Sper scientific 850015 Manuel utilisateur

PB 1

Graphic Display

Sound Meter

850015

Instruction Manual

Graphic Display Sound Meter 850015

Sper Scientic

Printed in the USA

The contents of this manual may not be

reproduced or transmitted in any form or by any

means electronic, mechanical, or other means

that do not yet exist or may be developed,

including photocopying, recording, or any

information storage and retrieval system without

the express permission from Sper Scientic.

2 3

TABLE OF CONTENTS

1. INTRODUCTION . . . . . . . . . . . . . . .4

2. FEATURES . . . . . . . . . . . . . . . . . .5

3. MATERIALS SUPPLIED . . . . . . . . . . .5

4. FRONT PANEL DESCRIPTION

& LCD DISPLAY . . . . . . . . . . . . . . .6

5. CALIBRATION . . . . . . . . . . . . . . . .8

6. MEASUREMENT PROCEDURES. . . . . .9

7. MAINTENANCE & STORAGE . . . . . . . 12

8. BATTERY REPLACEMENT . . . . . . . . 13

9. SPECIFICATIONS . . . . . . . . . . . . . 14

10. WARRANTY . . . . . . . . . . . . . . . . 16

INTRODUCTION

This Sper Scientic Graphic Display Sound Level

Meter (Model 850015) provides fast and accurate

measurement in a wide range of environments.

Applications include safety engineering, health

environments, industrial settings, and o󰀩ce

engineering.

The meter features both a numerical digital display

and 30-segment bar graph for accuracy. AC

and DC signal outputs are available through the

standard 3.5 mm coaxial socket, allowing use of a

frequency analyzer, level recorder, FFT analyzer,

graphic recorder, and more.

Meets IEC 61672:2013 Class 2 frequency and

time weighting specications.

4 5

FEATURES

• Analog and digital displays

• Minimum and maximum readings

• Peak hold

• Frequency weighting

• Level range control

• Visual alarm functions

• AC and DC output coaxial socket

• Windscreen

• Tripod mounting screw

• Low battery indicator

• Automatic shuto󰀨

MATERIALS SUPPLIED

• Meter

• One 9V Alkaline Battery

• Instruction Manual

• Windscreen for Microphone

• Hard Carrying Case

FRONT PANEL DESCRIPTION & LCD DISPLAY

6 7

1. Microphone & Windscreen

2. AC/DC Output Socket

3. Battery Cover (on back, not pictured)

4. Auto Power O󰀨 indicator

5. FAST/SLOW response indicator

6. MIN/MAX Value hold indicator

7. UNDER/OVER range indicator

8. Range indicator

9. Calibration Mode indicator

10. Reading indicator

11. Battery capacity indicator

12. A/C Weighting indicator

13. Power Button

14. Frequency weighting button

15. Min/Max button

16. Time weighting button

17. Increase level range button

18. Decrease level range button

FRONT PANEL DESCRIPTION & LCD DISPLAY

CALIBRATION

The meter will arrive properly calibrated and

ready for use, and should keep it’s calibration for

a signicant period of time. The meter should be

recalibrated if:

• If the meter has not been used for a long time.

•

If the meter has been operated in an

extreme environment.

Note...

You will need a standard acoustic calibrator

(94 dB, 1KHz Sine Wave) to recalibrate the

meter.

1. With the meter turned o󰀨, press and hold

down MIN/MAX.

2. While continuing to hold MIN/MAX, press

POWER to turn the meter on. “CAL 94dB”

will ash.

3. Insert the microphone carefully into

the calibrator.

4. Press ▲ or ▼ to adjust the reading until the

display shows 94 dB.

5. When the displayed reading correctly reects

the calibration point, press MIN/MAX to nish.

6. To exit the calibration process at any point,

press POWER to cancel the procedure. The

meter will return to Normal Mode.

8 9

MEASUREMENT PROCEDURES

The meter may be held in the hand during

measurement or mounted using the tripod

mounting screw.

Note…

Wind blowing across the microphone may a󰀨ect

the readings. Mount the windscreen on the

microphone whenever the meter is used in a

windy environment.

1. Press POWER to turn the meter on.

2. Press FAST/SLOW to select the

response time.

a. Select FAST to measure short bursts

of sound.

b. Select SLOW to measure average

sound levels.

3. Press A/C to select the weighting.

a. Select A weighting for general sound level

measurements. “dBA” will display.

b. Select C weighting for measuring the

sound level of acoustic material and

checking the low-frequency content of

sound. “dBC” will display.

Note…

If the C-weighted sound level is much higher

than the A-weighted level, a large amount of low-

frequency sound is present.

4. Press ▲ or ▼ to adjust the level range

as needed.

a. Press ▲to increase the level range from

low to medium to high.

b. Press ▼to decrease the level range from

high to medium to low.

Note…

During measurement, visual alarms will alert you

if the input is out of range. “OVER” indicates that

the sound input is above the upper limit of the

range. “UNDER” indicates that the sound input

is below the lower limit of the range.

5. Point the microphone in the direction of the

sound to be measured. The reading will

display.

6. Press and hold POWER for 2 seconds to turn

the meter o󰀨 when measurement is complete.

Peak Hold

Note…

Please select the appropriate sound level range

before entering the Peak Hold and Max/Min

recording modes.

1. Press MIN/MAX to display “MAX” along with

the maximum reading. When the maximum

sound level is exceeded the new maximum

reading will be displayed.

2. Press MIN/MAX again to display “MIN” along

with the minimum reading. The display will be

updated when a lower sound level is reached.

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