TB 9-6695-301-50
Table 1. Calibration Description - Continued
Test instrument
Performance
parameters
specifications
Load cells
Range: 0 to 2000 lbs
0 to 5000 lbs
0 to 20,000 lbs
0 to 60,000 lbs
Accuracy: 0.07% of FS2
cells with range not specifically listed in table 1 may be calibrated, using the appropriate procedure
and applicable range limits listed in table 3. Accuracy must conform to the applicable accuracy listed in table 1.
2 TI load cells are directly verified against the standard load cells to 0.05% of FS another 0.02% of FS systemic error is
added for a system accuracy of 0.07% of FS.
EQUIPMENT REQUIREMENTS
4. Equipment
Required. Table 2
identifies the
specific equipment to be
used in this
calibration procedure. This equipment is issued with Secondary Reference Calibration
Standard Set. Alternate items may be used by the calibrating activity. The items selected
must be verified to perform satisfactorily prior to use and must bear evidence of current
calibration. The equipment must meet or exceed the minimum use specifications listed in
table 2. The
accuracies listed in
table 2 provide a
four-to-one ratio between the
standard
and TI. Where the four-to-one ratio cannot be met, the actual accuracy of the equipment
selected is shown in parenthesis.
5. Accessories Required. Common usage accessories are not
listed in this
calibration
procedure. Peculiar accessories required are: Transfer Load Cell Calibration Spreadsheet
(TLCCS.xls) and the MGCplus Assistant software.
Table 2. Minimum Specifications of
Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
LOAD CELL
Range: 0 to 2000 lbs
Revere Corp., Model USP1-
2B (MIS-26331TY1);
0 to 5000 lbs
USP1-5B (MIS-26331TY2)
0 to 20,000 lbs
USP1-20B (MIS-26331TY3),
0 to 60,000 lbs
and Toroid Corp., Model 35-
Accuracy: 0.04% of full-scale.
133BCF60K (MIS-26331TY4)
LOAD CELL INDICATOR
Range: 0.1-3.06 mV/V
DMP40S2
Accuracy: .0001 mV/V
Range: 0 to 60 in-lb
CDI, Model 60 STPI (7915975)
KIT NO. 1
(0 to 5 ft-lb)
(0 to 960 in-oz)
Effective length of 2.5-in. hex drive
to 1/4-in. male square adapter
Accuracy: 0.25% of load