FineTek EPF Series User manual

I
EPF Doppler Ultrasonic
Flowmeter
Operations Manual
FineTek Co.,Ltd.
No.16, Tzuchiang St., Tucheng Industrial Park, New Taipei City 23678
Tel：[phone] Fax：[phone]
Website：http://www.fine-tek.com E-mail:[email protected]
08-EPF-B1-KM,10/04/2023

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Contents
1. Operation manual use..................................................................................................3
2. Product warranty..........................................................................................................4
2.1 New product warranty...............................................................................................4
2.2 Repair warranty ........................................................................................................4
2.3 Service Network .......................................................................................................5
3. Product Inspection.......................................................................................................6
3.1 Product Check..........................................................................................................6
3.2 Safety Inspection......................................................................................................6
3.3 Handling and Carrying..............................................................................................6
4. Storage and Transportation Requirements................................................................7
4.1 Environmental Requirements ...................................................................................7
4.2 Handling Requirements............................................................................................7
5. Product Introduction....................................................................................................8
5.1 Features of the product.............................................................................................8
5.2 Working theory .........................................................................................................8
6. Specifications of the product ....................................................................................10
6.1 Specifications .........................................................................................................10
6.2 Outline dimensions.................................................................................................12
7. Wiring instructions.....................................................................................................13
7.1 Electrical specifications –DC .................................................................................13
7.1.1Instructions for wiring terminal..............................................................................13
7.2 Electrical specifications –AC..................................................................................14
7.2.1 Instructions for wiring terminal.............................................................................14
8. Installation instructions .............................................................................................15
8.1 Environmental safety..............................................................................................15
8.2 Circuit installation ...................................................................................................15
8.3 Cautions .................................................................................................................15
8.4 Cautions for power supply......................................................................................15
9. Transducer installation..............................................................................................16
9.1 Select the installation position ................................................................................16

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10. Description of panel functions................................................................................20
10.1 Description of display interface ............................................................................20
10.2 Description of push key........................................................................................20
10.3 Menu setting process instructions........................................................................20
10.4 Quick setup process.............................................................................................21
10.5 Description of parameter setting function.............................................................23
11. Error message and troubleshooting.......................................................................26
12. MODBUS Communication Protocol........................................................................29

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1. Operation manual use
Thank you for purchasing this FineTek product. This operation manual describes the
product features, operating principle, operation and maintenance methods, as well as
precautionary
measures that should be taken during the installation, operation or maintenance of this
product. This manual is designed to prevent dangerous situations that can result in damage
to the product or injury to an installer or operator.
➢Please read this operation manual completely and carefully before installing the
product.
➢Please contact FineTek if this operation manual does not answer your questions.
➢The content of this operation manual may be updated from time to time. Updates are
Maintained on the FineTek website www.fine-tek.com for your easy access.
➢Do not disassemble or attempt to repair the product as this will void the product
warranty.Please return the product to FineTek for repair and calibration if required.
➢This manual may utilize warning symbols. An explanation of these symbols is as
follows:
Danger→this symbol indicates an incorrect operation will result in major accidents
and death.
Note→this symbol an incorrect operation will result in injury to personnel and some
damage to the product.
Electric shock→this symbol warns of a possible electric shock hazard.
Fire→this symbol warns of a possible fire hazard.
Prohibited→this symbol indicates the action is prohibited.

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2. Product warranty
2.1 New product warranty
➢Each FineTek EPF series paddlewheel flowmeter is backed by 1-year limited warranty.
Should you experience a problem with one of our products deemed by our factory to be a
product failure covered by our warranty, for a period of 1-year from the delivery date we
will repair the unit at our factory or provide you with a replacement unit or sub-assembly at
our discretion. A return authorization number must be obtained from FineTek before
returning any unit.
➢If the EPF product failed to operate out-of-the-box, and this failure was not due to
transportation, handling or incorrect Installation, then you can request a replacement unit
within 7 days from the delivery date.
➢When returning a product to the factory, return the entire device and do not disassemble
the unit as previously mentioned. In addition, wherever possible please returning the
device please ensure it is packed to avoid damage during transportation.
➢The EPF product is designed for general use. Special applications, extraordinary use and
overloading or operating beyond published specifications may void the warranty.
➢The product is not warranted in the following situations or conditions, therefore charges
will result for repair of product:
⚫The product is beyond its warranty term.
⚫The defect or damage to the product is caused by the incorrect operation or by not
following the installation and operation instructions contained within the operation
manual.
⚫The product damage is a result of force majeure factors, including but not limited to
natural disasters, floods, fires, earthquakes, lightning, severe weather conditions such
as hurricanes, typhoons, tornadoes etc., human error such as use of improper voltage,
high-humidity, water leakage, stains, corrosion, loss, improper storage etc. and other
abnormal factors.
⚫The damage is caused by installation, addition, expansion, modification and repair of
parts not authorized specifically or certified by FineTek.
⚫If the data label information on the product is incorrect or unclear so as to not be able
to read or confirm the product serial number.
2.2 Repair warranty
Repaired product is warranted for 6 months from the delivery date. The warranty is
limited to the part(s) replaced or repaired during the repair. If the repaired or replaced part
is defective within this term the same part(s) will be repaired or replaced free of charge.

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2.3 Service Network
Company
Address
Telephon
Fax
Taipei
Headquarters
(Taiwan)
No.16, Tzuchiang St., Tucheng
Industrial Park, New Taipei City
23678
[phone]
[phone]
Taichung
Sales office
(Taiwan)
[phone]
[phone]
Kaohsiung
Sales office
(Taiwan)
[phone]
[phone]
Fine automation
Co., Ltd. (China)
No. 451, Duhui Road,
Zhuanqiao Township, Minhang
District, Shanghai City 201109
[phone]
[phone]
Aplus FineTek
(Sensor Inc.)
355 S. Lemon Ave, Suite
D, Walnut, CA 91789
1 909 598 2488
1 909 598 3188
FineTek Pte Ltd.
(Singapore
Branch)
37 Kaki Bukit Place, Level 4
Singapore 416215
[phone]
[phone]
FineTek GmbH
(Germany Branch)
Bei den Kämpen 26
21220 Seevetal-Ramelsloh,
Germany
[phone]
[phone]
FineTek Co., Ltd.
(Indonesia Branch)
PERGUDANGAN TUNAS BITUNG
JL. Raya Serang KM. 13,8, Blok C3
No. 12&15, Bitung Cikupa,
Tangerang 15710
[phone]
[phone]

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3. Product Inspection
3.1 Product Check
➢Doppler ultrasonic flowmeter transmitter: 1 set.
➢Doppler ultrasonic sensor (including cable): 1 set.
➢Sensor bracket: 1 group.
➢Couplant for ultrasonic testing: 1.
➢Operating instructions: 1 set.
➢Imported product inspection form: 1 copy.
3.2 Safety Inspection
➢Before unpacking, please check that the outer packaging is not deformed or damaged.
Take pictures as proof for compensation.
➢After unpacking, please check the contents for deformation, damage, or other quality
problems. Take pictures as proof for compensation.
➢After opening the box, immediately check that the contents and quantity match your order.
➢If the above abnormal conditions occur, contact the company (include photos) within 7
days from receiving the goods. Failure to do so will result in the customer bearing the
replacement/repair costs.
3.3 Handling and Carrying
➢Avoid dropping, collision, or other excessive impact on the product. Electric shocks or
damage may result.
➢Do not pull hard on the cable probe to avoid the cable falling out or becoming misaligned.

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4. Storage and Transportation Requirements
4.1 Environmental Requirements
➢Rainproof and moisture-proof.
➢During transportation, minimize vibrations and impact as much as possible.
➢Applicable temperature range: 20～60 °C.
➢Room humidity: less than 80%.
➢If stored in the open, the flowmeter may not operate properly.
4.2 Handling Requirements
To prevent the product from being damaged during delivery, please keep it in its original
packaging state as packed by the manufacturer.

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5. Product Introduction
5.1 Features of the product
➢When measuring the flow rate, you may start the measuring without the need of
dismantling the pipeline and it will not adversely affect the original pipeline and the
process fluid.
➢The LCM display module can display the instantaneous flow rate and total flow rate.
➢4-20mA output, pulse output, RS485 Modbus communication.
➢Durable industrial design. Highly reliable process.
➢Suitable for measuring sewage and wastewater containing higher volumes of air
bubbles and the liquid containing particular impurities.
5.2 Working theory
The primary measuring theory of the Doppler Ultrasonic Flow Meter is to measure the
flowing speed according to the Doppler Effect. When executing the measuring, the
liquid medium should contain tiny particles (impurities or air bubbles) that are moving at
the same speed as the liquid. During the measuring process, the transducer mounted
on the Doppler Flow Meter will transmit the ultrasonic pulse signal to the liquid. When
hitting the tiny particles in the liquid, the pulse signal will be reflected by the ultrasonic
signal. In this way, the frequency will change when the reflective wave is received by
the transducer. Based on the variation value of the frequency and the Doppler Effect,
the Doppler Flow Meter will then calculate the moving speed of the particulars when
flowing through the measuring point. Through the programmed flow field, the Flow
Meter calculates the average flowing velocity along the entire sectional profile.
υ = ∆𝑓 × 𝑐
2𝑓𝑜𝑐𝑜𝑠𝜃 − ∆𝑓𝑐𝑜𝑠𝜃
※The resonance point is intended for transmitting the frequency and the
reverse resonance point is designed for receiving the returned frequency.
During the entire process, the Doppler transducer is used for transmitting
and receiving the signals. Therefore, the frequency of the transmitted
signal is set as 640KHz.
Described below
are the working
theory and
formula:
V = Velocity
C = Acoustic speed of fluid
Δf = Calculated by demodulating the hardware
circuit.
fo: Signal transmission frequency: 640KHz
Θ: Angle of incidence

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5.3 Product applications
The Doppler Ultrasonic Flow Meter is mainly designed for measuring liquid that contains
excessive impurities such as solid particles or bubbles and that is deeply contaminated. It
is mainly applied in the following fields:
➢Sewage, oily sewage, wastewater, and dirty circulation water; for example, the
wastewater and sewage treatment plant.
➢The liquid medium used by the industrial production process contains particles and
bubbles; for example, the pulps in the factory and the toxic wastewater.
➢The liquid contains the sands and particles; for example, the liquid in the mining
mucks, the grouting liquid used in the oilfield well drilling, and the harbor dredging, etc.
➢Other types of turbid pulps; for example, paper pulps, mining pulps and crude oil, etc.

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6. Specifications of the product
6.1 Specifications
Specifications of the transmitter
Dimensions of the screen
LCM 128*64-pixel, backlight type
Push key
3-key operation type
Communication interface
RS-485(Modbus)
Measuring techniques
Doppler Method
Liquid to be measured
The medium that is used for stuffing the pipeline and
that contains solids or bubbles such as sewage,
wastewater, mud, grinding medium and sticky liquid
(Note 1)
Analog output
4~20mA
Pulse width
Automatic (pulse width: 50%)
Pulse Mode
NPN crystal output: 32 vdc/200mA
Pipe dimensions
DN15 to DN500
Scope of flow rate
0.03 to 12 m/s
Measuring accuracy (Note 3)
0.12~1.5 m/s of F.S., ±0.25 % F.S. (Note2)
1.5~12 m/s of F.S., ±2 % O.R. (Note2)
Pipe materials
The materials that can transmit ultrasonic waves such
as PVC, carbon steel, stainless steel, cast iron,
ductile iron, etc.
Power input
18~32 VDC/100~240VAC
Meter working temperature
-20°to 70°C
Meter protection rating
Waterproof/dustproof: IP67
Specifications of the transducer
Resonance frequency
600±30 KHz
Resonance impedance
≦55Ω
Reverse resonance frequency
680±30 KHz
Reverse resonance impedance
≦200Ω
Working temperature
-25℃~ 55℃
Working humidity
≦95 %RH
Waterproof class
IP66
Cable length
Cable length: 6.8m
Note 1: The minimum size required for thesolidsor bubbles is 100µm and the minimum concentration
is 75 ppm.
Note 2:
◆Physical water flow testing device manufactured by Finetek. Fluid temperature: 20±10°C;
environment temperature: 20±5°C
◆Length of straight piping section: Upstream –15 D or over; downstream section: Over 5 D
◆When operating in the regular environment, the value after the following calculation process
will be considered: linearity +measuring error+ repetitive accuracy.
◆Additional errors to the measured value due to the type and status of the pipeline used in the
site, as well as the fluid type and fluid temperature, may occur.

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Note 3: The recommended economic flowing velocity should be over 1.5m/s.
12.5% of F.S. = 1.5m/s
0.0%
5.0%
10.0%
15.0%
20.0%
25.0%
30.0%
0.0 2.0 4.0 6.0 8.0 10.0 12.0
Error (%)
Standard meter flowing velocity (m/s)

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6.2 Outline dimensions
Transmitter
Transducer (DN15~DN500) Transducer support unit

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7. Wiring instructions
7.1 Electrical specifications –DC
Input voltage: DC24V
Input current: 200mA±20%
7.1.1 Instructions for wiring terminal
Before each use, please follow the safety hint provided below:
The wiring shall be allowed for the transducer under the power outage status.
Wiring function
Insulation layer color
of the wires
Description
Insulation layer
color of the core
V+
24V
V-
0V
TX+
Dual-core black wire
Transducer
transmitting end
White
TX-
Black
RX+
Dual-core white wires
Transducer receiving
end
White
RX-
Black
DQ_V
Trip-core, 3-color wire
Temperature
transducer
Red wire
DQ
Yellow wire
DQ_G
Black wire
GND
Transducer screen cable
Electromagnetic
screening
Black
D+
RS485 wiring
D-
MA+
4-20mA output wire
MA-
P+
Pulse output wire
P-
Power input Transducer wiring Transducer screen cable

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7.2 Electrical specifications –AC
Input voltage: AC100~240V
7.2.1 Instructions for wiring terminal
Before each use, please follow the safety hint provided below:
The wiring shall be allowed for the transducer under the power outage status.
Wiring function
Insulation layer color
of the wires
Description
Insulation layer
color of the core
L
AC input power
N
AC input power
TX+
Dual-core black wire
Transducer
transmitting end
White
TX-
Black
RX+
Dual-core white wires
Transducer receiving
end
White
RX-
Black
DQ_V
Trip-core, 3-color wire
Temperature
transducer
Red wire
DQ
Yellow wire
DQ_G
Black wire
GND
Transducer screen cable
Electromagnetic
screening
Black
D+
RS485 wiring
D-
MA+
4-20mA output wire
MA-
P+
Pulse output wire
P-
L N
Input power Transducer wire Transducer screen cable

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8. Installation instructions
For detailed operating instructions and operating methods, please refer to the instructions
provided below:
➢Applicable regulations have been established for the design, testing and power supply of
the flow meter. The users are required to comply with the provided instructions in order
to maintain the safe operation and normal function of the flow meter.
8.1 Environmental safety
To protect the bodily and equipment safety, the user must comply with the following
requirements:
➢Before selecting the position and installing the flow meter, the user must peruse the
applicable instructions provided in this Manual. In the meantime, the user is also required
to consider the safety requirements being established for the environment where the flow
meter, the equipment and the machine are installed.
➢The flow meter shall be installed and serviced by persons possessing a certain level of
knowledge required for the flow meter.
➢The transducer and the transmitter must be correctly installed on the flow meter to ensure
that they are tightly sealed, safe and reliable.
➢Take appropriate precautions to prevent the electrocution accident from occurring.
8.2 Circuit installation
Wiring cautions
➢The 2-core insulating rubber sheath cable shall be used as the power cord, and the outer
diameter of the wire shall be ranged between 5~7mm.
➢When operating under normal 24VDC power supply status, the resistance of the cable
shall not be higher than 10Ω.
➢The total impedance of the cable drawn from the current output terminal shall not be
higher than the specified nominal value.
➢Normally, the NPN crystal output is used as the pulse wave or the frequency output.
Therefore, it should be connected with the external power.
➢
8.3 Cautions
➢Before starting the installation, the pipe area provided for installing the ultrasonic
transducer must be thoroughly cleaned until the original metallic luster is exposed.
➢The transducer and the pipe engaging section must be thoroughly cleaned and shall be
fully coated with the ultrasonic-dedicated coupling agent in the meantime. Its purpose is
to ensure that air or sand layer will not remain on the transducer and pipe contracting
interface to affect the ultrasonic signal transmission effect.
8.4 Cautions for power supply
Inspection before power supply
➢If damage occurs to the transmitter and the transducer in the flow meter during the
installation process.
➢If the voltage of the operating power meets the indicated specifications.
➢The installation distance of the transducer shall depend on the distance required for the
transmitter.
➢Ensure that the pipe is fully filled with the liquid. In the meantime, it is also required to
remove the gas remaining in the pipe.

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9. Transducer installation
9.1 Select the installation position
To avoid the measuring pipe not under low liquid level conditions, please install the transducer
until reaching the constant full-load position being marked in the pipe (Fig. 1).
Upward vertical flowing Upward inclined flowing Lowest point in the pipe system
(Fig. 1)
➢During the using process, care should be used to prevent the gas from entering. If bubbles
exist in the fluid, it will affect the measuring stability (Fig. 2).
(Fig. 2)
Gap
Water flowing
direction
Water flowing
direction
The liquid may not be fully
filled in the pipe.

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➢The transducer should be installed in a position that is fully filled with the liquid in the pipe
and it should not be installed in a position that is filled with the air or the sediment in the
pipe (Fig. 3). The optimal installation scope of the transducer should be within ±45° and
the maximum installation angle should be within ±60°. If the maximum installation angle
is not availed due to the working conditions, then the optimal installation scope should be
selected (Fig. 4).
➢
(Fig. 3)
(Fig. 4) Transducer installation scope
➢Do not install the transducer in the pipeline connection area and it should not be installed
in the area presenting a welded gap in the pipe. In this case, the smooth area of the pipe
surface should be selected.
➢To prevent interfering with the testing signal, do not install multiple devices in the adjacent
area.
➢The measuring stability will be affected if installing the Ultrasonic Flow Meter in the
position containing the fluid mixed by different water sources.
➢Transducer installation environment temperature -25 ℃~55 ℃. Do not install the
transducer near the heating component.
➢When exposing the transducer to rain and sunshine for a longer time, it may accelerate
the degrading of the transducer's performance. Therefore, avoid installing the transducer
in these environments.
➢The transmitter, the transducerand the signal lead wire used by the Ultrasonic Flow Meter
are vulnerable to the interference of the inverter, radio station, TV station, microwave
communication station, GSM base station and HV lines, etc. Therefore, the transmitter
and the transducer should be installed at positions that are far away from the aforesaid
interfering sources. The cutoff isolating wire connected with the transmitter housing and
the signal lead wire should be grounded.
➢It shall not use the power drawn from the circuit used by the inverter. Instead, isolated
power sources should be selected to supply the power to the transmitter.
➢To enhance the measuring accuracy, it should be installed in the straight pipe section at
the upstream and downstream of the transducer; as indicated in the table below. (Fig. 5)
(D = Outer diameter of the pipeline)
Gap
Sediment
Transduce
r

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Type
Upstream straight pipe length
Downstream straight pipe length
90  Elbow
T-shape
connector
Expansion
pipe
Converging
pipe
Control
valve
Upstream flow rate control
Downstream flow rate control
Pump
(Fig. 5)
Check Valve
Shutoff Valve

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Transducer coupling agent coating method