Inline Microwave Moisture · since 1994

We measure moisture
density-independently.
Inline. Live. Stable.

Microwave measuring systems for bulk goods and web material in industrial production. 600+ installations worldwide. 2-PMR method in cooperation with Prof. Knöchel, CAU Kiel. Family-owned company from Rellingen, Germany.

600+
installations worldwide
1994
family-owned since
±0.3 %
moisture accuracy
140 °C
inline up to

Live resonance

Moisture8.42 % Density763 kg/m³ Temp137.2 °C σ±0.18 %

Trusted & certified

Made in Germany
ATEX Zone 21/22
PTB-traceable
OPC UA · Profibus
CAU Kiel · since 2001
Service worldwide
From the workshop · Rellingen
“We don't measure everything. We measure what the line actually needs — and we measure it right. What doesn't fit our method, we say so.”
JD Jörn Döscher Managing Director · Dipl.-Ing. · Co-author of the 2-PMR method
Frequently asked

Questions industrial buyers typically ask us.

How does density-independent moisture measurement work? +

Microwaves pass through the material. From two resonance parameters (amplitude and phase) the method computes water content and density simultaneously — and removes density. Result: a stable moisture value, independent of material variation.

What does 2-PMR (Two-Parameter Microwave Resonance) mean? +

2-PMR is the resonance method we developed in 2001 together with Prof. Knöchel at CAU Kiel. It is the basis of all our inline systems and density-independent through simultaneous evaluation of two resonance variables.

Can the systems be used at high product temperatures? +

Yes. MoistureScan XT is rated for bulk goods up to 140 °C — typically installed directly downstream of a fiber dryer on an MDF line. For ATEX zones 21/22 there is also the EX variant.

Which interfaces do you support? +

OPC UA, Profibus DP, PROFINET, Modbus TCP, Ethernet/IP, classical 4-20 mA. Calibration is PTB-traceable.

How fast is the inline measurement? +

Sample rate up to 100 Hz. That lets you control the dryer output practically without delay and avoid stop-and-go shifts.

Tell us the measurement task. We'll take it from there.

Material, temperature, line — we respond within one business day with a concrete proposal.

Talk measurement →