RLS-C21

Radar level sensor

The RLS-C21 is the ideal sensor for all applications in water and sewage water applications. It is particularly appropriate for applications where high accuracy is required. It achieves excellent signal focusing.

The RLS-C21 radar level sensor is suitable for use in pump stations and storm water overflow tanks, for flow measurement in open flumes as well as for gauge measurement for water processing.

Measurement principle

The RLS-C21 emits extremely short microwave pulses, thanks to the antenna system, in the direction of the measured product, reflected by the product surface and received back again by the antenna system. They propagate at the speed of light. The time from emission to reception of the signals is proportional to the distance between the sensor and the water.

A special time stretching procedure allows reliable and precise measurement of the extremely short signal running times. Maintenance-free operation due to non-contact 80 GHz radar technology.

The IP68 protection rating of the instrument allows outdoor mounting.

The RLS-C21 is compatible with these loggers and monitors:

IFQ MONITOR 1.5
IFQ LOGGER / RTQ-IoT (with RAV-0090 connector)

Non-contact 80 GHz radar level measurement technology
Designed for continuous level measurement of liquids and bulk solids
Measuring range up to 20 m (application dependent)
High measurement accuracy of ±2 mm
Maintenance-free operation due to non-contact measurement principle
Accurate readings regardless of:
- Product properties
- Process conditions
- Environmental conditions
Narrow 8° beam angle for use in confined spaces and difficult installations
Rugged enclosure with IP68 protection rating
Operating temperature range: −40 °C to +80 °C
Process pressure range: −1 to +3 bar
4–20 mA output
Optional hazardous-area (Ex) approvals available
Configuration and diagnostics via:
- PC with PACTware/DTM
- Smartphone or tablet via Bluetooth