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7. Technical Data
Feature Values
Sensor: ½ inch electret condenser measurement microphone
Overall measurement range: 30 to 130 dB
Level ranges: 30 to 80 dB
50 to 100 dB
80 to 130 dB
Auto range: 30 to 130dB
Frequency range: 31.5 Hz to 8 kHz
Frequency weighting: A/C
Reference frequency: 1000 Hz
Backup impedance of microphone: 1 kΩ at 1 kHz
AC/DC output AC: 1V RMS at end scale deflection; output impedance approx.
100 Ohm
DC: output 10 mV/dB; output impedance approx. 1 kOhm
Absolute pressure dependency: -1.6*10
-3
dB/hPa
Time weighting: 125 ms (Fast) or
1 s (Slow)
Accuracy: ± 1.0 dB (under reference conditions: 94dB at 1kHz)
Display: LCD
Digital display: 4 digit LCD display, 13mm high
Resolution: 0.1dB
Display refresh: 0.5s
Analog display: 50 segment bar graph
Resolution: 1dB
Display refresh: 100ms
Battery: 9V Block (6F 22)
Battery life Approx. 50 hours (alkaline manganese)
Tripod thread: ¼ inch
Operating temperature: 0 to +40°C
Operating humidity: 10 to 90 %RH
Storage temperature: -10 to +60°C
Storage humidity: 10 to 75 %RH
Housing material: ABS
Mains connection: For 8V mains unit 0554 1084
Temperature dependancy table
Absolute pressure dependancy
Altitude in metres above s.l. Pressure p in mbar Correction in dB
0 - 250 1013 - 984 0.0
>250 - 850 983 - 915 -0.1
>850 - 1450 914 - 853 -0.2
>1450 - 2000 852 - 795 -0.3
7. Technical Data
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