Ishlash printsipi of turli suyuqlik daraja o'tkazgichlar

Ishlash printsipi of turli suyuqlik daraja o'tkazgichlar

Level switch, as the name suggests, used to control the level of the switch. From the form is asosan bo'linadi contact and non-contact. Non-contact type such capacitive level switch, contact type such such 3a float type level switch, electrode type level switch, elektron level switch. Capacitive level switches can also be implemented by contact method.

1 Float level switch

float level switch ning tuzilishi asosan mo'ljallangan va hosil bo'lgan buoyantlik prinsipi va statik magnit maydoni. The float ning pozitsiyasi bilan a magnit (ko'rsatilgan suzgich) ichida o'lchangani o'rta ta ta'sir ta'sir buoyncy: the o'zgarishi ichidagi suyuqlik daraja sabablari sabablari the o'zgarishi ichida o'zgarish joyi magnit float. The magnet in the float va the sensor (magnit qamish o'tish) act to act to act to suzgich 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 3 0 5 bo'ladiproduce a switching signal.

2 Tuning fork suyuq daraja o'tkazgich

ish printsipi the tuning fork level switch is to vibrate the tuning fork at a certain rezonant frequency through a pair of piezoelektrik kristallar o'rnatilgan on the base. qachon tuning fork of the tuning fork in contact with the measured medium, the frequency and amplituda of the tunning fork change, and these these o'zgarishlar the tuning fork level switch bo'ladi tomonidan aniqlanadi the aqlli tuman, qayta ishlangan va aylantirilgan ichiga a o'tish signal to erishish uchun maqsad suyuqlik darajasi ogohlantirish yoki nazorat. To ruxsat to the tuning fork to reach into the tank, the tuning fork switch odatda o'rnatilgan yon tomon yoki tepa of of the tank using a flange or threaded craft joint.

3 Capacitive level switch

o'lchash printsipi ning kapasitiv sati o'tkazgich ning darajasi ning darajasi qattiq material o'zgarishi natijasida o'lcham ning o'lchami the probel qoplangan maydoni o'zgarishi, natijada a o'zgarishi da the ning o'zgarishi capacitance value. The probe and the tank wall (made of conductive material) form a capacitor. When the probe in the air, it measures a small initial capacitance value. u erda material inyeksiya ichida tank, the capacitance value increase the increase the area covered by the probel material, va the switch holati o'zgaradi.

4 Tashqi suyuqlik daraja o'tkazgich

Tashqi suyuqlik darajasi o'tkazgich a turi aloqa suyuqligi darajasi o'tish tomonidan amalga oshirilgan % 22freksiya konversiya ultrasonik texnologiya", qaysi keng ishlatiladi in suyuqlik aniqlash turli suyuqliklar. The o'lchash prob o'rnatilgan bo'ladi tashqari devor of of the idish va tegishli a a butunlay kontakt bo'lmagan o'lchash asbob uchun aniqlash suyuq daraja uchun tashqaridan tashqaridan tank. Asbob o'lchash prob uzatish ultratovush to'lqin va uning aniqlaydi uning asbobi uning qoldiq vibratsiya signali da idish devorida. qachon suyuqlik to'kiladi the probel, the amplituda of the qoldiq tebranish ning signal kichikroq bo'ladi kichikroq bo'ladi. Keyin bu o'zgarish aniqlanadi bo'lgan asbob tomonidan asbob, a switch signal is chiqish ga erishish uchun erishish maqsadi suyuqlik darajasi signal.