OHAUS Valor 1000W, Руководство по обслуживанию

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CHAPTER 4 TESTING
Valor
™ 1000W Series Service Manual
4-3 Ohaus Corporation www.ohaus.com
4.4.2 Repeatability Test
Repeatability is the Standard Deviation of a set of similar weight readings.
Requirements:
– To perform this test a single mass must be used for all readings.
– The test mass should be approximately ½ of the capacity of the instrument.
– Wear gloves when handling the mass.
Before starting a repeatability test, set up the instrument as follows:
Set Up:
Follow the steps in Appendix A, Section A-2, Setup and Calibration.
Record Settings:
Zero Tracking Setting = ____________
Displayed Units = ____________
Mass Used = ____________
TEST PROCEDURE:
1. Zero the instrument, if it does not read zero.
2. Using a test mass approximately half the capacity of the instrument, place the mass on
the center of platform. Record the reading on the worksheet provided.
3. Remove the mass from the platform.
4. Repeat this test starting at Step 1 until you record a total of ten readings
Fill in the worksheet (Table 4-2) with the ten (10) readings.