{"id":4748,"date":"2026-09-10T16:44:24","date_gmt":"2026-09-10T08:44:24","guid":{"rendered":"https:\/\/www.qxymachinery.com\/?p=4748"},"modified":"2026-09-11T17:43:20","modified_gmt":"2026-09-11T09:43:20","slug":"pressure-gauge-accuracy-a-pcb-wet-line-purchasing-guide","status":"publish","type":"post","link":"https:\/\/www.qxymachinery.com\/vi\/pressure-gauge-accuracy-a-pcb-wet-line-purchasing-guide\/","title":{"rendered":"\u0110\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t: H\u01b0\u1edbng d\u1eabn mua h\u00e0ng cho m\u1ea1ch in PCB d\u1ea1ng \u01b0\u1edbt."},"content":{"rendered":"

\"Pressure<\/p>\n

Hai b\u00e1o gi\u00e1 c\u00f3 th\u1ec3 c\u00f9ng hi\u1ec3n th\u1ecb ph\u1ea7n tr\u0103m \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t nh\u01b0ng v\u1eabn m\u00f4 t\u1ea3 c\u00e1c gi\u1edbi h\u1ea1n \u0111o kh\u00e1c nhau. Chi ti\u1ebft b\u1ecb thi\u1ebfu th\u01b0\u1eddng l\u00e0 c\u01a1 s\u1edf c\u1ee7a ph\u1ea7n tr\u0103m \u0111\u00f3. \u0110\u1ed1i v\u1edbi ng\u01b0\u1eddi mua linh ki\u1ec7n PCB d\u1ea1ng \u01b0\u1edbt, h\u00e3y b\u1eaft \u0111\u1ea7u b\u1eb1ng \u00e1p su\u1ea5t m\u00e0 h\u1ecd s\u1ebd \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh, sau \u0111\u00f3 chuy\u1ec3n \u0111\u1ed5i m\u1ed7i b\u00e1o gi\u00e1 th\u00e0nh \u0111\u01a1n v\u1ecb \u00e1p su\u1ea5t t\u1ea1i \u0111i\u1ec3m \u0111\u00f3. \u0110i\u1ec1u n\u00e0y cung c\u1ea5p cho b\u1ed9 ph\u1eadn b\u1ea3o tr\u00ec v\u00e0 mua h\u00e0ng m\u1ed9t c\u01a1 s\u1edf chung \u0111\u1ec3 th\u1ea3o lu\u1eadn v\u1ec1 ph\u1ea1m vi, b\u1eb1ng ch\u1ee9ng hi\u1ec7u chu\u1ea9n v\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n ch\u1ea5p nh\u1eadn.<\/p>\n

So s\u00e1nh \u0111\u1ed9 ch\u00ednh x\u00e1c to\u00e0n d\u1ea3i, \u0111\u1ed9 ch\u00ednh x\u00e1c d\u1ef1a tr\u00ean \u0111\u1ecdc v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c theo d\u1ea3i.<\/b><\/strong><\/h2>\n

Tr\u01b0\u1edbc khi so s\u00e1nh gi\u00e1 c\u1ea3, h\u00e3y y\u00eau c\u1ea7u m\u1ed7i nh\u00e0 cung c\u1ea5p n\u00eau r\u00f5 quy \u01b0\u1edbc v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c m\u1ed9t c\u00e1ch \u0111\u1ea7y \u0111\u1ee7. Gi\u1eef nguy\u00ean n\u1ed9i dung g\u1ed1c b\u00ean c\u1ea1nh b\u1ea3ng t\u00ednh c\u1ee7a b\u1ea1n.<\/p>\n

H\u00e3y \u0111\u1ecdc ph\u1ea7n \"C\u01a1 s\u1edf c\u1ee7a t\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m\"<\/b><\/strong><\/h3>\n

\u0110\u1ed1i v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c n\u00eau d\u01b0\u1edbi d\u1ea1ng ph\u1ea7n tr\u0103m c\u1ee7a to\u00e0n d\u1ea3i \u0111o, ph\u00e9p t\u00ednh s\u1eed d\u1ee5ng hi\u1ec7u s\u1ed1 gi\u1eefa gi\u1edbi h\u1ea1n tr\u00ean v\u00e0 gi\u1edbi h\u1ea1n d\u01b0\u1edbi c\u1ee7a d\u1ea3i \u0111o. \u0110\u1ed1i v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt d\u1ef1a tr\u00ean gi\u00e1 tr\u1ecb \u0111o, ph\u1ea7n tr\u0103m \u0111\u01b0\u1ee3c n\u00eau s\u1ebd \u00e1p d\u1ee5ng cho gi\u00e1 tr\u1ecb \u0111o. M\u1ed9t s\u1ed1 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u0169ng bao g\u1ed3m m\u1ed9t h\u1eb1ng s\u1ed1 c\u1ed1 \u0111\u1ecbnh ho\u1eb7c s\u1eed d\u1ee5ng c\u00e1c gi\u1edbi h\u1ea1n kh\u00e1c nhau \u1edf c\u00e1c ph\u1ea7n kh\u00e1c nhau c\u1ee7a thang \u0111o. H\u00e3y \u00e1p d\u1ee5ng to\u00e0n b\u1ed9 bi\u1ec3u th\u1ee9c, bao g\u1ed3m c\u1ea3 c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u0111\u00f3.<\/p>\n

C\u1ee5m t\u1eeb \u201c\u0111\u1ed9 ch\u00ednh x\u00e1c m\u1ed9t ph\u1ea7n tr\u0103m\u201d l\u00e0 kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7 khi so s\u00e1nh gi\u00e1 c\u1ea3 s\u1ea3n ph\u1ea9m. H\u00e3y h\u1ecfi r\u00f5 t\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m \u0111\u00f3 l\u00e0 bao nhi\u00eau, \u0111i\u1ec1u ki\u1ec7n \u00e1p d\u1ee5ng l\u00e0 g\u00ec v\u00e0 li\u1ec7u tuy\u00ean b\u1ed1 \u0111\u00f3 c\u00f3 bao g\u1ed3m to\u00e0n b\u1ed9 c\u1ee5m l\u1eafp r\u00e1p \u0111\u01b0\u1ee3c ch\u00e0o b\u00e1n hay kh\u00f4ng. Tr\u00e1nh \u0111i\u1ec1n nh\u1eefng chi ti\u1ebft \u0111\u00f3 t\u1eeb m\u1ed9t trang kh\u00e1c trong danh m\u1ee5c s\u1ea3n ph\u1ea9m.<\/p>\n

So s\u00e1nh hai nh\u1ecbp \u1edf c\u00f9ng \u00e1p su\u1ea5t v\u1eadn h\u00e0nh.<\/b><\/strong><\/h3>\n

H\u00e3y xem x\u00e9t m\u1ed9t ph\u00e9p so s\u00e1nh gi\u1ea3 \u0111\u1ecbnh \u1edf \u00e1p su\u1ea5t 2 bar. C\u1ea3 hai \u0111\u1ed3ng h\u1ed3 \u0111o trong v\u00ed d\u1ee5 \u0111\u1ec1u c\u00f3 gi\u1edbi h\u1ea1n ghi tr\u00ean nh\u00e3n l\u00e0 \u00b11% c\u1ee7a d\u1ea3i \u0111o. C\u00e1c s\u1ed1 li\u1ec7u n\u00e0y ch\u1ec9 minh h\u1ecda ph\u00e9p t\u00ednh to\u00e1n h\u1ecdc; ch\u00fang kh\u00f4ng ph\u1ea3i l\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt s\u1ea3n ph\u1ea9m ho\u1eb7c ph\u1ea1m vi khuy\u1ebfn ngh\u1ecb c\u1ee7a Qixingyuan.<\/p>\n\n\n\n\n\n
V\u00ed d\u1ee5 v\u1ec1 ph\u1ea1m vi<\/strong><\/td>\nGi\u1edbi h\u1ea1n \u0111\u00e3 n\u00eau<\/strong><\/td>\nGi\u1edbi h\u1ea1n sai s\u1ed1 t\u00ednh b\u1eb1ng thanh<\/strong><\/td>\nSo v\u1edbi 2 bar<\/strong><\/td>\n<\/tr>\n
0\u20134 bar<\/td>\n\u00b11% c\u1ee7a ph\u1ea1m vi<\/td>\n\u00b10,04 bar<\/td>\n\u00b12% c\u1ee7a k\u1ebft qu\u1ea3 \u0111o<\/td>\n<\/tr>\n
0\u201310 bar<\/td>\n\u00b11% c\u1ee7a ph\u1ea1m vi<\/td>\n\u00b10,10 bar<\/td>\n\u00b15% c\u1ee7a k\u1ebft qu\u1ea3 \u0111o<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Trong v\u00ed d\u1ee5 n\u00e0y, kho\u1ea3ng \u0111o r\u1ed9ng h\u01a1n s\u1ebd t\u1ea1o ra gi\u1edbi h\u1ea1n tuy\u1ec7t \u0111\u1ed1i l\u1edbn h\u01a1n. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t \u1edf \u00e1p su\u1ea5t th\u1ea5p, h\u00e3y th\u1ef1c hi\u1ec7n so s\u00e1nh t\u1ea1i \u0111i\u1ec3m quy\u1ebft \u0111\u1ecbnh th\u1ef1c t\u1ebf tr\u01b0\u1edbc khi ch\u1ecdn ph\u1ea1m vi \u0111o.<\/p>\n

c\u1ee7a Th\u1ea5t Tinh Nguy\u00ean Th\u00f4ng tin v\u1ec1 \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t PP<\/u><\/a>\u00a0Li\u1ec7t k\u00ea \u0111\u1ea7y \u0111\u1ee7 c\u00e1c t\u00f9y ch\u1ecdn \u0111\u1ed9 ch\u00ednh x\u00e1c. H\u00e3y h\u1ecfi t\u00f9y ch\u1ecdn v\u00e0 ph\u1ea1m vi n\u00e0o \u00e1p d\u1ee5ng cho c\u1ee5m l\u1eafp r\u00e1p c\u1ee5 th\u1ec3 \u0111ang \u0111\u01b0\u1ee3c b\u00e1o gi\u00e1.<\/p>\n

 <\/p>\n

T\u00ednh to\u00e1n ng\u00e2n s\u00e1ch sai s\u1ed1 t\u1ea1i \u0111i\u1ec3m quy\u1ebft \u0111\u1ecbnh.<\/b><\/strong><\/h2>\n

Tr\u01b0\u1edbc ti\u00ean, h\u00e3y \u0111\u1ec3 ng\u01b0\u1eddi ch\u1ecbu tr\u00e1ch nhi\u1ec7m quy tr\u00ecnh x\u00e1c \u0111\u1ecbnh quy\u1ebft \u0111\u1ecbnh. \u0110\u00f3 c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t thao t\u00e1c ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh ho\u1eb7c vi\u1ec7c \u0111i\u1ec1u tra s\u1ef1 thay \u0111\u1ed5i \u00e1p su\u1ea5t tr\u00ean m\u1ed9t b\u1ed9 ph\u1eadn. Ghi l\u1ea1i v\u1ecb tr\u00ed v\u00e0 m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng c\u1ee7a ph\u00e9p \u0111o.<\/p>\n

Chuy\u1ec3n \u0111\u1ed5i ph\u1ea7n tr\u0103m th\u00e0nh \u0111\u01a1n v\u1ecb \u00e1p su\u1ea5t<\/b><\/strong><\/h3>\n

\u0110\u1ed1i v\u1edbi v\u00ed d\u1ee5 v\u1ec1 thang \u0111o to\u00e0n d\u1ea3i \u1edf tr\u00ean, h\u00e3y nh\u00e2n thang \u0111o v\u1edbi 0,01. Thang \u0111o 4 bar s\u1ebd cho k\u1ebft qu\u1ea3 l\u00e0 0,04 bar. H\u00e3y t\u00e1ch bi\u1ec7t gi\u1edbi h\u1ea1n n\u00e0y v\u1edbi sai s\u1ed1 hi\u1ec7u chu\u1ea9n \u0111o \u0111\u01b0\u1ee3c: gi\u1edbi h\u1ea1n quy \u0111\u1ecbnh v\u00e0 sai s\u1ed1 quan s\u00e1t \u0111\u01b0\u1ee3c l\u00e0 hai th\u00f4ng tin kh\u00e1c nhau.<\/p>\n

H\u00e3y y\u00eau c\u1ea7u nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 hi\u1ec7u chu\u1ea9n b\u00e1o c\u00e1o c\u00e1c sai s\u1ed1 quan s\u00e1t \u0111\u01b0\u1ee3c v\u00e0 \u0111\u1ed9 kh\u00f4ng ch\u1eafc ch\u1eafn c\u1ee7a ph\u00e9p \u0111o t\u1ea1i c\u00e1c \u0111i\u1ec3m \u0111\u00e3 th\u1ecfa thu\u1eadn. Sau \u0111\u00f3, h\u00e3y h\u1ecfi ch\u1ee7 s\u1edf h\u1eefu ph\u00e9p \u0111o xem \u0111\u1ed9 kh\u00f4ng ch\u1eafc ch\u1eafn \u0111\u00f3 s\u1ebd \u0111\u01b0\u1ee3c x\u1eed l\u00fd nh\u01b0 th\u1ebf n\u00e0o khi quy\u1ebft \u0111\u1ecbnh ch\u1ea5p nh\u1eadn. \u0110\u1eebng cho r\u1eb1ng m\u1ed9t thi\u1ebft b\u1ecb \u0111\u1ea1t y\u00eau c\u1ea7u ch\u1ec9 v\u00ec gi\u00e1 tr\u1ecb hi\u1ec3n th\u1ecb g\u1ea7n v\u1edbi gi\u00e1 tr\u1ecb tham chi\u1ebfu.<\/p>\n

H\u00e3y ghi r\u00f5 sai s\u1ed1 cho ph\u00e9p c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t b\u1eb1ng c\u00f9ng \u0111\u01a1n v\u1ecb v\u1edbi ti\u00eau ch\u00ed quy tr\u00ecnh, n\u00eau r\u00f5 b\u1ea5t k\u1ef3 ph\u00e9p chuy\u1ec3n \u0111\u1ed5i n\u00e0o.<\/p>\n

Ki\u1ec3m tra xem vi\u1ec7c m\u1edf r\u1ed9ng ph\u1ea1m vi thay \u0111\u1ed5i nh\u1eefng g\u00ec<\/b><\/strong><\/h3>\n

L\u1eb7p l\u1ea1i ph\u00e9p t\u00ednh cho t\u1eebng ph\u1ea1m vi \u0111\u1ec1 xu\u1ea5t. Vi\u1ec7c l\u1ef1a ch\u1ecdn ph\u1ea1m vi \u0111o \u00e1p su\u1ea5t c\u0169ng c\u1ea7n xem x\u00e9t c\u00e1c \u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng th\u1ef1c t\u1ebf, bao g\u1ed3m c\u1ea3 c\u00e1c sai l\u1ec7ch do ch\u1ee7 s\u1edf h\u1eefu thi\u1ebft b\u1ecb quy \u0111\u1ecbnh. Kh\u00f4ng n\u00ean ch\u1ecdn ph\u1ea1m vi h\u1eb9p h\u01a1n ch\u1ec9 v\u00ec ph\u00e9p t\u00ednh ph\u1ea7n tr\u0103m c\u1ee7a n\u00f3 tr\u00f4ng c\u00f3 v\u1ebb kh\u1ea3 quan.<\/p>\n

\u0110\u1ec3 xem x\u00e9t b\u00e1o gi\u00e1, h\u00e3y s\u1eed d\u1ee5ng m\u1ed9t d\u00f2ng cho m\u1ed7i b\u00e1o gi\u00e1 v\u00e0 gi\u1eef l\u1ea1i:<\/p>\n