Pointek CLS200 Level Switch

The SIEMENS Pointek, CLS200 level switch, is a versatile inverse frequency shift capacitance level switch with optional rod/cable choices and configurable output, ideal for detecting liquids, solids, slurries, foam and interfaces. The digital version (with PROFIBUS PA) includes a display and provides additional diagnostic features. The Siemens Pointek CLS200 is offered in standard and digital versions.

The standard version has 3 LED indicators with fundamental relay and solid-state switch alarms. The digital version provides an integral LCD for standalone use and provides PROFIBUS PA communication (Profile version 3.0, Class B) to connect to a network.

The power supply is galvanically isolated and accepts a wide range of voltages (12 to 250 V AC/DC for a standard version and 12 to 30 V DC for the digital version). The stainless steel and PPS (PVDF optional) materials used in the probe construction provide a temperature rating up to +125 °C (+257 °F) on the process wetted portion of the probe. The switch responds to any material with a dielectric constant of 1.5 or more by detecting a change in oscillating frequency, and it can be set to detect before contact or on contact with the probe. The CLS200 level switch operates independently of the tank wall or pipe. It does not require an external reference electrode for level detection in a non-conductive vessel such as concrete or plastic.