Hirschmann PRS 40 EZ, Руководство оператора и по обслуживанию

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LOADCELL
© PRS 40 EZ REV A 03/16/06 190201_A
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8.1.5.A ACCURACY AND TEST REQUIREMENTS
Check the load display by lifting a load of known weight. The accuracy of the load indication shall be
within the tolerance of SAE J376, refer to complete SAE standard before testing.
Accuracy
The accuracy of the load indicating system is to be such that the indicated load is not less than 100%
of the actual load, nor more than 110% of the actual load. Where the system cannot meet the
accuracy criteria at the lower load range, conspicuous labeling or signaling is to be provided indicating
that these accuracy criteria cannot be met.
The weight of the load being lifted and all additional equipment such as blocks, slings, sensors, etc.;
also referred to as working load.
Test Requirements
System tests are to be conducted using an appropriate configured crane and specified load rating
chart.
For system calibration, three or more test radii or boom angle are to be employed to establish
compliance with the accuracy section above. Test loads shall be as near as is practical to minimum,
mean, and maximum values within the operating limits.
One of the following test methods or equivalent is to be used:
Known Weight
Test load to be applied by suspending known weights accurate to ± 1%. If the weights of all
additional equipment such as blocks, slings, sensors, etc., are included in the test load, the total
load is to be known to an accuracy of ± 1%.
Fixed Anchor (Deadman)
Test load to be applied by hoisting against a fixed anchor or deadman equipped with a means for
measuring loads accurate to ± 1%. If the weights of all additional equipment such as blocks,
slings, sensors, etc., are included in the test load, the total load is to be known to an accuracy of ±
1%.
The system accuracy is to be determined from the following formula:
Indicated Load x 100 = % of Load
Actual Load