User's Manual

NDIR Gas Analyzer Settings and Calibration

Teledyne Analytical Instruments 41

2. Select the Ch you want to change by pressing the UP or DOWN

key, then press the ENT key. The setting content is highlighted.

3. Toggle between “both” or “current” using the UP or DOWN key.

 If “both” is selected, zero or span calibration will be

performed on both Range 1 and Range 2 on the selected Ch

when the calibration is performed.

 If “current” is selected, zero or span calibration will be performed

only for the range displayed when calibration is performed.

4. Press the ENT key after the selection, and the specified

calibration is performed.

To close the Calibration Range Settings screen or to abort the entry

midway, press the ESC key. The previous screen will return.

Example:

Ch1

NOx

Range 1: 0 to 200 ppm

Range 2: 0 to 2000 ppm

both

Ch 2

Range 1: 0 to 200 ppm

Range 2: 0 to 2000 ppm

current

Ch1: Range 1 and Range 2 are calibrated together

Ch2: Only the currently displayed range is calibrated

Note: When “both” is selected, the same calibration gas

concentration must be used for both ranges.