Triplett 9055 - Manual (Page 31)

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6. OPERATING INSTRUCTIONS
Measuring Sound Level
1. Set the Function Switch to the “dBC” position.
2. Hold the face of the meter perpendicular to the sound
source.
3. The sound level will be displayed.
Note:
Strong wind (over 20mph) striking the microphone can cause
reading errors.
Measuring Humidity
1. Place meter in the location to be measured. Allow meter
to set in this location for at least 2 hours.
2. Set the Function Switch to any position other than OFF.
3. Read Humidity (%RH) from the LCD.
Measuring Light Level
1. Set the Function Switch to “Lux” or “x10 Lux” range.
2. Hold the face of the meter perpendicular to the light
source.
3. Read the light level from the LCD display.
Notes:
If the LCD reads ‘OL’ (Over Load), set the meter to “x10 Lux”.
If already on the “x10 Lux” range, the light level exceeds the
measurement range of the meter.
When using the “x10 Lux” range, add a zero to the end of the
displayed value to obtain the correct light level.