Precision Sound Level Meter Level Meter Decibel Distortion Analyzer Hp Quest Electronics Radio Shack Sound Level Meter Sound Level Meter 33-2050 Decibel Sound Level Meter Realistic Sound Level Meter Noise Dosimeter Noise Level Decibel Meter Hp 8903B Audio Analyzer Bruel Kjaer Technical Review Audio Precision System Sound Level Meter Type Audio Distortion Analyzer Digital Sound Level Meter 33-2055 Quest Sound Level Meter Quest Technologies Sound Level Meter Calibrator Radio Shack 33-2055 Octave Filter Bruel Kjaer Sound Level Meter Digital Sound Level Meter Radio Shack Digital Sound Level Meter Spl Meter Integrating Sound Bruel Kjaer Model Extech Sound Level Meter Radio Shack Sound Level Integrating Sound Level Meter Sound Noise Meter Sound Analyzer Sound Level Meter Kit Bruel Kjaer Precision Sound Level Meter 334A Distortion Analyzer Bruel Kjaer Sound Level Meter Type Noise Meter Distortion Meter Digital Sound Meter Analog Sound Level Meter Db Meter Flutter Meter Radio 1565-B Hp 334A Distortion Analyzer Impulse Sound Level Meter Dual Domain Agilent Audio Analyzer Distortion Analyzer Simpson Sound Wow Flutter Meter Sound Level Meter Model Sound Pressure Level Bruel Kjaer Microphone Radio Shack Sound Level Meter 33-2050 Sound Level Calibrator Sound Pressure Level Meter Extech Digital Sound Level Meter Vintage Sound Level Meter Real Time Analyzer Dual Domain Audio Noise Level Meter Sound Technologies Calibrator Kit Sound Noise Level Meter 1565-B Sound Level Meter Sound Pressure Noise Analyzer Agilent Hp 8903B Audio Analyzer Digital Sound Level Meter Model Qc-10 Calibrator Kjaer Microphone Cel Sound Level Meter Audio Measurement Sound Calibrator Microphone Type Decibel Analyzer Type Sound Pressure Meter Audio Analyzer 20Hz-100Khz Analyzer 20 Hz To 100 Khz Distortion Measurement Quest Electronics Model Acoustic Calibrator Level Recorder 4230 Calibrator Instruments Inc Bruel Kjaer 2203 1613 Octave Filter Heathkit Audio Vintage Bruel Harmonic Distortion Meter Audio Test Type 2 Sound Level Meter Audio Precision Conditioning Amplifier Sound Tester Sound Level Meter Cat Permissible Sound Level Audio Spectrum Analyzer Precision Integrating Sound Level Meter 8903A Audio Analyzer Bruel Kjaer Type Ono Sokki 215 Sound Level Meter Hp 8903A Audio Analyzer Octave Band Distortion Analyzer Tested Brüel Kjær Audio Oscillator Sound Technology Radioshack Digital Sound Level Meter Microphone Power Supply Radio Genrad Signal Analyzer 8903B Audio Analyzer 20 Hz 8903B Audio Analyzer 20Hz-100Khz Sper Scientific Impulse Precision Type S2a Model 33-2055 Noise Measurement Rta Meter Model 33-2055 Audio Analyzer Genrad Audio Signal Larson Davis Stereo Level Bruel Kjaer Measurement Audio Tester Dose Meter Distortion Measurement System Measurement System Digital Decibel Meter Noise Generator Audio Frequency Audio Level Signal Tracer Logging Dosimeter Audio Generator Bruel Kjaer Technical Review No 2 Analyzer Tested Frequency Analyzer Impedance Meter Gr General Radio 1 3 Octave Microphone Preamplifier 339A Distortion Model 2700 Digital Sound Survey Meter Level Indicator Beat Frequency Oscillator Opt 001 Speaker Frame Basket Repair Recone Analog Display Audio Signal Generator Tenma Microphone Calibrator Measuring System Scott Instrument Nti Hp Agilent Keysight Kjaer Sound Level Meterradioshack Sound Level Meter Sound Level Audio Test Equipment Microphone Cartridge Vintage Test Equipment Electronic Test Equipment Neutrik Sound Level Meter 200 30 Day Warranty Agilent Hp Amplifier Type Analyzer Analyzer Model Audio Control Audio Monitor Audio Tested Audio Tested Sets B K Bk Precision Bruel And Kjaer Bruel Kjaer Calibrator Capacitor Condenser Microphone Digital Audio Digital Multimeter Dual Channel Ear Extension Cables Filter Fluke Gauges General Radio Generator Gold Line
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For auction is a Bruel& Kjaer 4947 ½ inch pressure-field microphone with Type 2671 DeltaTron(same as ICP) preamplifier. Valid from 8 Hz to 10 ... morekHz. Item was tested with a 250Hz pistonphone and a FFT analyzer with ICP input then compared to a new 4947 microphone and it works. It was last used in 2007 then stored in a control environment. The microphone diaphragm is in good condition. The 2671 is also in good condition(see picture) Item comes with a B&K box. No cal sheet. Shipping to lower 48 states via USPS priority mail. Please use Ebay message if you have questions. Thanks for looking. Prepolarized Pressure-field 1/2-inch Microphone Type 4947 is optimised for coupler measurements. For example, in connection with telephone and hearing aid testing. It is prepolarized, which enables connection to CCLD input conditioning. Uses· Coupler measurements· Hearing aid testing· Telephone testing· Connect to CCLD input Features· Sensitivity: 12.5 mV/Pa· Frequency: 8– 10 000 Hz· Dynamic range: 17.5– 160 dB· Temperature: 30 to 125˚C( 22 to 257˚F) Polarization: 0 V Use of pressure-field microphones For measurements to be made in small. Closed couplers or close to hard reflective surfaces, a pressure-field microphone is the best choice. An application that illustrates such usage is where a set of pressure sensing microphones are positioned at different points across an aircraft wing. A complete picture of the pressure variations across the wing surface can then be established. Pressure-field A pressure-field is characterised by a sound pressure that has the same magnitude and phase at any position within the field. Microphone Pressure Sensitivity refers to this type of field. Pressure fields can be found in enclosures or cavities that are small compared to the wavelength. Such fields occur in couplers applied for testing of earphones or calibration of microphones. They also occur in most types of sound level calibrator and in pistonphones. Robustness. Ageing and assembly The mi
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895
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149
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AR854 Digital Sound Level Meter 1. Products Description: I.Peature: Sound level meters measure sound pressure level and are commonly used in noise pollution ... morestudies for the quantification of almost any noise. But especially for industrial, environmental and aircraft noise. II.Specification: SPECIFICATIONS Microphone Capacitance Microphone Measuring Range 30~130dB Accuracy ±1.5dB Frequency Range 20HZ~8.5KHZ Frequency Weighting A/C USB Computer Connect USB Data Analysis offline Data Store 10000 stock AC\DC Output √ Low Battery Indication √ Over Range Indication √ Resolution 0.1dB Time Weighting Selection Fast/Slow Max Hold Function √ PACKING INFORMATION Power AA*4 battery(with external power receptacle) Product Net Weight 300g Product Size 210*72*32mm Packing Gift box Standard Quantity Per Carton 12pcs Standard Carton Size 52.5*45.5*34cm Standard Carton Gross Weight 13kg 2. Free Shipping Details: TO USA.Canada,Australia,West and North Europe: DHL.FEDEX,TNT or EMS,4-7 Business days TO Other Countries: DHL.FEDEX,TNT or EMS,5-8 Business days Please check our store for more products and any questions please feel free to contact us via email.We will reply you at soonest. Welcome to my eBay store http:stores.ebay.com/graigarinstruments General Information Payment Payment Payable To Paypal account PayPal tmx1984@live.cn Shipping Policy Delivery Time USA. Canada,Australia, West and North Europe 4-7 Business Days. Other countries 5-8 Business Days Shipping address Please. Make sure to provide us with correct, precise, and detailed shipping Address. Send Time Items will be shipped within 1 to 3 business days upon payment received or cleared. Note If you don't receive items over 30 business days. Please notify us. Return Policy We appreciate your business and offer an instant 7 days return policy. 7 days after receive the item) The returned item has to be in its original condition. We are able to refund your money without shipping cost. Contact us For anything about product. Price, shipping or order status, please fe
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Vintage Bruel and Kjaer Prepolarized Condenser Microphone Cartridge Type 4155-used For your consideration we have here a Prepolarized Condenser Microphone Cartridge from Bruel and Kjaer. it is a Type 4155 and was last calibrated July of 1986 and the paperwork is present. It has been carefully stored remaining in its hardwood box. On their website B& K assures us- A purchase that lasts All our microphones are precision-built in high-grade titanium and stainless steel. And they must all pass strict quality assurance checks. This ensures they will last for decades, and remain as sensitive as the day they were calibrated. The ability to measure correctly in all real-life conditions defines our microphones. We achieve this with precision handcrafting in our cleanroom production facilities. Followed by manual quality inspection. The result ... moreis long-lasting microphones that deliver trustworthy results every time. Satisfaction guaranteed! If you are not completely satisfied. You may return the item within 14 days of purchase for a full refund. Questions welcome. Items are usually shipped USPS by the next business day after payment is received. We often ship within one business hour of payment. Our eBay hours are Monday to Friday 10-6 Pacific. International customers. Please ask about shipping options before bidding. As part of our mission to reduce waste. 100% of packing materials are reused(except Priority Mail flat rate boxes) All items will be properly packed, but your foam packing peanuts may not match. If you are not happy with the item you've purchased. We will work to resolve the situation to your satisfaction. Please give us a chance to fix a problem before leaving feedback. Thank you for supporting NextStep Recycling!
Up for Sale Is a USED Picture is of the actual item(Condition and What is Included) Bruel& Kjaer Prepolarized Pressure-field Microphone Part# 4947/ 2644472 Uses: Coupler measurements Hearing aid testing Telephone testing Connect to CCLD input Features: Sensitivity: 12.5 mV/Pa Frequency: 8– 10 000 Hz Dynamic range: 17.5– 160 dB Temperature: 30 to 125˚C( 22 to 257˚F) Polarization: 0 V Retail: Over $700 Please Note: We only sell Authentic or Genuine Merchandise! Beware of counterfeit goods sold on E-Bay. If you do become a victim of someone selling you counterfeit product, Please report them to E-Bay as soon as possible. It will help make E-Bay a better market place for You as a buyer as well as for us sellers. ics.
PCB Piezotronics 426A10 1/2" ICP Preamplifier w/ 377B02 Microphone PLEASE READ THE FULL DESCRIPTION By bidding on this item you accept the terms stated below. Up for auction is a used PCB Piezotronics 426A10 1/2" ICP Preamplifier w/ 377B02 Prepolarized Microphone. This device appears to be new given its perfect cosmetic condition. However. We will list item this as used given that we cannot guarantee this. Please refer to the pictures provided below for more details on the condition of the item. Not for sale outside of the United States. We are unable to test this unit. This item was purchased from surplus. We see no outward reason that it will not function fully. However. Given that the we cannot it, this device will be sold as-is. We will not accept returns for this auction if it does not work to your satisfaction. By bidding ... moreon this auction. You are taking the risk that the item may not work. Only those items shown in the photos will be included in the auction. ATTENTION INTERNATIONAL BIDDERS: Import duties. Taxes, and Customs charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. It is illegal to falsify customs documentation by changing the value or marking items sold as"gift" We will not accommodate any such requests. Quick Stop Auctions. Inc. Feel free to ask questions via email or(540)381-3011- 25865. Powered by
For auction is a used Bruel& Kjaer 4189-A-021- ½-inch free-field microphone with Type 2671 preamplifier. 20 Hz to 20 kHz, prepolarized. Item was tested with a pistonphone/FFT analyzer and it works. Diaphragm is in good condition. It comes with a case(see picture) No cal sheet. Shipping via USPS priority mail. If you have any questions. Please let me know by using use Ebay message system. Thanks for looking. Type 4189-A-021 is designed for high-precision. Free-field measurements where a microphone with high sensitivity is required. Uses Precision sound measurement Premium class sound level meters Equipment complying with IEC 61672 class 1 Features Sensitivity: 50 mV/Pa Frequency: 20 Hz– 20 kHz Dynamic range: 16.5– 134 dB Temperature: 20 to + 80°C( 4 to + 176°F) Polarization: Prepolarized Use of free-field microphones At ... morehigher frequencies. Reflections and diffractions causes a pressure increase in front of the diaphragm of a microphone. If not corrected, for this would result in an increased output voltage. A free-field optimisation means that the frequency response of the microphone has been designed in such a way that the free-field response at 0 degrees incidence is flat. This microphone is optimised for use with the protection grid in place. Free-field microphones are commonly used for sound measurement in an anechoic chamber or far away from reflecting buildings. Etc. Another area for free-field microphones is for general electroacoustic measurements purposes like loudspeaker and microphone measurements. Type 4189 is suited for use in class 1 Sound Level Meters and for all high-precision acoustic measurements where a robust and stable free-field microphone with an upper frequency of 20 kHz is required. Manufacturing and stability A press-fitted. Stainless-steel diaphragm ensures superior long-term stability and mechanical robustness– Type 4189 will withstand the 1 m drop test of IEC 60068– 2– 32. All Brüel& Kjær Measuring Microphones are assembled in a clean room. This ensures
Vintage Bruel& Kjaer Prepolarized Condenser Microphone Model 4155 This is a Bruel& Kjaer Prepolarized Condenser Microphone Cartridge Type 4155 with the Calibration paperwork present and carefully stored by remaining in its hardwood box. On their website Bruel& Kjaer assures: A purchase that lasts" All our microphones are precision-built in high-grade titanium and stainless steel. And they must all pass strict quality assurance checks. This ensures they will last for decades. And remain as sensitive as the day they were calibrated. The ability to measure correctly in all real-life conditions defines our microphones. We achieve this with precision handcrafting in our cleanroom production facilities. Followed by manual quality inspection. The result is long-lasting microphones that deliver trustworthy results every time.
For sale is a used Bruel& Kjaer 2671 microphone preamplifier for pre-polarized microphone. It was tested with a functional microphone and a pistonphone and it works. These are the last few I have and it will be a while till next time I have some for sale. It comes with a damaged(with wrinkles on the diaphragm) free-field 4189 microphone which still outputs signal but cannot be calibrated. This microphone is included in the sale but only considered it as non-functional parts. You can replace it with a working microphone if you like. Item also comes with a box and cal sheets(see picture) but the cal sheet's microphone serial number does not match the one on the microphone. Shipping via USPS priority mail to lower 48 states. Please use Ebay message if you have any questions. Thanks for looking. Spec Diameter 1/2 Inch Optimised CCLD Connector ... moreat Preamplifier BNC Supply Voltage 28 V Max Output Voltage 7 V Max Output Current 19 mA Frequency Range 20-50000 Hz Attenuation Noise A-weighted. Typical 4 µV Noise 22 4 Hz to 300 kHz. Typical 15 µV Input Impedance 1.5||0.4 G Ω ||pF