PowderJet Dry Feeder

Superior To Tube Feed Systems

In the PowderJet, the sample is fed directly downward from the feeder, moving just a few inches in free fall to the nozzle. This approach prevents powder build-up, clogging and the inconsistent rate of feed normally experienced in systems that use tubing to transport powder horizontally and upward to the sensing zones. The HORIBA technique also simplifies cleaning between samples and, as an enclosed system, prevents sample from escaping.

Easy To Use, Easy To Change Over

Once installed, the PowderJet remains on the analyzers even when switching from wet to dry analyses. Only the sample cell need be changed, a three minute procedure.
Full computer control of powder feed rate and dispersing energy input is achieved via simple point-and-click icons on the familiar Windows* operator interface.

Great dry dispersion

The PowderJet uses a high-speed jet nozzle to disperse the test sample. A vacuum unit collects the sample while pressurized air creates a high shear difference that forces cohesive particles to disperse.
This superior dispersion method yields precise measerement results similar to those achieved with wet methods, It also shortens the time required for measurement considerably, since no sample preparation is required.

Comparison of dry and wet measurement results
It takes 2 minutes and 20 seconds to measure alumina particles with the wet method, including ultrasonic dispersion. The same measurement takes only 30 seconds with the dry method. What's more, the dry method measurement results are as precise as those obtained by the wet method.

Measurement without forced dispersion in the same unit

The PowderJet can measure fragile granular test samples without breaking them, using a special optional cell that requires no pressurized airflow.

For cell
The test sample falls the few centimeters from the test sample cup to the nozzle directly. As a result, unlike with horizontal or vertical feed tubes, there are no problems with clogging during measurement and no need for cleaning between samples.