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Digital Microwave Moisture Measurement for Concrete, Asphalt and Process Industries from Hydronix

The Hydro-Mix is a digital moisture sensor that has been designed to fit flush with the floor of a mixer or conveyor. It will accurately measure moisture content of the material at 25 times per second as it passes across the ceramic face plate during processing.

Hydro-Mix Microwave Moisture Sensor for Mixers

Digital Technology

Digital technology provides precise, linear moisture measurement.

Advanced Digital Signal Processing

The sensor response may be adjusted remotely using the Hydro-Com software to minimise the effects of noise of the measured signal. Advanced Digital Signal Processing provides a clear signal with a rapid response.

Measurement Modes

Choice of measurement modes for optimising sensor performance in a variety of applications and material types.

Fully Temperature Compensated Measurement

The sensor internally adjusts for mechanical changes due to temperature fluctuations

Easy to Interface

Two analogue outputs and digital RS485 communications and configurable digital inputs / output make the sensor simple to integrate into a control system.

Measuring in the Mix

Measuring at 25 times per second the sensor continuously detects changes in the moisture of the materials throughout processing.

Temperature Measurement

Temperature output is available to provide a readout of material temperature.

Replaceable Ceramic Faceplate

Easily replaceable on site or by a Hydronix approved reseller, this is a fast and cost effective solution to minimise downtime and the inconvenience of a return to base repair.

Wear Life

The ceramic faceplate and steel protection ring are the only parts exposed to wear when installed. Under normal use and regular maintenance, the sensor will last for many years.

Accuracy of Measurement

All measurements may, if required, be calibrated to an accuracy of +/- 0.2%. If used to reach a target the accuracy can be better than 0.1%

Sensor Configuration

The Hydro-Mix can be remotely configured using Hydro-Com diagnostic software. All readings and sensor parameters are available including the type of output and filtering characteristics.


The sensor may be internally calibrated using the Hydro-Com software, or the linear output may be calibrated within the control system or by use of the Hydronix Hydro-View calibration unit.

Simple Power Requirements

The Hydro-Mix may be powered from a 15-30V dc supply. Multiple sensors may be driven from a single power source.