Ubunyangamugayo bw'ibipimo by'ubushyuhe bya clamp-on ultrasonic ni ingenzi cyane mu gukoresha ibipimo mu nganda, kandi biterwa n'ibintu byinshi—harimo igishushanyo mbonera, imiterere y'aho bishyirwa, imiterere y'amazi, n'uko bikurikiza amabwiriza. Iyo ibi bipimo byatoranijwe neza, bigashyirwaho, kandi bigafatwa neza, bishobora kugera ku rwego rwo hejuru rw'ubunyangamugayo bukwiriye mu kwishyura, kugenzura ibikorwa, no gucunga ingufu. Hasi hari isesengura rirambuye:
1. Amahame n'Isuzuma ry'Ubuziranenge
Ibipimo by'ubushyuhe bya ultrasonic bipima ubushyuhe bizwi nka "clamp-on ultrasonic" bikunze kwemezwa n'amahame mpuzamahanga agena ibyiciro by'ubuziranenge, bishimangira ko imikorere y'inganda ihoraho. Amahame y'ingenzi arimo:
- EN 1434: Igipimo cy’ibanze cy’i Burayi ku bipimo by’ubushyuhe, gishyira ibipimo mu byiciro by’ubuziranenge bushingiye ku mikorere y’ibipimo by’amazi (urugero: Icyiciro cya 1, Icyiciro cya 2) n’ibipimo by’ubushyuhe.
- OIML R75: Amahame mpuzamahanga (Umuryango Mpuzamahanga w’Ibipimo by’Amategeko) agaragaza ibisabwa mu buvuzi no mu kwishyuza.
Muri rusange, ibipimo by'ubushyuhe bipima ubushyuhe byujuje ibi bikurikira mu gihe bikorera mu rugero rwabyo rwagenwe:
- Ubuziranenge bwo gupima amazi: ± 1% kugeza ± 2% by'agaciro kapimwe mu bihe byiza (urugero: amazi atembera neza, imiyoboro igororotse neza, n'ubuziranenge bw'amazi). Ku muvuduko muto w'amazi atembera (hafi y'amazi make apimwe na metero), ubuziranenge bushobora kugabanuka gato (urugero: ± 3% kugeza ± 5%).
- Ubuziranenge bwo gupima ubushyuhe: ± 0.1°C kugeza ± 0.2°C ku bikoresho bipima ubushyuhe (PT100 cyangwa PT1000 resistance thermometers), ibi ni ingenzi cyane kuko kubara ubushyuhe biterwa n'itandukaniro ry'ubushyuhe (ΔT) hagati y'amazi atangwa n'ayo asubizwa.
- Ubuziranenge bw'ibipimo by'ubushyuhe muri rusange: Ubushyuhe bubarwa hakoreshejwe formula Q=∫(qm×cp×ΔT)dt, aho qm ari urujya n'uruza rw'uburemere, cp ni ubushobozi bwihariye bw'ubushyuhe, naho ΔT ikaba itandukaniro ry'ubushyuhe. Ukoresheje ukuri kw'urujya n'uruza n'ubushyuhe, ukuri kose k'ubushyuhe akenshi kuva kuri ±2% kugeza kuri ±5% mu bihe byiza, byujuje ibisabwa byo kwishyuza (Icyiciro cya 2 cyangwa hejuru yabyo hakurikijwe EN 1434) no gukurikirana ibikorwa by'inganda.
2. Ibintu bigira ingaruka ku kuri
Nubwo ibipimo bya clamp-on byagenewe gukora neza cyane, imiterere y'ibintu mu buzima busanzwe ishobora kugira ingaruka ku mikorere. Ibintu by'ingenzi birimo:
a. Ibisabwa mu gushyiraho
Ibipimo byo gufunga bishingira ku bimenyetso bya ultrasonic binyujijwe mu rukuta rw'umuyoboro n'amazi, bigatuma gushyiraho ingenzi cyane:
- Kugororoka no Kuziba imiyoboro: Guhindagurika kw'imiyoboro y'amazi, valves, cyangwa pompe hafi y'icyuma gipima amazi bishobora guhindura imiterere y'amazi, bigagabanya ubuziranenge. Amabwiriza ngenderwaho (urugero, EN 1434) asaba ko imiyoboro y'amazi iba ifite uburebure buto bugororotse hejuru (urugero, umurambararo wa 10 × umuyoboro) n'umurambararo wa 5 × umuyoboro) kugira ngo habeho ko amazi atembera neza.
- Gushyira sensor ahantu hadakwiye: Guhuza neza sensor (urugero, kudahuza neza kwa transducers za ultrasonic) cyangwa guhuza nabi (urugero, icyuho cy'umwuka hagati ya sensors n'inkuta z'imiyoboro bitewe no gushyirwaho nabi) bishobora gutuma uburyo bwo kohereza ibimenyetso bugabanuka, bigatera amakosa mu gupima.
- Ubushobozi bw'imiyoboro n'amazi: Ibipimo bikora neza iyo imiyoboro ikoze neza kandi isukuye (nta kwangirika gukabije cyangwa gupima) n'amazi adasobanutse neza (urugero: amazi, uruvange rwa glycol). Ihumana rikomeye, ibisigazwa, cyangwa utubumbe tw'umwuka mu mazi bishobora gukwirakwiza ibimenyetso bya ultrasound, bigagabanya ubuziranenge.
b. Imiterere y'amazi
Ibiranga amazi apimwa bigira ingaruka ku buryo butaziguye ku ihererekanya ry'ibimenyetso:
- Umucyo w'amazi: Udupira, ibintu bikomeye, cyangwa uduce duto duto (urugero: umwanda, ibisigazwa) bishobora gukwirakwiza imiraba ya ultrasound, bigatera gutakaza cyangwa gusubiza ibimenyetso. Nubwo ibipimo bya none bikoresha uburyo bugezweho bwo gutunganya ibimenyetso kugira ngo biyungurure urusaku, amazi afite umwanda mwinshi ashobora kugabanya ubuziranenge.
- Ubushyuhe n'ubukonje: Ku mazi afite ubushyuhe bwinshi (urugero: uruvange rwa glycol n'amazi ku bushyuhe buri hasi), imiterere y'amazi ishobora guhinduka, ariko ibipimo by'amazi akoreshwa mu gupima ubushyuhe muri rusange bihinduka cyane kugeza ku rugero rwo hagati.
- Ingano y'Ingano y'Ingano y'Ingano: Ubunyangamugayo buragabanuka hanze y'urwego rwagenwe rw'imashini (urugero: amazi ari make cyane aho igipimo cy'urusaku kigabanuka). Abakora batanga "igipimo cyo kugabanuka" (urugero: 1:100 cyangwa 1:200) kigaragaza urwego rw'umuvuduko w'amazi aho ubunyangamugayo bukomeza kugaragara.
c. Ibintu bifitanye isano n'ibidukikije
- Urusaku rwo hanze: Kunyeganyega, kubangamira ingufu z'amashanyarazi (EMI), cyangwa urusaku rw'amajwi ruturuka mu mashini ziri hafi aho bishobora kubangamira ibimenyetso bya ultrasound. Ibipimo bifite uburyo bwo kuyungurura ibimenyetso bigezweho bigabanya ibi, ariko gushyirwa mu nganda ahantu harangwa urusaku bishobora gusaba uburinzi bw'inyongera.
- Ubushyuhe Bukabije: Imikorere ya sensor ishobora guhindagurika mu bushyuhe bukabije bw’ikirere (urugero, < -20°C cyangwa > 60°C), nubwo metero zikoreshwa mu nganda zagenewe kwihanganira intera nini nta makosa menshi.
3. Ubunyangamugayo muri porogaramu zikoreshwa mu buzima busanzwe
Mu by’ukuri, uburyo bwo gupima ubushyuhe bwa ultrasound bukoresha clamp-on bukomeza gukoreshwa mu bikorwa byinshi iyo hakurikizwa uburyo bwiza:
- Inyemezabwishyu n'Ubushyuhe bw'Akarere: Ku bijyanye no kwishyura ibikoresho by'amashanyarazi (bigenzurwa n'amahame agenga ubuziranenge), ibipimo birapimwa kugira ngo bihuze n'icyiciro cya 2 cyangwa kirenga hakurikijwe EN 1434, bigamije kwemeza ko ikiguzi gitangwa neza hagati y'abatanga ibicuruzwa n'abakoresha.
- Gukurikirana Imikorere y'Inganda: Mu nganda, mu gutanga amashanyarazi, cyangwa muri sisitemu za HVAC, ibipimo bikunze gukora neza hagati ya ± 2% na ± 3%, bihagije mu kunoza ikoreshwa ry'ingufu, kumenya ibidakora neza (urugero: gutakaza ubushyuhe), no kugenzura inzira.
- Uburyo bwo kongera gukora: Mu miyoboro ishaje ifite uburebure, ingese, cyangwa imiterere y’amazi idakwiye, ubuziranenge bushobora kuba buri hasi gato (urugero, ± 3% kugeza ± 5%), ariko ibi akenshi biba byiza kuruta metero zikoreshwa mu gutera amazi, zishobora gutuma amazi ava cyangwa agahagarara mu gihe cyo gushyiraho.
4. Ibyiza ugereranyije na metero zikoreshwa mu gukora neza
Nubwo ibipimo by'ubushyuhe bya ultrasonic cyangwa mekanike bishobora gutanga ubuziranenge buri hejuru gato mu bihe byiza, ibipimo by'ubushyuhe bitanga inyungu zidasanzwe zijyanye n'ubuziranenge:
- Nta kugabanuka k'umuvuduko cyangwa guhungabana k'amazi: Ibipimo bibangamira amazi atembera, bigatera amakosa mu gupima; imiterere y'imiyoboro igabanya umuvuduko imbere, bigatuma amazi atembera neza.
- Ingaruka zo kubungabunga zigabanuka: Nta bice byimuka cyangwa ibice by'imbere bivuze ko byangiritse uko igihe kigenda, bigakomeza kuba byiza kuruta metero zipima (ziba zangiritse bitewe no gukururana cyangwa kwangirika).
Incamake
Ibipimo by'ubushyuhe bya ultrasonic bipima ubushyuhe bitanga ubuziranenge bwa ± 1% kugeza kuri ± 3% mu bihe byiza (gushyiraho neza, amazi meza, amazi atembera neza) na ± 3% kugeza kuri ± 5% mu bihe bigoye mu buzima busanzwe, byujuje ibisabwa na EN 1434, OIML R75, n'andi mahame. Ubuziranenge bwabyo burahagije mu kwishyura, kugenzura ibikorwa by'inganda, no gucunga ingufu, hamwe n'inyungu zo gushyiraho ibintu bidahungabanya kandi bikaba byizewe igihe kirekire. Ku bikorwa by'ingenzi, ubushakashatsi mbere yo gushyiraho aho biherereye (kugira ngo harebwe imiterere y'imiyoboro n'imiterere y'amazi atembera) no kugenzura uruganda byongera kwemeza ubuziranenge bwiza.
Igihe cyo kohereza: 22 Nyakanga-2025