Most of the results of the interviews in the market today show that prices are still a key factor in consumers' refusal to use LEDs and compact fluorescent lamps. The LED is priced from $25 to $60 and the CFL is priced from $1.25 to $18. If the highest grade (most expensive) LED lamp is used, consumers can save $130 in energy costs in 23 years, and 60 watts of compact fluorescent lamps can save consumers $60 in the same period. However, LEDinside pointed out that the price range of LED products investigated in this type of investigation is high. If the calculation is based on the sweet spot of less than $10, LED can save a lot of energy costs, and it will be more cost-effective than CFL. benefit.
Most of the consumers stated that unless the price of the two lamps dropped, the willingness to change would still be low. In 2011, the price of LED fell by 20%, and it is expected that the price will still fall by 10 US dollars in the next two to three years.
The current US market sales of the first LED luminaires include the EcoSmart ($26) A19 and Philips ($25) environmental lights due to light brightness and light adjustment capabilities and light color with white flag bulbs and halogen bulbs Similar, so it is suitable to replace the 60-watt traditional light bulb.
Of course not every type of LED bulb has good lighting quality. Consumer reports have found that some poor quality LED bulbs have unstable lighting and often dim light, such as the $20 MiraclELED. Consumers are advised to choose LED products that contain energy labels to avoid buying inferior products.
In fact, some LED light bulb products have dimmed and uneven light and unusual lighting color. These are the main factors that consumers feel disappointed with light bulbs. Most of these products are produced in China and are marked by traders and agents. Specific brand name sales.
Normally, a 60-watt LED bulb requires at least 800lm of lumens to achieve the lighting brightness standard. The color of lighting should be at least 2000K, 3000K can be as white as a halogen lamp, and 5000 to 6000K can be more blue. The label outside the luminaire package will be accompanied by these detailed information. The US DOE also has regulations to require the manufacturer to do a good job of marking these basic specifications and help consumers purchase LED light bulbs.
Pressure Type Liquid Level Sensor
It is suitable for liquid level measurement of various media in petrochemical, metallurgy, electric power, pharmaceutical, water supply and drainage, environmental protection and other systems and industries. The exquisite structure, simple adjustment and flexible installation provide convenience for users to use easily. Standard signal output modes such as 4 ~ 20mA, 0 ~ 5V and 0 ~ 10mA are optional by the user according to needs. Using the principle of hydrostatics to measure liquid level is an important application of pressure sensor. The special cable with ventilation duct in the middle and special sealing technology are adopted, which not only ensures the water tightness of the sensor, but also connects the reference pressure chamber with the ambient pressure, so as to ensure the high precision and high stability of the measurement.
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