Maintenance; Battery Replacement - Extech Instruments SL400 User Manual

Maintenance
Battery Replacement
When the battery icon (
meter and remove the rear battery cover. Remove battery from the battery holder and insert a
new 9V battery (Alkaline) observing correct polarity. Re‐install the battery cover.
o Please dispose of batteries responsibly; observe all regulations.
o Never dispose of batteries in a fire; batteries may explode or leak.
Cleaning
To clean the instrument, use a soft dry cloth to remove dust from the meter housing. Do not
touch the microphone sound entry port. Never use wet cloths, solvents, or liquids to clean the
meter housing.
A, C, and Z Weighting Considerations
The A weighting curve is based on 40 Phon fletcher‐Munson Equal Loudness Contour. For noise
assessments of the effects of noise on human hearing, the A weighting mode is recommended.
The C weighting mode is recommended for machine sound monitoring (steady, drone type).
The Z weighting offers a linear signal response that is not processed through the meter's filter. Z
weighting is suitable for monitoring electrical signals (AC or DC signals for research purposes, for
example).
Appendix A
Dose Standards Selection list
OSHA
MSHA
DoD
ACGIH
ISO85
ISO90
User
nd Quality Products Online at:
) appears on the LCD, the battery must be replaced. Turn off the
All EU users are legally bound by the Battery Ordinance to return all used batteries to
community collection points or wherever batteries / accumulators are sold!
Disposal in household trash or refuse is prohibited!
Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the
end of its lifecycle
Occupational Safety and Health Administration (USA)
Mine Safety and Health Administration (USA)
Department of Defense (USA)
American Conference of Governmental Industrial Hygienists (USA)
European
European
User defined parameters (settings can be saved to a file Import/Export)
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