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

The Hydro-Mix XT-EX has been designed to measure moisture in flowing bulk solids such as animal feed, grain, rice, pulses and also in liquids. The sensor can be easily installed in ducting, conveying and mixing systems. It is suitable for Zone 20 process environments (Zone 21 external to process). Certified for use in ATEX, IECEx and NEC/CSA Hazardous Locations (Dust).

Brief details for mounting the Hydro-Mix XT-EX sensor in different types of mixer can be found below, and full details regarding both installation and calibration can be found in the User Guide.

Hydro-Mix XT-EX surface installation


The electrical cable of this sensor has to be terminated outside of the protected area or within a suitable housing that complies with the relevant protection zone. All connections within the protection zone must be made with the power supply isolated.

Typical Installation into Mixers, Conveyors and Dryer Outlets

The Hydro-Mix XT-EX can be mounted in many different locations where there is a continuous flow of material across the ceramic faceplate. These include hoppers, ducting, conveyors and mixer systems.

Static Pan Mixers

Hydro-Mix Sensor in a Turbo Mixer

The sensor is mounted in the base of the mixer.

Single / Twin Shaft Mixers

Hydro-Mix XT Moisture Sensor in a single and twin shaft mixer

The Hydro-Mix XT-EX should ideally be positioned on the end wall of the mixer, 30° from vertical and on the upstroke of the blade.

Ducting Systems

Moisture sensor in ducting

The sensor is installed in ducting so that the sensing surface is flush mounted with the internal wall. There should always be an overflow of material through the ducting to ensure a consistent material flow.

Screw Conveyors

Moisture sensor in screw conveyor

The Hydro-Mix XT-EX is positioned on the upstroke of the blade at 30° from vertical.