09 1 0
NOTE:
When the meter is under "MAX MIN" operation, “°C”,
button are disabled.(when you press
button in "MAX MIN" mode, there will be two continuous
beep.)To exit the MAX/MIN mode, one may press and
hold "MAX MIN" for 2 seconds.
“°F” “°C”,“°F”
4.6 Read hold
The user may hold the present reading and keep it on
the display by pressing the "HOLD" button. When the
held data is no longer needed, one may release the
data-hold operation by pressing "HOLD" button again.
NOTE:
When the meter is under Data Hold operation, the
"MAX MIN" and “°C”,“°F”button are disabled. (when you
press “°C”,“°F”and "MAX MIN" button in HOLD mode,
there will be two continuous beeps.)
4.7 Timer operation
One may start the timer by press the "TIMER" button.
The counting can be stopped or continued by pressing
it again.
When the counting exceed 59min 59sec, the time scale
will be changed to hours and minutes. The counting can
be reset by press and hold "TIMER" button for 2 sec.
4.8 Back light
If the light is dark to make the reading difficult when
measuring, you can press“ ”button to open the back
light which will last for 15 sec. You can close it up at any
time once press“ ” button again.
NOTE:
• LED is the main source of back light. Its working
current is large, often use back light will shorten the
battery life, you’d better not to use the back light so
frequently unless it’s necessary.
• When the battery voltage is less than 7V, it will show
“ ” But if you use back light at the same time, maybe
“ ”will come up even if the battery voltage is more
than 7V, because the working current is higher and the
voltage will decline. (When“ ”shows, the accuracy of
the measurement can not be assured.)“ ”will not
show up. You need replace it till“ ”show again.
4.9 Auto power off
By default, when the meter is powered on, it is under
auto power off mode The meter will power itself off after
30 minutes if no key operation and no RS232
communication. Combination at power on can disable
auto power off.
One may press and hold "HOLD" button and then power
on the meter and there will be two successive beeps to
indicate that auto power off is disabled and the will
not show up.
4.10 Digital output
The Digital Output is a 9600bps N 81 serial interface.
4 11 Battery replacement.
4.11 1 If the sign “ ”appears on the LCD display, it
indicates that the battery should be replaced.
4.11.2 Turn the unit off. Remove the battery cover.
4.11.3 Replace the exhausted battery with a new one.
4.11.4 Put the battery cover as its origin.
.
4.12 Use the tripod connector
4.12.1 If needed, the meter can be fixed on the tripod.
4.12.2 The meter also can be hanged up for use.
HUMIDITY TEMPERAT U R E M E T E RHUMIDITY TEMPERAT U R E M E T E R