Kofloc FM01 Series User manual

MJ400080F1
Small Karman Vortex Flow Meter
FM01 Series
Instruction Manual

MJ400080F1
⚫Checking the product
FM0101/0102/0103/0105/0107 is shipped after thoroughly inspected by our company. Be sure to check
the following points:
1. Visually check the unit for any damage.
2. You will see type name, basic specifications, and product No. marked on the nameplate seal on the
case top.
Confirm that the specifications are as ordered.
◼Cautions in handling
I. Storing
(1) Select a storage place to satisfy the following conditions.
•Place not exposed to rain and water.
•Place free from vibration and impact.
•Temperature and humidity should be as follows. Preferably ordinary temperature (25C,
65%RH).
Temperature: -10 to 60C
Humidity: 5 to 95%RH
•Place free from corrosive gas.
(2) The product should be kept in the same package as shipped from our company.
(3) If measured fluid remains in the tube hole after used once, it should be cleaned completely
before storing.
II. Installation place
Pay attention to the following points so that this flow meter can be used safely and accurately over a
long period of time.
(1) The applicable fluid of this instrument should be liquid, and industrial water in conformity with
pure water/tap water.
(2) Avoid the use at a place subject to direct sunlight or radiant heat. If it must be used at such a
place, sufficient shielding/insulating should be done.
(3) Avoid installation under corrosive gas atmosphere.
(4) This instrument is of splash proof structure (JIS C 0920) but rain or water must be avoided.
(5) It should be installed at a place with less vibration or impact.
(6) Near electromagnetic noise source, malfunction may occur, and it should be installed away from
it or magnetic shield should be provided.
(7) Secure a long straight tube length as much as possible to avoid the effect of turbulent or
pulsating flow.
Recommended value of the straight tube length is 10D for the upstream portion and 5D or more
for the downstream portion.
D = diameter of piping
(8) The flow direction should be in agreement with the arrow mark direction of the main body
portion.

MJ400080F1
III. Cautions
(1) Avoid water pressure exceeding the specified value and cleaning with reverse flow, which will
damage the sensor portion and cause failure.
(2) If measured fluid in the tube hole is frozen, the sensor portion may be damaged. If there is the
possibility of freezing, take heat insulation measures.
(3) FM01 series including threaded portion is made of resin. Excessive tightening when fitting and
unnecessary external force must be avoided.
(4) Do not hold the output cable when carrying the product. The soldered connection of the cable
and electronic circuit may be damaged.
(5) The circuit portion must not be subjected to dew condensation.
IV. Insulation resistance/dielectric strength test
The insulation resistance/dielectric strength test must not be conducted because there is the
possibility of the electronic circuit being damaged.
■Warranty
1. The contents of warranty
①Warranty period
The warrant period shall be one year after the shipment.
②Warranty range
If a malfunction of the product you purchased occurs because of our responsible reasons, offer of
substitute or it will be charge-free repaired in our factory. But if a malfunction of the machine occurs
due to the following reasons, even within the warrant period, it becomes the outside for a warranty.
(a) Malfunctions due to erroneous applications, repairs or remodeling.
(Including the case in which the manufacturing specification differs from the application conditions.)
(b) Malfunctions due to the falling after the purchase.
(c) Malfunctions caused by natural disasters such as fire, earthquake, water disaster and lightning
stoke, or riots or wars.
(d) Malfunctions caused by mixing-in of foreign matters out of the piping.
(e) Malfunctions caused by the peculiar problems due to combinations with other built in equipment.
In addition, a warranty here means the warranty of the product simple substance of our company. So
the damage induced by failure of the products of our company shall be eliminated from the object of
warranty.

MJ400080F1
1. Outline
FM01 series vortex flow meter measures flow velocity (vortex) of liquid (water) running through the tube
hole, detects vortex frequency proportional to the velocity, and outputs 4 to 20mA through the processing
circuit.
It is a small plastic vortex flow meter, and the
velocity and flow rate in a wide range of use, the
output signal is 0.5 to 4L/min for FM0101, 2 to
16L/min for FM0102, 4 to 40L/min for FM0103, 10
to 150L/min for FM0105, and 25 to 250L/min for
FM0107.
This instrument has no movable portion, pressure
loss is small, output signal is proportional to the
volume flow rate, and it is superior in linearity and
reproducibility.
For the main body, PPS resin (polyphenylene
sulfide) is used to secure mechanical strength and
high reliability. It has a simple structure with less
liquid accumulation, thus realizing maintenance-free
without necessity of periodical
checking/maintenance.
Vortex generator
Measuring
principle
Vortex detector
Karman’s vortex
Piezoelectric element

MJ400080F1
2. Standard Specifications
◼Main specifications
Item
Specification
Current
Pulse
Indicator
Fluid
Pure water, industrial water (in conformity with tap water)
Material
Body: PPS, Cover: PBT
Output cord: conductor = tinned bare annealed copper wire,
sheath = heat-resistant/cold-resistant PVC
Accuracy
±3％F.S.
±3％F.S.
Current accuracy: ±3％F.S.
Indication accuracy: ±3％F.S.
±1digit
Reproducibility
±0.5％
Maximum working output
1MPa（10kgf/㎠）
Fluid temperature
0-70℃
Ambient temperature
0-50℃
Supply voltage
12VDC (or 24VDC)
Output
4-20ｍADC
Open collector
MAX.10mA/30V DC
FM0101: 800Hz@4L/m
FM0102: 800Hz@16L/m
FM0103: 584Hz＠40L/m
FM0105: 900Hz@150L/m
FM0107: 750Hz@250L/m
4-20ｍADC
Load resistance
0-250Ω(250 to 500Ωat 214VDC)
Time constant
1 second
Waterproofing
Splash-proofing structure (JIS C0920)
Cable length
2m terminated
(pre-tinning)
2m terminated
(pre-tinning)
3m terminated
(pre-tinning)
Weight
60g (main body)
165g (main body)
60g (main body)
165g (main body)
100g (main body)
205g (main body)
Caution in using
No excessive tightening torque should not be given to the main body and fitting screw because they are
made of resin.

MJ400080F1
❑Model and diameter , flow range, connection
MODEL
DIAMETER
FLOW RANGE
FITTINGS
ＦＭ０１０１
Ｌ
LOW FLOW：0.5～4 L/min
R3/8(PT3/8 MALE)
ＦＭ０１０２
Ｍ
MIDDLE FLOW：2～16 L/min
R1/2(PT1/2 MALE)
ＦＭ０１０３
Ｈ
LARGE FLOW：4～40 L/min
R1/2(PT1/2 MALE)
ＦＭ０１０５
Ｈ
LARGE FLOW：10～150 L/min
EQUAL TO ESLON UNION 25A
ＦＭ０１０７
Ｈ
LARGE FLOW：25～250 L/min
R1・1/4（PT1・1/4 MALE）
３．Connection

MJ400080F1
４．Outline
MODEL
DIMENSIONS
FITTINGS
a
L
X
FM0101
17.8
80.6
R3/8
FM0102
17.5
80.0
R1/2
FM0103
17.5
80.0
R1/2
FM0105
32.5
110.0
About 25A
FM0107
30.0
105.0
R1･1/4
Caution in use:
Please be careful not to increase excessive clamping torque
because the body and the mounting screws are made of regin.
12.5
a
45
a
L
30
X(Fitting)
53
40
Cable length; About 2000
12

MJ400080F1
５．Putout Property
22
20
18
16
14
12
10
8
6
4
0510 15 20 25 30 35 40 45
22
20
18
16
14
12
10
8
6
4
0246810 12 14 16 18
22
20
18
16
14
12
10
8
6
4
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
FM0101
FM0102
FM0103
Flow (L/min)
Flow (L/min)
Output current(mA)
FM0107
FM0105
Flow (L/min)
Flow (L/min)
22
20
18
16
14
12
10
8
6
4
010 30 50 70 90 110 130 150 170
22
20
18
16
14
12
10
8
6
4
040 70 100 130 160 190 220 250 280
Output current(mA)
Output current(mA)
Output current(mA)
Output current(mA)
Flow (L/min)

MJ400080F1
6. Alarm setting
For about 2 seconds
1-P: ON when flow rate becomes
higher than the set value
1-n: ON when flow rate becomes
lower than the set value
1-F: Normally OFF
2-P: ON when flow rate becomes
higher than the set value
2-n: ON when flow rate becomes
lower than the set value
2-F: Normally OFF
Press SET for about
2 seconds
Select mode
by pressing or 
Press SET
Set the set value
by pressing or 
Press SET
Select mode
by pressing or 
Press SET
Set the set value
by pressing or 
Press SET
(Setting example)
Press SET (setting)
Operate same for AL2
AL1 polarity setting mode
Measuring mode
AL1 polarity setting completed
AL1 set value setting mode
AL1 setting completed
AL2 polarity setting mode
AL2 polarity setting completed
AL2 set value setting mode
AL2 setting completed
Writing in EEPROM

MJ400080F1
7. Other settings
Press both SET and 
for about 2 seconds
Select and set GAL or L
by pressing or 
Press SET
Set the type by pressing
or 
Press SET
Set ammeter output value
when analog output is zero
by pressing or 
Press SET
Connect ammeter
(or corresponding
resistance/voltmeter)
to analog output line
Set ammeter output value
when analog output FS
by pressing or 
Press SET
Set to actual flow device
and supply 100% FS
corresponding flow
Set ammeter output value
when flow 100% FS
by pressing or 
Press SET
Flow unit setting mode
Measuring mode
Flow unit setting completed
Type setting mode
Type setting completed
Output zero setting mode
Output zero setting completed
Output span setting mode
Output span setting ended
Flow span setting mode
Flow span setting ended
Write in EEPROM

MJ400080F1
(1) Setting flow unit
Press for about
2 seconds
Press either one
Press either one
Press SET →setting
Alternately
switched
(In case of L/min)
(In case of gal/min)
(2) Setting of output zero
Set 4 (mA) by
pressing either one
Alternate indication
(Example)
In case of L range
* Supplying FS flow with
actual flow device
(3) Setting of output span
(4) Setting of flow span
Set 20 (mA) by
pressing either one
Set to actual flow (FS value)
by pressing either one.
Alternate indication
Alternate indication

MJ400080F1
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