OHAUS FD SERIES Service Manual

Also see for FD Series: Instruction manual User guide Quick start guide

Contents

OHAUS FD SERIES Service Manual Manual pdf 29 page image

3-13CHAPTER 3 SCALE TESTING AND CALIBRATION3.8 CALIBRATIONNNNNNOTE: Before calibrating the scale, make sure it is not set for Legal For Trade operation.Calibration Types – The FD Series’ calibration can be adjusted in two ways, Span and Linearity. Spancalibration uses two calibration points to adjust the sensitivity of the scale. Linearity calibration uses threecalibration points to correct for non-linear weighing results.Calibration Weights – Before beginning calibration, make sure that the required calibration weights areavailable. The model-specific calibration points are listed in the table below.3.8.1 Calibration PointsNOTES:1. Default calibration points are shown in bold print.2. Calibration Units kg or lb are selected in the Setup sub-menu.3. ASTM Class 4 or OIML Class F2 weights are required for calibration.3.8.2 Span Calibration1. Enter the menu by holding down theMenu button until Menu is displayed. When the button isreleased, CAL is displayed.2. Press Yes to enter the Span menu.3. With SPAN displayed, press the Yes button to begin the Span calibration process.4. Clear the pan if prompted to do so, then press the Yes button.....5. The display will show “--C--”, followed by the span calibration weight value.6. If desired, press the No button to change to an alternate span calibration weight value.7. Place the indicated calibration weight on the scale and press the Yes button.8. The display will show “--C--”, then “done” and then revert to weighing. Remove the calibrationweight.NOTE: The calibration procedure can be canceled at any time by pressing the Exit button or turning thescale off.Linearity Calibration PointsModel Calibration Unit Span Calibration PointsFD3FD6FD15kglbKglb1, 2 or 3 kg2, 5 or 6 lb2, 5 or 6 kg5, 10 or 15 lb5, 10 or 15 kg10, 20 or 30 lb1 or 2 and 3 kg2 or 4 and 6 lb2 or 4 and 6 kg5 or 10 and 15 lb5 or 10 and 15 kg10 or 20 and 30 lbKglbTABLE 3-5. CALIBRATION POINTS.