JYB714 liquid level relay by Delixi

The JYB714 liquid level relay by Delixi is an electronic relay specifically designed for automatic liquid level control. It is suitable for industrial, agricultural, and domestic scenarios, enabling automated water level management in water tanks, water towers, and similar facilities. Below is a summary of its core information:

 I. Core Parameters and Functions

 1. Operating Voltage Range

Alternating Current (AC): 36V, 110V, 127V, 220V, 380V (50Hz)

Direct Current (DC): 24V, 48V

- Power supply fluctuation range: 85%-110% of the rated voltage

 2. Control Capacity

Contact Capacity: AC 380V/0.19A (resistive load), DC 220V/0.14A

Control Distance: ≤ 100 meters for the standard model (JYB714); ≤ 500 meters for the improved model (JYB714A)

Mechanical Life: ≥ 10⁶ operations; Electrical Life: ≥ 10⁵ operations

 3. Detection Principle

It detects the electrical conductivity of liquids via three electrodes (high, medium, and low water level probes), controls the on/off state of the relay, and thereby achieves automatic water supply or drainage.

 II. Installation and Wiring Guide

 1. Installation Conditions

Ambient Temperature: -5℃ ~ +40℃, with an average temperature of ≤ 35℃ over 24 hours

Installation Method: Fixed vertically or horizontally; avoid environments with vibration and corrosion

Probe Requirements:

  - Use 1~1.5 mm² copper-core rigid insulated wires, with 5 mm of insulation stripped off at the end immersed in liquid.

  - If the water tank is made of metal, the probes must be insulated from the tank wall.

  - The recommended distance between the high, medium, and low probes is ≥ 5 cm to prevent false triggering.

 2. Wiring Method

Power Terminals: Connect terminals ① and ⑧ to the control power supply (matching AC/DC voltage).

Probe Terminals: Connect terminal ⑤ to the high water level probe, terminal ⑥ to the medium water level probe, and terminal ⑦ to the low water level probe (common terminal).

Output Terminals: Terminals ② and ③ are used for water supply control; terminals ③ and ④ are used for drainage control (terminal ③ is the common terminal).

High-Power Loads: If the water pump power exceeds 200W, an AC contactor is required for extended control.

 3. Typical Scenario Wiring Examples

Water Supply Mode: Place the low water level probe (terminal ⑦) at the bottom of the tank; the medium water level probe (terminal ⑥) serves as the start point, and the high water level probe (terminal ⑤) serves as the stop point.

Drainage Mode: The high water level probe (terminal ⑤) triggers drainage, and the medium water level probe (terminal ⑥) stops drainage.

 III. Troubleshooting and Maintenance

 1. Common Issues and Solutions

Relay Not Working:

  - Check if there is voltage at power terminals ① and ⑧, and whether the fuse is blown.

  - Test if the probe connecting wires are open or short-circuited, and clean the oxide layer on the probes.

Frequent Contact Chattering:

  - Check if the power supply is stable, and whether the probe spacing is too small or the liquid conductivity is insufficient.

False Operation:

  - Prevent the probes from contacting the metal tank wall; route signal wires separately from high-voltage wires.

 2. Maintenance Recommendations

- Regularly clean dirt from the probe surface to prevent a decrease in conductivity.

- Disconnect the power supply before long-term shutdown, and store the relay in a dry environment.

 IV. Precautions

 1. Application Scope

- Suitable for conductive liquids such as tap water and lightly polluted sewage; not suitable for oil, pure water, or high-viscosity liquids.

 2. Safe Operation

- Installation and maintenance must be performed by professional electricians and carried out after power-off.

- When the length of the probe signal wire exceeds 500 meters, shielded wires must be used and the sensitivity should be reduced.

 3. Alternative Model

JYB714A: Improved model with longer control distance (≤ 500 meters) and enhanced anti-interference capability.

 V. Price and Purchase Channel

Reference Price: Approximately 200-300 RMB for the standard model (JYB714); approximately 300-500 RMB for the improved model (JYB714A).

Purchase Channel: Contact via WhatsApp: 0086-13811255435.

VI. Warranty and After-Sales Service

Warranty Period: Refer to industry standards, usually 1 year (subject to the product manual or official policy).

Technical Support: Wiring diagrams and troubleshooting guidance can be obtained through the Delixi official website or customer service hotline.

With proper installation and maintenance, the JYB714 liquid level relay can effectively improve the automation level of water level control, reduce manual management costs, and is widely used in agricultural irrigation, industrial water treatment, and domestic water supply systems.