33
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 k
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
852 - 795
-0.3
7. Technical Data
