Q1 Yam tsawg kawg nkaus ntws
Q2 Transitional flow rate
Q3 Permanent flow rate (ua haujlwm txaus)
Q4 Overload flow rate
Xyuas kom tseeb tias qhov siab tshaj plaws uas yuav dhau los ntawm lub 'meter' tsis dhau Q3.
Feem ntau cov ntsuas dej muaj qhov tsawg kawg nkaus (Q1), hauv qab no uas lawv tsis tuaj yeem muab kev nyeem ntawv raug.
Yog tias koj xaiv lub 'meter' loj, koj tuaj yeem poob qhov tseeb ntawm qhov qis kawg ntawm qhov ntws.
Meters uas txuas ntxiv ua haujlwm ntawm qhov ntau dhau ntawm cov dej ntws (Q4) muaj lub neej luv dua thiab tsis raug.
Ntsuas koj lub meter kom haum rau qhov ntws koj xav ntsuas.
Qhov ratio R
Qhov kev ua haujlwm metrological tau txhais los ntawm qhov piv txwv (Tus nqi no yog qhov kev sib raug zoo ntawm Kev Ua Haujlwm Flow / Yam tsawg kawg nkaus ntws).
Qhov siab dua qhov "R" Ratio, qhov rhiab heev lub meter muaj rau kev ntsuas qhov qis qis.
Tus qauv tus nqi ntawm R piv rau hauv dej ntsuas yog cov hauv qab no *:
- R40, R50, R63, R80, R100, R125, R160, R200, R250, R315, R400, R500, R630, R800, R1000.
(* Cov npe no tuaj yeem txuas ntxiv rau hauv qee qhov serials. Nco ntsoov tias qhov no nomenclature hloov cov qub metrological chav A, B, thiab C)
Thiab nco ntsoov tias ib lub 'meter' yuav tsuas yog qhov tseeb yog tias ib puag ncig ib puag ncig ua tau raws li tag nrho cov chaw tsim khoom tsim cov kev xav tau ntawm cov dej ntws, kev teeb tsa, qhov kub thiab txias, ntws ntau, kev co thiab lwm yam.
Lanry Instruments Ultrasonic water meter Ultrawater (DN50-DN300) serials Turndown ratio R yog 500;SC7 serials (DN15-40) Turndown ratio R yog 250;SC7 serials (DN50-600) Turndown ratio R yog 400.
Post lub sij hawm: Oct-14-2021