| 摘要 |
A cost effective manometer is realized for accurately measuring back pressure in all types of vents and ducts. Common back pressure can be caused by restrictions, such as lint or soot buildup. The manometer consists of a main body having two reservoirs for storage of measuring fluid. The first reservoir contains measuring fluid during transit eliminating the need for end user to manually fill manometer prior to first use. Measuring fluid is transferred to second main reservoir prior to initial use. The second reservoir contains an adjustable bladder or plunger for obtaining a zero reading prior to measurement. The manometer can be used on all types of vents and ducts where positive or negative pressure exists. The manometer can be used for measuring positive or negative pressures as well as differential pressures. |
