PCE Instruments PCE-MSM 4 User manual

PCE-MSM 4, PCE-322A, PCE-323 Sound Level Meter

User Manual

User manuals in various languages (français,

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русский, 中文) can be found by using our

product search on: www.pce-instruments.com

Last change: 7 November 2022

v1.0

English

 
 © PCE Instruments 
 
 
Contents 
1Safety notes........................................................................................... 1 
2Specifications........................................................................................2 
3Delivery scope.......................................................................................2 
4Device description ................................................................................ 3 
4.1 Keyboard description........................................................................................................ 4 
4.2 Display description........................................................................................................... 5 
5Switching the meter on and off ...........................................................6 
5.1 Making a measurement.................................................................................................... 6 
6Automatic power off ............................................................................. 9 
7Data logging (PCE-322A, PCE-323 only)...........................................10 
7.1 Clearing the memory.......................................................................................................10 
7.2 Setting the memory interval.............................................................................................10 
8Replacing the battery..........................................................................10 
9Bluetooth connection (PCE-323 only)...............................................11 
10 PC connection.....................................................................................11 
10.1 Driver..............................................................................................................................12 
10.2 Software operation..........................................................................................................14 
11 Mains adaptor......................................................................................16 
12 Analogue output.................................................................................. 17 
13 Calibration ........................................................................................... 17 
14 Contact.................................................................................................18 
15 Disposal ...............................................................................................18 
 
 
 

1 Safety notes

Please read this manual carefully and completely before you use the device for the first time. The

device may only be used by qualified personnel and repaired by PCE Instruments personnel.

Damage or injuries caused by non-observance of the manual are excluded from our liability and

not covered by our warranty.

•The device must only be used as described inthis instruction manual. If used otherwise,

this can cause dangerous situations for the user and damage to the meter.

•The instrument may only be used if the environmental conditions (temperature, relative

humidity, …) are within the ranges stated in the technical specifications. Do not expose

the device to extreme temperatures, direct sunlight, extreme humidity or moisture.

•Do not expose the device to shocks or strong vibrations.

•The case should only be opened by qualified PCE Instruments personnel.

•Never use the instrument when your hands are wet.

•You must not make any technical changes to the device.

•The appliance should only be cleaned with a damp cloth. Use only pH-neutral cleaner,

no abrasives or solvents.

•The device must only be used with accessories from PCE Instruments or equivalent.

•Before each use, inspect the case for visible damage. If any damage is visible, do not

use the device.

•Do not use the instrument in explosive atmospheres.

•The measurement range as stated in the specifications must not be exceeded under

any circumstances.

•Non-observance of the safety notes can cause damage to the device and injuries to

the user.

We do not assume liability for printing errors or any other mistakes in this manual.

We expressly point to our general guarantee terms which can be found in our general terms of

business.

2 Specifications

Sound level ranges

Low 30 ... 80 dB

Medium 50 ... 100 dB

High 80 ... 130 dB

Auto 30 ... 130 dB

Dynamic range

50 dB

Resolution

0.1 dB

Accuracy

±1.4 dB (under reference conditions

@ 94 dB, 1 KHz)

Accuracy class

IEC61672-1 Class 2

Frequency range

31.5 Hz ... 8 kHz

Time rating

FAST (125 ms)

SLOW (1 s)

Frequency weighting

A and C

Microphone type

1/2" electret condenser

Display

4-digit LC display with backlight

Display update

2 Hz

Data memory

32700 measured values (only PCE-322A,

PCE-323)

Memory interval

1 ... 59 s

Analogue output via 3.5 mm jack connection

1 Vrms/dB AC (impedance 100 Ω)

10 mV/dB DC (impedance 1 kΩ)

Data interface

USB, Bluetooth 4.0 (PCE-323 only)

Bracket

3/8" connection

Functions

MIN, MAX, HOLD

display when

exceeding or falling below the sound level

Automatic power off

after approx. 15 minutes of inactivity

Power supply (battery)

9 V block battery (typically 30 operating

hours)

Power supply (mains operation)

primary: 100 ... 240 V AC, 50 / 60 Hz, 0.2 A

secondary: 9 V DC, 0.5 A

Operating conditions

0 ... +40 °C, 10 ... 90 % RH, non-

condensing, altitude <2000 m

Storage conditions

-10 ... +60 °C, 10 ... 75 % RH, non-

condensing

Dimensions

304 x 82 x 40 mm / 12.0 x 3.2 x 1.6 in

Weight

350 g / <1 lb (without battery)

3 Delivery scope

1 x sound level meter

1 x mini tripod

1 x screwdriver

1 x carrying case

1 x 9 V block battery

1 x user manual

1 x mains adaptor

The software can be downloaded here:

https://www.pce-instruments.com/english/download-win_4.htm

4 Device description

No.

Description

Microphone with windscreen

Connections for power supply, mini-USB, analogue outputs, calibration screw

Display

Keyboard

Battery compartment (rear)

4.1 Keyboard description

No.

Description

"REC" key to start recording

"SETUP" key to open the settings, to activate the PC interface, to disable and enable

automatic power off and to start the Bluetooth connection (PCE-323 only)

Switching the backlight on and off

"FAST SLOW" key to switch between fast and slow time rating

"A / C" key for switching between frequency weightings A and C

"HOLD" key to freeze the display

On / off key

"LEVEL" key for setting the sound level range

"MAX MIN" key to activate the "MIN / MAX" function

4.2 Display description

No.

Description

Current measured value is below the set measurement range

Currently displayed measured value is the highest measured value

Bluetooth connection active (PCE-323 only)

Currently displayed measured value is the lowest measured value

Time rating "Fast" - fast (125 ms)

Time rating "Slow" - slow (1 s)

Current measured value is above the set measurement range

Measurement range scale

Date and time

Measured value

Automatic power off is active

Battery is discharged and must be replaced

File recording is started (PCE-322A, PCE-323 only)

Data memory is full (PCE-322A, PCE-323 only)

Frequency weighting A

Frequency weighting B

Display is frozen

Level range is set automatically

5 Switching the meter on and off

To switch on the meter, press and release the on/off key once. To turn off the meter, press and

hold this key until the display turns off.

5.1 Making a measurement

Before you can carry out a measurement, the meter must be set according to the respective

measuring task.

5.1.1 Setting the frequency weighting

To set the frequency weighting of a measurement, press the "A/C" key to select between

frequency weighting A and C. The respective frequency weighting is shown by "dBA" and "dBC"

on the display.

5.1.2 Selecting the sound level range

Press the "LEVEL" key repeatedly to select between the sound level ranges 50 ... 100, 80 ... 130,

30 ... 80 and automatic. The selected sound level range is displayed on the scale. If a range is

exceeded or undercut, this is indicated by "Over" or "Under".

5.1.3 Setting the time rating

To set the time rating, press the "FAST SLOW" key. With the "Fast" setting, the time weighting is

125 ms and with "Slow", it is 1 s. The setting is shown directly on the display.

5.1.4 Lowest and highest measured value

To display the highest or lowest measured value, press the "MAX MIN" key. Either the highest or

the lowest reading is now displayed. To resume the normal measurement, press the key

repeatedly until "Max" and "Min" are no longer shown on the display.

Note: Only one function is active at a time. If you switch between the individual functions, the

last value is reset.

5.1.5 Freezing the measured value

To freeze the displayed reading, press the "HOLD" key. HOLD" appears on the display. To

resume the measurement, press this key again.

5.1.6 Backlight

To switch on the backlight, press the backlight key. To switch off the backlight, press the key

again.

5.1.7 Setting the date and time

To set the date and time, first switch off the meter. Then press and hold the "SETUP" key and

switch on the meter. As soon as "TIME" is flashing, you can release the "SETUP" key. The

currently set date is now displayed. You can then select the minute, hour, day, month and year

one after the other using the "SETUP" key and set them with the "LEVEL" key. When setting the

hours, h-P stands for PM and h-A for AM.

Home view

Setting the minute

Setting the hour

Setting the day

Setting the month

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