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• 2018-12-05 16:46發(fā)布了問答

  我安裝圍墻紅外對射探測器怎么沒有報警

  　

  387人看過

• 2017-09-26 00:25發(fā)布了問答

  紅外線檢測應(yīng)用在高壓管道施工中的哪個環(huán)節(jié)

  　

  328人看過

• 2016-12-13 05:15發(fā)布了問答

  金立手機紅外怎么打開

  　

  271人看過

• 2016-06-22 06:07發(fā)布了問答

  框架梁支撐鋼管上有釘子眼對梁有影響嗎有影響嗎

  框架梁支撐鋼管上有釘子眼對梁有影響嗎有影響嗎... 框架梁支撐鋼管上有釘子眼對梁有影響嗎有影響嗎 展開

  322人看過

• 2016-05-10 22:12發(fā)布了問答

  電信渠道支撐具體是做什么的？

  如題。。... 如題。。 展開

  346人看過

• 2015-08-16 09:24發(fā)布了問答

  英語翻譯

  UNIPHOS-400 multiparameter UV/IR based Fire Detector detects fire by detecting simultaneously three important characteristics of fire viz. UV radiation in the solar blind region of 185-260 nm， IR emission from the hot CO2 which invariab... UNIPHOS-400 multiparameter UV/IR based Fire Detector detects fire by detecting simultaneously three important characteristics of fire viz. UV radiation in the solar blind region of 185-260 nm， IR emission from the hot CO2 which invariably is present in and around a fire and the continuum black body IR radiation from the fire. This microprocessor based detector is housed in a flameproof enclosure with a viewing window. It is mounted on a wall mountable stand with provision to adjust the field of view to bring the viewing window in line of sight of the likely spot where fire can occur. The detector gives a fire alarm (red led glows) when all the three chosen fire parameters are detected. Simultaneously a relay output is available. When any one of IR or UV radiation is detected yellow led glows to give a warn alarm and also a relay output is available. The detector also provides an analog 4-20mA output and a RS485 digital output to indicate the above events. 展開

  444人看過

• 2013-02-05 19:59發(fā)布了問答

  為什么紅外探測器會經(jīng)常莫明其妙的報警？

  　

  427人看過

• 2011-06-04 06:32發(fā)布了問答

  紅外生命探測儀工作的原理正確的是什么

  　

  813人看過