Non-woven plaster on the back wall of the greenhouse is resistant to rain and sunlight
Industrial
Laser Distance Sensor, we also call it secondary development laser distance
module, which support TTL level and CMOS. The laser range sensor can be widely
used in professional surveying, mapping, construction, robots, hunting arrows,
industrial monitoring and automated measurement applications in electricity,
transportation, etc. Our laser distance module supports data communication with
RS232, USB with a simple adapter. The results of laser distance sensor can be
evaluated with Arduino. We are always looking ahead, hoping we can make every
measurement simple in life!
Parameters
of M703A:
Accuracy
±1
mm (0.04 inch)
Measuring
Unit
meter/inch/feet
Measuring
Range (without Reflection)
0.03-150m
Measuring
Time
0.1~3
seconds
Laser
Class
Class
II
Laser
Type
635nm,
<1mW
Size
72*40*18mm
(±1 mm)
Weight
About
21g
Voltage
DC2.0~3.3V
Electrical
Level
TTL/CMOS
Frequency
10Hz
Operating
Temperature
0-40 ℃ (32-104 ℉ )
Storage
Temperature
-25~60 ℃ (-13~140 ℉)
Industrial Laser Distance Sensor Laser Distance RS232,Arduino Distance Module,Laser Module RS232 Chengdu JRT Meter Technology Co., Ltd , https://www.cdtoflidarsensor.com
The vegetable farmer Yin Yin of Tianliu Township, Shouguang City told the reporter: “Spraying a layer of cement slurry on the non-woven fabric on the back slope of the greenhouse can serve to enhance the anti-rain effect of the non-woven fabric and extend its service life.†Master Yin According to the introduction, the application of cement paste to non-woven fabrics allows the cement slurry to penetrate into the fine holes of the non-woven fabric. When it is dried, it can be connected into pieces to enhance the ability of non-woven fabrics to resist rainwater erosion, and the dried cement will also be A protective layer is formed on the surface of the non-woven fabric to enhance the ability of the non-woven fabric to resist sunlight.
However, when pouring cement paste onto the nonwoven, some vegetable farmers reported that the use effect was better, and some vegetable farmers reported that after pouring the cement slurry onto the non-woven fabric, the cement only formed some small cement blocks on the surface of the non-woven fabric. Can not be connected into pieces, the use of the effect is not obvious, and this is caused by the fact that the time caused by vegetable farmers splashing the slurry is not appropriate.
When pouring cement slurry onto a non-woven fabric, it cannot be used when the temperature is high on sunny days. When the temperature is high, moisture in the cement slurry will quickly evaporate, so that cement cannot be connected to the surface of the non-woven fabric, and the solidification strength of the cement Greatly reduced, the use of poor results. However, on cloudy days or in the sunny afternoon, when the sun goes down, the temperature is low, and when the water evaporation rate is small, the moisture in the cement slurry evaporates slowly, so that the cement slurry has enough time to penetrate into the pores of the non-woven fabric and is connected to Tablets, improve the solidification strength of cement, better use.
