Integrating-averaging sound level meter
5Pages

SC-20e Integrating sound level meter Applications • Environmental acoustics • Leisure and community noise evaluation • Sound power • Vehicle and traffic noise User friendly • Measures all parameters simultaneously: LS, LF, LeqT, Leq1’’, LCpk, L1, L5, L10, L50, L90, L95, L99, maximum values, duration of measurement and Leqt with programmable t. • 23 – 140 dB measurement range • One single range (no range changes) Features • Type 1 integrating sound level meter meeting EN 60651 and EN 60804 • A and C frequency weightings • Allows you to store the measurement results in the memory and save all the measured parameters second by second for 3 hours • Equipped with AUTOSTORE recording for long-duration (1 week) Leq measurements • Includes software to transfer all measured and recorded parameters to a PC • Detachable preamplifier for use of the extension cable (CN-010) and the semipermanent outdoor kit (TK-1000) The SC-20e is a user-friendly, high performance Type 1 integrating- averaging sound level meter. It measures all functions simultaneously and displays the one selected on the screen when the function selector is activated. Once one measurement is completed, they can all be consulted along with their maximum values and percentiles. The SC-20e needs no range changes as its single range encompasses the entire measurement range. The SC-20e can be connected to a computer. The SC-20e is supplied with a programme for PC or compatible unit that permits communication with the SC-20e, graphical and numerical presentations, storing results on the hard disk, statistical analyses and so on. The unit can also be connected to a printer to print out the values of the function selected. At the end of each printout a summary appears with the value of all the functions and a statistical analysis. The DC output of the SC-20e maintains a constant tension equivalent to the value displayed on screen. This output allows you to connect the unit to a graphic recorder. The AC output gives you the preamplifier output signal without frequency weighting. This output can be used for the calibrated recording of the measured signal on DAT or magnetic tape. The CESVA SC-20e integrating-averaging sound level meter allows you to make RECORDINGS of the measured data, store MEMORIES of the final results of the measurements and make AUTOSTORE recordings of the equivalent continuous level. A RECORDING stores all the measured data second by second. The MEMORY saves only the final result of a measurement. The AUTOSTORE recordings allow you, for a programmable period, to store consecutive equivalent continuous level measurements corresponding to an integration time, which is also programmable. All the data stored in the sound level meter’s internal memory (recordings, memories and autostore recordings) may only be retrieved by using the PC software designed for the SC-20e sound level meter. The SC-20e preamplifier is removable, allowing it to be detached and placed at a distance from the SC-20e using the extension cable. There is also an outdoor kit (TK-1000) for taking measurements in the open air. D_SC20E_v0024_20100222_ENG

Villar, 20 - 08041 Barcelona (Spain) - Tel. (34) 934.335.240 - Fax. (34) 933.479.310 - e-mail: info@cesva.com - www.cesva.com Standards and regulations The SC-20e complies with the following standards. • EN 60651:94 (A1:94) (A2:01) type 1, EN 60804:00 type 1 • IEC 60651:01 type 1, IEC 60804:00 type 1 • ANSI S1.4:83 (A1:01) type 1, ANSI S1.43:97 (A2:02) type 1 • .mark. Complies with the 73/23/EEC low tension standards and EMC 89/336/EEC amended by 93/68/EEC. Measurement range • LF, LS, LE, LeqT, Leq1’’ and Leqt Limits: 0 – 137 dBA Upper crest factor limit 3: 130 dBA • LCpk Limits: 70 – 140...

Villar, 20 - 08041 Barcelona (Spain) - Tel. (34) 934.335.240 - Fax. (34) 933.479.310 - e-mail: info@cesva.com - www.cesva.com SC-20e Technical specifications Serial interface • 9-pin sub-D connector • Velocity: 9600 bauds • Data bits: 8 bits • Stop bits: 1 bit • Parity: No Microphone • Model C-130: ½” Condenser microphone. Polarization: 200 V. Nominal capacity: 22,5 pF. Nominal sensitivity: 16 mV/Pa in reference conditions. • Model C-250: ½” Condenser microphone. Polarization: 0 V (prepolarized). Nominal capacity: 17,0 pF. Nominal sensitivity: 46,4 mV/ Pa in reference conditions. Time...

Villar, 20 - 08041 Barcelona (Spain) - Tel. (34) 934.335.240 - Fax. (34) 933.479.310 - e-mail: info@cesva.com - www.cesva.com SC-20e Accessories Standard accessories FNS-030 Case PVM-05 Windscreen SFT-021 Program for PC CNR-232 PC connection cable 9-volt battery Optional accessories CB006 Class 1 acoustic calibrator TR-40 Tripod. Maximum height 1.1 meters TR050 Tripod. Maximum height 1.55 meters TR001 Tripod support. PR003 3 m extension pole TK-1000 Outdoor kit CN-USB Serial-USB converter CN-003 Microphone extension cable 3 m CN-010 Microphone extension cable 10 m CN-030 Microphone...

Villar, 20 - 08041 Barcelona (Spain) - Tel. (34) 934.335.240 - Fax. (34) 933.479.310 - e-mail: info@cesva.com - www.cesva.com SC-20e Software application Graphical display of data Data copy to other applications Statistical display of data The SC-20e is supplied with the software application that allows: • Real time data acquisition • Generation of graphics for the creation of the personalized reports • Data obtaining and data exportation • Configuration of all the parameters for the autostore recording mode • Graphic, statistical and numerical display of the data files This software...