23.Maintenance
Use wet cloth or liquid soap to clean the shell. Do not use abrasive
compound or isopropyl alcohol or solvent to clean the shell or lens
or window.
21. Emissivity
For the emissivity within the step length of 0.01, it can be adjusted
from 0.10 to 1.00. Set the default value to 0.95. The accurate value
of emissivity is very important to the accurate measurement of
temperature. The surface emissivity has great impact on the
measured temperature of our product. To know the emissivity of the
measured surface helps to get more accurate result of temperature
but this is not always true.
18.Image Capture and Storage
This product can be stored for up to 25,000 images on the micro SD
card. Press image capturing button and the symbol of “store photos
yes no” will display on the screen. Press “MENU” key to store
image.Press “SELECT” key to delete the captured image. If “NO
SD”displayed at the lower left corner of screen, it indicates SD card
is not installed. If “FULL” is displayed at the lower left corner of
screen, it indicates that SD card is full.
19. Check internal storage
1. Press “menu” key to enter into the mode of “menu”.
2. Select the image storage module using the arrow keys.
3. Press the “SELECT“ button to select the picture you want to view.
4. Press the arrow keys to view other pictures.
5. Press the SELECT button to view pictures.
6. Press the above key on the screen will display "Delet photo yes
no", then press the MENU key to delete the picture,Press
"SELECT" to cancel.
7.Press the MENU button to exit Review.
20. Notes
All the objects have the radiated infrared energy. The radiated
quantity of infrared energy is based on the actual temperature and
radiation coefficient of surface. Our instrument can sense the
infrared energy on the surface of object and estimate the
temperature based on the sensed value of infrared energy. Many
objects (e.g. coated metal, wood, water, skin and texture) can
radiate energy, so it is easy to get the accurate measured value. As
to the surface which is easy to radiate energy (high radiation
coefficient), the radiation coefficient is greater than 90% (0.90).
This simple method is not applicable to the glossy surface or coated
metal because their radiation coefficient is less than 6% (0.06).
These materials are not easy to radiate energy so they are
classified as the low radiation coefficient materials. To accurately
measure the low radiation coefficient materials, calibrate the
radiation coefficient. Adjustment of radiation coefficient is to make
the product more accurately calculate the estimated value of actual
temperature.
22.Emissivity of normal materials
Materials Thermal radiation Materials
Thermal radiation
Asphalt
0.90~0.98
Black cloth
0.98
Concrete 0.94
Human skin
0.98
Cement 0.96
Bubble
0.75~0.80
Sand
0.90
Charcoal dust 0.96
Soil 0.92~0.96 Paint
0.80~0.95
Water
0.92~0.96
Matt paint
0.97
Ice
0.96~0.98
Black rubber
0.94
Snow 0.83
Plastic
0.85~0.95
Glass 0.90~0.95
Wood
0.90
Ceramic 0.90~0.94
Paper
0.70~0.94
Marble
0.94
Chromic oxide 0.81
Gypsum 0.80~0.90
Copper oxide 0.78
Mortar
0.89~0.91
Ferric oxide
0.78~0.82
Brick 0.93~0.96 Texture 0.90
10
11
Aluminum
0.
30
Iron Oxides
0.
78~0.82
Carbon
0.
85
Lead
0.
5
0
