Sper Scientific 850070 Environmental Quality Meter - Mini - Manual (Page 5)

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3. RH Measurement & Temperature
• Press the FUNCTION button (fig 1-6) to
select the RH function.
• Press the °C/°F button (fig 1-5) to select
Centigrade or Fahrenheit.
• The RH results and ambient tempera-
ture are displayed on the LCD.
• When environmental changes occur,
such as moving the meter to a new
location, allow a few minutes for the
meter to stabilize.
4. Light Measurement
• Press the FUNCTION button (fig 1-6) to
select the Light function. The reading
appears inverted on the LCD.
• Press the LUX/FT-CD button (fig 1-5) to
select the unit of measure
• Point the LIGHT SENSOR (fig 1-10),
toward the light source to be measured.
• The results are shown on the LCD.
• The overload indicator ("- - - - ") is
displayed if the range is exceeded.
• The zero-point may drift because of
climate changes or when the battery
becomes weak. To reset the zero-
point, block out any light source by
covering the LIGHT SENSOR, then
press the UNIT/ZERO button (fig 1-4) .
B. ADDITIONAL FUNCTIONS
1. Data Hold: During the measuring
procedure, press the HOLD button (fig
1-2) to freeze the measured value. The
LCD will also display the word: "HOLD."
To exit, press the HOLD button again
.