PROTMEX PTH-4 User manual

CARBON DIOXIDE
MONITOR
PTH USER MANUAL
PROTMEX
Please read this manual carefully before using the product and keep it properly
Thank you for purchasing the carbon dioxide monitor PTH-4/PTH-5! This product
uses a carbon dioxide sensor based on the principle of non-dispersive infrared
absorption, which can accurately measure the concentration of carbon dioxide in the
air with a concentration range of 0 ppm to 5000 ppm. Long-term inhalation of high
concentration of carbon dioxide by the human body can easily induce hypoxic
suffocation . This product can keep you away from these troubles. It is suitable for
cars, baby rooms, homes, Offices and other densely staffed occasions, it is also
suitable for greenhouses, breeding farms, etc.
Specification
1)Using non-dispersive infrared technology (NDIR), full-scale temperature range
correction;
2) Various air quality warning forms such as indicator lights and facial comfort
expressions;
3) The screen backlight will automatically turn off in 10 minutes and wake up with
one key;
4) Large-capacity 18650 lithium battery, long battery life;
5) Support USB charging method;
6)There is a bracket stand on the back of this product, which is convenient to place
on a flat surface for continuous monitoring
Packing List
Please check the accessories list of the instrument you purchased according to
different models.
1. PTH host × 1 2. 18650 lithium battery × 1 (built-in) 3. user manual × 1
4. USB cable × 1 5. Product certificate ×1
Special statement: The illustrations of the products, accessories and user interface
in the manual are all schematic diagrams and are for reference only. If there is a
difference between the actual product and the schematic diagram due to product
updates and upgrades, please refer to the actual product received and the
manufacturer will not notify you separately.
1.ProductIntroduction
Indicator light
Screen
Temperature and humidity
(only for PTH-5)
Front
Vent
Side
USB Charging Port
Table Bracket
A Button
B Button
Back
2.Charging
When charging with the Micro USB that comes with the instrument，please use a
power adapter with a specification of 5V 1A". When using a third-party USB cable,
please be careful not to exceed 1m in length to prevent excessive voltage drop from
being unable to recharge. Please use qualified chargers and chargers,not
non-standard power adapters.In general, the battery is fully charged and takes
about 4 to 6 hours.(This data is for reference only, the actual time will be affected by
various factors and vary) .The following is a comparison table of the changes in the
battery charge icon displayed on the screen and the charging status.
LCD Status
Icon displays Full
Icon flicker Charging
Icon flicker Low power
3.Measuring
Press A button, the instrument starts to work, the screen will display Carbon dioxide
levels and comfort expressions.
Product Operation Instruction

4.Button
Button Operation PTH-4 PTH-5
A
B
A+B
Long
Short
Long
Short
Press at the
same time
Power on / off Power on / off
Switching temperature
units between ℃&℉
Switching
Backlight mode
Switching
Backlight mode
Backlighton-off Backlighton-off
Put it in a ventilated place to
perform manual calibration data,
Automatic calibration is
completed after 200 seconds
countdown
Put it in a ventilated place to
perform manual calibration data,
Automatic calibration is
completed after 200 seconds
countdown
Description:
In the state of the information screen, the indicator light is the breath gradient effect,
the user can wake up the backlight by pressing any key. After each awakening, if
there is no keystroke operation, the product will automatically turn off the backlight
of the screen after 10 minutes, but the indicator light still indicates the current air
quality.
If you need to switch the backlight mode, you can press the B key for a long time.
The backligh mode can be the constant light mode or auto turn off the backlight
mode after 10 minutes.
5.Alert
Whether the Carbon dioxide value exceeds the standard is indicated by the
expression icon and indicator light, as shown in the following table:
Bad Normal Good
When the measured value is between 0-700ppm, the Carbon dioxide value belongs
to the safe range;
When the measured value is between 700-1500 ppm, the Carbon dioxide value
belongs to the warning range and needs close observation;
When the measured value exceeds 1500ppm, the Carbon dioxide value exceeds
the standard and must be open the window for ventilation.
You can also directly judge whether the formaldehyde value exceeds the standard
through the indicator light. The following is the comparison table of indicator light
color and its meaning:
Light Meaning
Green Good
Yellow Normal
Red Bad
6.Specifications
The following table provides the specifications of the measurement parameters
Specification PTH- 4 PTH- 5
/
Temperature Range
Humidity Range
Carbon dioxide value
Power Supply
Indicator light
Input
Size
Resolution：1 ppm；
Range：0 ~ 5000 ppm
18650 lithium battery /
2400 m Ah
√ √
DC 5 V 1 A DC 5 V 1 A
83 × 83 × 32 mm 83 × 83 × 32 mm
-10~40°C(±1°C)
20%-80%(±5%RH)
Resolution：1 ppm；
Range：0 ~ 5000 ppm
18650 lithium battery /
2400 m Ah
/
/
Notice
1)This product should not be dipped in water, nor should it be placed in a high
temperature environment exceeding 60℃.
2)This product belongs to precision measuring instrument and shall not be
dismantled without authorization.
3)It can not be measured in the environment of organic gas with too high
concentration for a long time.
4）Built-in lithium battery, when measuring the air quality in the car, please do not
put the carbon dioxide monitor with lithium battery in the sun;