Greenlee SM-100 Bedienungsanleitung

SM-100

SOUND METER

MEDIDOR

DE SONIDO

SONOMETRE

Read and understand all of the instructions

and safety information in this manual before

operating or servicing this tool.

Lea y entienda todas las instrucciones y la

información sobre seguridad que aparecen

en este manual, antes de manejar estas

herramientas o darles mantenimiento.

Lire attentivement et bien comprendre toutes

les instructions et les informations sur la sécurité

de ce manuel avant d‘utiliser ou de procéder à

l‘entretien de cet outil.

INSTRUCTION MANUAL

MANUAL DE INSTRUCCIONES

MANUEL D’INSTRUCTIONS

Description

The Greenlee SM-100 Sound Meter is a hand-held testing device intended to

measure sound levels from 35 dB to 130 dB, from 31.5 Hz to 8 kHz. The

frequency-weighted response and response times are in accordance with the

requirements of IEC 651/ANSI S1.4 for Type 2 sound level meters.

Specialized functions and capabilities include:

• Two measurement scales: A-weighted scale (for common sounds) and

C-weighted scale (for low frequency sounds).

• AC and DC signal output for interfacing with a frequency analyzer, level

recorder, FFT analyzer, graphic recorder, etc.

• Three response modes: Slow (slow response time, for recording

continuous sounds), Fast (fast response time, for capturing short bursts or

intermittent noise), and Maximum Hold (for holding the maximum

measured sound level on the display).

• Tripod mount: A threaded hole (1/4–20 UNC) provides a method for tripod

mounting for long-term temperature measurement.

Safety

Safety is essential in the use and maintenance of Greenlee tools and

equipment. This instruction manual and any markings on the tool provide

information for avoiding hazards and unsafe practices related to the use of

this tool. Observe all of the safety information provided.

Purpose

This instruction manual is intended to familiarize all personnel with the safe

operation and maintenance procedures for Greenlee SM-100 Sound Meter.

Keep this manual available to all personnel.

Replacement manuals are available upon request at no charge.

Greenlee and are registered trademarks of Greenlee Textron.

KEEP THIS MANUAL

SM-100

Important Safety Information

This symbol is used to call your attention to hazards or unsafe

practices which could result in an injury or property damage. The

signal word, defined below, indicates the severity of the hazard. The

message after the signal word provides information for preventing or

avoiding the hazard.

SAFETY ALERT SYMBOL

Immediate hazards which, if not avoided, WILL result in severe injury

or death.

Hazards which, if not avoided, COULD result in severe injury or death.

Hazards or unsafe practices which, if not avoided, MAY result in injury

or property damage.

Read and understand this material before

operating or servicing this equipment. Failure to

understand how to safely operate this tool can

result in an accident causing serious injury or

death.

Important Safety Information

Electric shock hazard:

Contact with live circuits can result in severe

injury or death.

Electric shock and fire hazard:

• Do not expose this unit to rain or moisture.

• Do not use the unit if it is wet or damaged.

• Inspect the accessory before use. It must be clean and dry, and the

insulation must be in good condition.

• Use this unit for the manufacturer’s intended purpose only, as

described in this manual. Any other use can impair the protection

provided by the unit.

Failure to observe these warnings can result in severe injury or death.

SM-100

Important Safety Information

• Do not attempt to repair this unit. It contains no user-serviceable

parts.

• Do not expose the unit to extremes in temperature or high humidity.

See Specifications.

Failure to observe these precautions can result in injury and can

damage the unit.

Using this unit near equipment that generates electromagnetic

interference can result in unstable or inaccurate readings.

• Do not operate with the case open.

• Before opening the case, shut off the unit.

Failure to observe this warning can result in severe injury or death.

Identification

1. Windscreen Recommended when wind speed exceeds

10 m/s (20 mph)

2. Microphone 1/2" electric condenser microphone

3. Display LCD

4. Function Switch See explanation under Features

5. Calibration Screw Calibration control can be adjusted clockwise

or counterclockwise to standard 94.0 dB

6. Tripod Mount 1/4–20 UNC thread (on back)

7. AC/DC Output Terminal See Specifications

8. Reset Button See explanation under Features

9. Response Switch See explanation under Features

10. Range Switch Selects a range (Lo or Hi), and turns power off

Display Icons

11. OVER The measured value is too high

or too low for the selected scale

12. MAX HOLD The Maximum Hold function

is enabled

13. dB Decibels (measurement unit

of sound pressure)

14. BT Battery low

410

12 13

SM-100

Features

• Range Switch:

Lo for the lower measurement range (35 dB to 90 dB)

Hi for the higher measurement range (75 dB to 130 dB)

• Response Switch:

S (slow response time) for recording continuous sounds

F (fast response time) for capturing short bursts or intermittent noise

Max Hold for holding the maximum measured sound level on the display

• RESET: Press to reset the MAX HOLD function.

• Function (FUNCT) Switch

A-weighted scale (for common sounds)

C-weighted scale (for low-frequency sounds)

• Windscreen: Slide the windscreen over the end of the microphone to

reduce interference from wind. The windscreen is recommended when

wind speed exceeds 10 m/s (20 mph).

• Tripod Mount: Mount the unit to a tripod (purchased separately) for long-

term measurements.

Calibration Using Internal Oscillator

1. Make the following switch settings:

Range: Hi

Response: F

Function: CAL 94 dB

2. Adjust the calibration screw until the display reads 94.0 dB.

3. Annual recalibration is recommended.

Operation

1. Use the Range switch to select a measurement range (Lo or Hi).

2. Use the Response and Function switches to select the various options

(described under Features).

3. Read the display.

4. Turn the unit off.

Specifications

Display

Display Type: 4-digit LED

Sampling Rate: 20 per second

Display Period: 0.5 seconds

Measurement Ranges and Characteristics

Low: 35 dB to 90 dB

High: 75 dB to 130 dB

Dynamic Range: 55 dB

Frequency Range: 31.5 Hz to 8 kHz

Frequency Weighting:

A-weighted Scale: For common sounds (500 Hz to 8 kHz) such as human

voice, electric tools, telephone ringer, and door bell

C-weighted Scale: For low frequency sounds (31.5 Hz to 500 Hz) such as

fluorescent lights, transformers, and computer power supply fans

–10

–20

–30

–40

–50

–60

–70

–80

10 100 1000

Frequency—Hz

Response—dB

10000 100000

A-weighted

C-weighted

Response curve

per ANSI S1.4.

Solid portion

shows frequency

range of this

instrument.

Time Weighting:

Fast: 125 ms

Slow: 1 s

Accuracy: ±1.5 dB (under reference conditions)

Resolution: 0.1 dB

SM-100

Specifications (cont’d)

Measurement Output

AC Output Voltage: 0.65 VRMS at full scale

AC Output Impedance: 600 ohms (approximately)

DC Output Voltage: 10 mV per dB

DC Output Impedance: 100 ohms (approximately)

General

Operating Conditions: 0 °C to 40 °C (32 °F to 104 °F), 10 to 90% relative

humidity

Storage Conditions: –10 °C to 60 °C (14 °F to 140 °F), 10 to 75% relative

humidity; remove batteries

Elevation: 2000 m (6500') maximum

Maximum Hold: Reading decays < 1 dB per 3 minutes hold time.

Calibration Screw: Electrical calibration with internal oscillator

(1 kHz sine wave).

Battery: 9 V battery (NEDA 1604, JIS 006P or IEC 6F22)

DC Output

AC Output Signal Common

Maintenance

1. Turn the unit OFF.

2. Remove the battery compartment cover.

3. Replace the battery (observe polarity).

4. Replace the cover.

Cleaning

Periodically wipe the case with a damp cloth and mild detergent; do not use

abrasives or solvents.

• Do not attempt to repair this unit. It contains no user-serviceable

parts.

• Do not expose the unit to extremes in temperature or high humidity.

See Specifications.

Failure to observe these precautions can result in injury and can

damage the unit.

Before opening the case, shut off the unit.

Failure to observe this warning can result in severe injury or death.

Battery Replacement

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