- 13 -
4.1.3. Operation
1 - Hold the probe in the area to be tested & allow adequate
time for readings to stabilize.
2- Press ºF, ºC, dew point, WBT select Button to enter
select ºF , ºC , 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 sun!ight (in solation).
Don't touch or manipu!ate the sensor.
4.1.4. Battery replacement
lf 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).
4.2. Flashlight / Magnifier
This is a handy microscope with built-in illumination and
specially designed vertically sliding light condenser for
transmitting the concentrated light onto the object to be
viewed. It is useful for observing details of minute articles
which can´t be seen by naked eyes. The focus can be
easily adjusted to obtain the sharpest vision. It can also be
used as a torch.
4.2.1. Components
1. Eyepiece
2. Battery Compartment Cover
3. Focusing Wheel
4. Vertical Sliding Light Condenser
5. Power Switch
6. Bulb
7. Transparent Cover
4.2.2. Operation
1. Put the transparent cover (No.7) on the object with the
hole on the part to be viewed.
2. Switch on the light and slide down the Light Condenser
(No.4) to adjust the light for best illumination on the object.
3. Look through the Eye-piece (No.1) and turn the Focus
Wheel (No.3) to obtain the sharpest vision.
4.2.3. Battery replacement
1. Open the Battery Compartment Cover (No.2) by sliding
at the direction as the arrow point shows.
2. Take out the old batteries and replace two new AA batteries.
3. Close the Battery Compartment Cover.
4.2.4. Replacing bulb
1. Remove the Transparent Cover (No.7) by sliding in
directions as shown in the sketch.
(
NOTE: The Light Condenser (No.4) must be retracted)
2. Unscrew the faulty bulb.
- +
1
3
4
5
2
7
6
A
A
