Model T265 Chemiluminescence Ozone Analyzer Addendum to Model T200 Manual | Getting Started |
Setting the range and inputting the expected ozone span gas concentration
Performing a zero/span calibration
Running a calibration quality check
Part 1 - Set the range, then enter the expected ozone span gas concentration:
Step | Action |
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1.Press
CAL>CONC
2.Press ENTR
5.Press EXIT
6.Press
SETUP>RNGE>
MODE>SNGL
7.Press
SETUP>RNGE> SET
Comment
This menu sequence causes the Model T265 to prompt for the expected span concentration. Enter the span value by pressing the button for each digit until the expected value is set.
ENTR stores the expected span value. The internal formula is adjusted to compute this number when span gas concentration is input into the instrument.
Returns instrument to SAMPLE mode.
If necessary, you may want to change the Range Mode. Choices are either Single or AutoRange. Normally the instrument is shipped in Single Range Mode.
After the mode is set, you may want to set the maximum Range value. The instrument is shipped with the Range set at 500 ppb. This setting affects only your analog outputs, not the
Part 2 - Calibrate the instrument: Zero/Span Calibration Procedure
Step | Action | Comment |
1. | Input zero gas | Allow zero gas to flow passed the sample port on the |
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| rear of the instrument. |
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2. | Press CAL | The Model T265 enters the calibrate mode from |
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| sample mode. |
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3. | Wait 30 min | Wait for the reading to stabilize at the zero value. If |
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| you wait less than 10 minutes the final zero value may |
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| drift. You may want to watch the stability “O3 STB” |
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| test function (moving standard deviation) for its |
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| minimum value. |
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4. | Press ZERO | The ZERO button will be displayed once the |
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| concentration approaches zero. |
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5. | Press ENTR | Pressing ENTR zeroes the instrument and adjusts both |
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| offset and slope so that Zero concentration is |
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| displayed. |
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07337B DCN6324
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