A Capacitance Level Switch is a point-level sensing device used to detect the presence or absence of liquids, slurries, in tanks and silos. It works on the principle of capacitance change—as the process material comes into contact with the probe, the dielectric constant changes, altering the capacitance between the probe and the tank wall. This change is sensed by the electronics, triggering a switching output.
Capacitance level switches are ideal for non-contact, maintenance-free operation, suitable for conductive and non-conductive media in chemical, food, and pharmaceutical industries.
| Measuring Principle | Capacitance based level switch |
| Probe Length | 100mm to 6,000mm |
| Rated Pressure | Up to 10 bar. |
| Die-electric | ≥1.6 |
| Probe Material | AISI SS 304/AISI SS 304L/ AISI SS316/ AISI SS316L/ PTFE |
| Insulation Material | PTFE |
| Power Supply | 24 VDC or 110-230VAC. |
| Output | SPDT Relay (1 NO+1 NC)/DPDT Relay (2 NO+2 NC) |
| Enclosure | Die cast aluminium FLAMEPROOF CERTIFIED TO II 2 G EX DB IIC T6 GB |
| Cable Entry | M20 x 1.5, 1/2” NPT |
| Resolution | ±0.1% On FSD |
| Response Time | <1 second |
| Linearity | ±0.5% On FSD |
| Accuracy | ±0.5% On FSD |