On March 10th, according to Japanese media reports, the Japanese market research agency Japan Fuji Economics (Headquarters: Tokyo) announced the summary of the survey results of the light source and lighting products market. The results show that the total sales of the light source market in 2009 was 392.52 billion yen. Among them, the bulbs account for about 80%, the LEDs account for about 15%, and the semiconductor lasers account for about 5%. Lamp bulbs are broadly classified into visible light bulbs and special light bulbs (including infrared light bulbs and ultraviolet light bulbs), which are 96% of visible light in a light bulb. 78% of such visible light bulbs are general lighting products (sales of 238 billion yen), so the development trend of general lighting products will have a great impact on the entire market.
In the market for visible light bulbs for general lighting, the market for fluorescent lamps and LED tubes that replace cheap incandescent lamps is expanding. Although the increase in lamp life has made it worrying about the replacement demand, the market is expected to grow in the short to medium term due to the increase in demand for high-priced LEDs. Especially in the LED market, the LED lighting of liquid crystal backlights and general lighting products is rapidly advancing, and these two fields have driven the overall growth of the LED market.
From the perspective of the Japanese market alone, the lighting equipment market will shrink due to the reduction in new construction starts due to the economic downturn in 2009. However, as far as LED lighting products are concerned, the market scope is expanding due to the increase in LED lighting manufacturers and the expansion of product varieties. The Fuji economy predicts that the proportion of new-generation lighting products such as LED lighting products and organic EL lighting equipment in the market will increase from 5% in 2009 to 23% in 2015.
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The model of explosion-proof temperature sensor is wzpk-22i-b, which is made of stainless steel and has explosion-proof performance. If you want to conduct reliable temperature measurement, you first need to select the correct temperature instrument, that is, the temperature sensor. Thermocouple, thermistor, platinum resistance (RTD) and temperature IC are the most commonly used temperature sensors in testing.
The changes of physical parameters with temperature include expansion, resistance, capacitance, electromotive force, magnetic properties, frequency, optical characteristics, thermal noise and so on. With the development of production, new temperature sensors will continue to emerge.
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