hello all

our 2130 analyzer is unable to trap readings above 0.6 IPS.What are the sensor settings "Plotting fullscale range and Higest valid signal level". Right now we have these settings at .0 and 1.2 resp. Can any one please explain and recommend what they should be.

Thanks Terrence

These setting work ok. What is yours set on other than what you posted in your questions?

Following in the mode of Terrence question; I can recall, taking vibration measurements on an engine whose amplitude levels for some reason was over 2 inches /sec, the 2130 was set to auto range,and yet the readings were not trapped.On the software the readings were
Plotting fullscale range 0.0
Highest valid signal level 1.2.
What is confusing to me is why do I still have to configure the software when the analyzer is set to auto range.

If the highest valid signal level is 1.2, and the data collector sees a value of 2, it will deem it to be a bad reading. I don't know about the 2130, but in the 2120 it will ignore readings above the highest valid signal level, unless the data collector is set to store bad readings.

Ian is right. The highest valid signal level setting is to alert you that you have a bad reading (bad cable, accelerometer rocking, etc.) The 14.14 setting seems too high to be useful to me, but it's the CSI default for some reason, and I've just never changed it. I always monitor the spectrum when I'm taking data, and display the spectrum after the reading is taken, so I always see the "ski slope" that usually accompanies a bad reading.

Terrence,

One thing I do when I run into the same situation is to collect and store a reading from one of the 2130 Analysis Experts usually a high resolution or high frequency.

And if you enter zero in the "lowest valid signal level" & "Highest valid signal level" fields the messages won't be generated and data won't be left ignored because of the messages.

Rusty's approach of always looking at data as it is collected is what I do so don't need the messages. This is what should be taught as a first line of defense against poor data quality. At one site, after program was taken over it was found that 1 out of 10 spectra had enormous ski slope. Previous technicians would just slap on accel, press button and move as fast as possible.

What I have also noticed : I get the error message saying bad reading, but there is a spectrum in the analyzer, after data is dumped I cannot view the spectrum on the computer. What accounts for this? Can I still dump the data, know it is a bad reading, and still look at it on my PC screen?

Hi vibehigh,
That may have to do with your "route storage" settings which can be configured to, never store, store on high alarm or always store data. Settings can be checked by going to "Route Management" and "Print Route Summary" then selecting the route in question. Each point should have a S=St and W=St against it. (S-Spectrum, W-waveform, St-Stored)

To change the settings go "Modify Route Storage" select route, "save spectra on all measuring points", followed by "save waveforms on all measuring points". This must be done for each route. With hard disk space cheap there is no reason to not store data and storing on "hi status" only means you have to have all your alarms very carefully set. Try that and see if that sorts out the "bad reading data" not downloading to pc.
Once you've tried that, and still not successful, I would put Highest & Lowest Valid Signal fields to be zero.
p.s. I think you'll need to download route and collect data again for all this to work, if you have existing data on your analyser that you want to make appear on pc, I think it may no longer be possible, unless someone else has a suggestion.

This message has been edited. Last edited by: Vibe-Rater,

Thanks for the informative response Vibe-rater, I will check my settings and adjust as necessary, will let you know the results.

Hi vibehigh,

Thinking about it some more...

Look at the communications program settings. From memory, there are defaults set when software is installed first time that should be changed immediately.

Go to CSICOM, from the main menu. Click on "Setup Dump". "Save Data Bad Sensor" & "Save Data Bad Reading" should be ticked, I think I wasn't quite right in my first response, sorry about that, this should do it for you! (in which case you might still be able to download the spectra if still on your analyser, and not have to collect again! The settings will be set like you left them next time you open the software. Irie Mon.

every one...

These are my current settings

Probe type casing
Sensor orientation horizontal
Sensor position unknown
Provide sensor power checked
Sensor sensitivity 0.1
DC offset in volts 0.0
Signal group number 20
Signal channel number 1

Measurement is set to Auto range Turn Auto range Off

Plotting full scale range 0.0
HFD full scale range 5
Lowest valid signal level 0.001414
Highest valid signal level 1.2
Integration mode override none
Overall mode override digital RMS

I am presently trying vibe-rater comments on the "set dump" tab to see if i can dump the high readings...Let you all know what’s happening

Thanks Vibe-Rater...settings worked like a charm, and I did not have to go and re-take readings.