Cardinal 225 Installation And Technical Manual

Also see for 225: Installation and technical manual Installation, Set-Up and Operation Manual

Contents

Cardinal 225 Installation And Technical Manual Manual pdf 85 page image

8200-M698-O1 Rev B  225 Installation and Technical 77CALIBRATION AND SETUP, CONT.CALIBRATION METHODSThe 225 has two methods to enter the calibration procedure. One method is selected from theSETUP/REVIEW MENU and the other method selected from SETUP MENU #2.From SETUP/REVIEW MENU:With the SETUP/REVIEW MENU displayed, press the 3 key and then the ENTER key. Thismethod proceeds directly to a display showing the settings for the capacity, interval, decimalpoint position and the first calibration parameter, CAL 1=0.0.From SETUP MENU #2:With the SETUP MENU #2 displayed, press the 5 key and then the ENTER key to proceedto SCALE 1 CALIBRATION MENU. With the SCALE 1 CALIBRATION MENU displayed,press the 1 and 0 keys and then the ENTER key. This method will change the SCALE 1CALIBRATION MENU to show the settings for the capacity, interval, decimal point positionand the first calibration parameter, CAL 1=0.0.CALIBRATION MODESThe 225 indicator has seven modes that can be used to perform calibration. Four of themodes require a test load (weight), one requires the scale to be empty (and at zero) and thelast two use parameter values or the calibration “C” numbers from a previous calibration. Thecalibration modes are as follows:1. Multi-PointThis method requires two weights, an empty scale and has two conversion factors. It usesthree calibration points, CAL 1=, CAL 2= and CAL 3=. The three points correspond tozero weight, mid-point weight and test load (weight) and can be applied in any order.2. Dual-Point with Zero (First Zero)This is a standard calibration method requiring one weight, an empty scale and has oneconversion factor. This method uses two calibration points (CAL 1= and CAL 2=) toestablish a zero (no load) calibration value and to span the indicator. The two pointscorrespond to zero weight and test load (weight) and can be applied in any order. Thismethod should be used for first-time calibration and complete recalibration.3. Dual-Point without Zero (False Zero)This calibration method requires one test weight and establishes a new conversion factoronly. It is used to establish a false (temporary zero) zero without affecting the zerocalibration value stored during the last calibration. This is particularly useful in tankweighing applications, where it may be impractical or impossible to completely empty thetank. This method uses two calibration points, CAL 1= and CAL 2=. The value of thetest load (weight) is entered when CAL 1= is displayed and then the NET/GROSS keypressed when CAL 2= is displayed.