KOFLOC’s Karman Vortex Flow Meter FM Series provides an ideal tool for measuring and monitoring liquid flows, including cooling water and cleaning water. Since PPS resin is used for the body material, all models of the series offer superior reliability and durability.
Model | FM0101 | FM0102 | FM0103 | FM0105 |
Dimension (a) | 17.08 | 17.05 | 17.05 | 32.05.00 |
Dimension (L) | 80.06.00 | 80 | 80 | 110 |
Connection (X) | R3/8 | R1/2 | R1/2 | 25A |
Flowrange | 0.5-4 L/min | 2-16 L/min | 4-40 L/min | 10-150 L/min |
Fluids | Cooling | |||
for measurement | water, cleaning water, etc. | |||
Measuring accuracy | Within ±3.0% F.S | |||
Repeatability | Within ±0.5% F.S | |||
Outputs | S Type: | |||
4-20mA | ||||
P-Type: | ||||
Pulse (Open collector) (For w/o indicator only) | ||||
D Type: | ||||
With indicator | ||||
Supply voltage | 12-24VDC | |||
Liquid temperature range | 0-70 Celcius | |||
Proof pressure | 1MPa | |||
Amb. temperature range | 0 – 50 Celcius | |||
Amb. humidity range | 5-90%RH | |||
Applicable cleanliness/ waterproofing standards | IP64 (Splashproof construction per JIS C 0920) | |||
Material for wetted part | PPS with 30% glass mixture | PPS w/o glass mixture | ||
Cable length | W/o indicator: 2 meters long; terminated/pretended (pre-soldered) | |||
With indicator: 3 meters long; terminated/pretended (pre-soldered) | ||||
Weight | W/o indicator: 85 g (Sensor unit) | 165 g (Sensor unit) | ||
With indicator: 100 g (Sensor unit) | 205 g (Sensor unit) |
When a columnar object (an object that generates vortices) is placed in the flow path a of fluid, regulated Karman vortex channels, is 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.
These series models make use of the principle. When the frequency of each vortex generated is detected by an incorporated vortex detector (piezoelectric device), the signal processing circuit outputs a signal which is linearly proportional to volume flow.
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