General Tools LTH8809DL User Manual

OPERATION MANUAL

WALL-MOUNTED

INDOOR AIR QUALITY

MONITOR& LOGGER

8808

8809

Models:

8808, LCD type temp.& RH%
8809, LED type temp.& RH%
8806, LCD type temperature
8807, LED type temperature

INTRODUCTION

Thank you for purchasing this wall-mounted
indoor air quality monitor ( 8806/07/08/09).
This meter is designed with big monitor,
audible/visible alarm and quick response
sensor to help you monitor the air temp &
humidity easily. The 16K Memory capacity
also help you to record the air quality any
time.

The monitor is divided into three distinct
sections for 8808 or two distinct sections
for 8809. There is no RH% display for 8806
8807 so one section of the monitor will
always shows - - - . The manual is written
based on 8808/09. For 8806/8807, please
neglect the description of humidity.

Please read this manual thoroughly before
operation. You will find it is a easy to operate
and a valuable instrument to measure &
record the air temperature & humidity.

MATERIAL SUPPLIES

The standard package of this product
contains:

The meter x 1pc
Operation manual x1pc
USB cable + CD x 1pc
Plain paper box x1pc
AA battery x 4pcs

The optional accessories are:

9V adaptor (>= 500mA. Depth:9mm
Inner: 1.35mm. Outer: 3.5mm)
33% & 75% calibration salt bottles
(VZ0033AZ1, VZ0075AZ1)for RH
calibration purposes.

Please contact the store where you bought
the meter to inquire above accessories.

1

FEATURES

The meter offers below functions:

Big 8808/8806) or
LED display (8809/8807)
Up to point

It is always needed to use adaptor
when using logging function

DISPLAY

LCD type 8808/8806

DP

REC

ALM

Y-M-D
H:M:S

%

REC

LED type 8809/8807

ALM

2

F

DP

8808/8806

- The primary display shows the measured
air temperature in C or F for both models.

- The secondary display shows the air
humidity for #8808.
In 8806, the section will be - - -

- Year/Month/Date and Hour/Minute/Sec­ ond are displayed interchangeably at

the bottom of the screen for both models.

- DP icon is at the left side of the primary
display for #8808 and the value is showed
on after DP icon.

- REC is at the left side of the primary
display for both models and will appear
when the meter is in logging status.

8809/8807

- The primary display shows the measured

air humidity in % for #8809. In 8807, the
section will be - - -

- The secondary display shows the air
temperature in C for both models. When
switching the unit to F, the F LED will lit.

- When switch the mode to DP, the DP
LED will lit and the value will show on the
secondary display

- REC LED is at the left side of the monitor
for both models and will lit when the meter
is in logging status.

Dot LED flash ( 8809 )

While in logging mode:

-DP LED flashing stands for temp.
exceeds the threshold setting.

-F LED flashing stands for the RH%
exceeds the threshold setting.

- REC LED flashing stands for the
meter is in logging status.
Beeper will sound if any of above is
happened(When adaptor is plugged)

NOTE:Beeper will not alarm when
adaptor is unplugged .

3

Dot LED flash ( 8808 ):

-REC LED flashes when the meter is in
the logging status.

-ALM LED flashes when temp. or RH
is exceeding threshold setting.

PORTS

Right side view

USB PORT

DC 9V

KEY PAD OPERATION

START

STOP

START

- / monitor by ing

STOP

the key

-S by pressing
the NOTE need to set

the start mode as KEY start)

-Change 33%RH calibration to 75%
caibration in RH calibration mode.

-Press START & SET keys at the
same time >2 sec to start 33%
RH calibration.

MODE

-Press key >2 sec to switch Dew
Point (8808/09) & air temperature.

-Press key <1 sec to switch temp.
unit.

SET

-In normal measurement mode,
press this key to enter set mode
in order to change and set up.

-Saving the setting: sample rate/
sample point/ start mode/ start
time/ real time/ alarm.

-Change the setting upwards.

MODE

SET

-Change the setting downwards.
4

LOGGER SETTING

There are two methods to set logger
parameters: Through PC or via meter's
keypad.

Press "SET" key to enter set mode.
There are 6 parameters in set mode:

-Sample Point:
'PtS' & 'P1' show on the screen .

-Start Mode:
' ' & 'P2' show on the screen.

-Start Time:
'Stt' & 'P3' show on the screen.

-Sample Rate:
'Sr' & 'P4' show on the screen.

-Alarm Set:
'AL' & 'P5' show on the screen.

-Real time:
'rtC' & 'P6' show on the screen

Press "Up" /"Down" to choose the mode.
Press "SET" to enter each mode.
Press "MODE" to escape to previous
status.

NOTE: If the start mode is not
Scheduled, you won't see the Start
Time in the setting menu.

Sample Point:

- After pressing "SET " key to enter, the
selectable sample point values will
appear. They are 1, 2, 4, 8, 12, 16.

1 means 1000 sample points. ....16

stands for 16000 points. For the models
measure relative humidity, 1 means
500 Temp +500 RH points , 16 means
8,000 Temp +8000 RH points.

By Keypad Setting

5