Small Karman Vortex
Flow Meter For Liquids
FM0101/0102/0103/0105
SERIES
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
body material,all models of the series offer superior reliability and
durability.
Features
- Simple design that
minimizes a dead space
- Measurements of very
small flows available(up to 0.5L/min)
- Use of PPS resin has
achieved a small,lightweight and rigid
- The sensor can be used
for pure water or deionyzed water.
- These models are in the
process of aplication for CE Marking
Standard Specifications
1.Dimension(a) : - FM0101 =
17.8
- FM0102 =
17.8
- FM0103 =
17.8
- FM0105 = 32.5
2.Dimension(L) : - FM0101 =
80.6
- FM0102 =
80.0
- FM0103 =
80.0
- FM0105 = 110.0
3.Connection(X) : - FM0101
= R3/8
- FM0102
= R1/2
- FM0103
= R1/2
- FM0105
= 25A
4.Flow range : - FM0101 =
0.5~4L/min
- FM0102 =
2~16L/min
- FM0103 =
4~40L/min
- FM0105 = 10~150L/min
5.Fluids for measurement :
Cooling water,cleaning water,etc.
6.Measuring accuracy :
Within±3.0%F.S.
7.Repeatability :
Within±0.5%F.S.
8.Outputs : - S
Type:4~20mA
- P Type:Pulse(Open collector)(For w/o
indicator only)
- D Type:With indicator
9.Supply Voltage : 12~24VDC
10.Liquid temperature range
: 0~70°C
11.Proof pressure : 1Mpa
12.Amb.temperature range :
0~50°C
13.Amb.humidity range :
5~90%RH
14.Applicable
cleanliness/waterproofing standards : IP64(Splashproof construction per JIS C
0920)
15.Material for wetted part
: PPS with 30% glass mixture ; PPS w/o glass mixture
16.Cable length : - W/o
indicator:2 meters long;terminated/pretinned(presoldered)
- With indicator:3
meters long;terminated/pretinned(presoldered)
17.Weight : - with
indicator 85 g (sensor)
- with indicator 165g(Sensor unit)
- With indicator:100
grams(Sensor unit)
- with indicator 205g(Sensor unit)
Principle Measurement
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.
