sound level measurement Articles

  • Recording audio with level triggers - Sound Level Meters

    Recording audio from a sound level meter measurement is sometimes necessary. Perhaps you need to listen to identify the source of a noise or for post-processing – or even to play back to a project stakeholder. If a measurement is short, it’s easy enough to record audio for an entire measurement and afterward crop the relevant parts. However, measuring for days, weeks or months, ...

  • Measuring level by weight

    Measuring level or inventory by weight provides high accuracy. The weight is not affected by ingredients that foam or settle unevenly or by changes in density or the shape of the tank. Weight is weight, regardless of percent solids, bridging, rat-holing, or whether your ingredient is conductive or sound-absorbing. Because weighing is a noncontact method of measuring level, there is no chance of ...


    By Hardy Process Solutions

  • Wastewater Level Measurement Techniques

    Level monitoring and control is a fundamental requirement in any wastewater treatment process. You will find level instrumentation installed at even the simplest treatment plants for pump control, chemical storage tanks and process level controls or alarms. Operators have only limited or emergency control over treatment plant influent, so level controls and instrumentation play an important role ...


    By Greyline Instruments Inc.

  • What is a Data Logging Sound Level Meter?

    Looking to buy a sound level meter? You’ll probably see the term “data logging sound level meter” quite frequently. But what exactly is a data logging sound level meter and what does it mean for your noise measurements? Sound level meters have come a long way since Cirrus starting manufacturing their own models in the 1970s. The advances in computing technology has made it far ...


    By Cirrus Research plc

  • CASELLA ENHANCES CEL-630 SOUND LEVEL METERS

    Addition of "Voice Recording" functionality allows user to annotate a measurement and eliminate the need for written notes. Following the launch earlier this year of its ground breaking CEL-630 series of exciting new sound level meters, Casella CEL (www.casellameasurement.com; 01234 844100), has made a number of enhancements that will ...


    By Casella

  • What to look for when buying a sound level meter

    Sound level meters: a matter of class  Since sound level meters, or slm's were invented, they have existed in various grades of accuracy.  Today, accuracy is referred to as 'Class' and the reason behind all this rests with the ...


    By Pulsar Instruments plc

  • Water Level Measurements-Part 1

    Confused about which instrumentation to use in your water level monitoring system? In-Situ offers two categories of pressure sensors for water level measurements: absolute or non-vented sensors, and gauged or vented sensors. They look the same and both measure pressure and water level, but they have drastically different applications, outputs and accuracy. The absolute (or non-vented) water level ...


    By In-Situ, Inc.

  • A quick guide to oil analysis for engine test applications

    Reliability testing is a very important component of new engine development. Engineers need to fully understand and chart the engine lifetime performance under a variety of conditions before mass production may be considered. Many important performance data parameters are collected in real time through the many different types of sensors that are connected to the engine in the test cell and oil ...


    By Spectro Scientific

  • How Often You Should Calibrate A Sound Level Meter

    Do you calibrate a sound level meter frequently? Most sound level meter users know they must calibrate their sound level meters but a questions I frequently get asked if “how often?” Here’s my best practice advice so you can calibrate with confidence. What Do We Mean by Sound Level Meter ...


    By Cirrus Research plc

  • Noise 101: What is Equivalent Continuous Sound Level (Leq)?

    For anyone that is measuring sound, you’ve probably come across the term Leq or Equivalent Continuous Sound Level. But what is it and how can it help us when measuring noise with a sound level meter? Setting the Scene Imagine you work on a busy construction site that is operating all day. You have diggers, cranes, trucks and other ...


    By Cirrus Research plc

  • An experimental investigation of the sound level produced by bulldozers with various maintenance schedules

    This study was made to understand and evaluate the effect of maintenance on noise production from bulldozers through experimental measurements of sound levels in a large open cast mine. Assessment of sound pressure levels at each periodic maintenance interval revealed that maximum sound level reduction was achieved at 1000 h maintenance schedule. For other periodic maintenance intervals, ...


    By Inderscience Publishers

  • 50th anniversary of world`s first sound level meter

    Sound Level Meter Celebrates 50th Anniversary 2010 is the year we celebrate the 50th anniversary of Type 2203, the mother of all sound level meters. It was the world’s first precision hand-held and transitorised sound level meter. Produced for 21 years, it sold a record number of 17300 units. With its upgrades Type 2204 (Impulse time constant) and 2209 (peak detector), it accounted for a ...

  • Nottinghamshire County Council Chooses Casella Sound Level Meter Kits

    When Nottinghamshire County Council needed to upgrade its 20-year-old noise monitoring equipment, it made sense to choose two of the latest high performance 63x series sound level meter kits from previous supplier, Casella - leading global specialist in occupational health and environmental risk management solutions Nottinghamshire County Council is the Minerals and Waste Planning Authority ...


    By Casella

  • Are Those Inexpensive iPad Sound Measurement Apps Any Good?

    Are those inexpensive iPad sound measurement apps any good? Are they as accurate as a properly calibrated $2,000 type 2 sound level meter? Let's review three separate studies, and an article: Study #1 In early 2014, NIOSH reviewed 192 sound measurement apps. NIOSH concluded, ...

  • Noise, sound, decibels, hearing

    A decibel–a measure of sound. Like all short answers, this one leaves out a lot. When we hear a sound, its because our brain has received a nerve impulse from the nerve cells in the Inner Ear, which consist of a bone, called the Cochlea because it resembles a snail shell. These cells have long “hairs” that project into fluid inside the cochlea. There is a hole in the cochlea ...

  • Biofuels not as green as they sound

    Untitled Document EEB Position Paper on the Draft Directive on the promotion of the use of biofuels for transport and the Draft Directive amending Directive 92/81/EEC with regard ...

  • Measuring level of crude oil case study

    MonoScan provides an economical ultrasonic solution for measuring level of crude oil in one of Kaliningrad's well known oil fields. The Eastern Gorino oil field located in Gorino, Kaliningrad near the border of Lithuania, contains 11 oil wells and is capable of producing 200 tons of crude oil per day. The Kaliningrad Geological Oil & Gas company, which owns the field, sought a solution for ...

  • Measuring level of chemical solutions case study

    MonoScan provides a non-contact ultrasonic answer for measuring the level of chemical solutions in KunMing Chemical company. KunMing Qingshang Chemical is China's leading provider of a variety of chemical products. The company produces several types of chemical solutions such as, Ammonium Chloride (NH4CI), Niter (KNO3) and more. These solutions are stored in large vessels and need to be carefully ...

  • Tackling Office Noise – The Sound Investment

    Open offices or shared offices can offer great benefits in terms of communication but they can also present challenges. We’ve all had problems with noise in the office - the incessant chatter of your colleagues ruining your concentration; people shouting over you when you are trying to have a conversation on the phone; perhaps even maintenance or construction work going on next door. ...


    By Pulsar Instruments plc

  • Research & development of sound quality in lifts

    The Consortium Orona S. Coop. (manufacturer of lifts), Mondragon Goi Eskola Politeknikoa (MGEP) S. Coop. (Engineering Faculty of Mondragon University) and Ikerlan S. Coop. (Research Centre) have formed a consortium and established a stable working group of engineers to investigate the Sound Quality in Orona’s lifts. MGEP, Ikerlan and Orona MGEP, the ...

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you