EVDL-10A Quartz Oscillator Vacuum Gauge

1.Kakaretso ea sehlahisoa

EVDL-10A quartz vacuum meter ke vacuum meter e nang le quartz crystal oscillator joalo ka sensor.E na le mefuta e mengata e fapaneng le ho nepahala ho phahameng.Vacuum gauge e na le yuniti ea taolo le taolo, 'me tube ea dijithale ea karolo ea taolo e bonts'a boleng ba khatello.

2.Technical specifications

1. Lebelo la ho lekanya: 5×10-1-105Pa

2. Phepelo ea Matla: AC 220V,50Hz

3. MATLA:7W

4.Chassis litekanyo: 180mm×80mm×200mm (L*W*D)

5. Bolelele ba cable 2m

3.Molao-motheo oa ho sebetsa

EVDL-10A quartz vacuum meter ke meter ea vacuum e entsoeng ka ho sebelisa litšobotsi tsa quartz crystal oscillator resonance impedance le khatello ea khase.Quartz crystal oscillator ho EVDL-10A quartz vacuum gauge hase feela karolo ea oscillator, empa hape ke sensor bakeng sa ho lekanya khatello ea khase.Quartz crystal oscillator e kenngoa ka har'a khetla ea aluminium ho etsa pipe ea gauge ka bophara ba 15.5mm, e ka kenngoa tsamaisong ka sebopeho.Potoloho ea ho lekanya ea resonance impedance e bontšoa ho Setšoantšo sa 1:

Setšoantšo sa 1 Resonant impedance methance circuit

Resonant impedance Z= V AB

V_ABke motlakase ho pholletsa le kristale

Ke hona joale ho phallang ka har'a kristale

Hajoale I e phalla ka har'a mohanyetsi oa R ka letoto le nang le kristale, 'me motlakase ho pholletsa le mohanyetsi ke VBD

∴ Ke = V BD

Z=V AB R

V_ABe batla e lekana le motlakase oa V₀ka mose ho AC, VBD e batla e lekana le motlakase oa V₁ho pholletsa le DC, 'me impedance e ka baloa ho tloha ho V e lekantsoeng₀, V₁le litekanyetso tsa ho hanyetsa.Microcomputer e le 'ngoe e fetola sekhahla hore e be khatello,' me tube ea dijithale e bonts'a boleng ba khatello.

4.Litšobotsi tsa quartz vacuum gauge

Metha ea vacuum ea quartz e tšoauoa ka molumo o monyane oa sensor.Boholo ba tšisinyeho ea kristale ea EVDL-10A quartz vacuum meter ke 3.2mm × 1.5mm × 0.8mm.Ka tsela ena, ntle le ho lekanya khatello ea khase joalo ka limithara tse ling tsa vacuum, meter ea vacuum e ka lekanya khatello ea khase ea molumo o monyane, joalo ka sesebelisoa se tiisitsoeng sa boholo ba 1cm3, 'me sa bona boemo ba ho ts'oara vacuum.

5.EVDL-10A Ho kengoa ha quartz vacuum gauge

Ho kenngoa ha EVDL-10A quartz vacuum gauge ho bontšoa ho Setšoantšo sa 2:

The quartz crystal oscillator le oscillating potoloho li behoa probe.Thapo e etellang pele e kenngoa ka har'a sokete ea karolo e ka morao ea yuniti ea taolo ka plug ea 5-pin, 'me phala e nang le bophara ba probe Φ15.5 e kenngoa tsamaisong ea vacuum.Hokela thapo ea motlakase soketeng e ka morao ea yuniti ea taolo ebe o hokela ntlha e 'ngoe ka har'a sesebelisoa sa motlakase.Sehlahisoa sa motlakase se lokela ho ba le terata ea fatše ho theola chassis ea yuniti ea taolo.Bulela sesebelisoa sa motlakase 'me yuniti ea taolo ea dijithale e bonts'a boleng ba khatello.Pontšo ea tube ea dijithale 3.2 E 2 e bolela hore boleng ba khatello ke 3.2 × 102Pa.

6.Quartz vacuum gauge calibration

Ha mocheso oa tikoloho o fetoha, EVDL-10A e lokela ho lekanngoa ka tsela e latelang:

1. Phetoho ea lintlha tsa Zero: Ka mor'a hore mochine o tsitse halofo ea hora, ha khatello e le tlase ho 10-3Pa, tobetsa konopo ka lesoba la zero la karolo e ka pele ea setsi sa taolo le screwdriver ho e lokolla.Haeba sistimi ea vacuum e sa fihle ho 10-3Pa, konopo ea zero e ke ke ea hatelloa.

2. Taolo ea atmospheric: Hlahisa sepakapaka ho taolo, tobetsa konopo ka lesoba la sepakapaka la karolo e ka pele ea yuniti ea taolo ka screwdriver ho e lokolla.