| 摘要 |
An analyzer of burning gases has lower supply block, electronic circuit for information processing, indicators of low and high concentrations of methane, blocks for light and sound signaling, knobs for switch-on and setting modes of operation of analyzer. There are included indicator of burning gases that has connected in sequence working and compensation sensitive elements, in parallel to those connected in sequence ballast resistors of bridge measuring circuit are connected, at that two first ballast resistors and working and compensation sensitive elements form thermo-catalytic indicator of low concentrations of methane, its output is connected to the first input of electronic circuit of information processing, to its other input compensation sensitive element is connected, this is used as indicator of high concentrations of methane. To the third inputs of electronic circuit other ballast resistors of bridge measuring circuit of burning gas indicator are connected. To the fourth and the fifth inputs of electronic circuit knobs for switch-on and setting modes of operations, respectively are connected, and to outputs of electronic circuit blocks of digital indication, sound and light signaling are connected, and, if needed, block for disconnection of object protected and block for data transfer. The analyzer provides increase of reliability of gas protection.
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