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Mass flow meters and Controllers
- Small Karman Vortex Flow Meter
FM31(TEFLON/PFA) SERIES - The Karman vortex flow meter products
The KOFLOC Karman Vortex Flow Meter FM31 SERIES is a small Karman flow meter for measuring ultra pure water, designed with focus on reliability, durability and simplicity.
KOFLOC MFC FM31 SERIES
Quick Review
•What is Karman Vortex?
When an obstruction is placed in the flow of fluids, swirling vortices are formed. This repeating pattern of vortices is named Von Karman vortex street, in honor of the physicist Theodore von Kármán. Under set conditions, the number of vortices formed inside a tube is proportional to the flow of fluids running through that tube. By counting the number of vortices, one can identify the flow quantity.
•Simple Construction
The KOFLOC Karman Vortex Flow Meter FM31 SERIES is small, light and simple in construction without weighing only 205 g, or less. It is highly reliable in measuring small flows of numerous types of liquids including pure water, basic and acidic mediums.
• KOFLOC Dependability
KOFLOC has 60 years of experience in manufacturing precision flow instruments. KOFLOC products, both standard and off-catalog custom items are well received throughout Japan as the name that manifests confidence. KOFLOC, the fluid expert, is the name professionals trust in precision control of minute flow.
•Reliability
The KOFLOC Karman Vortex Flow Meter FM31 SERIES has no moving parts, making it highly durable and reliable. There is also no error induced by directional orientation and pressure loss is minimal.
•Isolated Sensor
The KOFLOC Karman Vortex Flow Meter FM31 SERIES has a non-wetted flow sensing element that is isolated from the flow of liquids, making it ideal for process monitoring using many types of liquids.
• All Teflon® Construction
The wetted parts of KOFLOC Karman Vortex Flow Meter FM31 SERIES are all Teflon® and this flow meter does not require o-rings, making it an ideal choice for ultra pure water applications such as semiconductor processes.
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•What is Karman Vortex?
When an obstruction is placed in the flow of fluids, swirling vortices are formed. This repeating pattern of vortices is named Von Karman vortex street, in honor of the physicist Theodore von Kármán. Under set conditions, the number of vortices formed inside a tube is proportional to the flow of fluids running through that tube. By counting the number of vortices, one can identify the flow quantity.
•Simple Construction
The KOFLOC Karman Vortex Flow Meter FM31 SERIES is small, light and simple in construction without weighing only 205 g, or less. It is highly reliable in measuring small flows of numerous types of liquids including pure water, basic and acidic mediums.
• KOFLOC Dependability
KOFLOC has 60 years of experience in manufacturing precision flow instruments. KOFLOC products, both standard and off-catalog custom items are well received throughout Japan as the name that manifests confidence. KOFLOC, the fluid expert, is the name professionals trust in precision control of minute flow.
•Reliability
The KOFLOC Karman Vortex Flow Meter FM31 SERIES has no moving parts, making it highly durable and reliable. There is also no error induced by directional orientation and pressure loss is minimal.
•Isolated Sensor
The KOFLOC Karman Vortex Flow Meter FM31 SERIES has a non-wetted flow sensing element that is isolated from the flow of liquids, making it ideal for process monitoring using many types of liquids.
• All Teflon® Construction
The wetted parts of KOFLOC Karman Vortex Flow Meter FM31 SERIES are all Teflon® and this flow meter does not require o-rings, making it an ideal choice for ultra pure water applications such as semiconductor processes.
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Features
Rohs compliance
CE mark
PPS resin
Easy maintenance
Compact & light
Acidic/Basic medium
Minimum pressure loss
Corrosive resistance
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CE mark
PPS resin
Easy maintenance
Compact & light
Acidic/Basic medium
Minimum pressure loss
Corrosive resistance
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Applications
FA instruments
Semiconductor manufacturing
LCD
Housing material production
Medicine production
Chemical industry
Biomedical applications
Environment systems
Food processing
Agricultural/Botanical applications
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Semiconductor manufacturing
LCD
Housing material production
Medicine production
Chemical industry
Biomedical applications
Environment systems
Food processing
Agricultural/Botanical applications
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Standard Specifications
| Item | FM3101 | FM3102 | FM3103 | FM3104 | |
|---|---|---|---|---|---|
| Flow range(L/min) | 0.4~4 | 2~20 | 5~50 | 10~100 | |
| Connection | 3/8" Pipe end | 1/2" Pipe end | 3/4" Pipe end | 1" Pipe end | |
| Fluids for measurement | Ultrapure water,chemicals,and other liquids | ||||
| Measuring accuracy | ±3.0%+1 digit | ||||
| Repeatability | Within±0.5%F.S. | ||||
| Liquid temperature range | 0 to 90°C(No bedewing,no boiling) | ||||
| Amb.temperature range | 0~50°C | ||||
| Outputs | With indicator | LED display in 3 digits | |||
| Current output:4-20mA(linear) | |||||
| Alarm output:Open collector(2 LEDs;80 mA,30VDC max.) | |||||
| W/o indicator | Current output:4-20mA(linear) | ||||
| Pulse output:Open collector(10 mA,30 VDC max.0) | |||||
| Supply voltage | 12~24VDC | ||||
| Materials | Body | All Teflon(PFA),without O-rings | |||
| Cover | Polybutylene terephthalate(PBT) resin | ||||
| Cable | 2 meters long;Conductor:Tinned bare annealed copper wire;Sheath:Heat-/cold-resistant polyvinyl chloride(PVC) | ||||
About this commodity
