32
SOUND LEVEL METER
CENTER
TECHNOLOGY CORP.
4F,
NO
.
415, Jung-Jeng Rd., Shu-Lin
Dist., New
Taipei
City
238, Taiwan
E
-
:
center
@
centertek
.
com
http:
//
www
.
centertek
.
com
GCA000032
-
02000
Safety Information
n
o M
i
t
a
c
n
u
r
u
t
a
s
l
nI
Environment Conditions:
Introduction
This Sound Level Meter has been designed to meet the measurement
requirements of safety Engineers, Health, Industrial safety offices and
sound quality control in various environments.
Both AC and DC signal outputs are available from standard 3.5mm coaxial
socket, suitable for a frequency analyzer, level recorder, FFT analyzer,
graphic recorder, etc.
Read the following safety information carefully before attempting to operate
or service the meter.
Use the meter only as specified in this manual; otherwise, the protection
provided by the meter may be impaired.
Ÿ
Altitude up to 2000 meters
Ÿ
Relatively humidity 90% max.
Ÿ
Operation Ambient 0 ~ 40
°
C
Explanation of Symbols:
Attention! Refer to operation instructions.
Comply with EMC.
When servicing, use only specified replacement parts.
Operation Temperature:
Operation Humidity:
Storage Temperature:
Dimension / Weight:
Accessories:
0 to 40
°
C
(32 to 104
°
F)
10 to 90%RH
258 55
10.2
”
2.2
”
×
×
25mm
(
×
×
1.0
”)
/ Approx. 185g
battery, Instruction manual, Windscreen, Tool box.
-10 to 60
°
C
(14 to 140
°
F)
Measurement Preparation
Remove the battery
cover on the back and
insert a 9V Battery.
2. Battery Loading:
Repairs or servicing not covered in this manual should only be performed
by qualified personnel.
Attention!
Periodically wipe the case with a dry cloth. Do not use abrasives or
solvents on this instrument.
Cleaning
Digital Display:
4 digits
Analog display:
30 segment bargraph
Time weighting:
FAST , SLOW
Resolution: 0.1dB
Display updata: 0.5 sec.
Resolution: 2dB
Display updata: 100 mS
Level ranges:
Lo: 30 - 90 dB
Accuracy:
±1.4dB (under reference conditions)
Med: 50 - 110 dB
Hi: 70 – 130 dB
Dynamic Range:
60 dB
Alarm Function:
“ ” is show when input is more than upper
limit of range.
“ ” is show when input is Less than lower limit
of range.
AC Output:
1 Vrms at FS (full scale)
FS: means the upper limit of each level Range.
DC Output:
10mV / dB
Power Supply:
One 9V battery, 006P or IEC 6F22 or NEDA 1604
Power Life:
Approx. 60hrs (alkaline Battery)
Storage Humidity:
10 to 75%RH
Maintenance
When operating the unit on battery, periodically check this indicator to
determine the remaining battery capacity.
1. Battery capacity indicator:
Batteries Good
Batteries Partly
Depleted
Replace Batteries
9V battery
Specifications
Standard Applied:
Frequency Range:
IEC61672-1 Class2
20Hz ~ 8KHz
Measuring level Range: 32 ~ 130dB
Frequency Weighting:
A / C
Microphone:
½ inch electret condenser microphone
Calibration Procedures
(1) Press and hold button and then power on
the meter, LCD display “CAL 94dB” symbol.
(2.) Insert the microphone housing carefully into the
insertion hole of the calibrator.
(3.) Press or button to increase or decrease
number.
(4.) Press button to finish. To abort during a
setup process, press power button to cancel.
Note:
Our products are all well calibrated before
shipment.
Recommended recalibration cycle: 1 year.
Using a standard Acoustic Calibrator
(94dB, 1KHz Sine wave )
