自记毛发湿度计,是一种已被档案管理部门广泛采用了的空气湿度测量仪器。它的基本功能,是能自动监测并记录室内外空气湿度在每一时刻的变化情况。如果我们在它上面加装一个简易电子音频振荡器,就可增加湿度计用声音自动预警不适宜空气湿度的功能,以利档案库房管理人员及时地采取各种相应的空气湿度调节措施,方便档案库房的管理。 Self-record hair hygrometer, is a kind of air humidity measuring instrument that has been widely adopted by the file management department. Its basic function is to automatically monitor and record the indoor and outdoor air humidity at every moment of change. If we install a simple electronic audio oscillator above it, you can increase the hygrometer with the sound of automatic warning of unfavorable air humidity function, to facilitate the archives manager to take timely and appropriate air humidity adjustment measures to facilitate the file Treasury management.