Center 32 Instruction Manual

32
SOUND LEVEL METER
CENTER TECHNOLOGY CORP.
4F, NO.415, Jung-Jeng Rd., Shu-Lin Dist., New Taipei City 238, Taiwan
E-Mail:center@centertek.com
http://www.centertek.com
Analog display: 30 segment bargraph
Resolution: 2dB
Display updata: 100 mS
Time weighting: FAST , SLOW
Level ranges: Lo: 30 - 90 dB
Med: 50 - 110 dB
Hi: 70 – 130 dB
Accuracy: ±1.4dB (under reference conditions)
Dynamic Range: 60 dB
Alarm Function: "
limit of range.
"
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)
Operation Temperature: 0 to 40°C (32 to 104°F)
Operation Humidity:
10 to 90%RH
Storage Temperature:
-10 to 60°C (14 to 140°F)
Storage Humidity:
10 to 75%RH
Dimension / Weight: 258 55 ×
Accessories:
battery, Instruction manual, Windscreen, Tool box.
Measurement Preparation
1. Battery capacity indicator:
When operating the unit on battery, periodically check this indicator to
determine the remaining battery capacity.
Batteries Partly
Batteries Good
Depleted
GCA000032-02000
" is show when input is more than upper
" is show when input is Less than lower limit
×25mm ( 10.2" 2.2" × ×1.0") / Approx. 185g
Replace Batteries
Safety Information
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.
Environment Conditions:
Altitude up to 2000 meters
Ÿ
Relatively humidity 90% max.
Ÿ
Operation Ambient 0 ~ 40°C
Ÿ
Explanation of Symbols:
Attention! Refer to operation instructions.
Comply with EMC.
When servicing, use only specified replacement parts.
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.
Specifications
Standard Applied: IEC61672-1 Class2
Frequency Range: 20Hz ~ 8KHz
Measuring level Range: 32 ~ 130dB
Frequency Weighting: A / C
Microphone: ½ inch electret condenser microphone
4 digits
Digital Display:
Resolution: 0.1dB
Display updata: 0.5 sec.
2. Battery Loading:
Remove the battery
cover on the back and
insert a 9V Battery.
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
Maintenance
Attention!
Repairs or servicing not covered in this manual should only be performed
by qualified personnel.
Cleaning
Periodically wipe the case with a dry cloth. Do not use abrasives or
solvents on this instrument.
(94dB, 1KHz Sine wave )
9V battery