Unitel: Part no. 72527
Unitel measures the hydrostatic liquid pressure at the tank bottom. The pressure varies according to liquid height and specific gravity of the medium to be measured. The pressure is measured approx. 20 mm above the tank bottom and displayed on the gauge dial.
When operating the pump of the Unitel a pneumatic pressure is built up in the capillary measuring line until that pressure is equal to the liquid head pressure at the bottom of the tank. The pressure created by the pump has displaced the liquid in the capillary tubing inside the tank and the air bubbles out of the end of the standpipe in the tank. The pointer has reached its highest indication point and stops at that level.
Unitel enables the user to obtain a relatively accurate consumption control thereby allowing a timely reordering of fuel. The driver of the oil delivery vehicle can use Unitel to check whether the tank can accept the ordered quantity of fuel.
Measuring range: fully adjustable: 900-3000 mm tank height for measurement of fuel oil EL or diesel fuel with an average density of 840 kg/m³.
Unitel for water: Part no. 72511
Measuring range: Fully adjustable: 900-2500 mm tank height.
Unitop:
Unitop measures the hydrostatic liquid pressure at the tank bottom. The pressure varies according to liquid height and specific gravity of the medium to be measured. The pressure is measured approx. 20 mm above the tank bottom and displayed on the gauge dial. When operating the pump of the Unitop a pneumatic pressure is built up in the capillary measuring line until that pressure is equal to the liquid head pressure at the bottom of the tank. The pressure created by the pump has displaced the liquid in the capillary tubing inside the tank and the air bubbles out of the end of the standpipe in the tank. The pointer has reached its highest indication point and stops at that level. 
Unitop enables the user to obtain a relatively accurate consumption control thereby allowing a timely reordering of fuel. The driver of the oil delivery vehicle can use Unitop to check whether the tank can accept the ordered quantity of fuel.
Measuring Range: fully adjustable, for measurement of fuel oil EL or diesel fuel with an average density of 840 kg/m³
Unitop 1200: Part no. 28100: 700-1200 mm tank height
Unitop 3000: Part no. 28000: 900-3000 mm tank height
Unitop 4000: Part no. 28200: 3000-4000 mm tank height
Unitop 2500 for water: Part no. 28002
Measuring range: 900-3000 mm tank height for liquids with a density of 1g/cm3 (water).
Unitop-Set AdBlue: Part no. 28040
AdBlue is identical to NOx-reduction material AUS 32 and urea solution 32.5%.
Measuring range: fully adjustable over a tank height from 700-2300 mm for AdBlue specific gravity of 1.09 g/cm3.