2.1.2.1

Complete a Table 1 for each test temperature, calculate the averages and record in the right-hand column. When five runs are necessary, use Table 2.

2.1.2.2

Determine the conversion factor, , which is the number of indicated units per load cell verification interval, , and is used to convert all “indicated units” to “”. It is determined from the test data averages of the increasing load tests at the initial nominal test temperature.

2.1.2.3

If a test load corresponding to 75 % of the measuring range for the load cell under test (i.e. divisions for a division cell, which is plus 75 % of the difference between and ) is not included in the test loads used in Table 1, interpolate between the adjacent upper and lower values of the averages of all three test runs and record in Table 3 (see R 60-2, 2.8.2).

2.1.2.4

Calculate the difference between the average indication on the increasing load test runs at 75 % of the difference between and and the indication at . Divide the result (to five significant figures) by the number of verification intervals (75 % of ) for that load to obtain the conversion factor, , and record in the tables that follow.

The units of conversion factor, , are indicated units (e.g. digits or counts) per load cell verification interval, .

2.1.2.5

Enter the average test indications of the tests at the temperatures following the initial test at a nominal in Table 3. In recording this data, indicate a “no test load” indication (at ) as “0”. This may require subtracting the “no load indication at ” from the “test load indication” so that the first entry in the column is “0”. These “0’s” have been preprinted on the form to clarify that a dead load condition is recorded as “0”.

2.1.2.6

Calculate the reference indication, , by converting the net test load, in mass units, to indicated units (e.g. counts or digits), by multiplying by the conversion factor, , for each test load and recording in the 2nd column in Table 3.

2.1.2.7

In Table 3 calculate the difference between the average test indication and the reference indication for each test load at each test temperature and divide the result by the conversion factor, , to obtain the error, , for each test load in terms of .

2.1.2.8

Compare with the corresponding MPE for each test load.