When you are researching the best air compressor to buy, the sound power level and sound pressure level are important. The question is, what do these phrases mean?
- The sound power level tells you the total acoustic energy that a machine, or piece of equipment, radiates to its environment.
- The sound pressure level is a measure for the effect of the energy of an acoustic source (or a collection of sources). It depends on the distance to the source(s) and acoustic properties of the surroundings of the source.
When you buy a new air compressor, you need to think about the sound pressure level that will be acceptable in your workplace. Some of the ratings sound complicated so we have tried to explain this in simpler terms in the table below. If you need any help deciding which compressor is best for you, just ask! You can ring our team on 0121 7533330, or contact us.
Common sounds and their decibel ratings
-
Sale! Add to basket£1,160.00Original price was: £1,160.00.£1,102.00Current price is: £1,102.00. exc vat. -
Sale! Add to basket£1,188.00Original price was: £1,188.00.£1,129.00Current price is: £1,129.00. exc vat. -
Sale! Add to basket£1,415.00Original price was: £1,415.00.£1,344.00Current price is: £1,344.00. exc vat. -
Sale! Add to basket£1,160.00Original price was: £1,160.00.£1,102.00Current price is: £1,102.00. exc vat. -
Sale! Add to basket
£1,188.00Original price was: £1,188.00.£1,129.00Current price is: £1,129.00. exc vat.
We provide information on the sound power levels of our air compressors but it’s important to remember that the sound power level of a machine is a fixed value, where the sound pressure level always depends on position and environment. If you use your compressor in different conditions, the actual sound power might be different. If you need to keep noise to a minimum in your workplace, we recommend our range of silenced air compressors. We have large, small and healthcare-grade silent and low noise air compressors.
In relation to the EU Machinery Directive we speak about the “emission sound pressure level”. This represents the sound pressure level an operator or bystander is exposed to, in a free field above a reflecting plane.
Important – Air Compressors are measured and compared within the industry @ 4 meters. To comply with EEC regulations all air compressors have to be marked in LWA. This is a different measurement of sound which is taken from a different distance. For an example a typical 3hp piston compressor is rated at its lowest at 73 dB(A) @ 4 meters on the LWA scale this would equate to approximately 93 decibels. Please beware of this as all products have LWA marked on them with stickers similar to the image below.
LpA, LwA
Levels are described in ISO standards, using the following abbreviations or descriptors:
Lp: sound pressure level, and LW: sound power level
If A-weighting has been applied, then the descriptors above contain the character A at the end, for example: LpA
dB and dB(A)
dB (abbreviation for decibel) is the “unit” for both pressure and power level. It’s not a unit because it’s the logarithm of a quotient, that’s why Lp and LW are both expressed in dB, each with a different reference. The decibel is essentially unit-less! The A in dB(A) is not supported by ISO standards. The reason is that the A must be contained in LpA or LWA, and with a proper description. That is what’s needed for a good specification, requirement or measurement result.
Safety Note: If you see db, DB or Db in relation to noise or sound levels you should not take the information at face value. It suggests that the author is unfamiliar with some important concepts. You should ask yourself if you can trust someone who does not know that dB must be used (e.g. knows were dB “comes from”) because it suggests that the person, institute or company lacks the most basic knowledge about sound levels and related subjects.
Sound power level LWA dB(A) | Theoretical average sound pressure level LpA dB(A) | ||
L | 1m | 4m | 15m |
80 | 72 | 60 | 48.5 |
85 | 77 | 65 | 53.5 |
90 | 82 | 70 | 58.5 |
95 | 87 | 75 | 63.5 |
100 | 92 | 80 | 68.5 |
Typical reduction | 8 | 20 | 31.5 |
The decibel which is normally abbreviated dB(A) is the unit used to measure the intensity of a sound. The human ear is incredibly sensitive. A person’s ears can distinguish between wide ranging sounds. You can hear everything from brushing your fingers on a notepad to the loudest explosion or jet aircraft.
To put these differences into perspective a jet aircraft is 1,000,000,000,000 times louder than the quietest audible sound.
Looking on the decibel scale, the smallest audible sound which is near silence registers at 0 dB. An increase of 10 decibels equates to a 10 fold increase in noise to your ear.
Ready to Assist You
Whether you need assistance in making the initial choice, or you require ongoing support for your compressor, Compressed Air Systems UK is here to help. Our experienced team is ready to provide you with the information, products, and services you need to make an informed decision.
- 24/7 Phone Support: Our experts are available around the clock at 01217533330 to answer your calls and provide immediate assistance.
- Messaging Service: For detailed inquiries or if you prefer written communication, send us a message. We’re committed to responding promptly.
- Live Chat: For quick questions or guidance, our live chat service is a convenient way to get the help you need.
We understand the critical nature of compressed air systems in your operations, which is why we strive to offer solutions that bring you the best in efficiency and reliability.
Visit Our Location: If you would like to see our range of products in person or speak to our experts face-to-face, our doors are open at Unit 15, Fortnum Close, Birmingham, B33 0LG. For directions or any pre-visit questions, give us a call at 01217533330.
With Compressed Air Systems UK, you gain more than just a supplier — you gain a partner committed to ensuring your compressed air systems are as energy-efficient and cost-effective as possible. Contact us today, and take the next step toward optimising your operations with confidence.
A Comparative Analysis of Oil-Water Separator Technologies: Choosing the Right Solution for Your Business
At Compressed Air Systems UK, we know that compressed air is the lifeblood of countless industries across the UK. But
Why Oil-Water Separators Are Vital: Avoid Fines & Stay Compliant
Companies using air compressors could face fines of up to £20,000—or even imprisonment—if they fail to comply with regulations surrounding
The Importance of Service Contracts & 24/7 Support
The Importance of Service Contracts and 24/7 Support in Preventing Air Compressor Failures If your business uses an air compressor,
Enhancing Energy Efficiency with ESOS Phase 4 and Compressed Air Systems UK
Energy Efficiency Solutions with ESOS Phase 4 and Tanair Compressors As the UK continues to strive towards its Net Zero
Unlocking Energy Efficiency with ESOS Phase 4
Unlock Energy Efficiency with ESOS Phase 4 The Energy Savings Opportunity Scheme (ESOS) is a mandatory energy assessment scheme designed
How to Choose the Right Air Compressor for Your Business
Finding the Ideal Air Compressor for Your Business Air compressors play a critical role in various industries, serving as essential
Hey I know this is off topic but I was wondering if you knew of any widgets I could add to my blog that automatically tweet my newest twitter updates.
I’ve been looking for a plug-in like this for quite some
time and was hoping maybe you would have some experience with something like this.
Please let me know if you run into anything.
I truly enjoy reading your blog and I look forward to your new updates.
I have been looking for a social media widget too! Please come back to our blog if you come across anything!
Hello my loved one! I wish to say that this post is amazing, great written and come with almost all important infos.
I’d like to see extra posts like this .
I couldn’t refrain from commenting. Very well written!
This is really interesting, You’re a very skilled blogger. I’ve joined your feed and look forward to seeking more of your excellent post.
Also, I have shared your web site in my social networks!