Gravimetric moisture-determination instrument with an air duct for cooling
AssigneeMettler-Toledo AG
InventorNeil Olesen
Life of this patent
Estimating the term…
Abstract
A measuring instrument (1) for gravimetric moisture determination consists of an instrument housing (2), a balance (3) installed in the instrument housing, and a radiant heater (8). The moisture content of a sample on a tray placed on the tray carrier (5) is determined by measuring the weight loss of the sample while it is being dried under the heater. The instrument is equipped with means for conducting an air stream generated by a fan (12) through the space between the sample tray carrier (5) and the weighing cell (21). The air-conducting means include an air duct that can be at least partially released from the instrument housing for cleaning.
Claims7
A measuring instrument for gravimetrically determining a moisture content of a sample, comprising an instrument housing, a balance with a weighing cell installed in the instrument housing, a tray carrier mounted on the weighing cell to hold a sample on a sample tray, a source of radiant heat arranged above the sample tray, and means for conducting a stream of air between the sample tray and the weighing cell, said means comprising an air duct;
- said radiant heat drying the sample and thereby causing the latter to lose weight;
- the balance being operable to monitor said weight loss and to therefrom determine the moisture content of the sample;
- wherein the means for conducting the air stream are configured to allow at least a part of the air duct to be released from the instrument housing for the purpose of cleaning the air duct.
Dependencies are inferred from the claim text.