OHAUS Valor 2000 Service Manual

Also see for CS 2000: User guide Instruction manual Operating manual Operating manual Operating manual

CHAPTER 4 TESTINGValor™ 2000 Series Service Manual 4-3 Ohaus Corporation www.ohaus.com4.4.2 Repeatability TestRepeatability 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:Enter the menu and adjust and record the following settings:A. Set the Filter level to medium or the center of its range.B. Set the AZT (Auto Zero Tracking) to .5d or its lowest setting. Do not turn it off.C. Set the instrument to display the same units as the performance specifications.Record Settings:Filter Level Setting = ____________Auto Zero Tracking Setting = ____________Displayed Units = ____________Mass Used = ____________TEST PROCEDURE:1. Zero the instrument.2. Using a test mass approximately half the capacity of the instrument, place the mass onthe 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 readingsFill in the worksheet (Table 4-2) with the ten (10) readings.