Galvanic Applied Sciences Monitek AT3, Руководство по эксплуатации и установке

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MODEL AT3 3 – 13
AT3/ AS3 SAMPLE CALIBRATION PROCEDURE
Sample 0-1000 ppm for 5 mhz and 15mhz systems using diatomaceous earth typically using 5
calibration points.
Steps:
1. Mix 2.0 grams of diatomaceous into 2 liters of DI water. This will be 100% of range (1000ppm).
2. Take 500ml of 100% mixed solution into a jar.
Ensure sample is constantly being mixed (e.g. magnetic stirrer).
Cut remaining sample into the following concentrations: 75%, 50% and 25%.
3. Insert probe; shake probe to eliminate any bubbles stuck under tip.
4. Using AT3 front panel keypad, go to Main Menu / Set UP / Display Raw Data.
Refer to section III "Quick Start Up" pg. 3-5.
5. Once in "RAW DATA" Press Main Menu two times; this will show the counts.
6. Set total counts to read between 2000 and 50000.This is done by adjusting the potentiometer on
the pre-amp board (figure 3-22), the threshold and window position.
Refer to section III "Measurement Setup" pg. 3-6.
7. Return to Main Menu-Setup.
Press calibration {password 0000 or other set by customer).
Press Sample table #5 to view existing calibration table.
At this window choose concentration 1000ppm {sample #5)
Press Read Sample 3 times.
8. Repeat step 8 for 75% on sample #4, 50% on #3, 25% on #2 and #l DI water.
Once all 5 data points are completed, return to calibration window and select which "Cal Type" to
use. (e..g. "Best Fit Line" or "Best Fit Parabola").
9. Return to Calibration. Press Fit Sample Data.
10. At Main Menu, Set Analog Output 4-20ma and Setpoints to read 0-1000ppm.
11. Go to Setup to Display System Summary this will show: counts, ppm and graph output.
12. Once calibration is completed, hit the previous button until the display reads.
NOTE : For added assistance, follow section III of the AT3 manual, along with this procedure.