1.

It is important to know what exactly is meant by "not measuring properly". Is it drift? Is the constant not right? Is it noise? The best way to narrow down the possibilities is to take a step by step approach to the problem.
 

2.

Confirm that your system is properly installed, both mechanically and electronically (see Technical Note 1.1 for proper grounding instructions).
 

3.

Follow "Checking the Electronics of the Reliadens" technical note. If all of those items are OK, continue with step #5.
 

4.

Now that the mechanical and electronic questions have been addressed, it is time to compile some data so we can see exactly what we are dealing with.
 

5.

You need to gather at least 10 sets of data. Compare the Reliadens to a proven manual method. These are some tips to make the comparison as accurate as possible.
 

6.

Do not change the manual method or person doing the test part way through. This will only introduce more variables.
 

7.

When doing the test, compare product taken at the same time and at the same place.
 

8.

The manual testing method should use a similar size and shape of container and capture the product in the same free fall area.
 

9.

Timing is very important. Many products settle or flash off moisture very rapidly. Make sure the manual method takes no more or less time to measure than the Reliadens method.
 

10.

Leave the manual sample vessel in the product stream for the same amount of time as the Reliadens cup.
 

11.

Level off the manual sample vessel the same way every time.
 

12.

Measure the sample immediately following the capture and leveling off of the sample.
 

13.

To check the repeatability of the manual test, have 2 or 3 different people run a test using the exact same method.
 

14.

After the tests are completed, send this data back to III Sigma.