Frequently Asked Questions

A: 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 ​

A: The ranges can be configured by following this procedure.​

A: 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. ​

A: The analyzer should work as low as 198 VAC. 

A: 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. 

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

A:​ 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. 

A:​ 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.

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

A:​ 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. 

A:​ 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. 

A:​ Please refer to the attached document to trouble-shoot the problem: 05-028B_pmt_temp_problem_9100EH.doc

A:​ Please refer to the following document: 9110_Setup_Guide.doc 

A:​ 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 utiliz​​ed for the zero and span gas. 

A:​ 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