Cardinal 2240 Operation Manual

Cardinal 2240 Operation Manual Manual pdf 25 page image

CALIBRATION and SETUPThis scale was calibrated at the factory and should not require adjustment. In the event that thescale should need recalibration, the following describes the Calibration of the Digital CountingScale. A qualified technician should perform this function to maintain the instrument's highdegree of accuracy.Before beginning calibration, the following equipment is required:Calibrated test weights (Full capacity for all models, e.g. 5 lbs for 5 lb, . . . 100 lbs for 100 lb)Small Flat Blade screwdriver (to remove calibration sealing screw)If sealing wires require breaking for purposes of calibration, proper procedures underNational Institue of Standards and Technology Handbook 44 must be adhered to.CALIBRATION PROCEDURE - LOCAL SCALE1. With the scale power off, remove the calibration sealing screw on the right side panel, seeFigure No.7.2. With the screw removed, place the power switch in the ON position. The scale will perform abrief lamp test. This test consists of illuminating all display segments and annunciator LED'sfor approximately three (3) seconds to allow the operator to make a visual verification thatthe display is operational. After completion of the lamp test, the scale will display the modelnumber and software revision level, then the weight display will change to SCALESCALE.3. Select the LOCAL scale by pressing the LOCAL SCALE key.4. The weight display will change to LOADLOAD and the count display will change to xxxxxx. Notethat xxxxxx is the capacity of the scale and the load required to calibrate the scale. This willvary depending on the capacity of the scale and the units of measurement selected.5. Press the lb/kg key to select the units of measurement for calibration. Note that the "lb" or"kg" annunciator will be illuminated to indicate which unit of measurement has been selectedand the count display will show the corresponding load.6. Press the + key to cycle up through or the - key to cycle down through the folowingcapacity values: 5, 10, 20, 50, 100 for pounds (lb) or 2, 5, 10, 20, 40 for kilograms (kg).CAUTION: The capacity value selected must match the load cell installed in thescale. Proper operation of the scale may be inhibited and the warranty will bevoided if the required load cell is not used. Refer to the Load Cell Table in theParts Identification section of this manual for the required load cell for thecapacity selected.7. Place the required calibrated test weight on the scale platform, wait about 5 seconds for thescale to stabilize, then press the ENTER key to start calibration.24Calibration Sealing ScrewFigure No. 7