Extech Instruments SL130W Bedienungsanleitung

User Manual

Sound Level Alert

Model SL130

www. .com information@itm.com1.800.561.8187

SL130-EU-EN v3.6 08/13

Introduction

Thank you for selecting the Extech SL130 Sound Level Alert. Designed for wall mount, tripod

mount, desktop, or hand held operation this meter meets ANSI and IEC Type 2 Sound Level Meter

standards.

The SL130 offers a High/Low Alarm Limit feature where four two-color high intensity LEDs and a

large OVER indicator provide alarm alerts when limits are exceeded. The SL130’s physical Alarm

Output circuit can be used to drive the optional Alarm Module Kit to power a larger, remote

indicating device such as a “QUIET” sign.

Professional features include programmable A/C Weighting, Fast/Slow Response time, Max

Memory with time stamp, and a Clock display. The microphone can be rotated 180 degrees to

accommodate any meter location or it can be placed at a remote location using the optional Remote

Microphone Cable. A programmable ON/OFF time extends battery life to 30 days when

programmed 8 hours per day. The bright LED’s are functional only when the AC power adaptor is

used.

This device is shipped fully tested and calibrated and, with proper use, will provide years of reliable

service.

www. .com information@itm.com1.800.561.8187

SL130-EU-EN v3.6 08/13

30-80

LIMIT

80-130

60-110

123456

Meter Description

1. Microphone

2. Over Limit Display

3. Bargraph

4. dB display

5. OFF/ON/AUTO switch

6. Alert LEDs

7. Clock display

8. Max level display with time stamp

9. Set limit

10. MAX RESET button

Rear Control Panel

1. Range select switch

2. Time set buttons

3. Limit set buttons

4. Calibration adjustment

5. A/C select button

6. F/S select button

Side Panel

1. Alert switch – Green position

2. Alert switch – Red-Green position

3. Alert switch – Red position

4. High-Low Alarm switch

5. Remote Alarm output connector

6. AC adaptor connector

Rear Panel

1. Tilt stand

2. Battery compartment

3. AC Adaptor connector

4. Remote Alarm output connector

5. Windscreen

www. .com information@itm.com1.800.561.8187

SL130-EU-EN v3.6 08/13

Sound Level Monitor Operation

Measurement Considerations

1. Use a windscreen to cover the microphone in windy conditions.

2. Calibrate the meter often, especially if the meter has been idle for a long period of time.

3. Do not store/operate the meter in areas of high temperature or humidity.

4. Keep the meter and the microphone dry.

5. Avoid severe vibration when using the meter.

6. Remove the battery when the meter will be stored for long periods of time.

Initial Configuration

1. Connect the AC adaptor to the side or rear AC adaptor connector

OR Install 8 AA batteries

2. Setting the TIME

a) Press and Hold the Time SET button until the hours display begins to flash.

b) Press the Time up arrow button until the hour is set.

c) Press the SET button. The minutes display will flash. Adjust as needed.

d) Press the SET button to step through and the arrow button to adjust;

Time of day Hour

Time of day Minutes

Time of day AM / PM / 24 Hour

Year

Month

Day

Auto ON Hour

Auto ON Minutes

Auto OFF Hour

Auto OFF Minute

A/C Frequency Weighting

Change the Frequency Weighting by pressing the 'A/C' button. The 'A' or 'C' icon will appear on the

display.

With ‘A’ weighting selected, the frequency response of the meter is similar to the response of the

human ear. ‘A’ weighting is commonly used for environmental or hearing conservation programs

such as OSHA regulatory testing and noise ordinance law enforcement. ‘C’ weighting is a much

flatter response and is suitable for the sound level analysis of machines, engines, etc.

Most noise measurements are performed using 'A' Weighting and SLOW Response.

Slow/ Fast Response

Press the ‘F/S’ button to select Fast or Slow response as desired. F or S will appear in the bottom

of the LCD display.

Select FAST to capture noise peaks and noises that occur very quickly. Select the SLOW response

to monitor a sound source that has a consistent noise level or to average quickly changing levels.

Select SLOW response for most applications.

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SL130-EU-EN v3.6 08/13

Range Selection

Slide the Range switch to the 30-80, 60-110 or the 80-130 position. The selected

range will be indicated on the LCD bar graph. If the measured dB level exceeds

the range selected “OL” will be displayed. If the measured dB level is below the

selected range “- - -“ will be displayed.

Normally, select the range in which the upper dB level is greater than any expected sound

pressure level. The 60 to 110dB range is the most commonly used range. Use the 30 to

80dB range in quieter areas such as offices and classrooms.

Note: When the range is changed the Max display may indicate an overload “OL”. Press

the MAX RESET button to clear the MAX display.

High Limit Set

Press the up or down LIMIT arrow buttons to set the High/Low limit set=point

as displayed on the LCD. If the measured dB level exceeds the set limit, the

OVER indication will appear in the display and the over limit signal will appear

at the alarm output connector. The display indication and output signal will

remain active as long as the sound pressure level exceeds the set limit.

High/Low LED Alert

The four LEDs are used to alert users when a sound level either exceeds or goes below the Limit

set-point. This feature is available only while the AC adaptor is used to power the meter. It is

disabled under battery power.

The LEDs will provide a steady or flashing colored indication depending on the setting of the side

panel ALARM and Alert switch settings.

The three Alert switch positions are: (1) RED, (2) RED-GREEN, (3) GREEN

Alarm

Switch

Alert Switch LED response

Red (1) LED’s flash red while dB level exceeds set point.

Red-Green (2)

LED’s flash red while dB level exceeds set point.

40 second green indication when level transitions from high

to low.

High

ALARM

Green (3) 40 second green indication when level transitions from high

to low.

Green (3) LED’s are green while dB level is below set point.

Red-Green (2)

LED’s are green while dB level is below set point.

40 second flashing red indication when level transitions from

low to high.

Low ALARM

Red (3) 40 second flashing red indication when level transitions from

low to high.

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SL130-EU-EN v3.6 08/13

MAX Hold

The MAX display indicates and holds the highest dB level measured since the

meter was turned on or since the Max Reset button was pressed. The time and

date of the max reading is also displayed.

To clear the display and start a new measurement session, press the front panel

MAX RESET button. If the measured level exceeds the maximum for the range

selected the MAX display will indicate “OL” (overload).

Programmable OFF/ON/AUTO time

The meter is powered by 8 AA batteries or via an AC adaptor for permanent installations.

Continuous battery life is approximately 240 hours (10 days). By programming the ON/OFF time,

the battery life can be greatly extended (30 days assuming an 8 hour day). The ON and OFF times

are programmed as described in the initial configuration paragraph. The meter will

operate continuously with the power switch in the ON position. The ON/OFF time

will be controlled by the meter when the power switch is set to the AUTO position.

Calibration

The sound level meter should be calibrated on a regular basis to assure

that the meter’s performance and microphone sensitivity has not

change. Some operational directives require daily calibration checks

(OSHA). Extech offers several acoustic calibrators to perform the

calibration.

1. Set the meter to the 60 to 110dB or 80 to 130dB range.

2. Place the external calibrator over the Sound Level Monitor's

microphone and turn the Calibrator on.

3. The meter should read close to the calibrator's dB output level.

Typical Calibrator output levels are 94dB and 114dB.

4. If the meter is within ± 0.2 dB of the calibrator’s output, no

adjustment is necessary.

5. Adjust the calibration pot on the rear of the meter to the proper level.

Meter Placement

The meter can be used Handheld, Wall mounted, Desk mounted or Tripod mounted. For wall mount

operation, orient the microphone perpendicular to the wall to minimize the affect of acoustic

reflections. For desk mounting, extend the rear legs and lock in place with the hinged locks. The

tripod mounting nut is located on the bottom of the unit.

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SL130-EU-EN v3.6 08/13

Remote Microphone (optional)

The optional 15’ remote microphone cable can be

used to place the microphone in one location while viewing

the dB levels and/or generating a high limit alarm at another location. To

remove the microphone, unscrew the holding collar and lift the

microphone off the connector. The extension cable can then be plugged

into the matching connectors. Calibration should be performed after the

cable is installed.

Alarm Output (optional)

The alarm output drives the optional Remote Alarm Relay Module (cable and relay) when the LIMIT

set point is exceeded. The relay module can be used to power external warning signs, “QUIET”

signs or other indicating devices when the sound level is higher than the programmed limit. Refer to

the manual supplied with the module for connection information.

Rear AC Adaptor and Alarm outputs.

www. .com information@itm.com1.800.561.8187

SL130-EU-EN v3.6 08/13

Battery Replacement

AC power is the normal power source for this meter. If 8 AA batteries are used, they are located in

the rear battery compartment. When the battery icon appears on the meter's LCD, it is time to

replace the batteries.

1. Turn power off.

2. Open the rear battery cover

3. Insert the batteries into battery holder, observing the correct polarity.

4. Put the battery cover back in place.

You, as the end user, are legally bound (Battery ordinance) to return all used batteries

and accumulators; disposal in the household garbage is prohibited!

You can hand over your used batteries / accumulators at collection points in your

community or wherever batteries / accumulators are sold!

Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the

end of its lifecycle

Specifications

Applicable standards Meets IEC 60651-1979 and ANSI S1.4 1983 Type 2 SLM

standards

Display 11.7 x 7.94cm (4.6” x 3.125”) multifunction LCD

Frequency bandwidth 31.5 Hz to 8 KHz

Accuracy / Resolution ± 1.5dB (under reference conditions) / 0.1dB

Microphone 0.5” Electret Condensor Microphone (remote mic option)

Measurement ranges 30 to 80dB, 60 to 110dB, 80 to 130dB

Frequency weighting ‘A’ and ‘C’

Response time Fast (125ms) / Slow (1s)

Max Hold Maximum reading is displayed with time stamp

Alarm output 3.5mm Mono Phone Plug, 3.4mA @ 5 Vdc, typical

Limit range 30 to 130dB

Under range indication “- - -“

Over range indication “OL”

Power AC adaptor (9V@500ma) or 8 AA batteries

Battery life 240hrs continuous (approx); 30 days @ 8hrs/day

(LED’s are not functional when battery powered)

Operating temperature 0 to 50oC (32 to 122oF)

Operating humidity Less than 80% RH

Dimensions / Weight 22x18x3.2cm / 285g (8.75x7.1x1.25" / 0.63 lbs).

www. .com information@itm.com1.800.561.8187

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