ST-600 Float Level Transmitters
ST-600 float level transmitters by Seojin Instech, Korea, measure liquid level continuously up to 5.9 m with a 4–20 mA output for remote indication and control; explosion-proof versions available.

Product Overview
The ST-600 measures liquid level continuously: the float moves up and down with the level by buoyancy and changes the resistance inside the guide tube; this is converted into a 4–20 mA DC current signal for level indication and control.
It costs less than other level instruments, offers local or remote indication and is available in explosion-proof versions. Wetted materials (304/316 stainless steel, PVC, PTFE) are chosen to suit the medium.
Applications: industrial water, pure water, wastewater, drinking water; tanks on ships; LPG, chemicals, oils, acids and solvents.
Technical Data
- Principle
- Float changes resistance with liquid level
- Measuring length
- Up to 5.9 m
- Temperature
- Standard -20 to 60 °C; optional up to 150 °C (depends on explosion-proof version and materials)
- Pressure
- 304/316 stainless steel up to 10 kg/cm²; PVC, PTFE up to 2 kg/cm²
- Output
- 4–20 mA DC
- Power supply
- 15 – 32 V DC
- Options
- Explosion-proof; local or remote indication
Reference data as published by the manufacturer. Contact Ha Thanh for help choosing the right model.
Documents
Need a catalogue, drawing or datasheet for this product? Contact Ha Thanh for documents.

