p
p
p
p
Humidity / Air Temperature Probe : Humidity & and
Temperature Semiconductor Sensor inside.
q
q
q
q
LCD Display: 4-1/2 dual digits LCD display with units of
@
,
Ｒ
, %RH dew point, wet bulb and low battery “BAT”
MIN /MAX HOLD, indication.
r
r
r
r
MAX/ MIN Button: Press MAX/MIN button to enter MAX, MIN
Recording mode (manual range only ). Select the proper range
before selecting MAX MIN to ensure that the MAX/MIN reading
will not exceed the testing range. Press once to select MIN.
Press again to select MAX. Press and hold the Button for over 2
second to turn off MAX, MIN Recording.
s
s
s
s
Ｒ
Ｒ
Ｒ
Ｒ
,
@
@
@
@
, Dew Point
＄
＄
＄
＄
Wbt Select Button: Press
Ｒ
,
@
, Dew
Point
＄
Wbt select Button to enter select
Ｒ
,
@
,Dew Point,
Wet Bulb Measurement.
WET BULB is the evaporation temperature at the current
humidity. DEW POINT is the temperature at which humidity
condenses.
t
t
t
t
!
!!
!
Power ON/OFF Button: Turn the meter power ON/OFF.
u
!
HOLD /Backlight Button: Press Hold/backlight Button to
enter hold function. The reading will be held when Data
Hold button is pressed. Press Hold/backlight Button for
over 2 seconds to turn on or off backlight function.
v
v
v
v
!
!!
!
Battery Compartment
5.
HUMIDITY
AND
AIR
TEMPERATURE
MEASUREMENTS
1.
Hold the probe in the area to be tested & allow
adequate time for readings to stabilize.
2.
Press
Ｒ
,
@
, dew point, WBT select Button to enter
select
Ｒ
,
@
, dew point Wet Bulb Measurement.
3.
Read the Relative Humidity and Air Temperature, dew
point temperature wet bulb temperature.
NOTE:
Do not immerse the probe in liquid; it is intended for use in air
only.
Warning:
Don’t expose the sensor to direct sunlight ( in solation ).
Don’t touch or manipulate the sensor.
6. BATTERY REPLACEMENT
If the sign “ ” appears on the LCD display, it indicates
that the battery should be replaced. Open the battery case
and replace the exhausted battery with new battery. (1 x 9V
battery NEDA 1604, 6F22 or equivalent).
