5. Technical specifications
IEC 61672-1 CLASS 2
Measurement frequency range
31,5 Hz ...... 8 KHz
1,4 dB
Measurement level A weighting
30 dB .... 130 dB
Measurement level C weighting
30 dB .... 130 dB
LO: 30 dB ... 80 dB
MED: 50 dB ... 100 dB
HI: 80 dB ... 130 dB
30 ..... 130 dB
fast (125 ms) or slow (1S)
4-digit LCD
0,1 dB resolution updated every 0,5 seconds
1 dB display steps
50 dB display range
updated every 50 ms
13 mm diameter, electret condenser microphone
AC: 1 Vrms
DC: 10 mV DC/dB
Datalogger sample rate Memory
1x/second to 1x/minute
32 kbyte for to 33000 values
0 .... 40° C
10 …. 90%
-10 .... + 60° C; 10 … 75 %RH
9 V
approx 30 hours
80 x 280 x 50 mm
350 g
case, USB-interface cable, Software for Windows
98/2000/XP/VISTA/WIN 7 (32 & 64-Bit), battery, 9 V-
AC-Adaptor, adjustment screwdriver, 3m cable
extension, instruction manual and Tripod
6. Replacing the battery
When the entire display shows the low battery “ “ indication, the 9 V battery has fallen to a
critically low voltage level and should be replaced as soon as possible.
1. Take off the battery cover at the button side of the instrument,
2. remove the old battery and replace the new 9 V battery.
3. make sure that the battery is installed to the right position and connected to the proper
polarisation with the battery snap.
4. put on the battery cover and let it snap in to secure.
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