كيفية توصيل مرحل مستوى السائل

مرحل مستوى السائل هو جهاز يستخدم لمراقبة مستوى السائل والتحكم تلقائيًا في تشغيل/إيقاف الدائرة, commonly applied in automatic water supply or drainage control for water tanks and pools. Its wiring must be determined according to the specific model and function (such as automatic water supply or drainage). Below are general wiring methods and precautions: Liquid，Level Relay，ac contactor wiring diagram，contactor 1p 25a 24vcontactor air conditioner，contactor connection diagram，قواطع for air conditioner，contactor not pulling in，contactor on ac unit，contactor wiring schematic，dc contactor，double pole contactor，electric contactor，how does a contactor work，how to check a contactor，how to wire a contactor，relay and contactor 15ampl，relay contactor，reversing contactor，square d mechanical lighting contactor 4 pole，telemecanique contactor，surge protector

1. Core Components and Terminal Identifications of Liquid Level Relaysسعر مرحلات الحمل الزائد الحراري من سلسلة Chint NXR
2. Main Componentsسعر قاطع الدائرة الكهربائية CHINT

– Power Terminals: Connected to AC power (على سبيل المثال, 220الخامس و).

– Liquid Level Detection Terminals: Connected to liquid level detection electrodes (usually divided into three levels: High H, Medium M, Low L).

– Relay Output Terminals: Include Common (COM), Normally Open (لا), and Normally Closed (نورث كارولاينا) اتصالات, used to control loads such as water pumps.

2. Common Terminal Identifications (Taking a Typical 3-Wire System as an Example)CHINT contactor price

1. Typical Wiring Scenarios and Methods

سيناريو 1: Automatic Water Supply Control (Start the pump when the water level is below the low level, stop when above the high level)

Requirement: Start the water pump when the water level is below the Low (ل) level; stop the pump when the water level reaches the High (H) level.

Wiring Steps:

1. Power Connection:

– Connect the L and N terminals of the liquid level relay to the 220V AC power supply (L to live wire, N to neutral wire).

2. Liquid Level Detection Electrode Connection:

– High Level H: Connect to the high-level detection electrode in the water tank.

– Medium Level M: Connect to the medium-level detection electrode (optional; some models do not require a medium level).

– Low Level L: Connect to the low-level detection electrode in the water tank.

– Common Terminal COM: Connect to the metal shell at the bottom of the water tank (or a separate common electrode).

– Principle: When the water level rises, the electrodes conduct through water, and the relay detects the conduction signal.

3. Relay Output Connection (Controlling the water pump contactor):

– Use Normally Open (لا) اتصالات:

– Connect one end of the water pump contactor coil to the live wire, the other end to the relay’s NO terminal, and the relay’s COM terminal to the neutral wire.

– Logic:

– When the water level is below L, H, م, and L are not conductive, and the relay’s NO contact closes → the pump starts.

– When the water level reaches H, H and COM conduct, and the relay’s NO contact opens → the pump stops.

سيناريو 2: Automatic Drainage Control (Start the pump when the water level is above the high level, stop when below the low level)

Requirement: Start the water pump to drain when the water level is above the High (H) level; stop the pump when the water level is below the Low (ل) level.

Wiring Steps:

1. Power and Detection Electrode Connection: Same as automatic water supply (ل, N to power, H, م, L to electrodes, COM to common terminal).
2. Relay Output Connection (Controlling the water pump contactor):

– Use Normally Closed (نورث كارولاينا) اتصالات:

– Connect one end of the water pump contactor coil to the live wire, the other end to the relay’s NC terminal, and the relay’s COM terminal to the neutral wire.

– Logic:

– When the water level is below L, H, م, and L are not conductive, and the relay’s NC contact remains closed → the pump does not start (normal state).

– When the water level reaches H, H and COM conduct, and the relay’s NC contact opens → the pump starts draining.

– When the water level drops below L, H is disconnected, and the NC contact resets to closed → the pump stops.

ثالثا. Key Precautions

1. Electrode Installation Requirements:

– Detection electrodes must be vertically installed on the inner wall of the water tank, with heights corresponding to High, واسطة, and Low levels (H > م > ل).

– Electrode materials must be conductive (على سبيل المثال, stainless steel) and avoid direct contact with the water tank’s metal shell (unless the shell serves as the common terminal).

2. Contact Capacity Matching:

– Liquid level relay contacts have a low current capacity (usually within 5A). Use a contactor to control high-power water pumps to avoid direct connection to the load.

3. Power and Voltage Matching:

– Confirm the rated voltage of the liquid level relay (على سبيل المثال, 220V or 380V) to prevent damage from incorrect wiring.

4. Insulation and Anti-Interference:

– Use shielded or insulated wires for detection electrode leads, keeping them away from high-power lines to prevent interference and false operations.

5. Manual Testing:

– بعد الأسلاك, simulate water levels with the power off (على سبيل المثال, short-circuit H and COM with a wire) to observe whether the relay indicator lights and contact actions are normal.

1. Common Faults and Troubleshooting

1. Reference Wiring Diagrams

Automatic Water Supply Control (NO Contacts)

Explanation: When the water level is below L, NO closes → contactor coil energizes → pump starts; when the water level reaches H, NO opens → pump stops.

Automatic Drainage Control (NC Contacts)

Explanation: When the water level is above H, NC opens → contactor coil de-energizes → pump starts; when the water level is below L, NC closes → pump stops.

ملخص

For liquid level relay wiring, first clarify the control objective (water supply or drainage), then select corresponding NO/NC contacts, and ensure correct connection of detection electrodes and power supply. Always power off before operation and refer to the product manual to avoid equipment damage or safety hazards due to incorrect wiring.