Yes, for most granular or powder materials that have a high melting point.

The standard way of measuring their moisture content is to place a sample on a precision weighing balance and place an infrared heater over the sample...

As the moisture is driven out of the sample the weight decreases slowly and then starts to level off as the moisture is reduced to almost zero. From the original weight and the weight loss the moisture content can esily be determined.

These moisture meters are readily available, I think they're called infrared moisture analysers or something....

Hope that helps - John.

Place a sample in an oven and dry it. Cool the sample in a sealed container. Weight differences between the dried sample and an other sample should give water content.

Yes, commercial devices are available, but I dont know current manufacturers.

Back in the mid 1960s, we used a device (in the food industry at Corn Products Research) that basically consisted of a heat lamp shining on a weigh scale to make the measurement. The sample was placed onhing similar could be used for carbon black. the scale and zeroed for tare. The light shown on the sample and the weight was measured automatically by weight difference when the equilibrium was reached. I assume somet

Humidity measurement of dry mixtures is sometimes done with simple and cheap radar equipment where the frequency is correlated to the resonance freq of H2O. Vou have two chambers, one for measurement and one for reference, both radiated by the same source. So differences in intensity are compensated by making a relational evaluation after calibrating the system with a known content of humidity.

This is used par example for determining the water contents of grain before it is milled.

Regards Uwe

When I worked at a steel mill, we had a moisture guage that measured the percent

moisture in the Coke (almost pure carbon) that was in a weigh hopper to determine how much coke was charged, and how much water was in there.

This guage used a nuclear source and measured the backscatter.

That was 6 years ago. I am sure they are still using this at what used to be the

Bethlehem Steel, Burns harbor plant.

Normally a drying scale is used; at our lab (at a carbon black manufacturing plant) we use a Mettler drying scale that uses a halogen lamp. The water content is expressed as a weight loss percentage.

See http://nl.mt.com/mt/filters/products-applications_laboratoriumwegen_halogeen-vochtanalyse/Moisture_Analyzer_0x000010083f6eb48c40005a4b.jsp (we use the left one)

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