Sound Level Meter - Maxtech
Sound Level Meter - Maxtech
Sound Level Meter - Maxtech
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Integrating Datalogging <strong>Sound</strong> <strong>Level</strong> <strong>Meter</strong>s<br />
NIST it<br />
Enables the Use of One Instrument to<br />
Analyze “A”, “C” or Linear Weighted<br />
<strong>Sound</strong> <strong>Level</strong>s Using a Choice of<br />
Exchange Rates<br />
• User-Controlled Logging:<br />
The user is in ultimate control<br />
of what is logged, displayed<br />
and printed, selecting from<br />
SPL, Leq, LavQ, TWA,<br />
Lmax,Lmin,LDN, CNEL,<br />
Pa2Hrs, SEL, exceedance<br />
levels, and time information<br />
•Wide Selection of Studies:<br />
Manual-,automatic-, or<br />
threshold-triggered studies<br />
provide the user with versatile<br />
control<br />
• Response and Weighting<br />
Options:<br />
The 2900 provides fast, slow,<br />
peak and impulse response<br />
with “A”, “C”, or Linear<br />
weighting<br />
• Integration and Datalogging<br />
Capabilities<br />
• Battery-Protected Memory<br />
• Optional Octave Filter<br />
•Printer/Computer Interface<br />
• Optional Parallel Interface<br />
Model<br />
2900<br />
®<br />
MODEL 2900 SPECIFICATIONS<br />
Standards ANSI S1.4-1983, Type 2; IEC 651-1979, Type 2; IEC 804-1985, Type 2<br />
Measurement 20-140dB in seven 60dB ranges<br />
<strong>Meter</strong> only: 30 to 140 dBA. With Filter Sets: 0 to 140 dB (Other levels possible<br />
with optional microphones;noise floor varies depending on microphone type and<br />
filter selection)<br />
Exchange Rates Integrations may be performed with 3,4,5 or 6 dB exchange rate<br />
Microphones Removable precision 0.5" pre polarized condenser (electret) microphone is<br />
standard<br />
Preamplifier Directly accepts 0.50-inch microphone. Input impedance is greater than 1 Gohm<br />
in parallel with 47pF. Removable, the pre-amp will drive up to 100 feet of cable<br />
with no signal loss<br />
AC Output 3.16V RMS at full scale. (3.8V RMS maximum) 3.2 Kohm output impedance.<br />
1<br />
⁄8 " phone jack<br />
DC Output 0 to 1.00V DC; 60dB span. Each 0.167 change equals 10dB. 1 Kohm output<br />
impedance. 3.5mm phone jack<br />
COMM Output RS-232 serial output to printers or computers. Selectable data rates of 300<br />
through 19200 baud. ASCII character format. Optional parallel printer interface<br />
Temperature range<br />
Operating -10°C to +50°C<br />
Operating Humidity 0 to 95%, non-condensing DC Output<br />
0 to 1.00V DC; 60dB span. Each 0.167 change equals 10dB. 1 Kohm output<br />
impedance. 3.5mm phone jack<br />
Effect of Magnetic Fields A magnetic field of 1 Oersted (80A/m) at 60 Hz produces a maximum<br />
reading of 40dB on Linear weighting<br />
Effect of Electrostatic Fields Negligible<br />
Batteries<br />
Two 9V alkaline batteries will provide approximately 16 hours of continuous<br />
operation (9 hours with optional filter set).<br />
S<br />
Catalog No. Model Description Price<br />
QS2900 2900 Type 2 (General Purpose) Integrating/ $2,005.00<br />
Datalogging <strong>Sound</strong> <strong>Level</strong> <strong>Meter</strong><br />
Accessories<br />
QS138644 QC-10 Calibrator for Model 2900 435.00<br />
QS2010 OB100 Optional Octave filter:1/1 865.00<br />
QS1389941 OB300 Optional Octave filter:1/1 or 1/3 1,780.00<br />
QS2012 QS-ONE 56-999 software with cable 545.00<br />
QS2013 56-999 Serial interface cable 95.00<br />
QS2014 56-875 Parallel cable 143.00<br />
NISTSD4 — NIST Traceable Certificate with Data 285.00<br />
<strong>Sound</strong> <strong>Level</strong><br />
Davis Inotek Instruments<br />
www.davis.com<br />
1149
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