2.1.5 Creep magnitude and minimum dead load output return ()
( Creep, expressed in terms of the load cell verification interval, )
(, expressed in terms of the load cell verification interval, )
Remark: Contrary to the minimum dead load output return in terms of mass the minimum dead load output is expressed in terms of the verification interval, .
From the test indications recorded in Table 6, calculate the difference between the initial indication obtained at the minimum creep test load after the stabilisation period and any indication obtained over the 30 minute test period with the maximum creep test load of 90 % to 100 % of and divide by the conversion factor, .
Remark: If the minimum creep test load or the maximum creep test load differ from or according to 2.1.2 “Load cell errors ” the conversion factor, , must be recalculated with the minimum and maximum creep test loads (see 2.1.2.4).
2.1.5.1
must not exceed 0.7 times the absolute value of the MPE for the maximum creep test load at any time over the 30 minute creep test period.
2.1.5.2
Calculate the difference between the test indications obtained at minutes and minutes after the initial indication at and divide by to obtain the creep error, , in terms of the load cell verification interval, .
2.1.5.3
shall not exceed 0.15 times the absolute value of the MPE for the applied load.
2.1.5.4
Calculate the difference between the initial indication obtained at the minimum creep test load after the stabilisation period () and the indication at the minimum creep test load after the creep test and after a time interval for stabilisation () and divide the result by conversion factor, , to obtain the minimum dead load output return, , in terms of .
2.1.5.5
If the time intervals specified in R 60-2, Table 1 have been met, must not exceed 0.5 .
2.1.5.6
If the actual time is between 100 % and 150 % of the specified time in R 60-2, Table 1, then the following applies:
with
actual time/specified time
2.1.5.7
Whereas expresses the minimum dead load output return in terms of , the value of as used in OIML R 76 [1] is expressed in units of mass (, or ).
2.1.5.8
Calculate the minimum dead load output return, , expressed in units of mass (, or ) as follows:
2.1.5.9
Regardless of the value declared by the manufacturer for the apportionment factor, , the MPE for creep shall be determined from R 60-1, Table 4 using the apportionment factor, (see R 60-1, 5.5.1).