A microwave processing system is disclosed. The system is particularly useful for concurrently controlling a plurality of chemical reactions from a single microwave source. The system comprises a source (15) that produces electromagnetic radiation in the microwave range; a waveguide (16) in communication with the source and into which the source propagates microwave radiation; a resonator (20) in communication with the waveguide; and adjustable dynamic moderating means (22, 33-36) between the waveguide and the resonator for moderating the wave energy passing from the waveguide to the resonator without substantially changing the propagated mode in the waveguide.

Microwave apparatus for controlling power levels in individual multiple cells

A method for microwave assisted chemical processes is disclosed that comprises applying sufficient microwave radiation (26) to a temperature-monitored mixture of reagents (22, 23), with at least one of the reagents (22, 23) being thermally responsive to electromagnetic radiation (26) in the microwave range, and based on the monitored temperature (21), to maintain the added reagents at or closely about a predetermined temperature while substantially avoiding thermal dilution (or before substantial thermal dilution can occur) that otherwise would have been caused by the addition of the reagents to one another.

Microwave assisted chemical processes

In a thermomechanical measuring device and a thermogravimetry device, partition walls are provided in two sections such that two kinds of atmospheric gasses, which have passed a sample chamber and a detector chamber, respectively, do not flow back, and a thermally insulated gas mixing chamber is manufactured anew in the middle of the sample chamber and the detector chamber to make it possible to dilute a reactive gas and a water vapor gas having a high partial pressure. Consequently, it is possible to prevent moisture concentration to reduce an influence of water drops even in a high temperature and high humidity state at the time of humidity control and measurement.

Thermal analyzer with gas mixing chamber

A sample is heated by microwaves, and the temperature of the sample is measured by a radiation pyrometer arranged to receive radiation directly from the sample. The sample is disposed in a chamber having an orifice dimensioned to block the passage of microwaves, and admit the passage of radiation. The chamber has an upper wall in which one or more openings are formed for receiving a sample-containing receptacle.

Apparatus and process for measuring the temperature of a sample heated in a microwave chamber

A reference substance/temperature converter (29) converts a measurement value of a physical characteristic at any time in the temperature of the reference substance (2) at this time. An information concerning the change of the physical characteristic of the reference substance is changed continuously into a temperature detection signal, which registers the sample temperature. An Independent claim is included for: (a) a method for the thermal analysis for the exact measurement of a temperature of a sample with a large diameter

Device for analysis for exact temperature measurement of sample with large diameter has reference substance/temperature converter that converts measurement value of physical characteristic in temperature of reference substance

An apparatus for measuring and monitoring a change in the dimension of a sample being heated by microwave energy is described. The apparatus comprises a microwave heating device for heating a sample by microwave energy, a microwave compatible dilatometer for measuring and monitoring a change in the dimension of the sample being heated by microwave energy without leaking microwaves out of the microwave heating device, and a temperature determination device for measuring and monitoring the temperature of the sample being heated by microwave energy.

Mattison K. Ferber

Papers

Microwave furnace having microwave compatible dilatometer