Teledyne 9110T instruction manual Frequently Asked Questions, Answer

Model 9110T NOx Analyzer Troubleshooting & Service

Mounting

Screws

AC Relay Retain Occludes

Mounting Screw on

P/N 045230200

Figure 12-11: Relay PCA Mounting Screw Locations

12.9. FREQUENTLY ASKED QUESTIONS

The following list was compiled from the TAI's Customer Service Department’s 10 most commonly asked questions relating to the 9110T NOx Analyzer.

QUESTION

Why does the ENTR button sometimes disappear on the front panel display?

Why is the ZERO or SPAN button not displayed during calibration?

How do I enter or change the value of my Span Gas?

Can I automate the calibration of my analyzer?

ANSWER

Sometimes the ENTR button will disappear if you select a setting that is invalid or out of the allowable range for that parameter, such as trying to set the 24-hour clock to 25:00:00 or a range to less than 1 or more than 20000 ppb. Once you adjust the setting to an allowable value, the ENTR button will re-appear.

The 9110T disables certain these buttons expected span or zero value entered by the users is too different from the gas concentration actually measured value at the time. This is to prevent the accidental recalibration of the analyzer to an out-of-range response curve.

EXAMPLE: The span set point is 400 ppb but gas concentration being measured is only 50 ppb.

Press the CONC button found under the CAL or CALS buttons of the main SAMPLE display menus to enter the expected NOx span concentration.

See Section 9.2.3.1 or for more information.

Any analyzer with zero/span valve or IZS option can be automatically calibrated using the instrument’s AutoCal feature.

Teledyne Analytical Instruments 316