with alarm states. A segment display is easier to seal, cheaper and more readable in daylight than a small graphic module.
