Lcd display – Sper Scientific 850069 Environmental Quality Meter w/Sound User Manual
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LCD DISPLAY
Sound–Level Measurement Units
dB
The decibel (dB) is a logarithmic unit of
measure that expresses the power or
intensity of an acoustic sound.
Light–Level Measurement Units
Lux
Ft-cd
x10
Both Lux and Ft-cd (Foot Candle)
measure luminance.
Lux = lumens per square meter.
Ft-cd = lumens per square foot .
X10 = Value displayed is 1/10 the value.
Air Velocity Measurement Units
ft/min
m/S
km/h
MPH
knots
Feet per minute
Meters per second
Kilometers per hour
Miles per hour
Nautical miles per hour
Relative Humidity Measurement Units
%
Relative humidity (RH) is a term used to
describe the amount of water vapor that
exists in the air and displays as a
percentage.
Temperature Measurement Units
°C/°F
Represents the temperature in either
Celsius or Fahrenheit degrees.
Record Mode and Hold Indicators
REC
MAX
MIN
HOLD
Meter is operating in Record Mode.
Maximum value recorded.
Minimum value recorded.
Meter display is in Hold Mode.
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