The patent-pending RU Flex 2100 DLS is a flexible, extremely rugged, chemically and abrasion resistant digital level sensor offering continuous, accurate, and reliable monitoring of tank level and temperature. With the 36” flexible diameter, one person can install the sensor in 15 minutes. Increased measurement accuracy (3/16″ when ordered with 1/8″ resolution) makes this sensor ready for API 18.2 custody transfer level measurement requirements.


Reliable— No Ongoing Calibration

After installing the sensor hardware and setting the initial level offset, these sensors require no additional calibration. All electronics, with the exception of those in the sensor housing, are sealed inside the sensor tube. The apparatus is intrinsically safe (when used with a qualified intrinsically Safe Barrier, such as Electrolab’s 2110 Barrier Unit) or explosion-proof when used with the Explosion-Proof Housing (Model 2110EX). The RU Flex 2100 DLS offers low power consumption and is virtually maintenance free.

Flexible hose allows for ease of shipment and storage

API 18.2 Custody Transfer compatible

Stainless steel parts treated with e9 Treatments Metal Pro anitparaffin solution for minimal maintenance

Lightweight and flexible design allows for one person installation

Measure and monitor up to eight levels or temperatures

More Versatile and Reliable than Guided-Wave Radar

Electrolab’s RU Flex 2100 DLS offers greater versatility, flexibility, and more robust features than conventional guided-wave radar (GWR) level sensors. A dual float sensor measures multiple fluid levels and temperature measurements through a SINGLE TANK PORT, eliminating the need for multiple sensors in one tank. To accomplish these same measurement and alarm protections, GWR requires two separate ports in a tank. This single device can also read up to eight distinct temperature measurements.

Unlike radar, this sensor is not affected by electro-mechanical interference, tank turbulence or changing environmental variables. Simply install the sensor, set your initial level offset and the RU Flex 2100 DLS is ready to monitor your tank. Under normal operating conditions, no additional calibration is needed—EVER. Ongoing maintenance is practically non-existent. The naturally oleophobic non-stick nature of the RU Flex hose helps ensure ongoing measurement accuracy by preventing paraffin and other pollutants from building up on the sensor. Cleaning of the RU Flex 2100 DLS is rarely necessary.