PCE Instruments PCE-322ALEQ User manual

SOUND LEVEL METER
INSTRUCTION MANUAL

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1. 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:
⚫Environment conditions
① Altitude lower than 2000 meters
② Relatively humidity ≤90％RH
③ Operation Ambient 0 ~ 40°C
⚫Maintenance & Clearing
① Repair or servicing not covered in this manual
should be performed by qualified personnel.
② Periodically wipe the case with a dry cloth. Do not
use solvents or harsh chemicals on this
instrument.
⚫ Safety symbols
Comply with EMC
2.FUNCTIONS DESCRIPTION
This Sound Level Meter is designed for noise project;
quality control; illness prevention and cure and all kinds of
environmental sounds measurement. It is applied to the
sounds measurement at factory; school; office; traffic
access and household, etc.
⚫This unit confirms to the IEC61672-1 CLASS2 for
Sound Level Meters.
⚫MAX & MIN measurements
⚫Over range display
⚫Under range display

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⚫A & C Weighting
⚫FAST & SLOW response
⚫Analog AC/DC outputs for connection to frequency
analyzer or X-Y shaft recorder
3. SPECIFICATION
Standard applied: IEC61672 -1 CLASS2
Accuracy:±1.4dB
Frequency range:31.5HZ ~ 8KHZ
Dynamic range:50dB
Memory:32700
Level ranges: LO:30dB~80dB
Med:50dB~100dB
Hi:80dB~130dB
Auto:30dB~130dB
Frequency weighting: A/C
Time weighting: FAST ( 125ms ), SLOW ( 1s )
Microphone: 1/2 inch electret condenser microphone
Display: 4 digits LCD display with a resolution of 0.1dB
Display Update: 2 times/sec.
MAX hold: Hold the Maximum reading
MIN hold: Hold the Minimum reading
HOLD: Hold the readings
Alarm function: “OVER” is when input is more than upper
limit of range “UNDER” is when input is
less than lower limit of range.
Analog output: AC/DC outputs from earphone outlet
AC=1Vrms ,DC=10mV/dB

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Data output: USB data traffic
Auto power off: Meter automatically shuts down after
approx. 15 minutes of inactivity.
Power supply: One 9V battery, 006P or NEDA1604 or IEC
6F22.
Power life: About 30hours
Operation temperature and humidity:
0°C~40°C,10％RH~90％RH
Storage temperature and temperature:
-10°C ~+60°C，10％RH~75％RH
Dimension: 280 (L) x 95 (W) x 45 (H) mm
Weight : 329 g
Accessories: Instruction manual, battery, screwdriver,
3.5mm dia. earphone plug, windscreen,
software, USB cable.

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4.NAME AND FUNCTIONS
When you measure at wind velocities of >10m/ s, use the
wind protection on the microphone.
1. Rec
2. Setup
3. Backlight
4. Fast/Slow
5. A / C
6. Max / Min
7. Hold
8. Level
9. Power
10. 9 VDC power supply / mini USB interface / analogue
output / calibration screw

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MAX: Maximum indication
MIN: Minimum indication
OVER: Out of range indication (value too high)
UNDER: Out of range indication (value too low)
FAST: Fast response
SLOW: Slow response
dBA: A-weighting
dBC: C-weighting
88 – 188 : Range selection
Battery indicator:Battery low
FULL: Memory full
REC: Data are recorded
Auto Power On/Off
„Setup“ key activated / deactivated
„REC“ button

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DATALOGGER function
Press “REC” button after it power on, the display will show
“REC” to start Data Recording，press the button again to exit
the record (Note: In order to avoid data error, please don’t
power it off under REC condition, when the REC function is
deleted then it can power off).
Adjusting DATALOGGER response
Press the button continuously before power it on，then
press ,it will be displayed as following: Press ’LEVEL’
button to adjust sample time, press ‘HOLD’ button to hold the
setup.
Data zero function
Press the “REC” button continuously before power it on，
loosen the
button when the display showing’CLR’ after the meter
power on,which indicates that the data in DATALOGGER has
been deleted.

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“SETUP” button
The time chip adjustment
Press‘SETUP’button and then power it on，when‘TIME’
symbol displays then loosen‘SETUP’， the meter will be
under time adjustment mode，at the time the display will show
the date as following:
Press the‘SETUP’button second time, the display showing：
The display showing “minute” adjustment mode, press
‘LEVEL’ to make the adjustment，press ‘HOLD’ to keep the
setup；
Press the‘SETUP’button third time, the display showing：

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The display showing “hour” adjustment mode, press (h-
P=P.M,h-A=A.M)
‘LEVEL’ to make the adjustment，press‘HOLD’to keep the
setup；
Press the‘SETUP’button fourth time, the display showing
The display showing “date” adjustment mode, press
‘LEVEL’ to make the adjustment，press ’HOLD’ to keep the
setup；
Press the ‘SETUP’ button fifth time, the display showing：
The display showing “month” adjustment mode, press
‘LEVEL’ to make the adjustment，press ‘HOLD’ to keep the
setup；
Press the ‘SETUP’ button sixth time, the display showing：
The display showing “year” adjustment mode, press
‘LEVEL’ to make the adjustment，press ‘HOLD’ to keep the
setup；

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Only if you need to factory reset the “TIME” should the
following seventh step be used. Press “POWER” to end setup
and restart to verify settings.
Press the ’SETUP’ button seventh time to reset to factory
settings, the display showing:
Press ‘HOLD’ to keep the setup；time and date have returned
to factory setup.
When the battery is exhausted or replaced, if the time can’t
be adjusted then please initialize the time chip first.
USB communications setting:
Turn on the meter, connect the meter with the computer
correctly, choose the software COM3（COM4）,then press
‘SETUP’ , ‘ ‘ disappears from the display to indicate and
disable auto power off, that the USB data is transmitting.
Auto Power ON/OFF
Press ‘SETUP’ , ‘ ‘ disappears from the display to indicate
you have disabled auto power off.
“FAST/SLOW” button: