{"id":6221,"date":"2025-04-22T14:15:32","date_gmt":"2025-04-22T06:15:32","guid":{"rendered":"http:\/\/beite.wangluocloud.com\/?p=6221"},"modified":"2026-02-10T16:20:36","modified_gmt":"2026-02-10T08:20:36","slug":"miniature-thermal-gas-mass-flow-meter","status":"publish","type":"post","link":"https:\/\/www.inst-tech.net\/ar\/products\/flow-measurement\/thermal-mass-flow-meter\/miniature-thermal-gas-mass-flow-meter\/","title":{"rendered":"Miniature Thermal Gas Mass Flow Meter"},"content":{"rendered":"

Product features:<\/h4>\n

\u2605 MEMS sensor, fast response speed;
\n\u2605 Stable zero point, high precision and good repeatability;
\n\u2605 Wide range ratio, optional flow range;
\n\u2605 Optional display direction (0\u00b0, 90\u00b0, 180\u00b0, 270\u00b0);
\n\u2605 Multiple signal outputs are optional;
\n\u2605 Standard mechanical interface is optional;<\/p>\n

 <\/p>\n

Product features:<\/h4>\n

\"Miniature<\/p>\n

 <\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Display<\/td>\nS-without display, D with display<\/td>\n<\/tr>\n
Pipe diameter<\/td>\n8<\/td>\nDN8<\/td>\nFlow measurement range 1.8-180L\/min<\/td>\n<\/tr>\n
 <\/td>\n10<\/td>\nDN10<\/td>\nFlow measurement range 2.8-280L\/min<\/td>\n<\/tr>\n
 <\/td>\n15<\/td>\nDN15<\/td>\nFlow measurement range 6-600L\/min<\/td>\n<\/tr>\n
 <\/td>\n20<\/td>\nDN20<\/td>\nFlow measurement range 10-1000L\/min<\/td>\n<\/tr>\n
 <\/td>\n25<\/td>\nDN25<\/td>\nFlow measurement range 15-1500L\/min<\/td>\n<\/tr>\n
 <\/td>\n32<\/td>\nDN32<\/td>\nFlow measurement range 25-2500L\/min<\/td>\n<\/tr>\n
Maximum flow<\/td>\nL1 express 1L\/min\u3001L200 express 200L\/min \u3001L1500 express 1500L\/min<\/td>\n<\/tr>\n
Mechanical interface<\/td>\nPN<\/td>\n0<\/td>\nPT1\/4 Internal thread (DN8)<\/td>\n<\/tr>\n
 <\/td>\n <\/td>\n1<\/td>\nPT3\/8 Internal thread (DN10)<\/td>\n<\/tr>\n
 <\/td>\n <\/td>\n2<\/td>\nPT1\/2 Internal thread (DN15)<\/td>\n<\/tr>\n
 <\/td>\n <\/td>\n3<\/td>\nPT3\/4 Internal thread (DN20)<\/td>\n<\/tr>\n
 <\/td>\n <\/td>\n4<\/td>\nPT1 Internal thread (DN25)<\/td>\n<\/tr>\n
 <\/td>\n <\/td>\n5<\/td>\nPT1-1\/4 Internal thread (DN32)<\/td>\n<\/tr>\n
 <\/td>\nGN express G Internal thread\u3001NW express NPT External thread\u3001 NT is Special custom thread\uff1b\uff08default PN\uff09<\/td>\n<\/tr>\n
Output Model<\/td>\nN0 express RS485 and 4-20mA\uff08default\uff09<\/td>\n<\/tr>\n
 <\/td>\nN1 express RS485 and 1-5V<\/td>\n<\/tr>\n
 <\/td>\nN2 express RS485 and 4-20mA\u3001pulse<\/td>\n<\/tr>\n
 <\/td>\nN3 express RS485 and 4-20mA\u3001PNP<\/td>\n<\/tr>\n
Measuring medium type<\/td>\nMeasuring medium type\uff0cAIR is air (default)\uff0cN2 is nitrogen, O2 is oxygen, CO2 is carbon dioxide, and MG is mixed gas.<\/td>\n<\/tr>\n
Pressure level<\/td>\nP0 means \u22641.6MPa (default), P1 means customized higher pressure level<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Note: Flow measurement range (air medium).<\/p>\n

 <\/p>\n\n\n\n\n\n<\/tr>\n<\/tr>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

Air calibration to measure the range of other medium gases<\/h4>\n

Product series<\/td>\nWhether to display<\/td>\nPipe diameter<\/td>\nflow<\/td>\nmechanical interface<\/td>\nOutput signal<\/td>\nmedium<\/td>\npressure level<\/td>\n<\/tr>\n
LF501<\/td>\nD<\/td>\n10<\/td>\nL200<\/td>\nPN1<\/td>\nNO<\/td>\nAIR<\/td>\nPO<\/td>\n<\/tr>\n
Example:
\nModel:LF501-D10L200PN1NOAIRPO
\nParameters:LF501 Series, measuring medium: air, measuring range: 2-200L\/min, pipe diameter: DN10,Dutput signal: RS485 and 4-20mA, pressure less than 1.6MPa
\nMechanical interface: PT3\/8 internal thread.<\/td>\n<\/tr>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Serial number<\/td>\n\n

gas<\/p>\n<\/td>\n

\n

Conversion Factor<\/p>\n<\/td>\n

\n

Percentage of range<\/p>\n<\/td>\n<\/tr>\n

\n

1<\/p>\n<\/td>\n

\n

AIR<\/p>\n<\/td>\n

\n

1.0<\/p>\n<\/td>\n

\n

100%<\/p>\n<\/td>\n<\/tr>\n

\n

2<\/p>\n<\/td>\n

\n

O2<\/p>\n<\/td>\n

\n

0.9861<\/p>\n<\/td>\n

\n

98.61%<\/p>\n<\/td>\n<\/tr>\n

\n

3<\/p>\n<\/td>\n

\n

N2<\/p>\n<\/td>\n

\n

0.994<\/p>\n<\/td>\n

\n

99.4%<\/p>\n<\/td>\n<\/tr>\n

\n

4<\/p>\n<\/td>\n

\n

AR<\/p>\n<\/td>\n

\n

1.4066<\/p>\n<\/td>\n

\n

140.66%<\/p>\n<\/td>\n<\/tr>\n

\n

5<\/p>\n<\/td>\n

\n

NO<\/p>\n<\/td>\n

\n

0.9702<\/p>\n<\/td>\n

\n

97.02%<\/p>\n<\/td>\n<\/tr>\n

\n

6<\/p>\n<\/td>\n

\n

NO2<\/p>\n<\/td>\n

\n

0.7366<\/p>\n<\/td>\n

\n

73.66%<\/p>\n<\/td>\n<\/tr>\n

\n

7<\/p>\n<\/td>\n

\n

CO2<\/p>\n<\/td>\n

\n

0.7326<\/p>\n<\/td>\n

\n

73.26%<\/p>\n<\/td>\n<\/tr>\n

\n

8<\/p>\n<\/td>\n

\n

CH4<\/p>\n<\/td>\n

\n

0.7147<\/p>\n<\/td>\n

\n

71.47%<\/p>\n<\/td>\n<\/tr>\n

\n

9<\/p>\n<\/td>\n

\n

C2H6<\/p>\n<\/td>\n

\n

0.4781<\/p>\n<\/td>\n

\n

47.81%<\/p>\n<\/td>\n<\/tr>\n

\n

10<\/p>\n<\/td>\n

\n

C3H8<\/p>\n<\/td>\n

\n

0.3459<\/p>\n<\/td>\n

\n

34.59%<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

technical parameters<\/h4>\n\n\n\n\n\n\n\n\n
Measurement accuracy<\/td>\n\u00b1(1.5+0.2FS)%<\/td>\npower supply<\/td>\nDC15-24V\/100mA<\/td>\n<\/tr>\n
Response time<\/td>\n50-1000 ms<\/td>\nOutput method<\/td>\n4-20mA, pulse (optional)<\/td>\n<\/tr>\n
Zero drift<\/td>\n\u00b120mV<\/td>\nDisplay Format<\/td>\nInstantaneous flow, cumulative flow<\/td>\n<\/tr>\n
Operating temperature<\/td>\n-10~55\u2103<\/td>\nOperating humidity<\/td>\n<95%RH (no frost, no ice)<\/td>\n<\/tr>\n
Storage temperature<\/td>\n-10~65\u2103<\/td>\nCommunication<\/td>\nRS485 (Modbus RTU protocol)<\/td>\n<\/tr>\n
Work Pressure<\/td>\n\u22641.6MPa<\/td>\nCalibration medium<\/td>\nAir\uff0820\u2103\uff0c101.325kPa\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Note: The above data are measured at 20\u2103, 101.32kPa, dry air<\/p>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

Product features: \u2605 MEMS sensor, fast response speed; \u2605 Stable zero point, high precision and good repeatability; \u2605 Wide range ratio, optional flow range; \u2605 Optional display direction (0\u00b0, 90\u00b0, 180\u00b0, 270\u00b0); \u2605 Multiple signal outputs are optional; \u2605 Standard mechanical interface is optional;   Product features:   Display S-without display, D with display Pipe […]<\/p>","protected":false},"author":1,"featured_media":7043,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[199,147],"tags":[],"class_list":["post-6221","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thermal-mass-flow-meter-recommended-products","category-thermal-mass-flow-meter"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.inst-tech.net\/ar\/wp-json\/wp\/v2\/posts\/6221","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.inst-tech.net\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.inst-tech.net\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.inst-tech.net\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.inst-tech.net\/ar\/wp-json\/wp\/v2\/comments?post=6221"}],"version-history":[{"count":3,"href":"https:\/\/www.inst-tech.net\/ar\/wp-json\/wp\/v2\/posts\/6221\/revisions"}],"predecessor-version":[{"id":6233,"href":"https:\/\/www.inst-tech.net\/ar\/wp-json\/wp\/v2\/posts\/6221\/revisions\/6233"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.inst-tech.net\/ar\/wp-json\/wp\/v2\/media\/7043"}],"wp:attachment":[{"href":"https:\/\/www.inst-tech.net\/ar\/wp-json\/wp\/v2\/media?parent=6221"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.inst-tech.net\/ar\/wp-json\/wp\/v2\/categories?post=6221"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.inst-tech.net\/ar\/wp-json\/wp\/v2\/tags?post=6221"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}