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Technical Support FAQ

9110 Series: Chemiluminescent CEM NO / NO2 / NOx Analyzer

I would like to use a span gas with N2 background, instead of CO2 background. If there a way to do this so that the unit handles the change in sensitivity of the unit one does this?
How do I change the analyzer range(s)?
I need to wire a STATUS output to my system which accepts a dry contact. How do I do this?
I need to configure my analyzer for a difference voltage and frequency. How do I do this?
How low of a voltage can be applied to a unit configured for 220 VAC?
Is there an issue to operate the analyzer on a different power frequency than which it was configured (e.g. apply 50 Hz power to a 60 Hz unit)?
What is the pressure rating of the auto-calibration valves?
I wish to connect an external electromechanical relay to one of the status signals which is an open collector output inside the unit. If I use the internal 5V power supply to power the external relay, how much voltage may drop across the internal open collector transistor?
When performing a manual zero or span calibration, the ZERO or SPAN button does not appear where the procedure says it should. Why not?
What is the rating of the relay alarm contacts?
What is the recommended frequency of exchange of the convertor?
What are routine maintenance intervals for this unit?
We get a PMT Temp Warning message on the display. What parts are needed for repairs and how do we deal with this?
How do I set up a 9110 analyzer?
We have a model 9110E and it displays the following warning messages:

* SAMPLE PRESS WARN
* RCELL PRESS WARN

What do these messages mean?
Can you please tell me the weight and dimensions of the external pump block for the 9110 AH?


I would like to use a span gas with N2 background, instead of CO2 background. If there a way to do this so that the unit handles the change in sensitivity of the unit one does this?

While we recommend actually calibrating the unit on the background gas, but if you wanted to simply multiple the concentration by 1.5 you can press SETUP MORE DIAG 929 ENTR, scroll over till you get FACTORY OPTIONS hit ENTR. Turn DILUTION ON and then exit out to the main menu. Press SETUP RANGE you should now have a DIL button, press DIL. Input the number 1.5 and hit ENTR. All of the concentration readings will now be multiplied by 1.5

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How do I change the analyzer range(s)?

The ranges can be configured by following this procedure.

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I need to wire a STATUS output to my system which accepts a dry contact. How do I do this?

The STATUS outputs do not provide a dry contact output, so you will require an external relay with 5 VDC coil. Wire the positive terminal of the relay coil to the + STATUS connection and the negative terminal of the relay coil to the desired STATUS output to monitor. Additionally a jumper will be needed between the D and ground (far right) terminals. Your relay output will then act as a dry contact for this output.

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I need to configure my analyzer for a difference voltage and frequency. How do I do this?

Please click on this link to view the note addressing the voltage and frequency dependent changes.

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How low of a voltage can be applied to a unit configured for 220 VAC?

The analyzer should work as low as 198 VAC.

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Is there an issue to operate the analyzer on a different power frequency than which it was configured (e.g. apply 50 Hz power to a 60 Hz unit)?

It is recommended to make the approach frequency jumper modification to operate the unit at a different frequency. Please contact the factory for details on the appropriate part number(s) and instructions.

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What is the pressure rating of the auto-calibration valves?

The valves are rated for 75 psig closed and 15 psig open.

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I wish to connect an external electromechanical relay to one of the status signals which is an open collector output inside the unit. If I use the internal 5V power supply to power the external relay, how much voltage may drop across the internal open collector transistor?

The voltage drop across the transistor is load-dependent, but is generally about 1.0-1.5 V. Since it is difficult to source relays to run at such a low coil voltage, using an external power supply instead of the internal supply to assure the relay is turned on is recommended.

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When performing a manual zero or span calibration, the ZERO or SPAN button does not appear where the procedure says it should. Why not?

The detector must see a certain threshold achieved for button to appear to initiate that calibration. In the case of zero, the reading must be under a level (e.g. 0.5 ppb) to allow a zero and for the span, the signal must fall within a range of acceptability based on the concentration. These thresholds may be configuration-dependent and can be found in the Manual Calibration section of the manual.


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What is the rating of the relay alarm contacts?

The relays are rated 10A @ 125 VAC and 6A @ 277 VAC


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What is the recommended frequency of exchange of the convertor?

There is no set time for replacing the converter. Theoretically, the Molybdenum converter has a life time of approximately 10,000ppm hours. The Hicon converter uses a catalytic reaction and could last much longer. Over time though, both will get dirty and should be replaced as required to recover the conversion efficiency.


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What are routine maintenance intervals for this unit?

Replace the ozone scrubber about once every six months. Check the filter for debris accumulation once a week and then extend the checking interval depending on how dirty the sample is.


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We get a PMT Temp Warning message on the display. What parts are needed for repairs and how do we deal with this?

Please refer to the attached document to trouble-shoot the problem:

05-028B_pmt_temp_problem_9100EH.doc


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How do I set up a 9110 analyzer?

Please refer to the following document:

9110_Setup_Guide.doc


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We have a model 9110E and it displays the following warning messages:

* SAMPLE PRESS WARN
* RCELL PRESS WARN

What do these messages mean?


The warnings that you are getting most likely mean that you are pressurizing the inlet of the analyzer. This analyzer works only with ambient pressure of the sample gas at the sample inlet. Sample pressure should be dropped to about 2 psi and sent to flow controlled flowmeter -set to about 700 cc/min and installing a thee at the inlet. One side of the tee should be connected to the sample gas , the opposite side to the analyzer's sample inlet and the center should be left open to atmospheric vent.

The following is an example piping diagram that shows the analyzer and the way it's connected.

9110_Pos_Pressure.pdf

The same set up has to be utilized for the zero and span gas.


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Can you please tell me the weight and dimensions of the external pump block for the 9110 AH?

The attached documents should adequately describe the dimensions of the pump/pump mounting bracket. The entire assembly is approximately 15lbs.

00911m.pdf
607_627_series.pdf
0098103M.pdf


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