IX. NON-STANDARD SCALE CALIBRATION
CALIBRATING THE ANALYZER TO READ COFFEE SAMPLES TO USER ASSIGNED SCORES
This procedure may be used to calibrate the E20CP-III to user defined product standards
a) Prepare a ground light sample of known score, Agtron 55 score or higher
b) Prepare a ground dark sample of known score, Agtron 25 score or lower
c) If you are matching readings from another AGTRON coffee roast analyzer, calibrate that analyzer with
the standard procedure and read the prepared light and dark samples to establish the desired coffee
scores
1) Write down the desired scores for both the light and dark samples
2) Depress and hold the [3] key then depress the [F-CAL] key
The display will show: -OPEN SAMPLE DRAWER-
<SET REFERENCE MODE>
3) Fully open the sample drawer
The display will show: -- HIGH REFERENCE --
RED-DISK OR SAMPLE
4) Place the light sample into position in the drawer sample tray
NOTE: Make certain the dish sits flat and fully into the recess in the sample tray.
5) Fully close the sample drawer
The display will first show: -- HIGH REFERERENCE --
ENTER VALUE : XXX.X
The High Reference value from the previous calibration will be displayed
6) Enter the desired value for the light sample using the numeric keypad
7) Depress the [ENTER] key on the numeric keypad to accept the new value
The display will show: -OPEN SAMPLE DRAWER-
8) Fully open the sample drawer
The display will first show: * SETTING REFERENCE *
- KEEP DRAWER OPEN -
The display will change to: -- LOW REFERENCE --
BLACK-DISK OR SAMPLE
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