Lingaliro la mitundu yokakamiza, sensa ndi transmitter

Kupanikizika: Mphamvu ya madzi ogwiritsira ntchito pa gawo la gawo. Gawo lake lovomerezeka ndi pascal, loyimiridwa ndi Pa.

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

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

Kupanikizika kosindikizidwa (P)_S): Kupanikizika koyezedwa kutengera kupanikizika kwapakatikati (101,325Pa).

Kupanikizika koipa: Pamene mtengo wa gauge pressure

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 yokakamiza kukhala siginecha yokhazikika yamagetsi yokhala ndi maulalo osalekeza. Zizindikiro zolumikizana zotuluka nthawi zambiri zimakhala zachindunji: ① 4 ~ 20mA kapena 1 ~ 5V; ② 0 ~ 10mA kapena 0 ~ 10V. Mitundu ina imatha kulumikizana ndi kompyuta mwachindunji.

 

Pressure transmitter = Pressure sensor + Dedicated amplifier circuit

 

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