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Environmental Noise

unwanted outdoor sound.


Showing results: 46 - 50 of 50 items found.

  • RF Amplifier

    SA1012 - Hangzhou Softel Optic Co., Ltd.

    *Forward path use import low noise push pull amplify module or GaAs push pull module,2 Power-Double module or GaAs amplify module are used as output stage, Output level is stable and nonlinear index is good, import high index amplify module are used on return path, It's distortion is little and SNR is high.*It is more convenient to debug because of plug-in(or adjustable) duplex filters, plug -in fixed(or adjustable)equalizers, plug-in output splitters and scientific and rational on-line detection ports.*The equipment can work steadily outdoor under bad environmental condition because of waterproof aluminum case, high reliability switching power supply and lightning protection system.

  • Sound Pressure Level Logging Software

    RT-Capture 3 - WavCapture

    RT-Capture 3 is a SPL (Sound Pressure Level) logging software supporting a number of national and international standards. It is intended for self-governance of sound levels during music events, concerts and festivals.RT-Capture 3 has octave and third octave logging implemented for environmental noise control.RT-Capture has integrated networking for web-server over LAN and remote control and display of up to 250 units.RT-Capture uses a standard PC-soundcard and supports measurements from two microphones.RT-capture records a log-file with SPL-data (such as Leq, LAmax, LCpeak) and make compressed sound recordings of the audio signal.The log-file can be watched graphically and audio can be played back from a cursor point in the graph. The SPL-measurement is validated to the IEC 61672 standard and other international standards.Protocol according to several national standards can be printed. A scheduler can be set to email the log-file during logging.

  • Sound Level Indicators

    PCE Instruments

    A sound level meter is a measuring instrument used to assess noise or sound levels by measuring sound pressure. Often referred to as a sound pressure level (SPL) meter, decibel (dB) meter, noise meter or noise dosimeter, a sound level meter uses a microphone to capture sound. The sound is then evaluated within the sound level meter and acoustic measurement values are shown on the display of the sound level meter. The most common unit of acoustic measurement for sound is the decibel (dB); however, some sound level meter devices also determine the equivalent continuous sound level (Leq) and other acoustic parameters. With a portable sound level meter, industrial hygiene and workplace safety professionals can measure sound levels in multiple locations to ensure environmental conditions fall within recommended exposure limits (RELs). Some sound level meter devices can be permanently installed for continuous monitoring of sound levels at a work or job site.An important attribute to consider when searching for a suitable sound level meter is its type or class. The type or class of a sound level meter defines the device's accuracy as per American National Standards Institute (ANSI) or International Electrotechnical Commission (IEC) guidelines. Typically, "type" is the grade according to the ANSI S1.4 standard, whereas "class" is the grade according to the IEC 61672 standard. There are two types or classes assigned to sound level meters: type 1 / class 1 or type 2 / class 2. For assessing noise in basic industrial, commercial, educational, recreational or residential applications, a type 2 / class 2 sound level meter usually will suffice. For precision-grade assessments often made in a laboratory, a type 1 / class 1 sound level meter primarily is used. PCE sound level meter products are lightweight, easy-to-use and manufactured in accordance with the highest industrial standards.

  • Emissions Testing

    TUV Rheinland Inc

    One of the main aims of environmental protection is to suppress harmful emissions or reduce them as much as possible. Typical examples of emissions include gaseous and particulate pollutants emitted by furnaces, odor emissions and particulate emissions from waste tips. Help protect the climate and ask us to measure the emissions created by your facilities.Our experts will test your facility – from large-scale firing plants to biogas plants, from waste incinerators to crematoria – according to national and international standards. We can also help you reduce noise pollution, measure exhaust gases and harmful emissions, and modernize your facilities.With their extensive experience, our experts can analyze your processes and identify potential improvements. As a measurement body registered throughout Germany and internationally accredited according to ISO 17025 we are authorized to perform the legally required measurements for you.Your facilities need testing? Ask us about our emission testing.

  • High and Low Temperature Humidity Chamber

    GDJS/GDJW - Lisun Electronics Inc.

    •The chamber is produced by SUS304 Steel, the temperature keeping material is produced by Polyurethane hard foam and ultra-fine fibre glass, the doorframe heat insulated by Double high temperature aging silicone rubber door sealing strip. •The temperature controller is used by Korean TEMI display in English/Chinese and German Siemens PLC, it can be communicated to PC via RS-232. The temperature accuracy is 0.1℃ and humidity is 0.1%R.H •The temperature sensor is platinum PT100 Ohms/MV resistor •The heating system is full separately system which produced by Nickel chromium alloy electric heating type heater •The cold system is applied by fully enclosed fan cooled single-stage and cascade refrigeration mode, the compressor is from France TECUMSEH brand which can allow you get after sales support from many countries •The cyclical system is applied by High temperature low noise air conditioning type motor and Multi blade centrifugal wind wheel •The safety self-protection function include Electric leakage, short circuit, over temperature, motor overheating, compressor pressure, overload, over-current protection •Working Power: AC380V±10% 3phases and frequency 50Hz/60Hz •Working Environmental: Temperature is 5℃~+30℃  Humidity ≤85%R.H

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