The RL-35 measures the level of the water surface without contact in a safe position based on a radar runtime measurement. The technology enables automatic, maintenance-free, continuous and high accurate measurements. A highly accurate measuring device to measure the surface water level without direct contact to the medium.

Features

• Measurement range: 15 m resp. 35 m
• Near blanking zone: 0.5 m
• Independent of environmental influences (e.g. temperature, wind)
• Easy integration into existing systems
• Vandalism secure design does not attract attention
• Interfaces: 4 to 20 mA, SDI-12 is available as an option

Measuring principle

The so-called pulse procedure sends a short microwave impulse to the water surface. Afterwards the sensor remains in standby for a short time. Within this time the water reflects the pulses to the integrated evaluation system. The run time of the impulses corresponds directly to the distance to the current surface water level.

• high accuracy: +/- 2 mm (0.006 % of range)
• 35 m measurement range
• analogue resolution
• compact design
• horn radar antenna with 26 GHz (K-band)
• beam angle 10°
• field of application: -40 ... + 80°C
• 4-20 mA / HART output
• 9.6 - 36 VDC supply
• sensor protection type: IP 68 (waterproof until 1 m)
• powder-coated aluminium housing