Product 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 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), and 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-Y28-NO/NC products are specially developed for non-metallic pipes (pipe outer diameter D≥11MM) or flat container liquid level detection. This series of liquid level sensors has two signal output interfaces, which are relay normally open output and relay normally closed output;
Normally open output interface —— Model: XKC-Y28-NO (5V), (12V), (24V)
Normally closed output interface —— Model: XKC-Y28-NC (5V), (12V), (24V)
Product features:
1. XCK-Y28-NO/NC sensor, suitable for non-metallic pipes (pipe outer diameter D≥11MM) or flat containers 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 The impact of debris.
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, ceramics and other containers, the induction pipe wall thickness can reach 20mm; suitable for various curved, arc, cylindrical containers or pipes Bit detection.
7. Voltage can be selected (5V, 12V, 24V), suitable for connecting various circuits and product applications.
Specification:
|
Name
|
Parameter
|
|
Product model
|
XKC-Y28-NC
|
XKC-Y28-NO
|
|
DC Input voltage(Vin)
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5V、12V、24V
|
5V、12V、24V
|
|
Output method
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Normally Close
|
Normally Open
|
|
Working Current
|
13mA
|
|
Output current
|
DC24V/2A
|
|
Response time
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500mS
|
|
Working Environment Temperature
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-5 – 105℃/23 – 221℉
|
|
Sensitivity
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Outer diameter of pipe D(mm)
|
Sense tube wall thickness L(mm)
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|
D≥100
|
20 ± 3
|
|
100>D≥80
|
15 ± 2
|
|
80>D≥60
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12 ± 1.5
|
|
60>D≥40
|
7 ± 1.0
|
|
40>D≥30
|
5 ± 1.0
|
|
30>D≥20
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3 ± 1.0
|
|
20>D≥10
|
1.5 ± 0.5
|
|
Applicable pipe diameter range
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≥11mm
|
|
Liquid Level error
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±1.5mm
|
|
humidity
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5%~100%
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|
Cable length
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500MM（±10MM）
|
|
Line end definition
|
Brown (power supply positive), yellow (signal output)
Blue (power negative), black (COM terminal)
|
|
Material
|
ABS
|
|
Waterproof level
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IP65
|
|
Safety standard certification
|
CE
|
|
Environmental certification
|
ROHS
|
Package included:
1 x Sensor
Working principle:
The intelligent non-contact liquid level sensor uses the sensing 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 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.
Application conditions:
(1) The viscosity of the measured liquid medium
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 more than 30mPaS, it cannot be measured because a large amount of liquid adheres to the container wall.
Note: As the temperature increases, the viscosity decreases, and most high-viscosity liquids are more affected by temperature. Therefore, pay attention to the effect of liquid temperature when measuring viscous liquids.
Sensitivity adjustment:
After installing the sensor according to the method in Section 6, connect the power cord and signal line, and adjust the water level of the container or pipe to between the upper and lower edges of the black sensor film. As shown in Figure 8-1. Rotate the potentiometer at the upper left corner of the sensor with a flat-blade screwdriver. Turn it counterclockwise to increase sensitivity, and turn clockwise to decrease sensitivity, as shown in Figure 8-2.
If the sensitivity is too low, turn the potentiometer counterclockwise until the red indicator light just lights up.
If the sensitivity is too high, turn the potentiometer clockwise until the red indicator light just goes out.
Product Maintenance:
1. The top of the form
Pay attention to keeping the level gauge clean, try to prevent corrosion and avoid violent collisions and blows from other objects.
When installing outdoors, avoid direct sunlight to the main body of the level gauge, keep it away from heat sources and pay attention to ventilation. If the ambient temperature exceeds the rated temperature, take corresponding cooling protection measures.
When the ambient temperature is too low, an instrument protection box or other protective devices can be used for anti-freezing protection, and pay attention to keeping the level gauge dry.
The sensor should be regularly maintained and inspected. (The detection time interval is determined by the use unit according to the specific situation).
After the liquid level sensor is powered on, there is no response (the indicator light does not light up when the water level reaches the sensing point, and the sensitivity adjustment has no response)
①The power is not connected properly Check and connect the power
②The positive and negative ends of the power cord are reversed Correct the wiring
③The power module is damaged Replace the circuit board where the power module is located
④Sensitivity is too low, adjust the sensitivity to an appropriate level
The indicator light is always on
① Sensitivity gear is too high Adjust the sensitivity to the appropriate gear
②The initialization parameters are abnormally modified Return to the factory for reinitialization
③The sensor has debris or other metal parts close to it. Clean up the debris and keep a certain distance from the metal parts.
Availability: 
Shipping: Free Airmail 
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