TE-BBR Instruction and Operation Manual
Verify Calibration
To verify that the instrument is providing accurate data for force and deflection complete the
procedure outlined in this section.
1. With the instrument in Local and Zero modes, place the gage block in the load frame with the
shaft on the top level of the block.
2. Read the deflection from the computer screen and verify that the value agrees with the
certificate of calibration for the gage block (∆RED) ± TOL.
3. Repeat the previous two steps for the red, white and blue levels.
4. Place the shaft on the red level of the gage block and read the force. The value should be
0.00 ± 10 mN.
5. Remove the gage block from the Load Frame.
6. Adjust the Zero regulator until the shaft is floating freely at the approximate midpoint
in its vertical travel.
7. Gently add a weight of 2 grams to the load platform and verify that the shaft drops slowly
downward under the weight. Refer to Figure 18.
Figure 16: Placing Weight with Forceps
8. Remove the weight and place the quarter inch beam on the beam supports in the bath.
9. Verify that the instrument is in the Zero mode and adjust the Zero regulator until the shaft is
touching the beam with a force of 20 mN ± 10 mN.
10. Add one 2-gram weight (± 0.2 g) to the load platform.
11. Verify that the force increases by 20 mN ± TOL.
12. Add a second 2-gram weight (± 0.2 g) to the load platform.
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