CERTEON YW-136

Contents

YW-136 Submersible Liquid Level Sensor and Bar-Graph Display Controller User Manual

Model: YW-136 | Brand: CERTEON

1. Product Overview

The CERTEON YW-136 is a submersible liquid level measurement and control system engineered for continuous monitoring of clean water and non-corrosive liquids. This robust system comprises an IP68 waterproof level transmitter and a column-type LED bar-graph display meter with integrated relay outputs. It delivers a precise 4-20 mA analog signal for accurate level measurement and offers multi-point alarm and control functionalities, making it ideal for water tanks, reservoirs, irrigation systems, and industrial water treatment applications.

The default configuration includes a level sensor and a column-type display meter.

YW-136 Submersible Liquid Level Sensor and Bar-Graph Display Controller in a water tank setup, showing accurate level monitoring and real-time output.

YW-136 Submersible Liquid Level Sensor and Bar-Graph Display Controller in a water tank setup, showing accurate level monitoring and real-time output.

2. Specifications

2.1. System Components

  • Bar-graph Display Meter:
    • Power supply: 220 VAC
    • Input signal: 4–20 mA
    • Output: 4 relay outputs
    • Supports upper and lower limit alarm functions
  • Level Sensor:
    • Power supply: 24 VDC
    • Output signal: 4–20 mA
    • Measurement range: 1–10 meters
    • Cable length: 5–10 meters
    • Protection level: IP68

2.2. General Parameters

Components of the YW-136 system, including the bar-graph display meter and two types of level sensors, highlighting their power and measurement specifications.

Components of the YW-136 system, including the bar-graph display meter and two types of level sensors, highlighting their power and measurement specifications.

Parameter Specification
Power Supply Display: 220VAC / Sensor: 24VDC
Overall Accuracy ±1% FS
Output Signal Sensor: 4-20mA / Display: Relay Outputs
Stability ≤0.2% FS
Medium Clean water, non-corrosive liquid
Protection Level IP68
Overload Capacity 150% FS
Temperature Drift ≤0.01% FS/°C
Medium Temperature Range -20°C to +40°C

3. Features

  • Anti-clogging Design: Tapered four-hole structure effectively prevents blockage, ensuring reliable long-term operation.
    Product detail image showing the anti-clogging design of the liquid level transmitter with a four-hole cone design.

    Anti-clogging design of the liquid level transmitter.

  • Stable and Accurate Output: Provides a consistent 4–20mA analog signal with ±1% accuracy and minimal temperature drift.
  • Rugged IP68 Protection: Fully sealed construction ensures dependable performance in wet and harsh environments.
    Product detail image illustrating the reliable triple-protection design with integrated laser welding and leak-proof features.

    Reliable triple-protection design with integrated laser welding.

  • Display with 4 Relay Outputs: LED bar-graph display supports four relay outputs, enabling multi-point level monitoring and control.
  • Leakproof and Anti-bending Construction: Laser-welded housing with an integrated air guide tube prevents leakage and protects the cable from bending.
    Product detail image showcasing the anti-bending design of the sensor's wiring end with a flexible vent tube.

    Anti-bending design of the sensor's wiring end.

  • Strong EMI Resistance: Industrial-grade anti-interference design ensures stable and accurate signal transmission.

3.1. Applications

The YW-136 is suitable for a wide range of applications, including:

  • Water tanks
  • Reservoirs
  • Industrial water treatment systems
  • Agricultural irrigation systems
YW-136 level sensor deployed in a harsh, dirty water environment, demonstrating its corrosion-resistant design.

YW-136 level sensor deployed in a harsh, dirty water environment, demonstrating its corrosion-resistant design.

YW-136 system installed for automatic high and low liquid level control in a large industrial tank.

YW-136 system installed for automatic high and low liquid level control in a large industrial tank.

4. Setup and Installation

4.1. Preparation

  1. Verify that the power supply matches the rated voltage of the display (220 VAC) and sensor (24 VDC).
  2. Ensure the measured liquid is clean water or a non-corrosive liquid within the specified temperature range (-20°C to +40°C).
  3. Check that cable length is sufficient for the intended installation depth.
  4. Ensure all terminal connections are properly sealed for waterproof protection.

4.2. Installation Steps

  1. Mount the Display Unit: Mount the display unit in a dry indoor control panel or protected enclosure.
  2. Connect Wiring: Connect the sensor's 4-20 mA output to the display input terminals. Refer to the wiring diagrams below for correct connections.
    Wiring diagram for the buzzer alarm and toggle switch connections on the YW-136 display unit.

    Buzzer Alarm & Toggle Switch Wiring Diagram. Note: Actual product does not come pre-wired; you need to connect it yourself.

    Water Inlet Wiring Diagram for the YW-136 system, showing connections for sensor, solenoid valve, pump, and 220V power.

    Water Inlet Wiring Diagram. Connect sensor's red wire to A, black wire to B. C and D connect to solenoid valve/small pump motor (for over 3A, use AC contactor). E and F connect to 220V power (neutral and live wires not distinguished).

    Drainage Wiring Diagram for the YW-136 system, showing connections for sensor, solenoid valve, pump, and 220V power.

    Drainage Wiring Diagram. Connect sensor's red wire to A, black wire to B. C and D connect to solenoid valve/small pump motor (for over 3A, use AC contactor). E and F connect to 220V power (neutral and live wires not distinguished).

  3. Immerse Sensor: Immerse the level sensor vertically into the liquid to the required depth. Avoid placing the probe directly at the tank bottom where sediment may accumulate.
  4. Secure Cable: Secure the cable to prevent mechanical stress or bending at the entry point. If using external wiring, ensure waterproofing (e.g., sealed terminal box). For simple installations, bend the cable downward to avoid water ingress.
    Diagram illustrating the probe size and installation method, including bending the cable vertically downward for waterproofing.

    Probe installation diagram, showing recommended cable bend for waterproofing.

5. Operation

  1. Power On: After completing all wiring inspections, power on the display unit.
  2. Level Indication: The LED bar graph will indicate the liquid level proportionally to the 4-20 mA input signal from the sensor.
  3. Configure Alarms: Configure upper and lower alarm limits on the display controller as required.
  4. Relay Activation: Relay outputs will activate when the preset alarm thresholds are reached, enabling automatic control functions.
  5. Data Reading: The bar-graph display provides a visual representation of the current liquid level. Relay status indicators show the activation of control or alarm outputs.
    Labeled diagram of the Vertical Bar Graph Water Level Display Meter, indicating keys and display elements.

    Vertical Bar Graph Water Level Display Meter with labeled controls and indicators.

5.1. Product in Action

Video showcasing Chikong Automation's industrial automation solutions and the YW-136 in various applications.

6. Maintenance

  • Storage: Store the unit in a dry and ventilated environment, away from direct sunlight.
  • Sensor Cleaning: Keep the sensor diaphragm clean and free from debris to ensure accurate readings.
  • Periodic Inspection: Periodically inspect cable insulation and terminal sealing for any signs of wear or damage.
  • Long-Term Storage: If the product requires long-term storage, keep it in its original packaging and avoid high humidity conditions.

7. Troubleshooting and Precautions

7.1. General Precautions

  • Use only within the specified measurement range (1-10m) and temperature limits (-20°C to +40°C).
  • Do not use in corrosive, flammable, or explosive liquids unless specifically approved for such environments. Misuse may result in equipment damage or injury.
  • Ensure correct DC power supply (24VDC) for the sensor to avoid permanent damage.
  • Prevent cable damage caused by sharp edges, excessive bending, or tensile stress.
  • Do not exceed 150% of the rated measurement range.
  • Always disconnect power before performing any wiring or maintenance.
  • Keep out of reach of children.

7.2. Electrical Safety Warning

WARNING! Risk of electric shock.

  • The display unit operates at 220 VAC. Installation and maintenance must be performed by qualified personnel.
  • Ensure proper grounding of the display unit to reduce electrical hazard.
  • Do not open the enclosure while powered.

Note: The above warning information is for reference only. Final warning language must comply with the official language requirements of the destination EU country.

8. User Tips

  • For optimal performance, ensure the sensor is immersed vertically and not touching the bottom of the tank where sediment might accumulate.
  • Regularly check the cable for any signs of wear, especially at entry points, to prevent signal loss or damage.
  • When setting up alarm limits, consider a buffer zone to avoid frequent relay switching due to minor liquid level fluctuations.

9. Frequently Asked Questions (FAQs)

Q1: Is this sensor suitable for corrosive liquids?
A1: No, it is designed for clean, non-corrosive water only.
Q2: Can the display be configured for different alarm levels?
A2: Yes, the LED bar display supports four relay outputs that can be customized for different alarm points.
Q3: Is the sensor easy to install and maintain?
A3: Yes, the anti-bending cable design and anti-clogging structure make installation simple and maintenance reliable.

10. Support and Contact Information

For technical consultations, bulk orders, or any product-related inquiries, please feel free to contact us. We are here to help!

SHANGHAI CHIKONG AUTOMATION INSTRUMENT CO., LTD

  • WhatsApp: +86-19542723588
  • Email: celiachen008@gmail.com
YW-136 level sensor and display unit, with contact information for support.

Contact details for support.

A user manual in PDF format is also available for download: YW-136 User Manual (PDF)

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