XingKeChuang XKC-Y28A-NO User manual

深圳市星科创科技有限公司
Shenzhen XingKeChuang Technology Co., Ltd.
Phone: [phone] FAX: [phone] URL: http://www.sz-xkc.com
Address: 11th Floor, No. 48, Xinyu Road, Xinqiao Community, Xinqiao Street, Baoan District, Shenzhen
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Non-contact liquid level sensor instruction manual
(Intelligent externally attached pipeline detection liquid level special series products)
XKC-Y28A-NO
Table of Contents
1st. Overview.................................................................................................................................................................................... 2
2nd.Product Features ...................................................................................................................................................................... 2
3rd.Product Applications ................................................................................................................................................................ 2
4th.Product parameter.................................................................................................................................................................... 3
5th.product selection........................................................................................................................................................................ 3
6th. Installation method .................................................................................................................................................................. 3
7th. Sensitivity adjustment.............................................................................................................................................................. 5
8th.Y28A wiring diagram of various models................................................................................................................................ 5
9th. Product size and physical map................................................................................................................................................ 7
10th.Other matters needing attention............................................................................................................................................ 7
11th.Troubleshooting....................................................................................................................................................................... 8
12th.Product warranty terms and instructions............................................................................................................................ 8
13th. Manual version..................................................................................................................................................................... 10
XKC-Y28A-NO-V1.6

深圳市星科创科技有限公司
Shenzhen XingKeChuang Technology Co., Ltd.
Phone: [phone] FAX: [phone] URL: http://www.sz-xkc.com
Address: 11th Floor, No. 48, Xinyu Road, Xinqiao Community, Xinqiao Street, Baoan District, Shenzhen
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1st. Overview
The intelligent non-contact liquid level sensor (hereinafter referred to as the liquid level sensor) adopts advanced signal
processing technology and high-speed signal processing chip, which breaks through the influence of the container wall
thickness and realizes the true non-contact of the liquid level in the closed container. Contact detection. The liquid level
sensor (probe) is installed on the upper and lower sides of the outer wall of the container to be tested (the high and low
levels of the liquid level). The non-metallic container does not need to be opened, and the installation is simple and does
not affect production. It can detect the level of various toxic substances, strong acids, strong alkalis and various liquids in
high-pressure airtight containers. The liquid level sensor has no special requirements for the material of the liquid
medium and container, and can be widely used.
XKC-Y28A-NO/NC/RS485 products are specially designed for non-metallic pipes (pipe outer diameter D≤10MM),
respectively, relay normally open output and relay normally closed outputand RS485 interface output.
2nd.Product Features
1. XKC-Y28A-NO/NC/RS485 sensor, suitable for non-metallic pipes (pipe outer diameter D≤10MM) without direct
contact with liquid, will not be corroded by strong acids and alkalis and other corrosive liquids, and will not be affected
by scale or other debris Influence, it can be completed to detect whether there is liquid inside the container or pipeline.
2. Intelligent liquid level reference adjustment and liquid level memory function, liquid level status display mode, can
realize multi-point series connection.
3. The detection is accurate and stable, and the boiling water level can be detected.
4. Pure electronic circuit structure, non-mechanical working mode, stable performance and durability.
5. High stability, high sensitivity, strong anti-interference ability, free from external electromagnetic interference, special
treatment for power frequency interference and common mode interference, to be compatible with all 5V, 12V, 24V
power adapters on the market.
6. Strong compatibility, penetrating various non-metallic container pipes, such as plastic, glass, ceramic and other
containers, suitable for liquid level detection of various curved, arc, cylindrical containers or pipes.
7. The voltage can be selected (5V, 12V, 24V), suitable for connecting various circuits and product applications。
3rd.Product Applications
The intelligent non-contact liquid level sensor uses the inductive capacitance of water to detect whether there is liquid.
When there is no liquid close to the sensor, the sensor has a certain static capacitance to the ground due to the distributed
capacitance on the sensor. When the liquid level slowly rises and approaches the sensor, the parasitic capacitance of the
liquid will be coupled to this static capacitance, making the capacitance value of the sensor larger, and the changed
capacitance signal is then input to the control IC for signal conversion. The capacitance is converted into a change of a
certain electrical signal, and then a certain algorithm is used to detect and judge the degree of this change. When the
change exceeds a certain threshold, it is considered that the liquid level has reached the sensing point.

深圳市星科创科技有限公司
Shenzhen XingKeChuang Technology Co., Ltd.
Phone: [phone] FAX: [phone] URL: http://www.sz-xkc.com
Address: 11th Floor, No. 48, Xinyu Road, Xinqiao Community, Xinqiao Street, Baoan District, Shenzhen
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4th.Product parameter
Project name
Parameters
Product model
XKC-Y28A-NO
Supply voltage（Vin）
5V、12V、24V
Output mode
Normally open
electric current
13mA
The output current
DC24V/2A
Response time
500mS
Working temperature
-20~105℃
Applicable pipe diameter
range
Outer diameter of pipe D(mm)5-10（mm）
Liquid level accuracy
±1.5mm
humidity
5%~100%
Line length
500MM（±10MM）(Bulk can be customized)
Terminal sequence
Brown (power supply positive), yellow (signal output)
Blue (power negative), black (COM terminal)
Material
PC-V0 fireproof material
Waterproof performance
IP67
Safety standard certification
CE
Environmental protection
certification
ROHS2.0
5th.product selection
Normally open output interface —————— Model: XKC-Y28A-NO (DC 5V)
Normally open output interface —————— Model: XKC-Y28A-NO (DC 12V)
Normally open output interface —————— Model: XKC-Y28A-NO (DC 24V)
6th. Installation method

深圳市星科创科技有限公司
Shenzhen XingKeChuang Technology Co., Ltd.
Phone: [phone] FAX: [phone] URL: http://www.sz-xkc.com
Address: 11th Floor, No. 48, Xinyu Road, Xinqiao Community, Xinqiao Street, Baoan District, Shenzhen
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①.Pull open the shrapnel
②.Pull the shrapnel and put the water pipe between the two shrapnels
③.Just let go of the shrapnel
After installation, the effect is as follows。

深圳市星科创科技有限公司
Shenzhen XingKeChuang Technology Co., Ltd.
Phone: [phone] FAX: [phone] URL: http://www.sz-xkc.com
Address: 11th Floor, No. 48, Xinyu Road, Xinqiao Community, Xinqiao Street, Baoan District, Shenzhen
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note:
1. This product is suitable for pipes with an outer diameter of 5mm～10mm, and the maximum shall not exceed 11mm
2. The maximum opening angle of the spring leaf shall not exceed 60°
7th. Sensitivity adjustment
If the non-contact liquid level sensor cannot detect or the detected liquid level deviates from the Y28A sensor, The
sensitivity knob can be adjusted with a small screwdriver. Setting method:
1. Turn counterclockwise to increase sensitivity.
2. Turn clockwise to lower the sensitivity
8th.Y28Awiring diagram of various models

深圳市星科创科技有限公司
Shenzhen XingKeChuang Technology Co., Ltd.
Phone: [phone] FAX: [phone] URL: http://www.sz-xkc.com
Address: 11th Floor, No. 48, Xinyu Road, Xinqiao Community, Xinqiao Street, Baoan District, Shenzhen
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Product Applications of relay NO point output:
1. When the black wire is connected to VCC:
When the liquid is sensed, the relay is closed, the NO point of the relay is turned on, and the VCC voltage is output;
When no liquid is sensed, the relay is disconnected, and the relay NO point is disconnected.
2. When the black wire is connected to GND:
When liquid is sensed, the relay is closed, the NO point of the relay is turned on, and the GND voltage is output;
When no liquid is sensed, the relay is disconnected, and the relay NO point is isconnected.

深圳市星科创科技有限公司
Shenzhen XingKeChuang Technology Co., Ltd.
Phone: [phone] FAX: [phone] URL: http://www.sz-xkc.com
Address: 11th Floor, No. 48, Xinyu Road, Xinqiao Community, Xinqiao Street, Baoan District, Shenzhen
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9th. Product size and physical map
Terminal model: XH2.54-4P
10th.Other matters needing attention
(1) The viscosity of the measured liquid medium

深圳市星科创科技有限公司
Shenzhen XingKeChuang Technology Co., Ltd.
Phone: [phone] FAX: [phone] URL: http://www.sz-xkc.com
Address: 11th Floor, No. 48, Xinyu Road, Xinqiao Community, Xinqiao Street, Baoan District, Shenzhen
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When the dynamic viscosity is less than 10mPaS, it is measured normally. 10mPaS<dynamic viscosity<30mPaS may
affect the detection. When the dynamic viscosity is greater than 30mPaS, it cannot be measured because a large amount of
liquid adheres to the container wall.
(2) Note: As the temperature increases, the viscosity decreases, and most high-viscosity liquids are more affected by
temperature. Therefore, pay attention to the influence of liquid temperature when measuring viscous liquids.
(3) Pay attention to keeping the sensor clean, try to prevent corrosion and avoid violent collisions and blows from other
objects.
(4) During outdoor installation, avoid direct sunlight and rainwater directly flowing to the main body of the sensor, and
keep away from high heat sources and pay attention to ventilation. If the ambient temperature exceeds the rated
temperature, corresponding cooling protection measures should be taken.
(5) When the ambient temperature is lower than the normal operating temperature range of the sensor, an instrument
protection box or other protective rain cap devices can be used for antifreeze protection, and pay attention to keeping the
sensor dry. The sensor should be regularly maintained and inspected. (The detection time interval is determined by the use
unit according to the specific situation).
11th.Troubleshooting
Fault status
Analyze the reasons
Problem solving measures
After the liquid level sensor is
energized, there is no response
(the indicator light does not
light when the water level
reaches the sensing point, and
the sensitivity adjustment has
no response)
①The power cord is not connected
Check and connect the power
②The positive and negative ends of
the power cord are reversed
Correct wiring
③The power module is damaged
Replace the circuit board where the
power module is located
④Sensitivity is too low
Adjust the sensitivity to the
appropriate gear
The indicator light keeps on
①Sensitivity grade is too high
Adjust the sensitivity to the
appropriate grade
②The initialization parameters are
abnormally modified
Return to the factory to reinitialize
③The sensor has debris or other metal
parts close to it
Clean up debris and keep a certain
distance from metal parts
12th.Product warranty terms and instructions
(A) .Warranty service
1. Warranty period maintenance: from the date of purchase, the product host has a one-year free warranty. The company
has the right to decide to repair or replace the faulty part. If it is replaced, the replacement part may be a new device or a
repair product of the same category, function, and quality. The replaced faulty part belongs to the company; the product
Resale and repair do not affect the warranty period. Products that have been repaired or replaced continue to enjoy the
original remaining warranty period service. If the warranty period is less than three months after the repair, the repaired or
replaced part shall be shipped from the date of delivery Warranty for three months; all products of the company are
guaranteed for repair.
2. Loss upon arrival (DOA) replacement: From the day of purchase, you can enjoy a free replacement service within 7
days. Products with the following problems are defined as DOA equipment: the packing and packing list do not match

深圳市星科创科技有限公司
Shenzhen XingKeChuang Technology Co., Ltd.
Phone: [phone] FAX: [phone] URL: http://www.sz-xkc.com
Address: 11th Floor, No. 48, Xinyu Road, Xinqiao Community, Xinqiao Street, Baoan District, Shenzhen
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after the first unpacking of the product; some or all of the components cannot be used normally after the first unpacking
of the product (surface scratches or other things that do not affect the function of the device) Defects are not included);
other hardware failures identified by our company’s engineers remotely or locally.
(B). Applicable limitations of warranty
For the following situations, the company does not assume warranty responsibility:
1. The product is out of warranty; the surface of the product is fragile and damaged; the appearance of the product is
seriously damaged, installation/use in abnormal environment, unauthorized disassembly and repair/modification, external
power supply damage and other abnormal damage;
2. Damage caused by incorrect installation and use of the product by the user not following the requirements of the
manual;
3. Damage caused by natural disasters and human negligence (fire, lightning, flooding, impact, etc.).
(C) .Accessories and consumables are not covered by the warranty.
(D) .Non-free warranty service
Within two years of product purchase, for non-warranty product (including components) failures and damages, you can
choose paid maintenance services (free labor costs), and we will charge the transportation cost of repairing parts and
accessories according to the actual situation.
(E). Ways to obtain warranty service
It is recommended that you contact the dealer who purchased this product to obtain the warranty service. For the
warranty, please present a valid warranty card (the dealer’s stamp is required to take effect) or the purchase
invoice/receipt: if you can’t show it, the product’s free warranty period 12 months from the product shipment date, and
the latest DOA application deadline is 7 days from the product shipment date.
(F). Statement
1. The copyright of this manual belongs to Shenzhen Xingkechuang Technology Co., Ltd. (Xingkechuang) and its
authorized licensors. Shenzhen Xingkechuang Technology Co., Ltd. (Xingkechuang) reserves all rights.
2. Without the written permission of the company, no unit or individual may excerpt or copy part or all of the contents of
this manual, and shall not spread it in any form.
3. The customer recognizes that the purpose of the design and production of the company's products does not involve use
in products related to life support or other systems or products used in other dangerous activities or environments.
Personal injury or death, property or environmental damage due to product failure (collectively referred to as high-risk
activities). The company's products are artificially used in high-risk activities, and the company does not guarantee it and
is not liable to customers or third parties.
4. Due to product version upgrades or other reasons, the contents of this manual may change. Xingkechuang reserves the
right to modify the contents of this manual without any notice or prompt. This manual is only used as a guide.
Xingkechuang makes every effort to provide accurate information in this manual. However, Xingkechuang does not
guarantee that the contents of the manual are completely free of errors. All statements, information and suggestions in this
manual do not constitute any express or Implied guarantee.
5. Not all models are available in all countries/regions
Please keep this manual properly. Before using the product, please read this manual carefully. When using the product,
please be sure to operate in accordance with this manual. The company is not responsible for injuries and accidents

深圳市星科创科技有限公司
Shenzhen XingKeChuang Technology Co., Ltd.
Phone: [phone] FAX: [phone] URL: http://www.sz-xkc.com
Address: 11th Floor, No. 48, Xinyu Road, Xinqiao Community, Xinqiao Street, Baoan District, Shenzhen
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caused by operations that do not follow this manual.
(G).Environmental protection This product meets the design requirements for environmental protection.The storage, use
anddisposal should comply with relevant national laws and regulations.Seek to proceed.
13th. Manual version
Version
Release date
V16
September 28, 2020