MODEL31 (TEFLON®/PFA) SERIES
FM31 Series Karman Vortex Flow Meter employs the following principle for measurement of flows; When a columnar object(object that generates vortices) is placed in the flow path of a fluid,regular channels of vortices,called Karman vortex channels,are generated at the back of the object.Since the frequency of a vortex generated is linearly proportional to the flow velocity within a given range,the flow amount can be measured by counting the number of vortices.When the frequency of each vortex generated is detected by the incorporated vortex detector(piezoelectric device),the signal processing circuit outputs a signal which is linearly proportional to volume flow.
Features
-Because of no moving part,the meter has superior reliability and durability and no error in mounting position is produced.
-Simple construction(its flow path of fluid contains a columnar object and a vortex detector only) ensures low pressure loss and low liquid leak. In addition,the detector does not get into contact with the fluid running through the path,thefore,it is ideal for process monitoring of various liquids.
-Two types of particle-free body materials(PPS and PFA) are available for choice according to your needs.
-Global specifications(Certification for CE Marking already acquired)
-Since Teflon is the material for the entire wetted part and no O-ring is in use,the FM31 Series Karman Vortex Flow Meter is optimum for monitoring liquid flows in the manufacturing process of semiconductors.
Standard Specifications
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Item |
FM3101 |
FM3102 |
FM3103 |
FM3104 |
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Flow range(L/min) |
0.4~4 |
2~20 |
5~50 |
10~100 |
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Connection |
3/8" |
1/2" |
3/4" |
1" |
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Fluids for measurement |
Ultrapure water,chemicals,and other liquids |
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Measuring accuracy |
±3.0%+1 digit |
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Repeatability |
Within±0.5%F.S. |
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Liquid temperature range |
0 to 90‹C(No bedewing,no boiling) |
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Amb.temperature range |
0~50°C |
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Outputs |
With indicator |
LED display in 3 digits |
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Current output:4-20mA(linear) |
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W/o indicator |
Alarm output:Open collector(2 LEDs;80 mA,30VDC max.) |
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Current output:4-20mA(linear) |
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Pulse output:Open collector(10 mA,30 VDC max.0) |
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Supply voltage |
12~24VDC |
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Materials |
Body |
All Teflon(PFA),without O-rings |
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Cover |
Polybutylene terephthalate(PBT) resin |
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Cable |
2 meters long;Conductor:Tinned bare annealed copper wire;Sheath:Heat-/cold-resistant polyvinyl chloride(PVC) |
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Principle of Meansurement
When a columnar object ( object that generates vortices) is placed in the flow path aof a fluid, regulecalled karman vortex channels, are generated at the back of the object. Since the frequency of a vortex generated is linearly proportional to the flow velocity within a given range, the flow amount can be measuredby counting the number of vortices.
These series models make use of the principle. When the frequency of each vortex generated is detected by incorporated vortex detector (piezoelectric device), the signal processing circuit outputs a signal which is linearly propotional to volume flow.
Untuk informasi lebih lanjut silakan hubungi :
PT. Wiratama Mitra Abadi
Jl. Dewi Kunti II No. 2 Kalimalang - Bekasi
Kantor Cabang :
Perumnas Teluk Jambe Block C No. 53
Phone : 085 100 711 033, 085 105 062 090
Mobile : 6287780553773, 62812 8208 4779
Email : sales@wmablog.com
Website : www.flowmasonic.com
Blog : www.wmablog.com
Skype : Wiratama Mitra Abadi
WA : 081218618184