目前,国内外的许多生产厂,直接在上用汞灯测试波长准确度。具体作法是:将仪器的光源拆下,用标准灯代替原光源来测试标准光源灯的各条特征谱线,各条特征谱线的测量值与理论值之差,就是波长准确度。例如,使用汞灯测试,则设置波段范围为245～560nm,光谱带宽为2nm,测量方式设兰置为能量测量;样品为空气(样品和参考均为...
Without an air conditioner, you could be in for a long, hot, sticky summer. Here are the best ones to help you keep your cool.
Date Of Publication:2024-12-09 Click-Through Rate: 间接法(或叫相对法)测试波长准确度
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Support plug and convenient for wiring and maintenance; I/O terminals with different functions select the design with different colors so as to reduce the probability of error wiring of users greatly; and it is easy to use, beautiful an...
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Install an emergency stop circuit Turn off the power and wait for a externally so that you can stop longer time than the specified the operation and shut off the time, before transporting, wiring power immediately. and inspecting the driver. Failure to observe this instruction could Failure to ...
Product name:Variable-frequency motor fan;Application:1.1KW motor;Color:Red frame Black leaves;Type:Axial Flow Fan;Model:CFG-80A;Electric Current Type::AC;Rated voltage:380V;Mount Type:mounting screw;Frame Material:Cast Iron;Blade material:Copper coil mo
Wiring can become old, frayed and dangerous to operate. Also, electric controls to your thermostat can affect its operation. The most prevalent signs of trouble are: View Article How Often to Change Your Thermostat Batt... Typically, most manufacturers will suggest you put in new batteries for...