A few days ago, the Hangzhou Enterprise Confederation and the Hangzhou Entrepreneurs Association jointly unveiled the list of the top 100 companies in Hangzhou in 2009. China National Heavy Duty Truck Group Hangzhou Engine Co., Ltd. is once again on the list. In 2009, the ranking of top 100 companies in Hangzhou ranked the company's sales revenue (or operating income) in 2008 as the main economic indicators, ranking them from high to low, and referring to the net profits, total assets, owners’ equity, and comprehensive energy consumption of each company. The total amount of tax, R&D expenses, and number of employees are composed of the top 90 industrial companies and the top 10 companies in the ranking of commercial enterprises. These enterprises are the backbone of the local economic construction in Hangzhou, and they are also outstanding enterprises that have made outstanding contributions to the growth of Hangzhou's industrial security and against the global financial crisis. Low-temperature 1-color Pyrometer
This classification includes one color infrared pyrometers measuring range is 250℃-2200℃. The one color pyrometers currently on market are mostly narrow-band pyrometers. Its principle of temperature measurement is to determine the temperature by detecting the radiant energy that occurs in a narrow wavelength range of an object. The temperature a pyrometer measured is the average temperature in an area, and the measuring result is affected by emissivity, lens contamination and background radiation.
To use 1-color pyrometer mode, the measured area of the object should be large (it can fully fill the target field of view) , object surface should be relatively flat (not curved), measurement direction should less than 30 degrees, and the physical and chemical state of the measured object surface should be stable (not in the process of oxidation, gasification or liquefaction) , the optical channel should with less dust and without blocking and attenuation.
1-color pyrometer, monochromatic infrared pyrometer, one color pyrometer, one-color infrared pyrometer Changzhou Sijie Optoelectronics Technology Co.,Ltd. , https://www.sjinfrared.com
China National Heavy Duty Truck Company Re-enters Hangzhou Top 100 List