Metrix+ Surftest 10 Surface Roughness Tester Ra Rz Portable Profilometer
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A. Product Overview
The Metrix Plus Surfprof 09 is a surface profile gauge designed for checking the profile depth created after abrasive blasting or similar surface preparation processes.
Before applying a protective coating, the surface is often blast cleaned to create a controlled roughness or anchor profile. The Surfprof 09 measures the peak to valley distance of this prepared surface so inspectors can verify whether the profile is within the required range.
Key Specifications
Specification | Details |
Model | Metrix Plus Surfprof 09 |
Product Type | Digital Surface Profile Gauge |
Measuring Range | 0 to 800 micrometers |
Accuracy | Plus or minus 5 percent or plus or minus 5 micrometers, whichever is greater |
Resolution below 100 micrometers | 0.1 micrometer |
Resolution from 100 to 800 micrometers | 1 micrometer |
Sensor | Tungsten carbide probe tip |
Measuring Principle | Inductance type |
Probe Type | Flexible cable probe |
Probe Tip Life | Up to approximately 20,000 readings |
Power | Four 1.5 V AAA batteries |
Operating Temperature | 0 to 50 degrees Celsius |
Operating Humidity | Less than 80 percent RH |
Dimensions | 126 by 65 by 28 mm |
Optional Feature | PC interface for real time data logging |
The manufacturer states that the tungsten carbide probe tip can last for up to approximately 20,000 readings and can be replaced by the user in the field.
Applicable Standards
The Surfprof 09 is specified for use with several surface profile testing standards, including:
B. Working Principle
The Surfprof 09 works like a digital depth micrometer with a precision probe tip.
The instrument uses a tough tungsten carbide tip that is pressed against the blast cleaned surface. The tip follows the difference between the peaks and valleys created during surface preparation.
The gauge then determines the vertical distance between the high and low points and displays this value as the surface profile height.
Basic Measurement Process
Ensure that the blast cleaned surface is free from loose dust and debris.
Position the Surfprof 09 probe perpendicular to the test surface.
Place the probe firmly against the prepared surface.
The tungsten carbide tip measures the depth between the surface peaks and valleys.
Read the resulting surface profile value on the instrument display.
Repeat the measurement at multiple positions where required.
Use the average value function when several measurements are needed to evaluate the overall surface profile.
This method provides a direct measurement of blast profile depth rather than measuring general surface roughness parameters such as Ra.
C. Why Is the Surfprof 09 Used?
Surface profile is an important factor in the performance of protective coatings.
A blast cleaned surface needs enough profile to provide an effective mechanical key for the coating, but the profile should not be excessively deep.
According to the manufacturer, if the surface profile is too large, additional coating may be required to cover the profile peaks properly. If the peaks are not adequately covered, localized rusting can develop.
If the surface profile is too small, there may not be enough mechanical key for proper coating adhesion, which can contribute to premature coating failure.
The Surfprof 09 therefore helps users verify that surface preparation is within the required range before applying paint or another protective coating.
Typical Uses
Abrasive blast profile measurement
Sand blasted surface inspection
Shot blasted surface inspection
Steel surface preparation inspection
Peak to valley profile measurement
Coating preparation quality control
Paint preparation inspection
Corrosion protection inspection
Surface preparation verification
Fabrication quality control
Coating adhesion preparation checks
Industrial maintenance inspection
Why Surface Profile Measurement Matters
Correct surface profile can help with:
Proper coating adhesion
Optimized coating performance
Better corrosion protection
Correct coating consumption
Reduced risk of uncovered profile peaks
Improved surface preparation consistency
Verification against coating specifications
The manufacturer specifically notes that surface profile measurement is an important factor in achieving optimum coating performance and efficient material usage.
D. Suitable Buyers
The Metrix Plus Surfprof 09 Surface Profile Gauge is suitable for professionals involved in abrasive blasting, surface preparation, coating application and quality inspection.
Typical buyers include:
Coating inspectors
Painting contractors
Sand blasting contractors
Shot blasting companies
Steel fabrication companies
Automotive manufacturers
Automotive component manufacturers
Metal forming industries
Forging companies
Casting and foundry industries
Shipyards
Marine coating contractors
Industrial maintenance companies
Corrosion protection contractors
Quality control departments
Quality assurance departments
NDT inspection companies
Testing laboratories
Structural steel manufacturers
Heavy engineering companies
Industrial equipment manufacturers
Metrix Plus specifically identifies industries including automotive, metal forming, forging and casting as suitable applications where coatings are applied over blast cleaned surfaces.
Frequently Asked Questions
1. What is the Metrix Plus Surfprof 09?
The Metrix Plus Surfprof 09 is a digital surface profile gauge used to measure the peak to valley height of blast cleaned surfaces before coating application.
2. What is the measuring range of Surfprof 09?
The instrument has a measuring range of 0 to 800 micrometers.
3. What does a surface profile gauge measure?
A surface profile gauge measures the vertical distance between the peaks and valleys created on a surface by abrasive blasting or other surface preparation methods.
4. Is Surfprof 09 a blast profile meter?
Yes. It is specifically designed to measure the profile height of blast cleaned surfaces, so it can be used as a digital blast profile meter.
5. What type of probe does Surfprof 09 use?
It uses a flexible probe with a tungsten carbide probe tip.
6. Why is tungsten carbide used for the probe tip?
Tungsten carbide provides good wear resistance for repeated surface measurements. Metrix Plus specifies a probe tip life of up to approximately 20,000 readings, with field replacement possible.
7. What is the accuracy of Surfprof 09?
The specified accuracy is plus or minus 5 percent or plus or minus 5 micrometers, whichever is greater.
8. What is the resolution of the Surfprof 09?
Resolution is 0.1 micrometer below 100 micrometers and 1 micrometer from 100 to 800 micrometers.
9. Does Surfprof 09 comply with ASTM D4417?
Yes. The manufacturer lists ASTM D4417 Method B among the applicable standards.
10. What is ASTM D4417 Method B?
ASTM D4417 Method B covers direct measurement of blast cleaned surface profile using a depth micrometer type instrument. Surfprof 09 is specified by Metrix Plus for this measurement approach.
11. Can Surfprof 09 be used before painting?
Yes. One of its main purposes is to verify surface preparation before applying protective paint or coating.
12. Why should blast profile be measured before coating?
The surface profile influences coating adhesion, coating coverage and long term coating performance. A profile that is too high can require more coating, while a profile that is too low may provide insufficient mechanical key.
13. What happens if the blast profile is too high?
An excessively deep profile may require additional coating to properly cover the peaks. If the peaks remain inadequately coated, corrosion or rust spots may develop.