Pen Alignment - Anderson The Guardian III Manuel De L'opérateur

Pen Alignment

Conduct a pen alignment when the sensor display and thermometer all agree but the red line on the chart
is off by more than .75°F (1°C).
NOTE: The "Calibration Seal" may need to be removed to access the Mode Switch to gain access to the
calibration section.
1. Open the door to the Guardian recorder. On the front of the platen in the lower right hand corner is a
small cover held in place by a screw. Remove the screw and the cover to reveal the MODE switch.
Move the MODE switch from the RIGHT position to the LEFT position.
2. Press the SCROLL button until "CAL" is displayed.
3. Press the DOWN button and "inP" will be displayed.
4. Press the SCROLL button and "Chrt" will be displayed.
5. Press the DOWN button and "Pen" will be displayed.
6. Press the DOWN button once again and Pen Calibration is started.
7. During Pen Cal, the pen will drive to the center of the chart, then the pen will drive to the inner most
ring 180°F (82°C). The display will show "P1-Lo" (P2-Lo).
8. Using the UP or DOWN arrow buttons, adjust the pen positioning to the 180°F (82°C) division line.
9. Press the SCROLL button. The pen will drive to the 60°F (15.5°C) division on the chart. The
display will show "PCNT".
10. Pressing the UP or DOWN arrows, adjust the pen position to the 60°F (15.5°C) division line.
11. Press the SCROLL button. The pen will drive to the outer most ring 30°F (-1°C). The display will
show "P1-HI" (P2-HI).
12. Pressing the UP or DOWN arrow, adjust the pen position to the 30°F (-1°C) division line.
13. Press the SCROLL button to save the new calibration values.
14. Repeat steps 7 through 12 for pen 2 (black pen).
15. Move the MODE switch to the RIGHT position. Replace the small cover over the
MODE switch and secure with the screw provided.
If you have any additional questions concerning calibration, please consult Anderson at 1-800-833-0081.
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(Positioning of pen on the chart)
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Anderson Guardian