I-actuator ye-pneumaticIsixhobo esiphambili sisixhobo sokulawula ivalvu. Sisebenza ngaxeshanye ne-actuator yomoya ukwandisa ukuchaneka kwendawo yevalvu, ukunciphisa imiphumo yamandla angalinganiyo kunye nokungqubana kwesiqu sesixhobo, kunye nokuqinisekisa ukuba ivalvu isabela kwisignali yomlawuli. Sifumana indawo efanelekileyo.

Ezi meko zilandelayo zifuna ukusetyenziswa kwe-locator:

1. Xa kukho umahluko omkhulu kuxinzelelo kunye noxinzelelo oluphakathi oluphezulu;

2. Xa ubukhulu bevalvu elawulayo bukhulu (DN > 100);

3. Ivalvu elawula amaqondo obushushu aphezulu okanye aphantsi;

4. Xa kubalulekile ukukhawulezisa umsebenzi wevalvu elawulayo;

5. Xa kusetyenziswa imiqondiso eqhelekileyo ukuqhuba ii-actuators ezinee-spring ranges ezingaqhelekanga (ii-spring ranges ezingaphandle kwe-20-100KPa);

6. Nanini na xa kusetyenziswa ulawulo lobubanzi obuhlukeneyo;

7. Xa ivalvu ijikeleziswa, imiyalelo yokuvala umoya kunye nemiyalelo yokuvula umoya iyatshintshana;

8. Xa i-positioner cam kufuneka iguqulwe ukuze kutshintshwe iimpawu zokuhamba kwevalvu;

9. Xa kufuneka kwenziwe isenzo esilinganayo, akukho mfuneko ye-actuator yesipringi okanye yepiston;

10. Ii-positioners zevalvu zombane-zomoya kufuneka zisasazwe xa kusetyenziswa imiqondiso yombane ukulawula ii-actuators zomoya.

Ivalvu ye-electromagnetic:
Kufuneka kufakwe ivalvu yesolenoid kwinkqubo xa kufuneka ulawulo lwenkqubo okanye ulawulo lweendawo ezimbini. Ukusebenzisana phakathi kwevalvu yesolenoid kunye nevalvu elawulayo kufuneka kuthathelwe ingqalelo xa kukhethwa ivalvu yesolenoid ukongeza kumthombo wamandla we-AC kunye ne-DC, i-voltage, kunye ne-frequency. Inokuba nokusebenza "okuqhelekileyo okuvulekileyo" okanye "okuqhelekileyo okuvaliweyo".
Iivalvu ezimbini zesolenoid zingasetyenziswa ngaxeshanye ukuba kuyimfuneko ukwandisa umthamo wevalvu yesolenoid ukuze kuncitshiswe ixesha lokusebenza, okanye ivalvu yesolenoid ingasetyenziswa njengevalvu yovavanyo kunye ne-relay yepneumatic enamandla amakhulu.
Ukudluliselwa kwe-pneumatic:
I-relay ye-pneumatic luhlobo lwe-amplifier yamandla enokudlulisa isignali yoxinzelelo lomoya kude ukuze kuncitshiswe ixesha lokulibaziseka elibangelwa kukolulwa kwemibhobho yesignali. Phakathi komlawuli kunye nevalvu yokulawula intsimi, kukho umsebenzi owongezelelweyo wokwandisa okanye ukunciphisa ukwandiswa kwesignali. Isetyenziswa ngokuyintloko phakathi komthumeli wentsimi kunye nesixhobo sokulawula kwigumbi lolawulo eliphakathi.

isiguquli:
Kukho iintlobo ezimbini zee-converters: i-converter yegesi yombane kunye ne-converter yegesi yombane. Ukuqonda ukuguqulwa okulinganayo kobudlelwane obuthile phakathi kwe-gas kunye ne-electrical signals yiloo nto iyenzayo. Isetyenziswa kakhulu ukuguqula i-0 100KPa gas signals ibe yi-0 10 mA okanye i-0 4 mA electric signals, okanye i-0 10 mA okanye i-4 mA electric signals ibe yi-0 10 mA okanye i-4 mA electric signals.

Umlawuli wesihluzi somoya:
Isincamathiselo sesixhobo esisetyenziswa kwizixhobo zokwenza izinto ngokuzenzekelayo kwimizi-mveliso yivalvu yokwehlisa uxinzelelo lwesihluzo somoya. Umsebenzi wayo oyintloko kukuzinzisa uxinzelelo kwinqanaba elifunekayo ngelixa kuhluzwa kwaye kucocwa umoya ocinezelweyo ovela kwi-air compressor. Isilinda somoya, izixhobo zokutshiza, imithombo yonikezelo lomoya, kunye nezixhobo zokuzinzisa uxinzelelo lwezixhobo ezincinci zomoya zezinye zemizekelo yezixhobo zomoya kunye neevalvu zesolenoid ezinokusetyenziswa kuzo.

Ivalvu ezitshixayo (ivalufu yokhuseleko):
Ivalvu ezitshixayo yindlela egcina ivalvu isendaweni yayo. Xa umthombo womoya ungaphumeleli, isixhobo singawucima umqondiso womthombo womoya ukuze sigcine umqondiso woxinzelelo lwegumbi le-membrane okanye isilinda kwinqanaba laso langaphambi kokusilela kunye nendawo yevalvu kwindawo yaso yangaphambi kokusilela. Kwimpembelelo yokhuseleko lwendawo.

umthumeli wesikhundla sevalvu
Xa ivalvu elawulayo ikude negumbi lolawulo, kuyimfuneko ukuxhobisa i-transmitter yendawo yevalvu, eguqula ukufuduka kokuvulwa kwevalvu ibe yisignali yombane kwaye iyithumele kwigumbi lolawulo ngokuhambelana nomthetho omiselweyo, ukuze kuqondwe ngokuchanekileyo indawo yokutshintsha kwevalvu ngaphandle kokuya kwindawo. Isignali inokuba yisignali eqhubekayo emele naluphi na ukuvulwa kwevalvu okanye inokuthathwa njengomsebenzi wokubuyisela umva wevalvu.

Utshintsho lokuhamba (unxibelelwano)
Iswitshi yomda yinxalenye edlulisela isignali yesalathisi ngaxeshanye kwaye ibonakalisa iindawo ezimbini ezigqithisileyo zeswitshi yevalvu. Igumbi lolawulo lingaxela imeko yeswitshi yevalvu ngokusekelwe kolu phawu kwaye lithathe amanyathelo afanelekileyo.