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Sound meter series CR-800-C (class I and II) |
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Sound meters of the classes I and II are designed for the use in the labor security sector and for environmental measurements. The sound meters of the series CR-800 C are a selection of meters of great value that offer all the benefits of the standard international meters and meet the international norms for sound measurements but the keep their simple handling. The series complies with the DIN IN 61672-1 2003 quality norm and with the present effective standards for the sound meter. |
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- USB interface to transmit data - Software for Windows 95/98/2000/XP - internal memory of 16 Mbit - Standard values: Leq, Lmax, Lmin, - wideband measurement for time and frequency evaluations - 0.1 resolution of dB - graphical LCD screen - possibility of use with filters (third and octave filters optional) - measurement range between 14 and 140 dB (according to model and filter) - batteries - robust housing - Electret microphone of precision of 1/2 " |
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Software | |
The sound meter can be used to make simple measurements or long ones. The sound measurement values transmitted via USB interface to the PC or laptop can be evaluated in several ways. The software helps to transmit data to other data processing programmes. Diagrams of the temporary pass, columns and peak presentations. The zoom function makes it possible to analyse concrete values. The software is also suitalbe to program the sound meter for long time measurements.
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The software recovers the data that are stored in the sound meter automatically in a standard relation so that the user can adapt it to his/her needs. The calibrations are kept so that the reliability of the measurement values is documented. The collected data can be exported in different formats. The collection of data in octave and third octave bands is possible whenever the sound meter is equipped with the corresponding filter option. The wideband measurements are represented in tables and graphs. |
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In the software package you can see data about the usual auditory protectors. This data bank is reviewed with each new version of software and can be updated by every user. The values of damping given by the auditory protectors manufacturer are put in relation to the measurement data and a numerical and graphical representation of their efficiency is made. The user can define a limit level. With this a preselection of the auditory protection is calculated.
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If requested, the software makes reports with graphs. The information shows the measurement values with all the indications of the used sound meter and the calibration, as well as additional information (place, conditions of measurement, person) that the user will be able to complete with the aid of a form. The parameters demanded by labour health within the evaluation level are indicated and calculated within 8 hours (level of exposion to the noise). This is calculated for each measurement, so that the user can define the significant limit values. The software offers a special information form for the auditory protectors selection.
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The data of the sound meter can be displayed and modified from the PC. The software works with every PC with an operating system from Win 95 including NT and XP. The installation is done with a CD.
In order to connect the sound meter to a PC, it is necessary to have a free interface of series USB or to use a USB adapter for USB interface. The program files need a 6MB memory in the hard disk. |
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Models | |
Models of the series CR-800-C: clase II: - model CR-812C: standard sound meter - model CR-822C: sound meter with octave band filter - model CR-832C: sound meter with class 2 third and octave band filter class I: - model CR-811C: standard sound meter - model CR-821C: sound meter with octave band filter - model CR-831C: sound meter with class 1 third and octave band filter |
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Technical specifications | |
Standards | DIN EN 60651: 1979 class 1 or 2 DIN EN 60804: 1985 class 1 or 2 DIN EN 61672 - 1: 2003 class 1 or 2, group X filter use: DIN EN 61260: 1998 class 1 UNE-EN61672-1:2005 |
Microphone | 1/2 " microphone |
Temporary evaluation | F („Fast“), S („Slow“) , I („Impulse“), Peak |
Frequency evaluation | channel 1 A, C o Z (no value) channel 2 peak (C valued) |
Bisection parameter |
Q = 3 (for Leq measurements) |
Evaluation levels | Leq, LAleq, max. interval level |
Measurement ranges | wideband class 1: 21 ... 140 dB, peak: 143 class 2: 25 ... 140 dB, peak: 143 filter octaves: 19 ... 140 dB (Z) thirds: 14 ... 140 dB (Z) |
Stored data |
: date, hour, duration, wideband, LCPeak, LAF, LAS, LAI, LCF, LCS, LCI, LZF, LZS, LZI, LAFmax, LASmax, LAImax, LCF max, LCSmax, LCImax, LZFmax, LZSmax, LZImax, LAFmin, LASmin, LAImin, LCFmin, LCSmin, LCImin, LZFmin, LZSmin, LZImin, LAeq, LCeq, LZeq, LAE, LCE, LZE, LAleq, LCleq, LZleq, LAFTeq
L0.1 up to L99.9 (possibility of five values at a time) one level 1 s: LAeq, LCeq, LZeq |
Filters | octave band: 10 octave bands form 31 to 16,000 Hz (±2 dB), LAeq, LCeq, LZeq third bands: 29third filters form 25 to 16,000 Hz (±2 dB), LAeq, LCeq, LZeq |
Memory capacity | 16 Mbits allow: - 1,300 wideband measurements - 770 octave band measurements - 330 third band measurements |
Noise level | wideband class 1: 18 dB (A) class 2: 20 dB (A) filter octave band: 12 dB (Z) for 1kHz third band: 7 dB (Z) for 1 kHz |
Automatic measurements | recording / automatic storing: 1, 5, 10, 15, 30 min, 1, 8, 12 h, o user defined repetition measurement: 2 ... 999 measurements (only for wideband) with the corresponding tempo. syncronisation |
Display |
almost analogical graphical LCD screen; it indicates deviation of the rank, battery, conection to external network, evaluation of time or frequency, duration of the measurement, brief real time Leq (wideband), in graphical indicatorr of the band of third or octave, kept values, ranges, adjustments |
Power | 2 x alkaline batteries- 1,5 V LR6 / AA |
Battery life | approx. 30 h (wideband), > 20 h (filter) |
Net connection | 12 V - 16.5 V DC for100 mA |
Environmental conditions | - 10 ... + 50 °C / < 95 % r.H |
Connection | - RS 232 cable - AC output: no evaluation - DC output: valued |
Software / requirements | MS Windows 95 or superior, 6 MB hard disk, 266 MHz processor |
Dimensions | class 1: 340 x 75 x 25 mm class 2: 300 x 75 x 25 mm |
Weight | 450 g |
Electromagnetic data | EN 55022: 19988 EN 61000 - 4 - 2: 1995 EN 61000 - 4 - 3: 2002 EN 61000 - 4 - 8: 1994 |
Delivery content |
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Optional |
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