Rice Lake Scout Pro Series Portable, Ohaus - Service Manual - Manual (Page 22)

4-4
CHAPTER 4 TESTING
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4.2.3 Linearity Test (Cont.)
Test (Cont.)
5. Place the test mass on the balance, record the weight and then remove.
6. Place Load 3 on the balance and press the ON/ZERO/Off button.
7. Place the test mass on the balance, record the weight and then remove.
8. Place Load 4 on the balance and press the ON/ZERO/Off button.
9. Place the test mass on the balance, record the weight and then remove.
10.The difference in the weights of the test mass should be within the tolerance in table 4.1.
If not, perform a linearity calibration, see Appendix B and do the test again.
4.3 Down Stop Adjustment
When the balance fails the Off-Center Load test and or the Linearity test, the Transducer may require
checking and adjusting of the down stop. To make adjustments, the Transducer must be removed from
the balance. Perform procedures 3.1.1 and 3.1.3 and remove the Transducer from the balance.
NOTE: This procedure will require feeler gauges ranging from 0.40mm/0.16in. to 0.65mm/0.026in.
Checking and adjusting the down stop.
1. Place masses equaling mass 1 as indicated in Table 4-3 on the platform. You should still
be able to feel some movement with a slight downward push.
2. Place masses equaling mass 2 as indicated in Table 4-3 on the platform. You should feel
no movement with a slight downward push.
3. If the above conditions are not met , adjust the screws on the base plate using the data in
Table 4-4. See Figure 4-2 for location of adjustment screws.
Figure 4-2. Transducer Front View - Down Stop Adjustment Screws
CLEARANCE CLEARANCE
DOWN STOP
ADJUSTING SCREW DOWN STOP
ADJUSTING SCREW