Sound Level Meter - Maxtech

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Precision Integrating Sound Meter & Calibrator NIST it Modern microprocessor technology and an efficient practical design make this instrument extremely versatile and easy to use, at a very reasonable price. Both manual and automatic octave band analysis are provided by the optional filter sets. The Model 1800 also can be interfaced with the analysis of occupational, environmental, and other noise measurements. Precision accuracy, outstanding features and versatility in a durable lightweight housing, coupled with the highest quality and support make the Model 1800 the first choice in sound level meters for virtually any application. • Type 1 accuracy for precision noise measurement and statistical analysis • For industrial, community, R & D, and audiometric applications • Easy to read LCD digital readout plus additional Quasi-Analogue display • AC and DC outputs for recording • RS-232 digital outputs to printers, computers, and NL-15 data logger • Modular design allows choice of 1/1 and combination 1/3-1/1 octave filter sets • Optional accessory allows vibration measurement and analysis • Direct readout of SPL, Leq, SEL, Peak, Impulse, Lmax, Lmin, Levels and Run Time • NIST Certification Included ® S Sound Level Catalog No. Model Description Price QS138180022 1800-20 Precision Integrated SLM with $3,535.00 QC-20 calibrator Options QS1389941 OB300 Octave Band Filter, 1/3 - 1/1 1,780.00 QS2010 OB100 Octave Band Filter, 1/1 865.00 QS1389944 VA-508C Vibration assembly for vibration velocity 980.00 displacement & acceleration NISTSD4 — NIST Traceable Certificate with Data 285.00 SPECIFICATIONS MODEL 1800 SOUND LEVEL METER Range Meter only: 20 to 140dB. With filter sets: 0 to 140dB. (Other levels possible with optional micro phones; noise floor varies depending on microphone type and filter selection) Standards Meets or exceeds ANSI S1.4 Type 1 and relevant section of IEC 651 Type 1 (1) and IEC 804 Microphones Removable precision 1 ⁄2" prepolarized condenser (electret) microphone is standard. Optional 1 ⁄2" and 1" condenser and other microphones available Preamp Removable; input impedance is greater that 1G ohm in parallel with 2 pf. Preamp will drive up to 100 feet of cable Polarization Regulated 200VDC ±2% when using ordinary condenser microphones, switched off when using prepolarized condenser (electret) microphones Meter Input Input impedance is 1 MΩ in series with 0.1 MFD. Maximum sinusoidal input voltage is 10V RMS AC Output 3.16V RMS at full scale (60dB). (3.8V RMS maximum) Output impedance is 32K Ω DC Output 0 to 1.00VDC; 60dB span. Each 0.167V change equals 10dB Print Output Serial output to printers or computers using RS-232 voltage levels. Selectable baud rates of 300, 600, 1200, or 2400. ACSII character format Data Output Output transmission of real-time digital data st rate of 16 times per second using RS-232 voltage levels to Quest data loggers Detector True RMS; 63dB pulse range Overload Indication Displays overload condition via annunciator on LCD and annotates them on printout Frequency Range 4Hz (-3dB) to 50kHz (-3dB) or linear weighting Frequency Weighting A, B, C, and Linear. When using OB-100 or OB-300 filter sets, any one of the weightings Networks may be selected Display 3 1 ⁄2 Digit :Liquid Crystal Display with additional Quasi-Analogue 60dB indicator in 2dB incre ments. Level display to 0.1dB resolution. Time display of Min:Sec or Hr:Min. Annunciators for battery check, hold, run, and overload indications Meter Response Slow, fast, impulse, and peak (onset time constant less than 50µs.) (Peak measurements may be A, B, C or Linear) Modes of Operation As an integrated sound level meter, calculates sound pressure level (SPL), maximum level (MAX), minimum level (MIN), sound exposure level (SEL), and equivalent level (Leq). Also measures peak and impulse levels Temperature Range Operation: -10°C to +50°C. Storage (less batteries): -20°C to +60°C Effect of Magnetic Fields A magnetic field of 1 Oersted (80A/m) at 60Hz produces a maximum reading of 40dB on linear weighting Effect of Electrostatic Fields Negligible as long as protection grid is kept on microphone Batteries Two 9-volt batteries (NEDA 1604A-Alkaline) will provide approximately 20 hours of continuous operation (10 hours with optional filter sets) at 25°C Tripod Mount Threaded insert on back of meter accepts a standard 1 ⁄4-20 tripod mounting screw Size 3.3" x 8.2" x 1.8" (84 x 208 x 47mm) not including preamp height Weight 24 oz. (680 grams) including preamp, half-inch microphone, and batteries MODEL OB-300, 1/3 - 1/1 OCTAVE FILTER SET Standards ANSI S1.11, Order 3 AND IEC R225 Center Frequencies 33 frequencies from 12.5Hz to 20kHz Frequency Selection Full manual control or automatic sequential stepping through each frequency band Power Source Sound Level Meter Size 3.3" x 4.2" x 1.8" (84 x 107 x 47mm) Weight 9 ounces (255 grams) MODEL OB-100, 1/1 OCTAVE FILTER SET Standards ANSI S1.11, Order 3 and IEC R225 Center Frequencies 10 frequencies from 31.5Hz to 16kHz Frequency Selection Full manual control or automatic sequential stepping through each frequency band Power Source Sound Level Meter Size 3.3" x 2.8" x 1.8" (84 x 71 x 47mm) Weight 6 ounces (170 grams) 1150 Davis Inotek Instruments www.davis.com
Sound Level Meter NIST it The CEL-400 Sound Level Meters are an ergonomic, modular and effective interpretation of the classic integrating instrument. The instruments are available as either direct read out (CEL-440) or datalogging (CEL- 480) versions, in either Type 1 or 2 configurations. Both instruments provide read out and data storage (CEL- 480) of full 1/3 Ocatve Band Frequency levels, with an effective dynamic range of 20 to 140 dB(A). Instruments can display information as either numerical values or frequency graphs on screen, including specific information on derived acoustic values. Power comes from 4 "AA" size batteries, which give the user up to 25 hours of continuous operation. Each sound level meter kit includes the instrument, a calibrator, windscreen and manual in a hard case. The CEL-480 kit also includes software and a download cable. All instruments meet the relevant ANSI S1.4 and IEC standard requirements. • Advanced modular technology provides a choice of models and a clear upgrade path for future proof operation • A choice of broad band and frequency analysis modes offers a solution to a wide range of the most common noise measurement problems • Manual or automatic operation depending on model • Intuitive user control with icon based keypad and graphic screen • On board memory eliminates the need for hand written reports • Download capability to printers and computers • Multi-lingual operation SPECIFICATIONS Electro-Acoustic Applicable Standards IEC 1672 199X class 1 and 2, ANSI S1.4, DIN 45657, IEC 1260 class 1 Slow, Fast and Impulse Time Weightings Frequency weightings rms & peaks A, C and Z (unweighted) Amplitude weighting Q=3 plus one from Q=4 or 5 or none Dynamic span 70 dB per range Measurement ranges 140, 130, 120, 110, 100, 90 dB for FSD Noise floor 20 dB (A) type 1, (25 dB (A) type 2)
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