Brannan 13/481/0 User manual

User's Manual
Mini Sound Level Meter – 13/481/0
Please read this user manual thoroughly before use
and keep it safe for future reference.
1. General Description
This Sound Level Meter is designed to provide basic measurements of noise levels (dBA) for Health and
Safety Engineers, Industrial Safety Officers in a variety of industrial environments such as factories, schools,
kitchens, garages and construction sites.
2. Features
•Provides continuous readings of sound pressure in dBA
•Stores Maximum and Minimum readings
•Hold function
3. Basic User Maintenance
This device contains no user serviceable parts and repairs should only be performed by qualified personnel.
Clean by wiping the unit with a soft dry cloth, do not use abrasives or solvents on this instruments.
The battery will need to be replaced periodically, see section 10.
4. Safety
Read the following safety information carefully before attempting to operate this meter.
Use the meter only as specified in this manual; otherwise, the readings provided by the meter may be
impaired.
Suitable conditions for use:
Altitude up to 2000 metres
Storage and operating conditions: -20 to 60℃, RH≤90％（Non-Condensing）
EMC compliant (IEC61672-1 Class 2)
5. Specifications
Applied standards IEC61672-1 Class 2
Accuracy ±1.4dB
Frequency range 31.5Hz ～8KHz
Dynamic range 50dB
Measuring level range
30dB ～130dB
Frequency weighting
dBA
Microphone 1/2 inch electret condenser
Display 3 1/2 digits，
Resolution 0.1dB
Data update
：
0.5 sec
Max Hold MAX
Min Hold MIN
Screen Lock HOLD
Auto power off
Automatic shut down after approx. 15 minutes of inactivity.
Power supply
One 9V battery, 006P or IEC 6F22 or NEDA 1604.
Battery life > 30 hours
Operating conditions - 20
℃
～60
℃
，10％RH～90％RH
Storage conditions
-20
℃
～60
℃
，10％RH～75％RH
Dimension(L*W*H) 144* 55* 38mm
Weight: 90g
Accessories: User's Manual, 9V battery and windshield

6. Meter Description
(1) Windshield / Microphone cover
(2) Microphone
(3) LCD display
(4) Power ON/OFF button
(5) MAX/MIN button
(6) Tripod nut
(7) Battery compartment
7. LCD Display Description
Icon Function
LCD 3 1/2 digits
MAX Max value recorded during session
MIN Min value recorded during session
dBA Frequency weighting（Human hearing range）
HOLD Data hold
Low battery indication
Note - This model does not measure dBC
8. Operating Instructions
Backlit & Power ON/OFF Function
Power ON：Press and release the power button" " and the LCD screen will be activated.
Power OFF: Press and hold the power button" " for approximately 3 secs until the LCD switches off.
Backlit：When the meter is on, press the power button " ", again and the backlight will be switch on.
Pressing the power button again will switch it off, but it will automatically turn off after approximately 30 secs
of inactivity.
HOLD & MAX/MIN Function
Hold Function:After turning the meter on, press and release the "" button. The "HOLD" icon will
appear on the screen and the last reading will be held on the screen. To release the held reading, press the
button again.
Max/Min: Press and hold the "" button for at least 3 secs until the "MAX" icon appears on the screen.
The meter will now display the highest reading recorded since it was last switched on. Pressing the button
again will display the minimum reading. To exit the MAX/MIN mode, press and hold the " " button for
3 secs.
9. Notes on use
•The meter will select the measurement range automatically. Measuring level range：30dB ～130dB.
•Hold the meter in your hand or use the tripod nut to fix the meter in a desired location.
•Measurements should be taken at head height where the people affected will be located.
•Noise levels decay over distance, so reference readings should include the distance from the sound
source (typically 1 metre).
•Wind blowing across the microphone may cause high readings. Use the supplied windshield to cover the
microphone when taking measurements to help avoid this.
•Remove the battery when the meter is to be stored for long periods of time to avoid battery leakage.
•Keep the microphone dry and avoid severe vibration.
10. Changing the battery
Open battery cover by removing the small securing screw.
Install a 9-volt battery in the battery compartment.
Close the battery compartment.
When the low battery icon " " appears, replace the battery.
Brannan Thermometers & Instrumentation
Cleator Moor
Cumbria, UK
CA25 5QE
www.brannan.co.uk BRAN.2015.Rev.0