3M SD-200 User manual

Measuring Sound Pressure Level (SPL)
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Display and Keys
1. LEDs: Used in the LED Alert measurement screen
2. Screen indicators: Slow time response & Afrequency weighting (S, A is a common setting)
3. Measurement type (SPL, LEQ/LAVG, LEDAlert , MAX, MIN, Run-Time )
• Note: No indicator signies SPL
4. Measurement value
5. F/S (Fast/Slow time response) key
6. Mode key (cycles through measurement screens)
7. Run/Stop key for averaging values (LEQ/LAVG, MAX, MIN, LED Alert , Run-Time )
8. Power On/Off key
9. A/C frequency weighting key
1. Place windscreen over microphone (if not attached)
2. Power on the SD-200 and check that the battery indicator is not present.
• If present, charge the instrument prior to measuring.
3. Select desired weighting and/or response time. (See diagram #5 and #9.)
4. Position the SD-200 microphone so it is angled about 70 degrees from the noise source.
5. Measures: when rst powered on, the current SPL will be displayed or the last viewed parameter.
• For integrated measurements, press the Run/Stop key. (Unlike SPL, the LEQ/LAVG values
will provide steadier values over a period of time until values become more stable.)
• To view measurements, repeatedly press the Mode key. (This cycles through the measurements.)
• Press Run/Stop key to Stop measuring.
6. Power off by pressing and holding the key until it turns off (while not in run mode).
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3MTM Sound Detector SD-200

LED Alert levels
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IMPORTANT: For appropriate use of hearing protection devices, consult your company’s safety professional, applicable local
standards, or call 3M at 1-800-243-4630. (Note: Hearing protection sold separately.)
This screen displays LEQ/LAVG data and activates the LEDs at specic dB levels.
LED Alert Measurement Screen
Green LED: ashes when noise measurements are 80 - 85 dB
Yellow LED: ashes when noise measurements are 85- 105 dB
Red LED: ashes when noise measurements are above 105 dB
For more information, in United States, contact:
Website: www.3M.com/OccSafety
Technical Assistance: 1-800-243-4630
For other 3M products: 1-800-3M HELPS
Or 1-651-737-6501
©2011 3M Company
3M Occupational Health and Environmental Safety Division
3M Center Building 0235-02-W-70
St. Paul, MN 55144-1000
Printed in U.S.A.
34-8706-1605-8
Viewing Measurements
Pressing the mode key will cycle you through the measurement screens (as displayed below):
SPL LEQ/LAVG LED Alert
MAX MIN Run-Time