Top 15 Frequently Asked Questions on the Sound Level Meter


Top 5 tips to buy a Sound Level Meter
Top 5 tips to buy a Sound Level Meter
What is Sound Level Meter

A sound level meter may well bean associate instrument accustomed to assess noise or sound levels by activity force per unit space. sometimes cited as a force per unit space (SPL) meter, dB (dB) meter, noise meter, or noise measuring device, a sound level meter uses an associate electrical device to capture sound.


The sound is then evaluated at intervals the sound level meter and acoustic activity values unit shown on the show of the sound level meter. the foremost common unit of acoustic activity for sound is that the dB (dB); but, some sound level meter devices besides verifying the equivalent continuous sound level (Leq) and varied acoustic parameters. With a conveyable sound level meter, industrial hygiene, and purpose safety professionals will live sound levels in multiple locations to verify environmental conditions fall at intervals counseled exposure limits (RELs).

Some sound level meter devices for a good place positive continuous viewing of sound levels at a touch or job electronic computer. a significant attribute to mull over once searching for an appropriate sound level meter is its sort or category. the type or category of a sound level meter defines the device's accuracy as per the yank National Standards Institute (ANSI) or International Electrotechnical Commission (IEC) tips. Typically, "type" is that the grade per the ANSI S1.4 standard, whereas "class" is that the grade per the IEC 61672 commonplace. There unit a try {of varieties|of sorts|of sorts} or categories appointed to sound level meters: sort one / category one or type a pair of / category pair of. For assessing noise in basic industrial, commercial, instructional, recreational, or residential applications, a sorta pair of / category pair of sound level meter usually can fulfill. For precision-grade assessments sometimes created in an especially laboratory, a sort one / category one sound level meter primarily is employed. Our sound level meter merchandise unit light-weight, easy-to-use, and created in accordance with the best industrial standards.


Top 15 Frequently Asked Questions on the Sound Level Meter
Sound Level Meter
Sound Level Meter
  1. Why square measure there category one and sophistication pair of the sound level meter?

  2. Min, scoop, and Peak – 3totally different values or not?

  3. Noise Dose

  4. Sound pressure level

  5. Octave Bands

  6. Time weight

  7. Frequency weightings

  8. LEQ

  9. Noise exposure

  10. Maintenance of the measurement instrumentation

  11. What is LEQ?

  12. What is the distinction between dB(A), dB(C), and dB(Z)?

  13. Definition of your time Weightings - quick, Slow, and Impulse

  14. Classification of Sound Level Meters

  15. What square measure octave bands (1/3 and 1/1) and what square measure they used for once measurement sound?


How to use a sound level meter?

When employing a sound level meter for analysis or classification of let´s say environmental and traffic noise, it's not solely necessary to own precise instrumentality. For sure, the sound level meter used ought to be minimum category II and in tag condition, however primarily necessary is to avoid influences from the encompassing to receive repeatable and trustable results.


What will that mean?


The sound mensuration will be influenced by some factors:

1. The Operator

2. Wind and wetness

3. Temperature and Pressure

4. Vibrations


Why is that the Operator influencing the sound measurement?


By touching the housing of the sound level meter, the noise will be caused, which influences the mensuration results. additionally, as garments were worn by the operator. typically the body of the operator works as a reflective surface. to attenuate noise reflections, a sound level meter housing kinded|is created} during a conic form wherever the mike is found. additionally, the sound level meter ought to be mounted on a stand in order that the operator will be within the background whereas measuring. additionally, extension mike cables will want to have extremely remote measurements. fashionable sound level meter ar equipped with a data logging perform. that produces it less difficult to not have the operator to be gift throughout the mensuration. it's doable to predetermined all necessary parameters at the sound level meter.


What is the Influence of Wind and Humidity?


To avoid or minimize the sound mensuration error caused by wind or flow, a contemporary sound level meter ever is supplied with a foam ball (sponge around the microphone). This foam ball in addition protects the mike against mud and little wetness particles. this is often vital by doing noise measurements in areas with a high ratio (>80 %). High wetness rates have influences on the standard of the mike. For doing sound measurements in terribly wet or dirty areas, PCE Instruments provide outside kits. The sound level meter and also the mike particularly protected for out of doors measurements.


Why is it necessary to look at Temperature and Pressure?


Every sound level meter possesses a technical specification wherever you'll be able to realize the largest temperature the instrument will be used with. As any check instrument heat will injury the circuits. however, the most purpose to avoid is sharply dynamic temperatures, as a result of condensation will be caused and this is often reality to a negative influence on the mike. A smaller cause for sound mensuration errors is that the close pressure. It influences the sensitivity of the microphone. however, the pressure changes happening should be large(±200 mbar).


What is the Influence of Vibration on sound measurements?


When you wish to use a sound level meter next to vibration sources, it's suggested to safeguard the meter or the stand feed by mistreatment anti-vibration materials for having additional reliable results.


When considering the on top of the mentioned facts, you're ready to receive rather more stable results by employing a sound level meter. For terribly special sound measurements like peoples sound dose or measurements on protecting walls about, you have got to follow the ISO normative, created certainly measurements:

- General standards IEC 651 and ANSI S1.4

- Sound effecting humans ISO 2204

- Noise at operating places ISO 9612


By Prasad Nidhi

Dhanbad Lab Instruments India Pvt Ltd

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