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AYJ-1型瓦斯遥测仪是重庆煤矿安全仪器厂生产的5路瓦斯遥测仪。该仪器的井下主机利用载体催化原理将被测地区风流瓦斯含量变换成与之成正比的直流毫伏信号(最高为80～100mV),然后经过电路处理,以载波频分制方式,将井下5个不同地点的风流瓦斯信号用电话线(或专线)传输至井上。传输载波频率分别为17、20.5、25、30、36kHz。信号传至井上后,由接收机的选频网路将各路信号分开、放大和解调后显示出对应各地点的瓦斯值,并在超限后发出音响、灯光报警信号。
AYJ-1-type gas telemetry instrument is produced by Chongqing Coal Mine Safety Instrument 5-way gas telemetry. The downhole host of the instrument uses carrier catalytic principle to convert the gas content of the measured wind into a direct current millivolt signal (up to 80 ~ 100mV), and then through circuit processing, the carrier frequency-division system will be downhole 5 Ventilation gas signals from different locations are transmitted to wells using telephone lines (or dedicated lines). Transmission carrier frequencies were 17,20.5,25,30,36kHz. After the signal is transmitted to the well, the signals of each channel are separated by the frequency-selective network of the receiver, and the gas values corresponding to the points are displayed after amplification and demodulation. After the limit is exceeded, acoustic and light alarm signals are emitted.