日本原裝SMC2色顯示數(shù)字式流量開關(guān)

熱式流量開關(guān)是利用探測頭溫度變化的原理設(shè)計(jì)。在探頭內(nèi)置發(fā)熱傳感器及感熱傳感器，并與介質(zhì)接觸。測量時(shí)，發(fā)熱傳感器發(fā)出恒定的熱量，當(dāng)管道內(nèi)沒有介質(zhì)流動(dòng)，感熱傳感器接收到的熱量是一個(gè)恒定值，當(dāng)有介質(zhì)流動(dòng)時(shí)，感熱傳感器所接收到的熱量將隨介質(zhì)的流速變化而變化，感熱傳感器將這溫差信號轉(zhuǎn)化成電信號，再經(jīng)過電路轉(zhuǎn)換為對應(yīng)的接點(diǎn)信號或模擬量信號。
熱擴(kuò)散流量開關(guān)原理，熱擴(kuò)散技術(shù)是一種在苛刻條件下性能優(yōu)良、可靠性高的技術(shù)，其典型原理是當(dāng)兩個(gè)傳感元件被置于流體中時(shí)，其中一個(gè)被加熱，另一個(gè)用于感應(yīng)過程溫度。兩個(gè)傳感元件之間的溫差與過程流速及過程介質(zhì)的性質(zhì)有關(guān)。兩個(gè)傳感元件之間的溫差在無流量狀態(tài)下zui大，但隨著流量的增加，被加熱的傳感元件冷卻，溫差減小。流體流速直接影響熱擴(kuò)散的程度。

日本原裝SMC2色顯示數(shù)字式流量開關(guān)

PFM300
PFM300-M
PFM300-MLEF
PFM311-M
PFM510-01-1
PFM510-01-2
PFM510-C4-1
PFM510-C6-1
PFM510-C6-1-N-T
PFM511-02-1
PFM511S-02-1
PFM511S-02-1-WS
PFM525-01-1
PFM525-C6-2
PFM710-01-A
PFM710-01-A-M
PFM710-01-C
PFM710-01-D
PFM710-01-D-M
PFM710-01-F
PFM710-01-G
PFM710-C4-A
PFM710-C4-A-A
PFM710-C4-A-M
PFM710-C6-A
PFM710-C6-A-M
PFM710-C6-C-MAR
PFM710S-01-A
PFM710S-01-A-MA
PFM710S-01-C
PFM710S-01L-A-M
PFM710S-C4-A
PFM710S-C4-A-M
PFM710S-C4-D-A
PFM710S-C4L-AMV
PFM710S-C6-A-A
PFM710S-C6-A-M
PFM710S-C6-A-MA
PFM710S-C6-AMAW
PFM710S-C6-B-M
PFM710S-C6L-A-M
PFM710S-F01-F
PFM711-02-A
PFM711-02-B-M
PFM711-02-D-M
PFM711-02-F-A
PFM711-C6-A-M
PFM711-C6-B
PFM711-C6-C
PFM711-C8-A
PFM711-C8-A-M
PFM711-C8-C-M
PFM711-C8-F-A
PFM711-N7-F-A
PFM711S-02L-A-M
PFM711S-C6-A-MA
PFM711S-C6-AMAW
PFM711S-C6-B
PFM711S-C6-C
PFM711S-C6-C-A
PFM711S-C6-CAWS
PFM711S-C8-A-M
PFM711S-C8-CAWS
PFM711S-C8L-A
PFM711S-C8L-A-M
PFM7202-06-C
PFM725-01-A
PFM725-01-C
PFM725-C6-A
PFM725-C6-A-M
PFM725-C6-B-M
PFM725-C6-D
PFM725-C6L-A-T
PFM725-C8-A
PFM725-C8-F
PFM725-F01-E
PFM725S-01-A
PFM725S-01-C
PFM725S-01-C-M
PFM725S-01L-A
PFM725S-C6-A
PFM725S-C6-A-M
PFM725S-C6-A-MA
PFM725S-C6-AMAW
PFM725S-C6-C
PFM725S-C6-E-S
PFM725S-F01-F
PFM750-01-A
PFM750-01-B
PFM750-01L-A
PFM750-C6-A
PFM750-C6-C-M
PFM750-C8-A
PFM750-C8-A-M
PFM750S-01-A
PFM750S-01-A-A
PFM750S-01-A-M
PFM750S-01-AMNS
PFM750S-01-B-M
PFM750S-01-D-A
PFM750S-01-G
PFM750S-01L-A-M
PFM750S-01L-AMV
PFM750S-C6-A
PFM750S-C6-A-M
PFM750S-C6-A-MS
PFM750S-C6-CAWS
PFM750S-C6L-A-M
PFM750S-C8-A-M
PFM750S-C8-D
PFM750S-C8-H
PFM750S-C8L-A-M
PFM750S-C8L-B