Special Applications with Intelligent Manometers

Consumption Meter
Content- and Consumption Calculation

The Intelligent Manometer measures the pressure created by the liquid level. The contents of the vessel as a function of the specific gravity and as a function of the shape of the vessel are programmed into the instrument. The consumption meter indicates the content in litres and calculates the daily, weekly or monthly consumption and displays the estimated time when the vessel will be empty at present rate of consumption.
 
Mano SF6
Density of Gases

High voltage switches in power stations are filled with SF6-gas. Leakage of gas can lead to serious damage to the switches. Mano SF6 calculates the density of the gas by measuring the pressure and the temperature and calculates the density to a very high accuracy. Tracing past measurements over a long time period, Mano SF6 calculates the leakage and makes an exact prognosis when the switch must be refilled with new gas.
 
Density Gauge
Density of Liquids / Content Gauge

Two pressure transducers are immersed in the vessel at a known distance apart. The density can be calculated from the pressure difference. The accuracy depends on the distance apart. At 25 cm, an accuracy of 0,5% can be achieved. This distance can be programmed into the instrument in the field. "Auto-Zero", when out of the liquid, eliminates the zero stability errors. Knowing the distance to the bottom of the vessel, the contents are computed from the density and the pressure.
   
Mano CO2
CO2-Percentage in Drinks

CO2 keeps soft drinks, beer or champagne fresh. A lack of CO2 makes them flat and tasteless. Mano CO2 allows evaluation of the CO2-content in a quick test in pubs or restaurants. About 0,5 litres of the drink are added into a holder, the holder is then sealed and shaken for 10 seconds. The CO2-fizz from the drink increases the pressure in the holder. After one minute, an equilibrium pressure is reached, and a calculation of the CO2-content can be made.


For further information please contact your nearest KELLER sales person.