Extech Instruments 407764 Manuale utente

User's

Manual

EXTECH

:iMSTRUMEMTS

Datalogging

Sound

Level

Meter

Model

407764

Range;

30dB

130dB

4-digit

LCD

Display

with

0.1

resolution

and

Frequency

Weighting

RS-232

Interface

with

16,000

point

datalogger

and

Date

Time

Stamp

Auto-Ranging

SLOW

A/C

MAS

Introduction

Congratulations

your

purchase

Extech's

Datalogging

Sound

Level

Meter.

The

meter

capable

performing

all

your

noise

measurements

needs

addition

it's

capabilities

for

data

acquisition

(direct

data

storage

PC)

datalogging

(data

storage

Internal

memory

for

later

download).

Data

storage

enables

the

user

save

data,

analyze

data

and

generate

reports.

This

professional

meter,

with

proper

care,

will

provide

years

safe

reliable

service.

Specifications

Applicable

Standards

Accuracy

Frequency

range

Measuring

level

Frequency

weighting

Microphone

Display

Bargraph

Sampling

rate

Memory

size

Datalogging

sample

rate

Time

weighting

MAX

Level

ranges

Auto

range

Linearity

range

Alarm

function

output

Power

supply

Battery

life

adapter

Operating

temperature

Operating

humidity

Storage

temperature

Storage

humidity

Memory

size

RS-232

Interface

Dimensions

Weight

Accessories

IEC651

Type

ANSI

81.4

Type

±1.5dB

(under

reference

conditions)

31.5Hz-8KHz

30-

130dB

and

0.5"

Electret

condenser

microphone

4-digit

LCD

Resolution:

0.1

Display

period:

0.5

sec.

50dB

scale

(1dB

steps).

Display

period:

50mS;

Auto-ranging:

10OdB

scale,

2dB

steps

50mS

16,000

records

255

sets

(non-volatile

memory)

86,400

seconds

per

record

FAST:

125mS,

SLOW:

sec.

Maximum

reading

held

30-80dB,

40-90dB,

50-1

OOdB,

60-110

dB,

70-120dB,

80-130dB

(Total

ranges)

30to130dB

50dB

OVER

indicator

for

readings

higher

than

high

limit.

UNDER

indicator

for

readings

lower

than

low

limit.

0.707

Vrms

Full

Scale

Output

impedance

approx.

6000

lOmV/dB

Output

impedance

approx.

1000

Four

1.5V

'AA'

batteries

Approx.

hrs

continuous

operation

Voltage:

6VDC

Voltage

Ripple:

lOOmVpp

Supply

Current:

lOOmADC

Socket:

Ground

Casing:

Positive

External

Diameter:

3.5mm

104°F

40°C)

10to80%RH

140°F

(-10

60°C)

10to80%RH

16,000

data

records

with

Date

and

Time

Stamping

Baud

rate:

9600bps

10.4

1.4"

(265

35mm

Approx.

11.5

oz.

(358g)

including

battery

Batteries,

carrying

case,

screwdriver,

windscreen,

3.5mm

plug,

RS-232

cable

2^n

gender

changer,

Windows™

ccnrpatible

software.

Safety

symbols

Meter

protected

throughout

double

insulation

reinforced

insulation.

Complies

with

EMC

Model

407764

Version

1.3

October

2001

Meter

Description

Microphone

Display

Power

switch

Level

range

control

switch

MAX

hold

switch

Frequency

weighting

switch

Response

time

select

switch

output

terminal

output

terminal

10.

CAL

(calibration)

pot.

11.

Extemal

power

12.

RS-232

interface

connector

13.

Battery

cover

14.

Tripod

mounting

screw

15.

Wind-screen

(Figure

sue

to-im

RS-232

V-

-J

Display

Description

Range

selection

Date

information

SPL;

Instantaneous

sound

pressure

level

Low-Battery

MAX:

Maximum

SPL

value

held

Data

recording

Measurement

value

Memory

full

Units

10.

Frequency

weighting

(A/C)

11.

TIME

function

12.

50dB

level

(Bargraph)

13.

Over

range

14.

SLOW

time

response

15.

FAST

time

response

16.

Under

range

-8S

i§

(Figure

>001

Model

407764

Version

1.3

October

2001

Measurement

Preparation

•

Read

the

following

safety

information

before

attempting

operate

the

meter

•

Use

the

meter

only

specified

the

meter's

built-in

protection

may

impaired.

Maintenance

Cleaning

•

Service

not

covered

this

manual

should

performed

qualified

personnel

•

Periodically

wipe

the

case

with

dry

cloth.

not

use

abrasives

solvents.

Battery

Replacement

When

the

battery

voltage

drops

critical

level,

the

£3

symbol

appears

the

LCD.

Replace

batteries

soon

possible

after

the

battery

symbol

appears.

The

batteries

AA)

are

located

the

rear

battery

compartment.

Remove

the

single

Philips

head

screw

(center

rear)

for

access

the

batteries.

Measurements

Default

Configuration

The

meter's

default

configuration

follows:

90dB,

'A'

Frequency

Weighting,

and

'FAST'

Response

Time

The

LCD

will

reflect

the

meter's

configuration.

Measurement

Considerations

Use

windscreen

cover

the

miaophone

windy

conditions.

Calibrate

the

meter

often,

especially

the

meter

has

not

been

used

for

long

time.

not

store/operate

the

meter

high

temperature/humidity

for

long

periods

time.

Keep

the

meter

and

the

microphone

dry.

Avoid

severe

vibration

when

using

the

meter.

Remove

the

battery

when

the

meter

will

stored

for

long

periods

time.

Frequency

Weighting

Change

the

Frequency

Weighting

pressing

the

'A/C

button.

The

'A'

icon

will

display

the

right-hand

area

the

LCD.

Note:

With

'A'

weighting

selected,

the

meter

responds

the

human

ear

(boosting

and

cutting

the

noise

amplitude

over

the

frequency

spectrum

see

Appendix).

'A'

weighting

used

for

environmental

measurements,

OSHA

regulatory

testing,

law

enforcement,

and

workplace

design.

Select

weighting

for

flat

response

measurements

(no

boost

cut).

weighting

suitable

for

the

sound

level

analysis

machines,

engines,

etc.

Most

OSHA

testing

performed

using

'A'

Weighting

and

SLOW

Response

Time

settings.

Response

Time

Change

the

Response

Time

pressing

the

'FAST/SLOW'

button.

The

'FAST

'SLOW'

icon

will

display

the

upper

area

the

LCD.

Note:

Select

FAST

capture

noise

peaks

and

noises

that

occur

ve|y

quickly.

FAST

mode,

the

meter

responds

200ms.

Select

the

SLOW

Mode

(meter

responds

500ms)

monitor

sound

source

that

has

reasonably

consistent

noise

level

average

quickly

changing

levels.

Selection

Fast

Slow

determined

the

application

and

any

directives

standards

that

application.

Auto/Manual

Range

Press

the

LEVEL

button

arrdW

scroll

through

the

following

ranges:

30-80dB,

40-90,

50-100dB,

60-110,

70-120,

80-130

and

30-130dB

(auto).

The

display

will

reflect

the

range

for

each

button

press.

Notes:

Use

Auto

Range

when

the

noise

source

relatively

steady.

Use

one

the

Manual

ranges

may

required

the

levels

are

changing

over

wide

range.

Model

407764

Version

1.3

October

2001

\A)

ter

;ay

Operation

Power

the

meter

and

select

the

desired

Response

Time

(Fast

Slow)

and

Frequency

Weighting

C).

Select

the

desired

range.

Hold

the

Instrument

comfortably

hand

position

tripod.

Point

the

microphone

toward

the

noise

source,

the

sound

pressure

level

will

displayed

the

meter's

LCD

display.

When

MAX

(maximum

hold)

mode

selected

pressing

the

MAX

key,

the

instrument

captures

and

holds

the

maximum

noise

level

reading

the

display.

Press

the

MAX

key

again

clear

the

MAX

reading.

Calibration

Note

that

Sound

Level

Calibrator

required.

Set

the

meter

listed

Step

below.

calibrate

the

meter;

Display:

SPL

(dBA)

Response

Time:

FAST

Disable

the

MAX

function

Range:

120dB.

Insert

the

microphone

carefully

into

the

sound

level

calibrator.

Power

the

calibrator

and

adjust

the

Sound

Level

Meter's

CAL

potentiometer

(as

shown

figure

right)

match

the

Calibrator's

output.

Typically,

Sound

Level

Calibrator

will

supply

94dB

114dB

1KHz.

Adjust

the

Sound

Level

Meter's

CAL

potentiometer

for

94dB

114dB

LCD

display

(Figure-3)

de,

tor

30.

ige

jal

Analog

output

The

407764

has

two

analog

output

jacks

located

its

right

side;

one

for

and

one

for

DC.

For

DC,

the

meter

transmits

10mv

dB.

For

the

full

scale

value

0.707V.

The

output

impedance

600a

for

and

100f2

for

DC.

The

supplied

3.5mm

stereo

mini-plug

can

used

assemble

cable

connect

either

the

meter's

analog

output

jacks.

When

using

stereo

plug,

the

one

supplied,

short

the

Tip

and

the

Ring

(see

diagram

below).

Ground

(negative)

connects

the

Sleeve

while

the

positive

signal

taken

from

the

Tip/Ring.

For

mono

plugs,

ground

connects

the

Sleeve

while

the

positive

signal

taken

from

the

Tip.

The

meter

output

can

then

transmitted

chart

recorder,

datalogger,

other

data

storage

device.

(Figure

Sleeve

Tip

Sleeve

Tip

ono

Stereo

Ring

K)1

Model

407764

Version

1.3

October

2001

DataLogging

The

internal

memory

the

meter

can

store

16,000

reading

255

recording

sessions

(called

sets).

Prior

beginning

data

storage,

the

meter's

real

time

clock

and

the

datalogger's

sample

rate

must

set

using

the

supplied

software.

The

clock

set

the

Control

Panel

window

and

the

sample

rate

set

the

Logger

window.

Set

the

real

time

clock

(if

required).

Set

the

sample

rate

(if

required).

record

data,

press

hold

the

RECORD

key

for

seconds

until

the

"RECORD"

symbol

flashes

once

per

second

the

LCD.

Press

the

Record

key

again

stop

recording

data.

the

recording

memory

full,

the

"FULL"

symbol

will

appear

the

LCD.

clear

the

recording

memory

press

and

hold

the

RESET

key

and

power

the

meter.

The

LCD

will

show

the

"dEL"

icon

letting

the

user

know

that

the

datalog

memory

has

been

cleared.

Download

Record

data

via

refer

the

Interface

section

below.

(figure

Interface

Connecting

the

Meter

Refer

Figure

Connect

the

9-pin

male

connector

the

Sound

Level

Meter,

and

connect

the

9-pin

female

connector

the

9-pin

C0M1

port.

C0M1

used

the

mouse,

connect

the

25-pin

female

connector

the

25-pin

COM2

port

(you'll

need

use

the

included

25-pin

adapter).

Requirements

486

IBM

compatible

better

One

3.5"

high

density

disk

drive

Available

serial

port.

Bytes

H.D.

storage

space

EGA

VGA

monitor

Windows

95,

98,2000

Operating

System

3-button

2-button

Microsoft

compatible

mouse.

least

486

recommended

for

displaying

all

software

windows

with

fast

sampling

rate

(such

second).

386/25

used,

you

can

only

open

one

window

(LIST,

GRAPH,

ANALOG)

time

when

using

fast

sampling

rates.

(olololo^

Installing

the

Windows

Application

Program

the

instructions

the

disk

for

installation.

Model

407764

Version

1.3

October

2001

Software

Control

Panel

Description

The

Control

Panel

(Figure

HANLL_Ver.

2.3

sovubleveluetek

ANALOG

106.4

<-RESET->

13:19:58

Sec

SAVEAS

IQ^nii:

SAHPLDC

EXIT

GTARTRECORDINC

METER

SIMULATION

The

left

side

the

Control

Panel

window

provides

replica

the

meter's

front

panel

and

display.

MAX:

Hold

and

update

maximum

value

A/C A/C

weighting

selection

reset

Reboot

and

dear

the

data

memory

F/S

Fast/Slow

selection

REG

Enable

datalogging

LEVEL

Set

range

DATA

ACQUISITION

CONTROLS

and

DISPLAYS

MIN:

MAX:

TIME:

SAMPLING

TIME

SAMPLING:

<-RESET->:

SYSTEM

TIME

SET:

SAVE

AS:

OPEN

FILE:

FILE

NAME:

START

RECORDING:

STOP

RECORDING:

EXIT

Displays

the

minimum

value

recorded

Displays

the

maximum

value

recorded

Displays

the

Real

Time

CloGk=€etting

Display

data

acquisition

sampling

rate

(Fig

Opens

data

acquisition

sampling

rate

selection

box.

(Datalogging

sample

rate

set

the

MEMORY

"Logger"

window)

Resets

thee

MIN

and

MAX

stored

readings

Sets

the

meter's

dock

the

value

the

clock

Opens

the

data

file

storage

window

(*.dat)

Opens

the

data

file

retrieve

window

(*.dat)

(Fig.8)

Displays

name

and

location

data

acquisition

file

After

opening

file,

click

start

recording.

Stop

recording

and

the

file

program

(Figure-7)

Selecting

the

datalog

sample

rate

Input

Sanipiing

Time

Enter

the

SAMPLING

TIME

seconds

K-

G5)

Cencel

(Figure-8)

Opening

datalog

file

(*.dat)

Fie

Dame:

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lOetaFlesr.dall

Eolders:

c:V..NeMtechW)undm'^

Bc:\

PROGRA-1

EXTECH

SOUNDM-1

Caned

Ne^Ifork...

Bead

only

Diiyet:

Model

407764

Version

1.3

October

2001

DISPLAY

SELECTIONS

(Figure-9)

GRAPH

PRWT

unn

GOT

too

SMwbw

Total

Aoeoidr

^IME

(Figure-10)

LIST

SAVE

OlAPH

DOT

Date

iTi-

lvalue

iTjpe

|Ba(

iRange

0/U

09-10-2001

14:01:59

66.3

50-100

09-10-2001

14:02:60

63.9

50-im

09-10-2001

14:02:01

64.7

50-100

09-10-2001

14:02:02

64.7

50-100

09-10-2001

14:02:03

64.7

50-100

09-10-2001

14:02:04

64.6

50-100

09-10-2001

14:02:05

85.2

50-100

OVER

09-10-2001

14:02:06

64.4

50-100

09-10-2001

14:02:07

85.6

50-100

09-10-2001

14:02:08

64.9

50-100

09-10-2001

14:02:09

63.8

50-100

09-10-2001

14:02:10

62.7

50-100

09-10-2001

14:02:11

63.5

50-100

OVER

09-10-2001

14:02:12

84.2

50-100

OVER

09-10-2001

14:02:13

66.2

50-100

OVER

(Figure

11)

ANALOG

TIME

METER

CODE

SAMPLING

14:18:37

SET

DATE

TIME

Logger

Window

(memory

setup/

data

download)

The

Logger

window

sets

the

sample

rate

the

meter's

internal

memory

and

provides

the

cxjntrols

download

display

and

save

stored

data.

MEMORY:

Displays

memory

size

REMAINING

Displays

amount

unused

memory

When

clicked,

downloads

and

displays

the

meter's

date

and

time

Numeric

Identification

code.

Enter

the

code

the

box

and

click

the

bar

store

the

code.

Datalogger

sample

rate.

Enter

the

sample

rate

the

box

(in

seconds)

and

click

the

SAMPLING

bar

tastorb

the

value.

Click

the

bar

download

the

stored

data

TIME

RECORDING

Click

the

bar

display

sets

downloaded.

Click

set

select

data

for

display

NUMBERS

REC

Displays

the

number

records

(data

points)

the

selected

set.

SHOW

DATA

Display,

Save

Graph

data

from

selected

set

SAMPLING

NUMBERS

REC

SHOW

DATA

0HJ9-10—H;15:51

OmS-l

0—14:17:32

NUMBER

SETS

Model

407764

Version

1.3

October

2001

DATA

DOWNLOAD

PROCEDURE

Click

the

MEMORY

icon

the

Control

Panel

screen.

Click

the

NUMBERS

SETS

button,

the

number

sets

will

appear.

Click

the

TIME

RECORDING

button

view

each

recorded

set.

Click

SET

the

TIME

RECORDING

box.

The

number

records

the

set

will

appear

and

the

data

will

downloaded

from

meter

PC.

Save

disk

desired.

Click

the

SHOW

DATA

button

for

details

each

record.

Figure

shows

the

data

list.

Select

SAVE,

PRINT,

GRAPH,

EXIT

from

the

choices.

Note:

the

example

for

Figure

12,

there

are

sets

recorded

data

memory.

Set

No.

has

records.

Note:

you

need

change

the

CODE

the

SAMPLING

time,

click

the

desired

parameter,

type

the

changes

and

click

the

bar.

(Figure-13)

List

datalogged

set

(Figure-14)

Graph

datalogged

set

SAVE

nUHT

ORAPH

EST

\amti

HEC

233

234

235

240

241

243

244

245

DATE

TIME

99-04-09

99-04-03

99^)4-09

99-04-09

994M-09

99-04-09

08:15:55

08:15:56

08:15:57

08:15:58

06:15:59

08:16:00

08:16:01

08:16:02

08:16:03

08:16:04

08:16:05

08:16:06

08:16:07

l»9.2

69.3

68.2

6Z2

69.9

61.7

60.9

61.5

62.2

70.4

66.3

68.1

64.4

40-90

08:12:03

08:14:05

88:16:t

TIME

(Figure-15)

Selecting

range

datalogged

records

KANCi:

PROM

MEN

MAX

24G

•St.

.001

Model

407764

Version

1.3

October

2001

Calibration

Repair

Services

Extech

offers

complete

repair

and

calibration

services

for

all

the

products

sell.

Fop

periodic

calibration,

NIST

certification

repair

any

Extech

product,

call

customer

service

for

details

services

available.

Extech

recommends

that

calibration

performed

annual

basis

insure

calibration

integrity.

Warranty

EXTECH

INSTRUMENTS

CORPORATION

warrants

this

instrument

free

defects

parts

and

workmanship

for

one

year

from

date

shipment

six

month

limited

warranty

applies

sensors

and

cables).

should

become

necessary

retum

the

instrument

for

service

during

beyond

the

warranty

period,

contact

the

Customer

Service

Department

(781)

890-7440

ext.

210

for

authorization

visit

our

website

www.extech.com

(click

Contact

Extech

and

Service

Department

request

number).

Return

Authorization

(RA)

number

must

issued

before

any

product

retumed

Extech.

The

sender

responsible

for

shipping

charges,

freight,

insurance

and

proper

packaging

prevent

damage

transit.

This

warranty

does

not

apply

defects

resulting

from

action

the

user

such

misuse,

improper

wiring,

operation

outside

specification,

improper

maintenance

repair,

unauthorized

modification.

Extech

specifically

disclaims

any

implied

warranties

merchantability

tness

for

specific

purpose

and

will

not

liable

for

any

direct,

indirect,

incidental

consequential

damages.

Extech's

total

liability

limited

repair

replacement

the

product.

The

warranty

set

forth

above

inclusive

and

other

warranty,

whether

written

oral,

expressed

implied.

Support

Hotline

(781)

890-7440

Tech

support:

Ext.

200;

Email:

[email protected]

Repair/Retums:

Ext.

210;

Email:

[email protected]

Website:

www.extech.com

2001

Extech

Instruments

Corporation.

All

rights

reserved

including

the

right

reproduction

whole

part

any

form.

Model

407764

Version

1.3

October

2001

Altri manuali per 407764

Indice

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