Sper scientific 850014 Bedienungsanleitung

Mini Sound Meter

850014

Instruction Manual

TABLE OF CONTENTS

1. INTRODUCTION . . . . . . . . . . . 2

2. PANEL DESCRIPTION. . . . . . . . 3

3. OPERATING INSTRUCTIONS . . . . 4

3-A. Measuring Procedures . . . . . . 4

3-B. Hold Function . . . . . . . . . . 5

3-C. Min/Max Function . . . . . . . . 5

3-D. Calibration . . . . . . . . . . . . 6

4. AUTO POWER OFF . . . . . . . . . . 6

5. SPECIFICATIONS. . . . . . . . . . . 7

6. OPTIONAL ACCESSORIES. . . . . . 8

7. WARRANTY . . . . . . . . . . . . . . 8

1. INTRODUCTION

This lightweight and compact unit features

1/2" Electret condenser microphone, A and

C decibel frequency weighting scales, fast

or slow response time weightings, max/min,

hold and a backlight. Meets IEC 61672:2013

Class 2 frequency and time weighting

specications. Includes a windscreen,

instructions, and a 9V battery. CE rated.

1.Windscreen

2. Microphone

(remove

windscreen

to expose the

microphone tip)

3. LCD Display

4. A/C (weighting)

5. Hold

6. Fast/Slow

(response)

7. Backlight

8. Max/Min

9. Power

10. Battery

Compartment

(on back)

2. PANEL DESCRIPTION

3. OPERATING INSTRUCTIONS

Keep the microphone dry and avoid strong

vibrations. Use the WINDSCREEN (1) at wind

speeds over 10m/sec.

3-A. MEASURING PROCEDURE

• Turn the meter on by pressing the POWER (9)

button. The meter defaults to the A frequency

and FAST response.

• Press the A/C (4) button to toggle between

frequency scales. The A scale is shown as

“dBA” and the C scale is shown as “dBC”.

Select the A scale to simulate the human ear’s

response. A 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.

• Press the FAST/SLOW (6) button to toggle

between response-time scales. Select FAST

for general applications and SLOW to check the

avg. level of uctuating noise, like machinery.

• Point the MICROPHONE (2) at the sound

source. The decibel level is displayed.

• Press the BACKLIGHT (7) button to turn

on/o󰀨 the illuminated display. The backlight

auto-matically turns o󰀨 after 15 seconds.

• Press the POWER (9) button to turn the meter o󰀨.

3-B. HOLD FUNCTION

With the meter on, press the HOLD (5) button

to display “HOLD” and the last dB reading.

Press HOLD (5) again to exit this function.

3-C. MAX/MIN FUNCTION

The Max/Min dB readings are continually updated

as soon as you enter the Min/Max function.

These readings are reset when you exit the Max/

Min function, or when the meter is turned o󰀨.

• With the meter on, press the MAX/MIN (8)

button once to display “MIN” and the minimum

recorded dB level. The display will be updated

when there is a lower dB reading.

• Press the MAX/MIN (8) button again to display

“MAX” and the maximum (peak) recorded dB

level. The display will be updated only when the

max (peak) dB level is exceeded.

• To exit this function, press and hold the

MAX/MIN (8) button for at least 2 seconds, then

release. The current dB reading is displayed.

NOTE: When the meter is rst turned on, there

may be a dB “spike” that could inuence the

maximum (peak) reading. To ensure accuracy,

enter and exit the MAX/MIN function once to

reset the recorded dB levels.

3-D. CALIBRATION

Use Sper Scientic Acoustical Calibrator

850016 (or equivalent) to calibrate the meter.

Perform the calibration at temperatures

between 58-78°F (15-25°C). The calibrator

and meter should be at the same temperature.

• Remove the WINDSCREEN (1) and

turn on the meter by pressing the

POWER (9) button.

• Turn the acoustical calibrator on to 94.0 dB

and place it onto the MICROPHONE (2).

• With the meter in FAST response mode

and A (dBA) weighting, press and hold the

A/C (4) button.

• Without releasing the A/C (4) button,

press and hold the HOLD (5) button.

The display will go blank.

• Release both buttons and “94.0” ± 0.2

is displayed.

• The calibration process can be repeated

until the meter reads the desired value.

• This completes the calibration process.

4. AUTO POWER OFF

If no buttons are pushed for about 3 minutes,

the meter will automatically turn o󰀨.

5. BATTERY REPLACEMENT

• Turn o󰀨 the meter when the

low battery icon is displayed.

• Slide BATTERY COMPARTMENT (10)

cover down to install a fresh 9V battery.

• Replace the cover.

• Expected battery life is about 50 hrs.

6. SPECIFICATIONS

Display 3/4” high digits, 4-digit LCD,

display updates every 0.5 seconds.

Range dynamic range: 50dB

auto-ranging: 30-130d B

A (dBA) weighting: 30-130dB

C (dBC) weighting: 35-130dB

Resolution 0.1dB

Accuracy ±1.5dB

Frequency 31.5 HZ - 8KHZ

Response Fast = 125mS, Slow =1 sec

Operating

Environ.

41-104°F (5-40°C) <80% RH &

up to 2000m above sea level

Storage

Environ.

13-140°F (-10°C-60°C)

& < 70%RH

Weight &

Dimension

6 oz (170 g)

8" x 2⅛" x 1½”, 200 x 55 x 38 mm

7. OPTIONAL ACCESSORIES

850016 Acoustical Calibrator

840091 Windscreen

850000 Rubber Boot

8. 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 2/22/2018

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