KITA KFP02A Series Manuale utente
INSTRUCTION MANUAL
DIGITAL FLOW AND PRESSURE SENSOR
@2022 KITA Sensor Tech. Co., LTD. URL http://www.kita.com.tw
KFP02A Series
KFP02A Series Instruction Manual
@2022 KITA Sensor Tech. Co., LTD. URL http://www.kita.com.tw
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Product Safety InstructionsProduct Safety Instructions
■This section indicate the levels of risks with the labels of Danger, Warning and Caution.
Danger Danger indicates high level of risk, will lead to fatal or serious injuries if
not avoided.
Warning Warning indicates medium level of risk, it might cause death or serious injuries.
Caution Caution indicates low level of risk, it might result in minor injuries, such as scald,
electric shock, etc. and the product, equipment and machines might be damaged.
Warning
■ Precautions for usePrecautions for use
➀Operated within the specified voltage.Operated within the specified voltage.
Malfunction or damaged product, electric shock or fire may
be resulted by exceeding the specified voltage range.
➁Do not exceed the maximum load current.Do not exceed the maximum load current.
It may damage the product.
➂Do not use any load that generates surges.Do not use any load that generates surges.
Surge protection is present but applying surge voltage
repeatedly will ultimately damage the product.
When using with inductive load (such as relay or solenoid),
please install a flyback diode across the load (polarity must
be observed).
➃Observed the internal voltage drop.Observed the internal voltage drop.
When used at a specified voltage, if the sensor is functional
but the load does not work, please check if the operating
voltage of the load meets the following formula.
➄Do not operate the product outside the specifications.Do not operate the product outside the specifications.
The sensor will be damaged by exceeding the flow rate and
working pressure.
➅Do not use flammable fluids and/or permeable fluids.Do not use flammable fluids and/or permeable fluids.
They may cause fire, explosion or corrosion.
■ Working fluid and working environmentWorking fluid and working environment
Power supply –
voltage
Internal voltage >
drop of sensor
Minimum operating
voltage of load
Do not use in an explosive gas atmosphere.Do not use in an explosive gas atmosphere.
The sensor does not have explosion-proof structure, fire,
explosion or corrosion can result.
Do not use near a surge voltage generated area.Do not use near a surge voltage generated area.
Solenoid lifters, high frequency induction furnaces and
motors, etc. can generate high surge voltages, if using near
the sensor will cause the internal circuit components to
deteriorate and cause damages.
Sensors can not withstand lightning strikes.Sensors can not withstand lightning strikes.
The product is CE compliant, but can not resist surge voltage
of lightning strikes, take measures to avoid lightening strikes
in the system.
Do not use in an environment where sensors could beDo not use in an environment where sensors could be
splashed by water or oil.splashed by water or oil.
Enclosure rating is IP40, please avoid water or oil splashed
environment to prevent adversely effects.
Do not use in an environment subject to largeDo not use in an environment subject to large
temperature cycling.temperature cycling.
Internal components of the sensor will be affected adversely
by large heating/cooling cycles other than ordinary changes
in temperature.
Do not mount the product in locations where it isDo not mount the product in locations where it is
exposed to radiant heat.exposed to radiant heat.
This could result in damage and/or malfunction.
➁
➂
➃
➄
➅
➀
KFP02A Series Instruction Manual
@2022 KITA Sensor Tech. Co., LTD. URL http://www.kita.com.tw
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Warning
Caution
■ Wiring PrecautionsWiring Precautions
■ Installation PrecautionsInstallation Precautions
■ Installation PrecautionsInstallation Precautions
■ Maintenance PrecautionsMaintenance Precautions
■ DisposalDisposal
■ Other PrecautionsOther Precautions
Check wire color and terminal number when wiring.Check wire color and terminal number when wiring.
Incorrect wiring can cause permanent damages to the
sensor, check wire color and terminal number against the
manual before wiring.
Avoid repeatedly bending or stretching the lead wire.Avoid repeatedly bending or stretching the lead wire.
It can cause damage to the sheath, or breakage of the wire.
Confirm wiring insulationConfirm wiring insulation
Please avoid poor insulations (and interference from another
circuit, poor insulation between terminals, etc.) it can lead to
over current being applied to the product, causing damage.
Do not route wires and cables together with power orDo not route wires and cables together with power or
high voltage cables.high voltage cables.
The product may malfunction due to interference or noise
and surge voltage from power and high voltage cables.
Do not short-circuit the load.Do not short-circuit the load.
When the load is short-circuited, an error will be displayed.
But excess current may cause damage to the sensor.
Do not connect wire when the power is on.Do not connect wire when the power is on.
It may cause damages to the sensors/equipment/machines.
RS485 products must be connected theRS485 products must be connected the
communication wire first.communication wire first.
Wiring for RS485 MODBUS : Please connect RS485 (B+) or
(A-) before connecting power supply to avoid short circuit to
damage to product.
Please follow the specified tightening torque.Please follow the specified tightening torque.
Over tighten will damage the product.
Do not mount the sensor in a place that will be usedDo not mount the sensor in a place that will be used
as a foothold.as a foothold.
The product may damage if sit or step on it accidentally.
While installing the KFP02A to the pipe, please applyWhile installing the KFP02A to the pipe, please apply
I.D. 9 mm or more air tube.I.D. 9 mm or more air tube.
Ensure the flow direction of the fluid.Ensure the flow direction of the fluid.
Please follow the flow direction indicator for installation and
piping.
Flush out all dirt and dust by air blow before connectFlush out all dirt and dust by air blow before connect
the piping to the sensor.the piping to the sensor.
Do not drop or hit.Do not drop or hit.
When installation, do not drop, hit or apply excessive shock
(100m/s2). Internal damage can cause malfunction even if
the housing appears to be undamaged.
Do not install multiple products in close proximity.Do not install multiple products in close proximity.
The heat generated from each product could cause the
temperature to rise and change the characteristics of product
or deterioration of the plastic parts. Please set the products
10mm apart from each other.
Hold the sensor body when installing.Hold the sensor body when installing.
The tensile strength of the cable is 24.5 N and apply
excessive pulling force can cause damage to the sensor.
Do not insert a stick or wire into the piping ports.Do not insert a stick or wire into the piping ports.
Do not touch the terminals or connectors when powerDo not touch the terminals or connectors when power
is on.is on.
Sensors at end-of-life must be disposed of inSensors at end-of-life must be disposed of in
accordance with E-Waste regulations of the country/accordance with E-Waste regulations of the country/
region, NOT disposed of with regular garbage.region, NOT disposed of with regular garbage.
After power is supplied, the output will remain off untilAfter power is supplied, the output will remain off until
the display is turned on. Please operate the sensorthe display is turned on. Please operate the sensor
after the value is shown.after the value is shown.
Stop the control systems before perform settingStop the control systems before perform setting
changes.changes.
During the initial flow and pressure setting, the product will
switch the output according to the existing settings until the
changes are complete.
➁
➂
➃
➄
➅
➀
➆
➁
➂
➃
➄
➀
➀
➁
➀
➁
➂
➀
➁
➀
KFP02A Series Instruction Manual
@2022 KITA Sensor Tech. Co., LTD. URL http://www.kita.com.tw
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Disclaimer
➀
➂
➁
Our warranty applies solely to our product, not to any other damages and injuries which occur by earthquakes, fires,Our warranty applies solely to our product, not to any other damages and injuries which occur by earthquakes, fires,
the acts by third party, other matters, acts intentionally, acts accidentally, misuse, or other abnormal conditions thatthe acts by third party, other matters, acts intentionally, acts accidentally, misuse, or other abnormal conditions that
are not the responsible of KITA.are not the responsible of KITA.
Our warranty applies solely to our product, not to any other additional damages (the loses of business profits,Our warranty applies solely to our product, not to any other additional damages (the loses of business profits,
business interruption, etc.) incurred due to using or misusing the product.business interruption, etc.) incurred due to using or misusing the product.
Our warranty excludes any injuries and damages happened by using the product beyond the specified range ofOur warranty excludes any injuries and damages happened by using the product beyond the specified range of
catalog or/and not following the instruction manual.catalog or/and not following the instruction manual.
Warning
■ FluidFluid
Check the regulator and flow adjustment valve before introducing the fluid.Check the regulator and flow adjustment valve before introducing the fluid.
If the pressure or flow rate exceeded the specified range, the sensing element may be damaged.
The sensing element cannot measure properly if foreign matter adheres to it.The sensing element cannot measure properly if foreign matter adheres to it.
On the inlet side, be sure to install an air filter below the filtration level of 10um.On the inlet side, be sure to install an air filter below the filtration level of 10um.
Recommended Equipments and InstallationRecommended Equipments and Installation
※NOTENOTE ※
Please install a throttle valve on the outlet side of the sensor to prevent errors caused by unstable flow.
Inlet Outlet
Flow Sensor
Pressure Sensor
KFP02A Series
Air Source Air Dryer Filter Regulator Micro Mist Separator
(Oil Mist Filiter)
➁
➂
➃
➀
Throttle Valve
KFP02A Series Instruction Manual
@2022 KITA Sensor Tech. Co., LTD. URL http://www.kita.com.tw
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Contents
Installation Instructions 5
1.1 Piping ........................................................................................................ 5
1.2 Mounting bracket .................................................................................... 6
1.3 Wiring ........................................................................................................ 7
1.3.1 NPN output, Analog output and external input ............................ 7
1.3.2 PNP output, Analog output and external input ............................ 8
1.3.3 NPN output, RS-485 Modbus ....................................................... 9
1.3.4 PNP output, RS-485 Modbus ........................................................ 9
How to Use 10
2.1 Names and Functions of Individual Parts ...................................... 10
2.2 Functions Instructions ........................................................................ 11
2.3 Operation Setting ................................................................................. 13
Modbus RTU Instruction 49
Error Code Instruction 51
Specifications 52
Pressure Loss Characteristics 53
Thermal Mass Principles of Flow Sensor
53
Ordering Information 54
Dimensions 55
Internal Structure 57
1
2
3
4
5
6
7
8
9
10
KFP02A Series Instruction Manual
@2022 KITA Sensor Tech. Co., LTD. URL http://www.kita.com.tw
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Install the pipe by following the
arrow indication that shows the
air flow direction on the product.
Use straight piping 8cm or longer
(I.D. 9 mm or more) to connect the
Piping Port (Inlet side). If straight
piping is not installed, the accuracy
may vary by ± 2% F.S..
Avoid sudden changes in the piping
size on the inlet side of the product.
Do not release the outlet side
piping port of the product directly to
the atmosphere without the piping
connected.
※ Straight Piping: The pipe is without
bending and the cross sectional areas of
the pipe keeps the same.
Using on other parts of the product with a wrench
may damage the product.
When piping with metallic area, please refer to the
applicable torque below.
Over torquing may be damaged the product.
When insufficient torque, the connection may loosen
to cause air leakage.
After installation completed, please make gas and
power on and operate properly and test leakage to
verify the installation correct.
Installation
1InstallationInstallation
1.1 Piping
Flow
direction
Piping Port
(Inlet side)
straight piping 8cm
or longer
(I.D. 9 mm or more)
Piping Port
(Outlet side)
Caution
Piping Specification Required Torque
Rc1/2", G1/2"
28 ~ 30 N.m
Rc3/4", G3/4"
KFP02A Series Instruction Manual
@2022 KITA Sensor Tech. Co., LTD. URL http://www.kita.com.tw
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1.2 Mounting Bracket / Optional Parts
The LCD display may be difficult to see at certain angles.
The sensor can be installed horizontally or vertically, but the flow rates may
change because of the installation way of the product or piping.
The tightening torque for screws should be under 0.3 ±0.1 N.m.
Installation
Mounting screw
M3 x 0.5P x 5L
Mounting screw
KFP02A Series Instruction Manual
@2022 KITA Sensor Tech. Co., LTD. URL http://www.kita.com.tw
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1.3 Wiring Diagrams
1.3.1 NPN Output, Analog Output and External Input
Installation
● NPN Output / Analog Voltage Output / External Input
● NPN Output / Analog Current Output / External Input
Main CircuitMain Circuit
1
2
3
4
5
6
Brown (Power supply +)
Brown (Power supply +)
Blue (Power supply –)
Blue (Power supply –)
Black (Output 1)
Black (Output 1)
White (Output 2)
White (Output 2)
Yellow (External input)
Yellow
(External input)
1kΩOrange
(Analog output)
Orange
(Analog output)
1
2
3
4
5
6
Load
Load
Load
Load
Load
Brown
Orange
Yellow
Black
White
Blue
Pin No. Line color Content
1 Brown Power supply (DC 12 to 24V DC)
4 Black Output 1 (Max. load current：125mA)
5 White Output 2 (Max. load current：125mA)
3 Yellow External input
2 Orange Analog voltage output：1 ~ 5V
Analog current output：4 ~ 20mA
6 Blue 0V (GND)
1
2
3
4
5
6
KFP02A Series Instruction Manual
@2022 KITA Sensor Tech. Co., LTD. URL http://www.kita.com.tw
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1.3.2 PNP Output, Analog Output and External Input
Installation
● PNP Output / Analog Voltage Output / External Input
● PNP Output / Analog Current Output / External Input
1
2
3
4
5
6
Brown (Power supply +)
Brown (Power supply +)
Blue (Power supply –)
Blue (Power supply –)
Black (Output 1)
White (Output 2)
Black (Output 1)
White (Output 2)
Yellow (External input)
Yellow
(External input)
Orange
(Analog output)
Orange
(Analog output)
1
2
3
4
5
6
1kΩ
Main CircuitMain Circuit
Load
Load
Load
Load
Load
Brown
Orange
Yellow
Black
White
Blue
Pin No. Line color Content
1 Brown Power supply (DC 12 to 24V DC)
4 Black Output 1 (Max. load current：125mA)
5 White Output 2 (Max. load current：125mA)
3 Yellow External input
2 Orange Analog voltage output：1 ~ 5V
Analog current output：4 ~ 20mA
6 Blue 0V (GND)
1
2
3
4
5
6
KFP02A Series Instruction Manual
@2022 KITA Sensor Tech. Co., LTD. URL http://www.kita.com.tw
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1.3.3 NPN Output, RS-485 Modbus
1.3.4 PNP Output, RS-485 Modbus
Main Circuit
Brown (Power supply +)
Blue (Power supply –)
Black (Output 1)
White (Output 2)
Yellow
RS-485 (A-)
Orange
RS-485 (B+)
1
2
3
4
5
6
Load
Load
1
2
3
4
5
6
Brown (Power supply +)
Blue (Power supply –)
Black (Output 1)
White (Output 2)
Yellow
RS-485 (A-)
Orange
RS-485 (B+)
Main Circuit
Load
Load
Brown
Orange
Yellow
Black
White
Blue
Pin No. Line color Content
1 Brown Power supply (DC 12 to 24V DC)
4 Black Output 1 (Max. load current：125mA)
5 White Output 2 (Max. load current：125mA)
3 Yellow RS-485 (A-)
2 Orange RS-485 (B+)
6 Blue 0V (GND)
1
2
3
4
5
6
Installation
Indice
