CEM DT-9881 User manual

Particle Counter
User Manual
Please read this manual before switching the unit on.
Important safety information inside.
MODEL:
DT-9881
MODEL:
DT-9881
MODEL:
DT-9880
MODEL:
DT-9880
www.eastern-energy.com

Video Borescope User Manual
Particle Counter User Manual
Contents
1.Introduction.................................................................................................................
2.Features......................................................................................................................
3.Specification...............................................................................................................
4.Front Panel And Button Description..............................................................................
5.Power on or Power off.................................................................................................
6.Measurement Mode.....................................................................................................
7.Particle Counter measurement mode...........................................................................
8.HCHO Measurement mode(The DT-9881 has the unique function)...............................
9.CO Measurement mode(The DT-9881 has the unique function)....................................
10.Strorage File Browser.................................................................................................
11.System Settings........................................................................................................
12.Help File....................................................................................................................
4
4
5
6
6
6
8
11
14
16
17
20
Eastern Energy Co., Ltd.
40/4 Vitoondumri Rd., Banbueng
Banbueng, Chonburi, Thailand
Tel: [phone]
7
[email protected].th
www.eastern-energy.com

1.Introduction
Thank you for purchasing this 4 in 1 Particle Counter instrument.This instrument is Particle Counter
with 2.8" color TFT LCD display & a microSD memory card for capturing imags(JPEG) or video
(3GP) for viewing on your PC. Proving fast,easy and accurate readings for particle counter, GAS
(HCHO,CO) detectors(only DT-9881),air temperature & relative humidity,most surface temperature
measurements. It is the first combination of these measurements in global.Would be the best
instrument for environment protection and energy save.The dewpoint temperature measurement
will be very visiable for wet and dry proof.It is a good hand industrial measurements and data
analyzing,the real scene and time can be displayed on color TFT LCD.Any memory readings can
be recorded in SD card.The user can be back in offce to analyze the measured air quality under
the support of software.
2.Features
• 2.8"TFT Color LCD display
• 320*240 pixels
• Images(JPEG)& Video(3GP)
• MicroSD(max,use 8GB)memory card
• Simultaneously measure and display 6 channel of particle sizes.
• HCHO detectors
• CO detector
• Air temperature and humidity
• Dewpoint & Wetbulb temperature
• MAX,MIN,DIF,AVG record,Date/time setup controls
• Auto Power Off
Video Borescope User Manual
Particle Counter User Manual
4
Eastern Energy Co., Ltd.
40/4 Vitoondumri Rd., Banbueng
Banbueng, Chonburi, Thailand
Tel: [phone]
7
[email protected].th
www.eastern-energy.com

Video Borescope User Manual
Particle Counter User Manual
5
3. Specifications
Air Temperature Range
Dewpoint Temperature Range
Relative Humidity Range
Air temperature Accuracy
Dewpoint temp. Accuracy
Relative Hum. Accuracy
Operating Temperature
Storage Temperature
Relative Humidity
Display
Power
Battery
Battery Life
Battery Charge Time
0°C to 50°C(32°F to 122°F)
0°C to 50°C(32°F to 122°F)
0 to 100%RH
±0.5°C(0.9°F) 10°C to 40°C
±1.0°C(1.8°F) others
±0.5°C(0.9°F) 10°C to 40°C
±1.0°C(1.8°F) others
±3%RH 40% to 60%
±3.5%RH 20% to 40% and 60% to 80%
±5%RH 0% to 20% and 80% to 100%
0°C to 50°C(32°F to122°F)
-10°C to 60°C(14°F to 140°F)
10 to 90%RH non-condensing
2.8”320*240 Color LCD with backlight
Rechargeable battery
About 4 hours continuous use
About 2 hours with AC adapter
Air temperature and Relative humidity measurement
Particle Counter
Channels
Flow Rate
Counting Efficiency
Coincidence Loss
Data Storage
Count Modes
HCHO Measure
Range
Basic Accuracy
Display resolution
CO Measure
Range
Basic Accuracy
Display resolution
0.3,0.5,1.0,2.5,5.0,10um
3
0.1ft (2.83L/min)
50% @ 0.3 µm; 100 % for particles > 0.45 µm
3
5% at 2,000,000 particles per ft
5000 sample records (MicroSD card)
Cumulative, Differential,Concentration,
0.01~5.00PPM
±5%F.S
0.01ppm
10~1000PPM
±5%F.S
1ppm
www.eastern-energy.com

4. Front Panel And Button Description
5. Power on or Power off
On the power off mode,press and hold button,until the LCD is on,then the unit will power on.
On the power on mode,press and hold button,until the LCD is off,then the unit will power off.
6. Measurement Mode
This instrument has three modes
On the power on mode, the unit will display the three measure
modes, and display three setup options.You can use or button
to select any measure mode you need.and use function button F1,F2,
F3 to enterthe system interface.
USB Interface
AC/DC adapter
Particle Sensor
TEMP.%RH Sensor
Camera Sensor
CO Sensor
HCHO Sensor
Battery Cover
Partlue Counter button
Page down button
Back up button
RUN
STOP
Particle Counter
F1 F2 F3
ESC ENTER
RUN
STOP
Power ON/OFF button
Color LCD Display
Function button
Page up button
Measure button
Function button
Video Borescope User Manual
Particle Counter User Manual
6
www.eastern-energy.com

Description
Particle Counter measurement
HCHO Detector measurement
CO Detector measurement
Memory Set
System Set
Help file
Items
Symbols
Symbol Symbol
Description
Cumulative mode
Concentration mode
HOLD
CAM mode
Video mode
Description
Differential mode
Scan
Alarm working
CO detection mode
HCHO detection mode
Video Borescope User Manual
Particle Counter User Manual
7
Eastern Energy Co., Ltd.
40/4 Vitoondumri Rd., Banbueng
Banbueng, Chonburi, Thailand
Tel: [phone]
7
[email protected].th
www.eastern-energy.com
www.eastern-energy.com

7. ParticleCounter measurement mode
On the power on mode,you can use the or button to select ,then press the
ENTER button to enter the Particle Counter mode, Start to measure and display temperature and
humidity.
Press RUN/STOP button to start detection of particles,when the sample time is up,the particle
measurement will automatically stop,and the data will automatically save.You can also,press
RUN/STOP button to stop the measurement when the sample time is not up. This mode can take
picture and take video
7.1 Take picture function
On the particle counter mode,you can see icon,and these icon
corresponding to F1,F2,F3 button,press F1 button can enter picture taking,
icon will appear,you can press F2 button to take picture.Press "ESC" button to exit this mode.
7.2 Take video function
On the particle counter mode,you can see icon,and these icon
corresponding to F1,F2,F3 button.press F2 button can enter video taking mode,Press the RUN/STOP
button to start the particle measurement,the instrument start to measure the particle,TheLCD
display icon,press F2 button to take video and press F2 button again to stop
take video,The video file will be auto to saved.Press ESC button to exit this mode.
7.3 Particle Setup mode
On the particle counter mode,you can see
icon,and these icon corresponding to F1,F2,F3,press F3 can
enter the setup mode,on this mode,you can setup any parameter
you want.Use the or button to select any option you want
to setup.
Then press ENTER button to confirm the parameter.
Video Borescope User Manual
Particle Counter User Manual
8
www.eastern-energy.com

Sample time
You can adjust the sample time use the or button to control the volume of measured gas.
It can be set to 60s/2.83L.
Start Delay
You can adjust the time use the or button to control start time.The delay time of up to 100
seconds.
Channel Display
This setting to select the channel is being displayed.Use the or button to select channel and use
ENTER button to confirm.
Video Borescope User Manual
Particle Counter User Manual
9
Eastern Energy Co., Ltd.
40/4 Vitoondumri Rd., Banbueng
Banbueng, Chonburi, Thailand
Tel: [phone]
7
[email protected].th
www.eastern-energy.com
www.eastern-energy.com

Ambient Temp/%RH
Choose this seting if the Air temperature and humidity are displayed..
Sample Cycle:This option is used to set the sampling period.
Sample Mode
This setting to set the display mode of particle counter.When You select the cumulative mode,the
particle measure will display symbol and the meter work in the cumulative mode.When you
select the differential mode,the particlemeasure will display symbol and the meter work in the
differential mode.When you select the concentration mode,the particle measure will display
symbol and the meter work in the concentration mode.
Interval
Set the time between samples for the sampling period is greater than one times.The longest interval
is 100 seconds.
Video Borescope User Manual
Particle Counter User Manual
10
Eastern Energy Co., Ltd.
40/4 Vitoondumri Rd., Banbueng
Banbueng, Chonburi, Thailand
Tel: [phone]
7
[email protected].th
www.eastern-energy.com
www.eastern-energy.com

Level Indication
Select the alarm level of the corresponding particle size in the measurement,when the selected
particle size exceeded,the instrument measuring interface will have exceeded the prompt.
8. HCHO Measurement mode(The DT-9881 has the unique function)
On the power on mode,you can use the or button to select, then press ENTER
button to enter the HCHO measure mode,Start to measure HCHO,air temperature and humidity after
clearing a few seconds.Press RUN/STOP button to stop or open the measurement.This mode can
take picture and take video.
Video Borescope User Manual
Particle Counter User Manual
11
Eastern Energy Co., Ltd.
40/4 Vitoondumri Rd., Banbueng
Banbueng, Chonburi, Thailand
Tel: [phone]
7
[email protected].th
www.eastern-energy.com
www.eastern-energy.com

8.1 Take picture function
On the HCHO mode,you can see icon,and these icon corresponding
to F1,F2,F3 button,press F1 can enter picture taking mode. Icon will
appear,you can press F2 button to take picture.Press ESC button to exit this mode.
8.2 Take video function
On the HCHO mode,you can see icon,and these icon corresponding to
F1,F2,F3 button,press F2 can enter video taking mode,Press the RUN/STOP button to start the
HCHO measurement,The LCD display icon,press F2 button to take video and
press F2 button again to stop take video,The video file will be auto to saved.Press ESC button
to exit this mode.
8.3 HCHO Setup mode
On the HCHO mode,you can see icon,and these icon corresponding
to F1,F2,F3 button,press F3 can enter the Setup mode,on this mode,you can setup any parameter
you want.Use the or button to select any option you want to setup.Then press ENTER button
to confirm the parameter.
Start Delay
Set the waiting time before the start of measurement.Press ENTER button to select the time and
adijust the time with the or button.
Video Borescope User Manual
Particle Counter User Manual
12
www.eastern-energy.com

HCHO Alarm
Set the alarm value of HCHO.Optional alarm off and turn the alarm function.You can set the size
of the alarm parameters.
Max/Min
Set whether to display the measured maximum,minimum.
Average/Dif
Set whether to display the value of average or different.
Ambient Temp/%RH
Set whether to display the air temperature and relative humidity.
Dewpoint/Wetbulb
Set whether to display the dewpoint and wetbulb.
Video Borescope User Manual
Particle Counter User Manual
13
www.eastern-energy.com

9.CO Measurement mode(The DT-9881 has the unique function)
On the power on mode,you can use the or button to select ,then press
ENTER button to enter the CO measure mode, Start to measure CO,air temperature and humidity after
clearing a few seconds.Press RUN/STOP button to stop or open the measurement. This mode can
take picture and take video.
9.1Take picture function
On the CO mode,you can see icon,and these icon corresponding to F1,
F2,F3 button,press F1 can enter picture taking mode. icon will appear,you
can press F2 button to take picture.Press ESC button to exit this mode.
9.2 Take video function
On the CO mode,you can see icon,and these icon corresponding to F1,
F2,F3 button,press F2 can enter video taking mode,Press the RUN/STOP button to start the CO
measurement,The LCD display icon,press F2 button to take video and press
F2 button again to stop take video,The video file will be auto to saved.Press ESC button to exit
this mode.
9.3 CO Setup mode
On the CO mode,you can see icon,and these icon corresponding to F1,
F2,F3 button,press F3 can enter the Setup mode,on this mode,you can setup any parameter you
want.Use the or button to select any option you want to setup.Then press ENTER button
to confirm the parameter.
AT 28.6°C RH 61.2%
DP 20.3°C WB 22.9°C
13ppm
DIF 0.22 AVG 0.03
MIN 0.00 MAX 0.22
Video Borescope User Manual
Particle Counter User Manual
14
www.eastern-energy.com

Start Delay
Set the waiting time before the start of measurement.Press ENTER button to select the time and
adijust the time with the or button.
CO Alarm
Set the alarm value of CO. Optional alarm off and turn the alarm function.You can set the size of
the alarm parameters.
Video Borescope User Manual
Particle Counter User Manual
15
Eastern Energy Co., Ltd.
40/4 Vitoondumri Rd., Banbueng
Banbueng, Chonburi, Thailand
Tel: [phone]
7
[email protected].th
www.eastern-energy.com
www.eastern-energy.com

Max/Min
Set whether to display the measured maximum,minimum.
Average/Dif
Set whether to display the value of average or different.
Ambient Temp/%RH
Set whether to display the air temperature and relative humidity.
Dewpoint/Wetbulb
Set whether to display the dewpoint and wetbulb.
10.Strorage File Browser
Turn the instrument on,below the LCD has a bar icon. Click on the
icon to enter the data memory via the F1 button.on the Memory set mode,there are three options,
press or button to select one and press ENTER button to enter this option.and then you
can view the recorded data,images,and video information.If you do not save the information,it
shows no file.
Video Borescope User Manual
Particle Counter User Manual
16
Eastern Energy Co., Ltd.
40/4 Vitoondumri Rd., Banbueng
Banbueng, Chonburi, Thailand
Tel: [phone]
7
[email protected].th
www.eastern-energy.com
www.eastern-energy.com

Press the or button to select the items,Then press the ENTER button to enter
11.1 Date/Time
Press the or button to select the value,press ENTER
button to set the next value,press ESC button to exit and save the date and time.
11.System Settings
Turn the instrument on,below the LCD has a bar icon.Click on the icon to
enter the System Set Mode via the F2 button.
Items
Date/Time
Font Colour
Language
Brightness
Auto Power Off
Display Timeout
Memory Status
Factory Setting
Units(°C/°F )
Descriptions
Set date and time
Select the font colour
Select Language
Brightness adjustment
Select auto power off time
Select display auto off time
Display the memory and MicroSD card capacity
Restore factory settings
Select the temperature unit
Video Borescope User Manual
Particle Counter User Manual
17
www.eastern-energy.com

11.2 Font Colour
Press the and button to select the color, press the ESC button to esc and save.
11.3 Language
Press the and button to select language, press the ESC button to esc and save.
11.4 Brightness
Press the and button to select the backlight brightness, press the ESC button to esc and
save.
11.5 Auto Power off
Press the and button to select the auto power off time or never auto power off, press the
ESC button to esc and save.
Video Borescope User Manual
Particle Counter User Manual
18
www.eastern-energy.com

11.6 Display Timeout
Press the and button to select the Display auto off time or never Display auto off, press the
ESC button to esc and save.
11.7 Memory Status
Press the and button to select the memory (flash or microSD). Press the ESC button to
esc and save.
NOTE: If MicroSD card inserted, MicroSD card will be selected by default
Press the ENTER button to format the flash or MicroSD card, press F3 button to cancel format,
press F1 button to confirm format.
Video Borescope User Manual
Particle Counter User Manual
19
Eastern Energy Co., Ltd.
40/4 Vitoondumri Rd., Banbueng
Banbueng, Chonburi, Thailand
Tel: [phone]
7
[email protected].th
www.eastern-energy.com
www.eastern-energy.com

11.9 Units(°C/°F )
Press the and button to select the unit, press the ESC button to esc and save.
12.Help File
This is 4 in 1 Particle Counter with 2.8" color TFT LCD display & a microSD memory card for
capturing imags(JPEG) or video(3GP)for viewing on your PC.Proving fast,easy and accurate
readings for particle counter,GAS(HCHO,CO) detectors,air temperature & relative humidity,most
surface temperature measurements,It is the first combination of these measurements in gloaal,
would be the best instrument for environment protection and energy save.The dewpoint temperature
measurement will be very visiable for wet and dry proof.It is a good hand industrial measurements
and data analyzing,Any memory readings can be recorded in SD card.The user can be back in
offce to analyze the measured air quality under the support of software.
12.1 Particle Counter instruction
1.Particles that scattered in the dust in the air,dust or smoke.They mainly come from automobile
exhaust,power plant,garbage incineration furnace and so on.Relative diameter less than 2.5um
particles known as PM2.5,this particle is smaller than human cells,not be drained,but directly into
the lungs and blood,the harm to human body is larger.
2.This meter with a simple key operation to achieve a particle counter measurement, real-time
monitoring the value of environmental particles concentration, six channel data measured
simultaneously,and at the same time displayed on the screen, also can be a separate display.Joined
the exceed the standard grade alarm indication,and accompanied by different buzzer,more direct
master of environmental quality.
3.Equipped with cameras and photographic function,can directly see
measured the real situation, can store large amounts of data ( SD), pictures and video, is used
to analyze the data
11.8 Factory Setting
Press the and button to select yes or no restore factory settings. Press the ESC button to
esc and save.
Video Borescope User Manual
Particle Counter User Manual
20
www.eastern-energy.com

4. Due to particulate matter measurements need to start the pump, will be dust inhalation, is
recommended for daily use less as far as possible, to reduce the pollution on the sensor, thereby
increasing the service life of the instrument, such as the average daily use 5 times, the instrument
can be used for 5 years.
Attention: in the foggy there will be fine mist as dust!
12.2 HCHO introduction (only DT-9881)
1.This test is mainly used for indoor air quality testing, formaldehyde is who identified as
carcinogenic and teratogenic substance, the indoor formaldehyde content of not more than 0.1ppm,
ppm is one in a million.
2.Formaldehyde and VOC mainly in paint, glue, and agents, may also exist in the chemicals, there
may exist in the fresh food such as anti season vegetable & fruit, vegetable & fruit in different.
3.This meter is the use of advanced sensor technology, real time detection of formaldehyde in the
air, can promptly and effectively prevent formaldehyde harm to human body.
12.3 CO introduction (only DT-9881)
1.This detector can detect the concentration of CO in air, and can accurately test the 1-1000ppm
concentration values, CO is a toxic gas, mainly comes from the old stove, gas heaters, fireplaces,
fuel and exhaust device etc.
2.The harm of CO to human body can be expressed in the following form
Video Borescope User Manual
Particle Counter User Manual
21
Eastern Energy Co., Ltd.
40/4 Vitoondumri Rd., Banbueng
Banbueng, Chonburi, Thailand
Tel: [phone]
7
[email protected].th
www.eastern-energy.com
www.eastern-energy.com