Q: After the greenhouses have been planted with water, the color of the soil becomes green. What causes this?
A: The situation you mentioned is rare. If only the surface turns green, it may be that moss grows in high temperature and high humidity conditions. Summer wetlands are common and needless to worry about. If it is under the surface also turns green, it is speculated that greenhouse soil acidification heavier, and the frequent use of iron-containing micro-fertilizer caused by iron enrichment, in the soil watering, under the conditions of iron reduced to a bivalent green. In this case, lime, alkaline soil conditioners, and decomposed organic fertilizers should be properly used to regulate soil physical and chemical properties.
New product of U85 micro laser distance sensors use highly focused class 2 laser to detect objects or measure distances, and can return a measured value via varieties intface( serial, usb, rs232, rs485, bluetooth etc.). The electronic distance sensor is a very small Laser Distance Sensor, but high resolution up to 1mm and long distance measuring sensor - teachable measuring range of up to 30m. Extremely accurate distance sensing sensors, errors down to ± 1mm. And the mini sensors and measurements support continuous measurement function, great for compact solutions(eg: robots) with the smallest Laser Distance Sensor of the world!
Parameters of U85:
Accuracy
±1 mm (0.04 inch)
Measuring Unit
mm
Measuring Range (without Reflection)
0.03-20m/0.03-30m
Measuring Time
0.1~3 seconds
Laser Class
Class II
Laser Type
620nm-690nm, <1mW
Size
41*17*7mm (±1 mm)
Weight
About 4g
Voltage
DC2.0~3.3V
Electrical Level
TTL/CMOS
Certifications
CE, FCC, RoHS, FDA
Operating Temperature
0-40 ℃ (32-104 ℉ )
Storage Temperature
-25~60 ℃ (-13~140 ℉)
Mini Laser Distance Sensor,Optical Laser Distance Sensor,Smallest Laser Range Sonsor,Laser Measuring Sensor
Chengdu JRT Meter Technology Co., Ltd , https://www.jrt-measure.com