Analytical-industries GPR-1600 MS Series PPB Oxygen Analyzer Manuel d'utilisateur télécharger pdf (Page 24)

Advanced Instruments Inc.

Note: For calibration purposes, use of the AUTO SAMPLE mode is recommended. However, the user can select the full scale

MANUAL SAMPLE RANGE for calibration as dictated by the accuracy of the analysis required – for optimal accuracy, a span gas

with an 800 ppm oxygen concentration with the balance nitrogen would dictate the use of the 0-1000 ppm full scale range for

calibration for analysis below 100 ppm, whereas, 80 ppm span gas is acceptable but not “optimal”, see Calibration & Accuracy.

Auto Sampling:

1. Access the MAIN MENU by pressing the MENU key.

2. Advance the reverse shade cursor using the ARROW keys to highlight AUTO SAMPLE.

3. Press the ENTER key to select the highlighted menu option.

4. The display returns to the sampling mode:

MAIN MENU

AUTO SAMPLE

MANUAL SAMPLE

CALIBRATION

CONFIG ALARMS

BYPASS ALARMS

3.3PPM

AUTO SAMPLING

10 PPM RANGE

24.5 C

LO1 2 PPM 10 PPM HI2

The display will shift to the next higher range when the oxygen reading (actually the sensor’s signal output) exceeds 99.9% of

the upper limit of the current range. The display will shift to the next lower range when the oxygen reading drops to 85% of the

upper limit of the next lower range.

For example, if the analyzer is reading 1% on the 0-10% range and an upset occurs, the display will shift to the 0-25% range

when the oxygen reading exceeds 9.9%. Conversely, once the upset condition is corrected, the display will shift back to the 0-

10% range when the oxygen reading drops to 8.5%.

Manual Sampling:

1. Access the MAIN MENU by pressing the MENU key.

2. Advance the reverse shade cursor using the ARROW keys to highlight MANUAL SAMPLE.

3. Press the ENTER key to select the highlighted menu option.

4. The following display appears:

MAIN MENU

AUTO SAMPLE

MANUAL SAMPLE

CALIBRATION

CONFIG ALARMS

BYPASS ALARMS

>>>

MANUAL RANGE

1000 ppm

100 ppm

10 ppm

1 ppm

5. Advance the reverse shade cursor using the ARROW keys to highlight the desired MANUAL RANGE.

6. Press the ENTER key to select the highlighted menu option.

7. The following displays appears with the range selected and oxygen concentration of the sample gas:

MANUAL RANGE

1000 ppm

100 ppm

10 ppm

1 ppm

>>>

3.3PPM

AUTO SAMPLING

10 PPM RANGE

24.5 C

LO1 2 PPM 10 PPM HI2

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 49 50

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Analytical-industries GPR-1600 MS Series PPB Oxygen Analyzer Manuel d'utilisateur Page 24

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