Microwave design for moisture measurement with temperature compensation

EP1331476.pdf [100 Kb]

microwave stray field sensor

EP1437588.pdf [105 Kb]

Device and method for measuring a product characteristic with a microwave dispersion range sensor assembly

EP2551679a1.pdf [105 Kb]

A moisture control system for wood pellet production - Good return on invest

For a year now, one of Scandinavia’s largest bioenergy company, Neova AB, has been using the MoistureScan density-independent microwavebased moisture measurement system from Döscher & Döscher GmbH, Germany, to measure the moisture in the raw product.

[Roger Norman [Neova AB], Rainer Otto [Döscher & Döscher GmbH], The Bioenergy international, Issue 1, Page. 43, 2010]

Bioenergy.pdf

In-line Monitoring of Granule Moisture and temperature throughout the entire Fluidized-bed Granulation Process using Microwave Resonance Technology

[Caroline Buschmüller, Prof. Jörg Breitkreutz et.al; PharmInd, 71, Nr. 8, 1403-1408, 2009, Part I + PharmInd, 72, Nr. 9, 2009, Part II]

Moisture Control via microwave
Georg Börste, former MDF production manager Kronospan Chirk [MDF Yearbook 2007-2008, p. 46-48]

To match higher energy and raw material costs in the wood-based panel production industry comes the need for greater process optimisation. One possibility to optimise the production of MDF is through precise moisture measurement.

Article in mdf yearbook 2008 PDF [210 Kb]

In-Line Monitoring of granule moiture in fluidized-bed dryers using microwave resonance technology
Caroline Buschmüller, Institut für Pharmazie und Biopharmazie an der Heinrich-Heine-universität Düsseldorf [ScienceDirect, European Journal of Pharmaceutics and Biopharmaceutics 69 (2008) 380-387]

...Abstract
This is the first report on in-line moisture measurement of pharmaceutical products by microwave resonance technology. In order to meet the FDA´s PAT approach, a microwave resonace sensor appropriate for pharmaceutical use was developed and implemented into two different fluidized-bed dryers. The novel sensor enables a continous moisture measurement independent from product density...

You can order the article by Döscher & Döscher. Get in touch with us info@doescher.com

In-line measurement of granule water content in a fluidized bed dryer using microwave resonance technology as a novel PAT tool
[ Oracle Abstract (Frau Caroline Buschmüller, Pharbil Waltrop GmbH) at the "2nd European Congress on Life Process Technology"; Technopharm, Nürnberg [03/2007]

Introduction - Process analytical technologies (PAT) are to be implemented in modern drug development and manufacturing processes as demanded by the U.S. drug regulatory office FDA [1]. Today, only a few analytical technologies, e. g. nearinfrared spectroscopy (NIR), are available to meet the FDA requirements. The key problem in the drying process of solid particulates, like granules or pellets, is the control of the solvent residuals and in particular, the water content or moisture of the granules...

abstract_03_07.pdf [210 Kb]

A MOISTURE CONTROL SYSTEM for Animal Feed Production
[Feed Compounder, March 2007, S.26-27, by Phil Johnson (Datastor Systems Ltd), sales agent from Döscher & Döscher in the UK]

AT LAST! A moisture control system for animal feed production that really works and delivers a good return on investment. If you were to ask feed mill managers what aspect of their process causes them the most frustration and was the most difficult to control what would the answer be? We have asked and the answer from a sizeable majority of managers was their inability to consistently control finished product moisture effectively. So what are the problems?

Feed Compounder_03_07.pdf [210 Kb]

IOP Publishing - Stray field ring resonators and a novel trough guide resonator for precise microwave moisture and density measurements
[Measurement Science and Technology; 18, S.1061-68]

Abstract: The paper first describes the design and construction of two different kinds of quasi-planar stray field ring resonators for microwave moisture and density measurements, which are typical for the state of the art, and then the practical performance of such sensors....

msat_2007.pdf [810 Kb]

Präzise und schnell - Dichteunabhängige Feuchtemessung mit Mikrowellen
[Verfahrenstechnik 38 / 2004, Nr.3, S.27]

Sorry, only in german available: Verfahrenstechnik_03_2004.pdf [260 Kb]

[Holz- und Kunststoffverarbeitung HK-Sonderdruck,
11 2003]

One of Germany's largest fibre board production plant uses microwave technology to optimise process control.

Combining_Economy_and_Ecology.pdf [198 Kb]

Feuchtemessung mit Mikrowellentechnologie
[GIT 01 / 2003]

Sorry, only in german available: git_01_2003.pdf [46 Kb]

Die Dichte ist egal
[Zeitschrift "PROCESS", Vogel-Verlag, Jahrgang 2002, Nr. 11, S.44-45]

Sorry, only in german available: process_11_2002.pdf [396 Kb]

Microwaves Help to Assure Quality
[Bulk solids handling 05 / 2002]

Hamburg, Germany - Moisture content is an essential product parameter in a number of bulk goods. However, the measurement method needs to fulfil a number of requirements to be usable in practice. A new two-parameter measurement method, the MoistureScan, can now help to fulfil all these requirements at once...

bulk_solids_handling_05_2002.pdf [48 Kb]

Moisture Measurement goes electromagnetic
[Tobacco Journal 05/ 2002]

Moisture measurement with microwaves allows a quick and exact determination of product qualities. AMS, a German manufacturer of quality control equipment, has developed a new technology to avoid the commonly occurring effect of density dependence…

tobacco_journal_05_2002.pdf [151 kb]