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  1. KGisME

    Help me calculate the CFM of this fan in our application

    Yes, I linked to the manufacturer's page for this model in my original post, so I am familiar with their website. The data they provide is lacking compared to most fan manufacturers I've worked with in the past. I tried requesting more data through their form several times, with the first time...
  2. KGisME

    Thermal Imagers withOUT WiFi/BT & Low(ish) cost

    Nobody?
  3. KGisME

    Thermal Imagers withOUT WiFi/BT & Low(ish) cost

    Wasn't sure which forum to post this in, as I could see almost all engineering disciplines using a Thermal Imager. Hopefully it will reach as many eyes as possible here. I'm looking for a good handheld Thermal Imaging Camera, preferably in the sub-$1000 range that does NOT have WiFi, Bluetooth...
  4. KGisME

    Help me calculate the CFM of this fan in our application

    Yeah, that seems more like the right ballpark. If I can get approved to buy one of these low-flow balometer kits, I'll report back with my actual test data when I get it.
  5. KGisME

    Help me calculate the CFM of this fan in our application

    AH-HA! Found some small, relatively lower cost vane anemometer/ balometer kits for low flows https://www.testequipmentdepot.com/wohler-usa-fa-410-kit-4155-large-vane-anemometer-kit-with-fa-410-measuring-funnel-set.html...
  6. KGisME

    Help me calculate the CFM of this fan in our application

    Testing with a balometer (if they can work when oriented horizontally?) is probably the best way. They're so expensive though, I'm not sure I can get them to buy one, and if I did it would take awhile. Hmm would I be able to make a reasonable estimate of the flow rate through a very small...
  7. KGisME

    Help me calculate the CFM of this fan in our application

    I would definitely use this equation if I could, but unfortunately I don't have the heat dissipated by the computer either. We've tried to get that info in the past without success, but I could try again. Yeah, I was thinking the same thing, so I did test it a second time to make sure. Agreed...
  8. KGisME

    Help me calculate the CFM of this fan in our application

    Ahhh, this will work, thank you! To work through this and make sure I have my units properly accounted for, if I solve for volume flow rate (Q), I will get Q = Power (W) / delta-P (Pa) using the motor nameplate info (115V, 1.3A) to get power, let's try this out (I'll still go measure actual...
  9. KGisME

    Help me calculate the CFM of this fan in our application

    Hi, we have this draft inducer fan cooling a piece of avionics in a simulator as described here https://www.eng-tips.com/threads/reliable-alternative-to-this-fan.526827/. It’s this one...
  10. KGisME

    Reliable alternative to this fan?

    Ok finally was able to test it yesterday and found that the SP is 1.3" W.C. The existing fan is 1/30 HP, although Fasco has since changed the motor on that model, and the new ones they sell now have a 1/25 HP motor instead. I know it's a shaded pole motor. Now, how to spec a suitable replacement...
  11. KGisME

    Help a non-PLC guy with this control application

    Ahh ok. Yes, I did notice that 2 of the basic controllers would be cheaper than 1 of the advanced controllers. I think might actually be ok both the pressure and temperature inputs controlling the same output relay (the one that shuts down the computer), as long as I could have separate aux...
  12. KGisME

    Reliable alternative to this fan?

    The existing fan is this furnace draft inducer https://www.regalrexnord.com/products/blowers/draft-inducer-blowers/round-outlet-shaded-pole-oem-replacement-draft-inducer-blower-115-volts-flange-no-a088 , which is only connected to our system at the fan outlet. The fan inlet draws from the...
  13. KGisME

    Reliable alternative to this fan?

    Oooo these may fit the bill as well. https://www.greenheck.com/products/air-movement/fans/ceiling-exhaust-fans I used more Greenheck fans in my previous life in custom industrial HVAC equipment, but I didn't realize they even made this type of little bathroom fart fan. Says they're designed for...
  14. KGisME

    Reliable alternative to this fan?

    Hi all. I’m looking to replace this furnace draft inducer fan we use for cooling a very expensive avionics computer in a stationary simulator as detailed here. FASCO’s datasheets have no info on CFM or SP that I can find, so it's difficult to know what CFM & SP to look for in a replacement fan...
  15. KGisME

    Help a non-PLC guy with this control application

    Hmmm, alrighty...that is true, simple pressure switch and temperature switch in series will do the job. I just had a meeting with the "higher ups"....apparently equipment cost is not a concern, just my labor cost is...whoops. But they do want the extra features like a second relay to warn when...
  16. KGisME

    Help a non-PLC guy with this control application

    Cool cool thanks for your help. I was familiar with the concept of hysteresis (you just reminded me that I once owned a very basic cheap temperature controller for controlling fermentation temps when I used to homebrew). But I certainly didn't not know the nuances of hysteresis behavior in these...
  17. KGisME

    Help a non-PLC guy with this control application

    Hmm I wonder If I could use one of those "Standard" temperature controllers plus a "dumb" pressure switch like this Dwyer, and put the pressure switch in series with the relay on the temp controller that shuts off power to the computer?
  18. KGisME

    Help a non-PLC guy with this control application

    Alrighty. Yeah, I'm very familiar with Dwyer having come from the HVAC world. So I have looked at all their offerings that are relevant for this application, although none seemed as good of a value and as flexible/powerful as the Automation Direct house brand controllers. Do you have any...
  19. KGisME

    Help a non-PLC guy with this control application

    Any suggestions for the best equipment/hardware to do all you suggest here with?
  20. KGisME

    Help a non-PLC guy with this control application

    Thank you sir. alrighty, found an outhouse light

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