He aha ka pololei o nā mika kahe o Lanry?

No ke ana kahe ana volumetric,

ʻO ka pololei o ka transit time ultrasonic liquid flow meter a hiki i ka 1%.(Pipu piha piha i ka wai maʻemaʻe a me ka wai lepo liʻiliʻi)

ʻO ka pololei o ka clamp-on dual channel transit-time ultrasonic liquid flow meter a hiki i ka 0.5%.(Hoʻopiha piha i ka paipu i ka wai maʻemaʻe a me nā wai lepo liʻiliʻi)

ʻO ka pololei o Doppler ultrasonic sege flow mika he 0.5% ~ 2.5% FS ( Piha piha piha i ka wai ʻōpala / wai / wai me nā ʻōpū ea)

ʻO ka pololei o ka Area Velocity Ultrasonic kahe mika he 1%.(ʻAʻole i piha i ka paipu a i ʻole ka hoʻohana ʻana i ke kahawai wehe i ka wai ʻino, kahawai, kahawai, wai maʻemaʻe)

ʻO ka pololei o Inline type Ultrasonic water meter ka papa 1 a i ʻole Papa 2 (Tube i ka wai maʻemaʻe)