Lingaliro la mitundu yamphamvu, sensor ndi transmitter

Pressure: Mphamvu ya sing'anga yamadzimadzi yogwira ntchito pagawo la unit. Muyeso wake wovomerezeka ndi pascal, woimiridwa ndi Pa.

Kupanikizika Kwambiri (P_A): Kupanikizika kuyeza kutengera vacuum mtheradi (zero pressure).

Kuthamanga kwa gauge (P_G): Kupsyinjika komwe kumayesedwa potengera kupanikizika kwenikweni kwa mlengalenga.

Kuthamanga kosindikizidwa (P_S): Kupanikizika koyezedwa kutengera kupanikizika kwapakatikati (101,325Pa).

Kupanikizika koipa: Pamene mtengo wa gauge pressure <real absolute pressure. Imatchedwanso kuti vacuum degree.

Kusiyana kwamphamvu (P_D): Kusiyana kwa kupanikizika pakati pa mfundo ziwiri zilizonse.

Pressure sensor: Chipangizochi chimazindikira kupanikizika ndikusintha siginecha yakukakamiza kukhala siginecha yotulutsa magetsi molingana ndi dongosolo linalake. Palibe gawo la amplifier mkati mwa sensa. Zotulutsa zonse nthawi zambiri zimakhala milivolt unit. Sensa ili ndi mphamvu yonyamulira yotsika ndipo siyitha kulumikizana ndi kompyuta mwachindunji.

Pressure transmitter: Transmitter imatha kusintha siginecha yamagetsi kukhala siginecha yokhazikika yotulutsa magetsi yokhala ndi mgwirizano wopitilira mizere. Zizindikiro zolumikizana zotuluka nthawi zambiri zimakhala zachindunji: ① 4 ~ 20mA kapena 1 ~ 5V; ② 0 ~ 10mA 0 ~ 10V. Mitundu ina imatha kulumikizana ndi kompyuta mwachindunji.

 

Pressure transmitter = Pressure sensor + Dedicated amplifier circuit

 

M'zochita, anthu nthawi zambiri sasiyanitsa pakati pa mayina a zida ziwirizi. Wina atha kuyankhula za sensa yomwe komabe imatanthawuza transmitter yokhala ndi 4 ~ 20mA.