Technology for Environmental Protection - Measuring. Controlling. Monitoring.
Level sensor GWG with metallised sleeve
Maximum safety for the filling of tank facilities

Progress in the area of safe storage of fuel oil has always been a key focus of AFRISO; the company has contributed significant ideas and groundbreaking products to the development of this market. Protective sleeves with a metallised surface for level sensors are yet another AFRISO innovation.

Level sensor GWG with metallised sleeve
With the GWG level sensors with metallised sleeve, AFRISO offers maximum safety for the filling of tank facilities. Example: Left image GWG 12 K/1C and GWG 12 K/1 for indoor tanks, the right picture shows a zoomed image of the metallised sleeve.
With the GWG level sensors with metallised sleeve, AFRISO offers maximum safety for the filling of tank facilities. In the case of conventional level sensors, a plastic sleeve provides mechanical protection of the PTC thermistor. The sleeve is open at the bottom and has a slot at the side so that the fuel oil can easily reach the PTC thermistor. However, the openings of the sleeve may get clogged due to the growth of microorganisms (such as bacteria and fungi) and an air cushion is created which prevents the fuel oil from reaching the PTC thermistor.

The rise in the use of biofuel with a certain percentage of FAME (fatty acid methyl ester) increases this risk. The higher the FAME content, the greater the water content in biofuels.This creates an environment even more susceptible to the growth of microorganisms. This may cause the level sensor to malfunction and ultimately cause damage due to overfilling.

For fuel oil EL (DIN 51603), diesel fuel (EN 590), FAME 100 % as biofuel (EN 14213) and biodiesel (EN 14214), AFRISO offers a complete range of GWG level sensors with metallised sleeves for indoor tanks (approval of the German Institute for Building technology: Z-65.17-182) and outdoor tanks (approval of the German Institute for Building technology: Z-65.17-366). The level sensors GWG 12 K/1, 12 K1/5, 12 K/1C and 12 K/MT are PROOFED BARRIER-certified and odour-tight.