Particulate Systems MA-1040, Operator'S Manual, Page: 14 / 16

Performing the Analysis MA-1040 Magnetic Analyzer
8 May 2011
Performing the Analysis
After your sample has been weighed and the weight recorded, you can start the analysis.
1. With the sample chamber empty, adjust the ZERO control to 000.0.
2. Adjust the WEIGHT-GRAMS control to the recorded weight of the sample.
3. Insert the sample holder containing the sample into the sample chamber.
Within a few seconds, the relative percentage of magnetic material in the sample is displayed;
record this value. The displayed value is accurate for about three to five seconds, after which time
the display may drift.
4. Remove and empty the sample holder. Place the empty sample holder back into the sample
chamber and record the reading shown on the display. Subtract this value from the reading
obtained when the sample holder contained sample (step 3). This is the actual percentage (in ppm)
of magnetic material contained in the sample.
5. Remove the sample holder from the sample chamber.
Because the empty sample holder reading is usually negative, the true reading
is obtained by simply adding the absolute value of the empty sample holder
reading to the reading of the holder with sample (step 3).
When not in use, do not store the sample holder in the sample chamber.