Sper scientific 840005 User manual

Sound Meter
840005
Instruction
Manual

INTRODUCTION:
Use to measure sound levels in
the workplace, environmental
noise pollution, QC inspection of
products, background sounds,
tra󰀩c and more. Uses the “A”
decibel frequency weighting.
CE Approved.
OPERATING PROCEDURES:
• Sound Measurement: Set
the DIAL to either Lo or Hi
and read your results on the
matching scale.
• Battery Check: Set the dial to
BATT. If the reading is not in
the B. OK zone, replace the
battery with a new 9V battery.
• Internal Calibration: Set the
DIAL to CAL and use a small
screwdriver to turn the CAL
ADJ calibration screw until the
indicator points to CAL 70 dB.
TIPSONMEASURINGSOUND:
• From Objects: Place the meter
40" from the source.
• Tra󰀩c Sounds: Place the me-
ter 40~60" above ground level.
• Indoor Sounds: Place the me-
ter in the center of the room.
• Intermittent Sounds: Record
the highest value at each oc-
currence and compute the avg.
• Fluctuating Sound: Record
several measurements and
compute the average.

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PANELDESCRIPTION:
1. Sensor
2. Low Value Scale (40~80 db)
3. High Value Scale (80~120 db)
4. CAL 70 db
5. Battery Check
6. Dial
7. CAL ADJ (calibration screw is
located inside the battery compart-
ment, on the back of the meter)

Dimensions 6.25" x 2.5" x 1.5"
16 x 6.4 x 4 cm
Weight
(inc. battery)
7.1 oz (202 g)
Ranges low: 40 to 80 dB
high: 80 to 120 dB
Microphone Capacitance
Accuracy ±3 dB
Calibration Signal Oscillator
Power One 9V battery
SPECIFICATIONS:
WARRANTY:
Sper Scientic warrants this product
against defects in materials and
workmanship for ve (5) years from the
date of purchase, and agrees to repair or
replace any defective unit without charge.
If your model has since been discontinued,
an equivalent Sper Scientic product will
be substituted if available. This warranty
does not cover damage resulting from
accident, misuse, or abuse of the product.
To obtain warranty service, ship
the unit postage prepaid to:
SPER SCIENTIFIC LTD.
8281 East Evans Road, Suite #103
Scottsdale, AZ 85260
The defective unit must be accompanied
by a description of the problem and your
return address. Register your product
online at www.sperwarranty.com within 10
days of purchase.
Rev 6/30/2017