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Sound level indicators
Here you will find industrial standard sound level indicators. With these portable sound level indicators you can carry out measurements quickly to gain control of a situation or to set the devices to take timed measurements. The sound level indicators is importan Sound level indicators has importance in all industries, especially by way of a mobile device which is able to assess office stress levels or street noise levelst for all industries, especially by using it as a mobile device which is able to assess office stress levels or street nois e levels. Often problems arise from noisy neighbours or if bars and restaurants are in residential areas and produce noise levels after 10pm in excess of what local laws permit. We, of course, can assess which sound level indicator you require in relation to the issue you have and the relating laws. We also have microphone extension cords (except for the PCE-999), tripods, calibrators and calibration certificates for all models. If you don't find the sound level indicators you are looking for, please contact us and we will help you find the best solution to suit your needs by calling our offices on: UK customers +44(0) 23 809 870 30 / US customers (561) 320-9162
and our technical staff will advise you regarding our measuring instruments.

Here you can see thermal cameras from these companies:

Sound Level Indicators by PCE-InstrumentsSound Level Indicators by Casella CEL Ltd.

At the following links you will find technical specifications for all our Sound level indicators:

   - PCE-222 Sound level indicators 
     (Includes internal sensors for sound, light, temperature and relative humidity)
Sound level indicators with internal sensors for sound, light, temperature and relative humidity.Sound Level Indicators by PCE-Instruments

- PCE-EM 886 Sound level indicators Sound level indicators with sound, light, temperature and humidity sensors, multimeter function.
  (S
ound level indicators with sound, light, temperature, humidity sensors and multimeter function)

Sound level indicators with sound, light, temperature and humidity sensors, multimeter functionSound Level Indicators by PCE-Instruments

- PCE-EM882 Sound level indicators
  (Sound level indicators includes sound, light, temperature and humidity sensors)

Sound level indicators with sound, light, temperature and humidity sensors.Sound Level Indicators by PCE-Instruments

- PCE-999 Sound level indicators  
  (Standard industrial sound level indicators, accurate to ±1.5dB)

Standard industrial sound level indicators, accurate to ±1.5dBSound Level Indicators by PCE-Instruments

- PCE-318 Sound level indicators
  (Measures from 26dB, accurate to ±1.5dB, analogue output)

Measures from 26dB, accurate to ±1.5dB, analogue outputSound Level Indicators by PCE-Instruments

- PCE-322 A Sound level indicators Sound level indicators similar to the PCE-999 but with internal memory.
  (Similar to the PCE-999 but with internal memory)

Similar to the PCE-999 but with internal memorySound Level Indicators by PCE-Instruments

- CEL-244 series Sound level indicators 
  (Sound level indicators with many functions (LAF, Leq, etc.), USB cable and software, last digital technology) 
 

Sound level indicators with many functions (LAF, Leq, etc.), USB cable and software, last digital technology, robust)Sound Level Indicators by PCE-Instruments

- CEL-620 series Sound level indicators 
  (Sound level indicators with internal memory, hi-res colour screen, automatic calibration)

Sound level indicators with internal memory, hi-res colour screen, automatic calibrationSound Level Indicators by Casella CEL Ltd.

- CEL-350 series Sound level indicators
  (Sound level indicators with internal memory / interface cable and multiple functions)

Sound level indicators with internal memory / interface cable and multiple functions complete software package.Sound Level Indicators by Casella CEL Ltd.

- SLT Sound level indicators
  (Sound level indicators with interface cable and multiple functions complete software package)

Sound level indicators with internal memory / interface cable and multiple functions complete software package. Sound Level Indicators by PCE-Instruments

- Sound level indicators for steady use
  (Sound level indicators for monitoring equipment and standard signlas production)

Sound level indicators for monitoring equipment and standard signlas production.Sound Level Indicators by PCE-Instruments

Sound level indicators taking a measurement in the street with a sound level indicator.

Sound level indicators measuring the noise level during the course of a shift.

Taking a measurement in the street with a sound level indicator. Measuring the noise level during the course of a shift.

General information for Sound level indicators

We have compiled an informative list of the important points in taking measurements with Sound level indicators:

 Terms / Directives                    Operation / Use                 Noise in the workplace

 

Sound level indicators: A. A-weighting
The sensitivity of human hearing depends on the frequency. Low and high tones are perceived with less precision than the tones in between. In the measurement of noise or sound this is taken into account and the frequencies contained within the sound are valued differently with respect to the A-weighting curve.
Sound readings are taken in decibels (dB) (A). The A-weighting curve is used primarily in the environmental and industrial sectors; the B and C curves are used for louder sounds and are less frequently used. The sound level indicators most commonly used for these measurements are the PCE-999 and the PCE-322A.


Sound level indicators: D. Decibel
The decibel consists of one tenth of a bel (B). A bel is defined as a logarithm of the bahaviour of two readings of the same type. It is used for the measurement of sound levels although the actual sound output is determined in relation to a specified reference intensity
Abbreviation: dB.
Calculation: LP = 10 * log (P / P0) in dB
where
P = sound output
P0 = specified reference intensity (typically, 10 - 12 Watt)


Sound level indicators: E. Equivalent continuous noise level (Leq)
The equivalent continuous noise level is an energy mean of the noise level averaged over the measurement period (T) and often regarded as an average level.
Its also part of a sound level over a duration of time (X) that describes a noise with duration D has the same value as a noise that has half the duration (D / 2), but for this it has a sound level of 3dB ( = 10 * log 2) higher (to take this measurement you require the PCE-353 sound level indicator.)
The Leq is calculated in this way:

Leq = q/log2 * log(1/T ( 10(log2/q)* Li * ti)

Li = unique event level
T = period of measurement (for example: 16 hours),
ti = duration of the unique event, the maximum level can't be increased by more than 10dB,
q = equivalence parameter or division by two. Provides the change of level, that is equivalent to a constant level to duplicate or divide by two the effective time. Normally at international level  q=3, corresponding to the energy equivalence.

Regular measurment of chance occurances with constant intervals (example, 1/10 or 1/100 s) the value can be occur analogically to the number of the chance value
Leq = q/log2 * log(1/N ( 10 (log 2/q)* Li)
where the symbols are exactly the same as in the previous equation.


Sound level indicators: I. Infrasound
Frequencies below 16 Hz (Hz = 1/s)


Sound level indicators: L. Level day-evening-night (Lden)
According to the proposed directives of the EU relating to "Measurement and treatment of environmental noise" for the index of produced noise: day/evening/night level. The evening hours are 19:00 to 23:00 o'clock, with a supplement of 5dB and at night from 23:00 to 7:00 o'clock, with a supplement of 10dB (for example, the sound level indicator serie-1900.)


Level day-night (Ldn)
Day-night average sound level is the average noise level over a 24 hour period. With it, different measurements can be taken at different times of the day.


Sound level indicators: M. Maximum level
Maximum value is a sound event also denoted as a peak sound. In sound bursts, it's easier to determine various peak points and establish a maximum average or extract the L1 percentile level.

Measurement level
The measured sound level calculated over a period of time in a measurement of noise which has certain noise level specifications be means of noise level corrections.  For these measurements it is advised to use sound level indicators with the Frequency analysis function.
Abbreviatons: RL (rating level), during daytime (LT); during nightime (LN) (in dB).
In American English  it is also referred to as Ldn frequency.  

Sound level indicators: P. Peak level
Maximum sound level reached in a sound burst, also called maximum level. Because of possible loud oscillations, it provides a better description of the average maximum level or the L1 percentile level.

Sound level indicators: S. Solid bodies
Sound that spreads and impacts with solid bodies such as ceilings and walls of buildings. This has high importance in the noise produced by the construction sector.

Sound pressure level
The magnitude of sound pressure of a source (px) relative to a level reference sound pressure (p0). L = 20 log (px/p0). It is expressed in decibels (dB), almost always compared with frequency value, for example, dB (A).

Sound energy
The physical energy of a source of radiated sound.

Sound event level (SEL)

(also LAE). Parameter largely related to the LAeq. With it isolated events can be determined (for example, air transit or passing traffic). The sound energy is normalized to a temporary duration of 1 second.

Sound TA
Technical indication for the protection against noise
General prescription administered by the Federal emissions law 26.8.98. In ruido TA value directives are determined that should be followed precisely to protect the public from the harmful effects of noise. Ruido TA has advanced in force to be used for installations with authorisation and for those that don't require authorisation.

Sound level indicators: T. Temporary value
To be able to follow oscillating sound levels in display instruments that were previously constant, different temporary constants are introduced: Fast, Slow, Impulse. Normally the temporary value that you should employ is prescribed.
Sound bursts are considered to have a more imbalanced frequency than sounds events of longer durations. For this reason, it has to be taken into account in the reading, the duration of the bursts by way of a temporary value. (source: UBA).

Topseller in Measuring Instruments

You are currently at: Home / measuring instruments and test equipmentSound level indicators

If you have any questions, call our offices on:
UK customers +44(0) 23 809 870 30
US customers (561) 320-9162

Below you will find an overview of the different product groups of measuring instruments

Absolute Humidity Meters
Accelerometers
Alert Meters
Air velocity meters
Analyzers (Colour)
Analyzers (Combustion)

Analyzers (Gas)
Analyzers (Lan)
Analyzers (Noise)
Analyzers (Oxygen)
Analyzers (Ozono)

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Conductivity Meters
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Durometers

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Flow Meters Gas
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Indicator Sound Level
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Instruments (Environmental)

Impedance bridges
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Measurement Devices (Force)
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Energy, Environmental, Gas, Gloss, Ground pH, PowerPressure, Radiation, Salt, Temperature)
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s
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Multimeters
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Phase rotation meters
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Resistance Testers
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Signal converters
Signal Level Analyzers
Single-parameter Photometers
Sound Level Meters
Systems for Environmental
Stethoscopes (electronic)
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Surface Thickness Meters

Tachometers
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Thermal stress
Thermal Imaging Cameras
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Thermocouples
Thickness Meters
Torque meters

Ultrasonic Flow Meters

VDE tester
Vibration Meters
Video endoscopes
Voltage meters
Weather Stations
Wood (humidity)

Below you will find an overview of the different product groups of scales and balances

 Accurate scales
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 Animal scales

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 Force meter

 Hanging scales

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 Industrial scales
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 Package scales
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Scales for people
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Weighing scales
 Weight indicator