ASM 925 DCOF Meter Operator Instructions
925 Kit Contents
925 DCOF meter
Test foot with SBR material attached (2 included)
Test foot cleaning brush
Sand Paper
Two 9 volt batteries installed
32 g micro SD card in SD adapter
SlS vials w/ 13ml Sodium Laurel Sulfate each, w/ MSDS sheet
Cloth specimen bag for accessories
Reference surface to verify meter
Carrying case w/ wheels
925 Testing Method
The 925 is a motorized drag sled. There is an internal weight with a test foot that is attached
and is pulled internally with a load cell measuring the forces. As the downward vertical motion
is started, the test foot starts forward as contact is being made. The sled is pulled forward in a
sliding dynamic motion. The processor gathers the force data, calculates into a DCOF value,
does this with 100 points over the run and calculates the average to be displayed.
Getting Started
Remove the meter from the case. The two 9 volt batteries are installed at the factory. Prior to
installing the test foot, for a first time user it is recommended to push the meter down a couple
of times just to get a feel for how to press down smoothly. One does not have to press down
overly fast or with excessive force. Just a nice smooth motion to the meter stops going down.
There are 2 stops on the bottom so the meter is depressed to the same position each time.
Prior to installing the test foot, run a pass to verify the unit is working properly and
there is not a drive problem.
1) Turn the meter on with the power switch on the top. Press 1 to continue or 2 to
edit the time and date. If changing the time and date, follow the on screen prompts
after 2 to edit.
2) Select 1 for a single pass.
3) Press 1 to start.
4) Press 1 to continue.
5) Press 1 again to continue.
6) Push the meter down and hold until the test is complete and the display reads “Done Lift
Meter” Should read DCOF = 0.000
7) Press C to repeat. Run another cycle if you would like to practice or feel the meter run again.