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采用常规的皮托管—压差计法测定通风系统,不仅工作量大,而且很难在通风条件保持不变的情况下,完成一个完整的通风系统的测定。为此,西北工业大学与武汉冶金安全技术研究研共同研制了XW-1型矿用负压计。 XW-1型矿用负压计,主要由静电传感器,交流电压发生器、电压放大器、晶体管毫伏表及电压记忆电路等部分组成。它是以干电池作电源的便携式仪器。实验室和现场试验表明,该负压计解决了从绝对值很大的大气压力数值中精确地显
Using conventional pitot tube - differential pressure method to determine the ventilation system, not only the workload, but also difficult to maintain the same ventilation conditions, to complete a complete ventilation system determination. To this end, Northwestern Polytechnical University and Wuhan Metallurgical Safety Research jointly developed XW-1 mining negative pressure gauge. XW-1 mining vacuum gauge, mainly by the electrostatic sensor, AC voltage generator, voltage amplifier, transistor millivoltmeter and voltage memory circuit and other components. It is a portable instrument powered by dry batteries. Laboratory and field tests show that the negative pressure gauge solved the absolute value of the barometric pressure values accurately