Surface roughness sensor for hot surfaces with RS232 output series D523

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HS Tariff:  9027.50.40.20

ISO-9000 Registered




A machined surface can be analyzed for roughness. The sensor measures roughness from 0.05 to 20 microns.  One light flash is used and the reflected and scattered light is used to calculate roughness. The results of these measurements and calculations for roughness are sent to a PC.  The letters shown on the screen are the following for the measured values:

SCA = scattered light    REF= reflected light    ROU = roughness in micron    TEM = ambient temperature


Technical Data:
Power: Powered from PC or PDA (3.2...5V @ 30 mA)
Materials: Housing = ABS natural   Seal = Sealon PTFE   Screws = stainless steel 301
Roughness formula: see roughness patent
Connection: 9 pole D connector (Palm adaptor available)
Work Distance: 1 mm
Resolution: A number between 0 and 999 within 0.1% accuracy

User Instructions



Like any analytical instrument there are many other things you can do with it.  For instance instead of measuring roughness from a surface it is possible to use this sensor to calibrate to reflectivity. The output from your measurement shows in the Palm and instead of using the calculated data’s from the sensor you can create your own calibration by using the formulas above or other manipulations.



Hohner calibrates the ROU = roughness  with calibration samples in the microprocessor from the sensor.  To recalibrate simply use the calibration samples or your own calibration samples and go with the formula above in your Palm by ignoring the existing coming from the sensor. You always can use the values from the sensor as default. You can calculate the new values  or put the formula in your Palm software.  


Applications for surface roughness:





Processed Food Products

Fuels and Lubricants

Organic Chemistry


Medical and Biology

Water and Sewage

Mineral and Gems

Inorganic Chemistry

Paint Varnish and Glue

Paper and Cellulose

Rubber Industry


Metal and Glass

Imperfections, spots and shine of a surface

Concentration of bacteria

Shine on leaves and flowers

Smoothness and composition of pills and gels

Chocolate, kernel food and waxing

Not Applicable

Measurement can be taken in crystalline form

Contamination for drugs

Skin damage

Not Applicable

Finishing Process

In Crystalline form

Consistency in powder coats and glues

Paper standards for brightness and gloss factors

Rubber gloss

Quality on plasticized materials

Roughness standard for metal and ceramic