Amprobe SM-10 Manual de usuario

SM-10

SM-20-A

Sound Level Meters

Users Manual

For detailed specifications and ordering info go to www.TestEquipmentDepot.com

English

SM-10 / SM-20-A

Sound Level Meters

Users Manual

SM10_Rev002

Limited Warranty and Limitation of Liability

Your Amprobe product will be free from defects in material and workmanship for

1 year from the date of purchase. This warranty does not cover fuses, disposable

batteries or damage from accident, neglect, misuse, alteration, contamination,

or abnormal conditions of operation or handling. Resellers are not authorized

to extend any other warranty on Amprobe’s behalf. To obtain service during the

warranty period, return the product with proof of purchase to an authorized

Amprobe Test Tools Service Center or to an Amprobe dealer or distributor. See

Repair Section for details. THIS WARRANTY IS YOUR ONLY REMEDY. ALL OTHER

WARRANTIES - WHETHER EXPRESS, IMPLIED OR STAUTORY - INCLUDING IMPLIED

WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY,

ARE HEREBY DISCLAIMED. MANUFACTURER SHALL NOT BE LIABLE FOR ANY

SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES,

ARISING FROM ANY CAUSE OR THEORY. Since some states or countries do not

allow the exclusion or limitation of an implied warranty or of incidental or

consequential damages, this limitation of liability may not apply to you.

Repair

All test tools returned for warranty or non-warranty repair or for calibration

should be accompanied by the following: your name, company’s name, address,

telephone number, and proof of purchase. Additionally, please include a brief

description of the problem or the service requested and include the test leads

with the meter. Non-warranty repair or replacement charges should be remitted

in the form of a check, a money order, credit card with expiration date, or a

purchase order made payable to Amprobe® Test Tools.

In-Warranty Repairs and Replacement – All Countries

Please read the warranty statement and check your battery before requesting

repair. During the warranty period any defective test tool can be returned to your

Amprobe® Test Tools distributor for an exchange for the same or like product.

Non-Warranty Repairs and Replacement – US and Canada

Non-warranty repairs in the United States and Canada should be sent to a

Amprobe® Test Tools Service Center. Call Amprobe® Test Tools or inquire at your

point of purchase for current repair and replacement rates.

➊Windscreen

➋Microphone

➌

LCD display

➍Frequency weighting select button

➎Maximum/Minimum Hold button

➏Power button

➐Backlight button

➑Time weighting select button

➒Data Hold button

➓Record button

REC

HOLD

MAX

FAST

SLOW

A / C

Fast Slow

HOLD MAX dBA

MIN dBCN

HOLD

MAX

FAST

SLOW

A / C

Fast Slow

HOLD MAX dBA

MIN dBCN

SM-10 SM-20-A

SM-10 / SM-20-A

Sound Level Meters

CONTENTS

Symbols................................................................................................................. 5

Unpacking and Inspection................................................................................... 5

Introduction..........................................................................................................5

Operation .............................................................................................................5

MAX/MIN......................................................................................................... 6

HOLD ...............................................................................................................6

Backlight..........................................................................................................6

Record (SM-20-A Only) ................................................................................... 6

Calibration Procedures ..................................................................................6

Speciﬁcations........................................................................................................ 7

Maintenance and Repair .................................................................................... 8

Battery Replacement .....................................................................................8

SYMBOLS

Refer to the manual Do not dispose of this

product as unsorted

municipal waste.

Conforms to relevant

Australian standards. Complies with EU

directives

Warning and Precautions

For wind speeds over 10 m/sec (22.3 mph), use the windscreen on the•

microphone.

For general sound level measurements use A weighting. For checking the•

low-frequency content of noise use C weighting. If the C-Weighted level

is much higher than the A-weighted level, then there is a large amount of

low-frequency noise

For normal measurements use the FAST mode. For checking average level•

of ﬂuctuation noise use the SLOW mode.

UNPACKING AND INSPECTION

Your shipping carton should include:

1 SM-10 / 20-A sound level meter

1 9 volt battery

1 Download Suite CD-ROM (SM-20-A)

1 USB Cable (SM-20-A)

1 Users Manual

If any of the items are damaged or missing, return the complete package to

the place of purchase for an exchange.

INTRODUCTION

This Sound Level Meter has been designed to meet the measurement

requirements of safety Engineers, Health, Industrial safety ofﬁces and quality

control in various environments. This unit conforms to the IEC651 Type 2,

ANSI S1.4 Type 2, JISC1502 requirements for Sound Level Meters.

OPERATION

Press1. button for power ON.

Select the desired response time and weighting. If the sound source2.

consists of short bursts or only catching sound peak, set response to FAST.

To measure average sound level, use the slow setting. Select A weighting

for general noise sound level and C weighting for measuring sound level

of acoustic material.

Hold the instrument comfortably in hand or ﬁx on tripod and point the3.

microphone at the suspected noise source, the sound pressure level will

be displayed.

MAX/MIN

The MAX MIN feature reads and updates the display to show the maximum

or minimum average value measured after you press the MAX MIN button.

Pressing the MAX MIN button for less than 1 second will put the meter into

a mode of displaying the maximum, minimum, average, or actual readings.

Each time the button is pressed, the meter will alternate between MAX

and MIN. Press the MAX MIN button for more than 2 seconds to disable this

feature.

HOLD

Freezes the reading present on the LCD at the moment the button is pressed.

To use this button feature set up the meter for the type of measurement and

range desired before pressing the button.

Backlight

Press the button you enable the display backlight to easy readings in dark

environments. Press more than 1 second to disable backlight, which however

it automatically OFF after 15 seconds.

Record (SM-20-A Only)

Refer to CD-ROM for Download SuiteTM instructions .

To transfer the data from the instrument to the PC the following procedure

must be followed:

Switch ON the instrument1.

Connect the serial output of the instrument to the serial output of the PC2.

through the serial cable

Press the REC button on the SM-20-A.3.

Install the software and start it – Close the introduction window4.

Press F2 and follow the commands.5.

Refer to software help ﬁle for further instructions.6.

Calibration Procedures

Using a standard Acoustic Calibrator (SM-CAL1) (94dB, 1 kHz Sine wave)

Set meter for dBA and FAST.1.

Insert the Microphone nozzle carefully into the insertion hole of the2.

calibrator.

Press A/C button then press the HOLD button, hold the 2 buttons at3.

the same time more than 1 second. LCD will be blinking to conﬁrm

calibration.

When LCD blinked, release the A/C and the HOLD buttons. The sound level4.

meter will display 94.0 dBA . The calibration is done.

The 94 dB calibration process can be repeated until the meter reads 94.05.

dB. Recalibration cycle: 1 year.

SPECIFICATIONS

General

Display: 4 digits LCD

Microphone: 1/2 inch Electret condenser microphone.

Low Battery Indication: Replace battery when LCD displays “”.

Power Supply: 9V NEDA 1604, IEC 6F22, JIS 006P battery.

Power Life : Approx. 50 hrs (alkaline Battery).

Auto Power Off: Approx. 5 min

Environment: Indoor operation, < 2000 m

Temperature / Humidity

Operation: 5 °C to 40 °C (41°F to 104°F); < 80% RH

Storage: -10 °C to 60 °C (14°F to 140°F); < 70 %RH

Dimension: 200 x 55 x 38 mm (7.8 x 2.2 x 1.5 in)

Weight: 233g. (0.5 lb.) Including battery

-EMC: EN61326-1 This product complies with requirements of the

following European Community Directives: 89/336/EEC (Electromagnetic

Compatibility) and 73/23/EEC (Low Voltage) as amended by 93/68/EEC (CE

Marking). However, electrical noise or intense electromagnetic ﬁelds in the

vicinity of the equipment may disturb the measurement circuit. Measuring

instruments will also respond to unwanted signals that may be present within

the measurement circuit. Users should exercise care and take appropriate

precautions to avoid misleading results when making measurements in the

presence of electronic interference.

Electrical (Audio)

Standard applied: IEC 651 Type2, ANSI 1.4 Type 2.

Dynamic range: 50 dB.

Resolution: 0.1 dB, Display Update: 0.5 sec.

Time weighting: FAST(125mS), SLOW(1 sec).

Frequency range: 31.5 Hz to 8 kHz.

Measuring level range: (Auto Range)

A Weighting: 30 to 130 dB.

C Weighting: 35 to 130 dB.

Accuracy: ± 1.5 dB.

Calibration cycle: 1 year.

MAINTENANCE AND REPAIR

If there appears to be a malfunction during the operation of the meter, the

following steps should be performed in order to isolate the cause of the

problem.

Check the battery. Replace the battery immediately when the symbol1.

“” appears on the LCD.

Review the operating instructions for possible mistakes in operating2.

procedure.

Except for the replacement of the battery, repair of the meter should be

performed only by a Factory Authorized Service Center or by other qualiﬁed

instrument service personnel. The front panel and case can be cleaned with

a mild solution of detergent and water. Apply sparingly with a soft cloth and

allow to dry completely before using. Do not use aromatic hydrocarbons or

chlorinated solvents for cleaning.

Battery Replacement

Turn off the meter and slide out the battery cover. Replace the battery1.

with a NEDA type 1604 or equivalent 9V alkaline battery. Replace the

cover.

Remove battery when the SM-10/SM-20-A is not used for extended period.2.

Battery Replacement

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