Sper scientific 850019 User manual

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Bluetooth®
Sound Meter
850019
Instruction Manual

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TABLE OF CONTENTS
INTRODUCTION..........................................3
PANEL DESCRIPTION................................4
MEASUREMENT PROCEDURES...............5
AC WEIGHTING SCALES...........................5
BACKLIGHT.................................................6
HOLD FUNCTION........................................6
MAX/MIN FUNCTION...................................6
AUTO POWER OFF.....................................7
BLUETOOTH COMMUNICATIONS.............8
BATTERY REPLACEMENT.......................11
SPECIFICATIONS......................................12
OPTIONAL ACCESSORIES......................13
WARRANTY...............................................16

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INTRODUCTION
Sper Scientic’s Bluetooth® Sound Meter is
small, light, and simple to use with results
clearly displayed on the meter’s large
1-½” backlit display. Choose A or C decibel
frequency weighting scales and manual or
auto ranging. Indicates readings over or
under range and features a bar graph dis-
play, minimum and maximum hold (peak)
and data hold functions. The meter o󰀨ers the
convenience of Bluetooth® for wireless com-
munication with free iOS and Android Apps.
Results can also be remotely viewed on your
smartphone in real time, saved and exported.
Comes ready to use with a windscreen, tripod
screw, instructions and a 9V battery.

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PANEL DESCRIPTION
1. Microphone
2. LCD Display
3. HOLD/ button
4. MAX/MIN button
5. Power button
6. Range / A/C button
7. Bluetooth button
1.
2.
3.
4.
5.
7.
6.

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MEASUREMENT PROCEDURES
Keep the microphone dry and avoid strong
vibrations. Use the WINDSCREEN at wind
speeds over 10m/sec.
1. Turn the meter on by pressing the POWER button.
2. Point the microphone at the sound source.
The decibel level is displayed.
3. If ”UNDER” or “OVER” (range) appear on
the display press the RANGE button
repeatedly until they disappear.
4. Press the POWER button to turn the meter o󰀨.
A/C WEIGHTING SCALES
Press the A/C button for 2 seconds to switch
between A & C frequency weighting scales.
The A scale is displayed as “dBA” and the C
scale is shown as “dBC” Select the A scale to
simulate the human ear’s response.
See Note on next page......

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Note…A scale is generally used for
environmental measurements. The C scale
approximates a at response and is typically
used to measure low-frequency machinery
noise where the target sound level is already
known.
BACKLIGHT
Press for 2 seconds to turn the illuminated
display on/o󰀨.
HOLD FUNCTION
With the meter on, press the HOLD button
to display “HOLD” and the last dB reading.
Press HOLD again to exit this function.
MAX/MIN FUNCTION
Max/Min dB readings are continually updat-
ed as soon as you enter the Max/Min mode.
These readings are reset when you exit the
Max/ Min mode, or when the meter is turned o󰀨.

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1. Press the MAX/MIN button once to display
“MAX” and the maximum (peak) recorded
dB level. The display will be updated only
when the max (peak) dB level is exceeded.
2. Press the MAX/MIN button again to display
“MIN” and the minimum recorded dB level.
The display will be updated only on reach-
ing a lower dB reading..
3. Press the MAX/MIN button again to exit
Max/Min mode. The current reading is now
displayed and continually updated.
AUTO POWER OFF
1. If no buttons are pushed for about 10 min-
utes, the meter will automatically turn o󰀨.
2. While the meter is on, press the power
button for 2 seconds to override Auto Power
O󰀨: disappears from the display indicat-
ing that Auto Power O󰀨 is disabled.
See Note on next page......

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Note…The meter defaults to Auto Power O󰀨
each time it is turned on.
BLUETOOTH®COMMUNICATION
Download and pairing
1. Download the iOS or Android “Meterbox
Pro” APP to your smartphone.
2. Press the button on the meter to activate
Bluetooth®.
3. Press “Connect Device” on the APP.
4. Now choose “850019” from the device list
that now appears. The meter will immedi-
ately begin displaying a real time graph of
your meter’s readings.
Saving your results
5. To begin recording data press the red
button on screen. You will now be asked to
name your le and save the name. The
data will now start recording. Press the red
button again to stop recording.

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Viewing saved Data
6. Press < at the top of the screen to view
saved data. Next, choose “Files” at the
bottom of the screen, then choose the le
you wish to view. A graph of the entire
record will now appear. Press on the
lower right to see the data including
recording times, maximum, minimum and
average readings.

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Settings
7. (saved data le graph) enables you to
add notes and photos to your data le.
8. Press at the top of the screen to export
the data for to your computer for further
analysis or storage.
9. Alarms. Insert your Hi and Low values and
turn the alarm switch on.
Note… The meter defaults to Bluetooth o󰀨
each time it is turned on.