Teledyne T265 manual Step, Action, Comment

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

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 RS-232 output.

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
		rear of the instrument.
2.	Press CAL	The Model T265 enters the calibrate mode from
		sample mode.
3.	Wait 30 min	Wait for the reading to stabilize at the zero value. If
		you wait less than 10 minutes the final zero value may
		drift. You may want to watch the stability “O3 STB”
		test function (moving standard deviation) for its
		minimum value.
4.	Press ZERO	The ZERO button will be displayed once the
		concentration approaches zero.
5.	Press ENTR	Pressing ENTR zeroes the instrument and adjusts both
		offset and slope so that Zero concentration is
		displayed.

07337B DCN6324

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