Sper Scientific 840029 Sound Meter Digital - Manual (Page 6)

Display 3 1/2 digits, 3/4" LCD
Functions dB ( A and C Frequency Weighting),
Response (Fast, Slow),
Max. Hold
AC/DC Output
Measurement Range 30-70 dB, 60-100 dB, and 90-130 dB
40 dB on each step, with overload indicator
Resolution 0.1 dB
Accuracy ± 1.5 dB
Frequency 31.5 Hz to 8,000 Hz
Microphone 1/2" condenser microphone.
Response (Fast/Slow) Fast (F): t = 200 ms
Slow (S): t = 500 ms
Internal Calibration Built-in internal calibration on front panel.
Internal 94 dB / 1 kHz square wave generator
Output Signal AC: 0.5 Vrms corresponding to each range
step. DC: 0.3~1.3 VDC, 10 mV per dB.
Output impedance is 600 ohm.
Output Terminal 3.5 mm diameter phone jack
Operating Temp. 32~122°F (0~50°C)
Operating Humidity Less than 90% RH
IV. SPECIFICATIONS
Power Supply One 9V battery, heavy duty or alkaline type
Power Consumption Approximately DC 6 mA
Weight 10 oz.
Dimension 8 1/8" x 3 1/8" x 1 3/8"
Included Accessories Instruction Manual, 9V battery, calibration
screw driver, and hard carrying case
Optional Services &
Accessories 840029C NIST Traceable Cert. of Calibration
840031 Acoustical Calibrator
840091 Wind Screen
CE Compliant Yes
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