Designed to inspect the liquid level of Fire Suppression System Cylinders by Ultrasonic Waves. The unique Extension Rod allows the operator to test effectively for multi-bunked Cylinders, reaches 2nd, 3rd and 4th rows deep to make the measurement as quick as possible. The equipment is proven accurate to +/- 1.5mm and significantly safer and quicker solution when compared to weighing as a means of identifying cylinder content. RINA Classification Society Approved. UL-approved. NATO-approved. <Portalevel™ Max Marine>Designed for testing CO2, FM-200TM, NOVEC 1230TM, FE-13, FE-25, NAF S III, CEA410, Halons and a range of other extinguishing agents. With a Mini-Marine Extension Rod enabling the sensor to take measurements of the ships 2nd, 3rd, and 4th banked cylinder rows.<Available in two variants Extension Rod.>*Standard marine Extension Rod – 20mm – ideal for the vast majority of applications and Standard spacing between cylinders *Mini-Extension Rod – 12mm – The compact, lightweight variant at only 14mm wide, able to work on even the most tightly packaged cylinder system