I'd borrow the meter from your work and retest. Phone apps are not very accurate as far as dB readings are concerned. I'd bet you are 80-85dB at least. 68dB is not much louder than normal conversation.
Noise Insulation for shop compressor?
- Thread starter dragoneggs
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I'd borrow the meter from your work and retest. Phone apps are not very accurate as far as dB readings are concerned. I'd bet you are 80-85dB at least. 68dB is not much louder than normal conversation.
OP
dragoneggs
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Agreed. I have had mixed success with free phone Apps. I settled on and use the iPhone app called NIOSH Sound Level Meter with good success. Just went out to compare it to my quality decibel meter and they were within +/-2dB with the NIOSH fluctuating around the steady reading of 86dB on my dB meter.
MossRoad
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that's the same one i use. good to establish a baseline and then look for changes.
NIOSH is the one I am using also. 89dB at 2' and 85dB at 6'. An intake silencer should be here tomorrow but I'm not holding my breath for any great improvement in the noise level. It is just a loud and noisy beast.
dstig1
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I can't find it in the Google app store. 10 trillion sound meters but I don't see that specific one. Granted i could not scroll through 10 trillion lines, but went down a couple hundred at least. I love how everyone tries to scam the search functions so you can't find the one you really want. Oh - i looked it up on the NIOSH website and it appears toe be Apple only. Figgers.
My app has a rough calibration setting (a simple offset plus or minus from what it shows) but with both meters in hand i should be able to make it more useful with that.
My app has a rough calibration setting (a simple offset plus or minus from what it shows) but with both meters in hand i should be able to make it more useful with that.
downsizingnow48
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Out of curiosity I found my db meter and measured the three compressors I have at 15 ft. That is the closest I would be to the machine in use, usually further than that. The 35 year old Emglo framing compressor (1.5 hp) was 73db. The 5 year old Ingersol Rand (2hp) was 75 db. The 1 year old California Air Tools (1hp) was 53 db.
Not to shabby. I hope to get mine down to at least 75dB. That would be an improvement.
TMGT
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The specs on my Quincy 20hp screw compressor is 70dba at 1meter, it's mounted high enough that you really don't even notice it.
I couldn't find any specs for the 7.5hp Ingersoll Rand reciprocating compressor, but its pretty loud/obnoxious.
Can't wait to finish hooking up the Quincy so the Ingersoll can go to backup duty!
I couldn't find any specs for the 7.5hp Ingersoll Rand reciprocating compressor, but its pretty loud/obnoxious.
Can't wait to finish hooking up the Quincy so the Ingersoll can go to backup duty!
OP
dragoneggs
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I guess those California Air Tool compressors are maybe amazingly quiet, eh? They better be as a 4hp 60gal is $3500 vs. my Husky 3.7hp 60gal at $500.