CIRCUIT-TEST
DMS-4420
DMS-4420
2
To ensure proper use of this Sound Level Meter, we
recommend that you read and follow this manual
carefully.
This unit conforms to the IEC61672 Type2, ANSI S1.4
Type2 for Sound Level Meters.
This Sound Level Meter has been designed to meet the
measurement requirements of safety Engineers, Health,
Industrial safety offices and quality control in various
environments.
Ranges from 30dB to 130dB at frequencies between
31.5HZand 8 KHZ .
Display with 0.1dB steps on a 4 digits LCD.
With two equivalent weighted sound pressure levels,
A and C.
1. GENERAL DESCRIPTION &
SPECIFICATIONS
a. Display:4 digits LCD with maximum/minimum,
Resolution:0.1dB, Display Update:0.5 sec.
b. Standard applied:IEC651 Type2, ANSI1.4 Type2.
c. Frequency range:31.5Hz~8KHz.
d. Measuring level range:A Weighting 30 ~130dB.
C Weighting 35~130dB.
e. Frequency weighting:A/C.
f. Microphone:1/2 inch Electret condenser
microphone.
g. Time weighting:FAST(125mS),SLOW(1 sec).
h. Level ranges:30 ~130dB(Auto Range).
i. Accuracy:
1.5dB.
j. Dynamic range:50dB.
k. MAX/MIN:Hold readings for the Maximum and
Minimum value.
