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He aha nā pono nui o nā mika kahe ultrasonic?
1). Hoʻokomo pūnaewele a me ka hoʻopili wela, ʻaʻohe ʻoki paipu a hoʻopau paha i ka hana. 2). He maʻalahi ke kau ʻana i nā mea ʻike clamp-on, hiki ke hoʻokomo ʻia ma ke kaomi paipu kiʻekiʻe. 3). ʻAʻole pili pono ka clamp ma ka sensor flowmeter me ke ana ʻana. Hiki iā ia ke ana i nā ʻano kamaʻilio āpau...E heluhelu hou aku