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We are pleased to introduce our fully automatic control liquid chlorine equipment, manufactured by Tianjin ZhuoLiNeng (ZLN) Technology Co., Ltd, a professional manufacturer with extensive experience in chlorination systems. This equipment integrates PLC-based automation and an IP65 waterproof enclosure to deliver precise, safe, and reliable chlorine dosing for water treatment, disinfection, and industrial processes. Built for demanding environments, it helps operators achieve consistent water quality while reducing manual intervention and operational risk.
Key Features & Benefits
PLC Automatic Control: The programmable logic controller manages dosing cycles, flow rates, and alarm triggers automatically, ensuring accurate chlorine residual levels with minimal operator input.
IP65 Waterproof Enclosure: The robust sealed housing protects internal electronics from water spray, dust, and humidity, making it suitable for outdoor and wash-down installations.
Fully Automatic Operation: Once configured, the system runs continuously, adjusting chemical feed based on real-time signals from flow meters or chlorine analyzers (optional).
Enhanced Safety: Liquid chlorine handling is safer with automatic shut-off, leak detection, and remote monitoring capabilities (customizable).
Durable Construction: Wetted parts are made of corrosion-resistant materials such as PVC or stainless steel, selected to withstand chlorine's aggressive nature.
Easy Integration: Standard analog and digital I/O interfaces allow connection to SCADA or existing control systems, simplifying plant upgrades.
Customizable Capacity: Dosing capacity, pump configuration, and control parameters can be tailored to meet specific project requirements.
Working Principle
The PLC receives signals from flow meters and optional chlorine residual sensors. It continuously compares the measured value with the configured setpoint and adjusts the dosing pump speed or stroke accordingly. If water flow stops or an abnormal residual is detected, the system automatically enters a safety shutdown state. This closed-loop control ensures that the chlorine addition remains stable even when inlet conditions fluctuate.
Technical Specifications
| Control Mode | PLC-based fully automatic |
| Enclosure Protection | IP65 waterproof |
| Dosing Pump | Diaphragm or metering pump (optional) |
| Flow Range | Customizable to project |
| Power Supply | 220V/380V AC, 50/60Hz |
| Material | Stainless steel / PVC (optional) |
| Display | Touchscreen HMI (optional) |
| Communication | Modbus, 4-20mA (available) |
This equipment is designed for a wide range of applications:
Municipal drinking water and wastewater treatment
Swimming pool and spa disinfection
Cooling tower water treatment
Industrial process water and effluent treatment
Aquaculture and agricultural water disinfection
Operators benefit from reduced chemical waste, lower labor costs, and improved safety compared to manual dosing. The PLC logic can be programmed to maintain chlorine residual within a tight control band, automatically compensating for changes in water flow and chlorine demand. Built-in alarms notify staff of low chemical levels, pump faults, or high residual values, helping to prevent process upsets.
ZLN Technology Co., Ltd is certified, reflecting our commitment to quality management in production and service. We ship our equipment from Tianjin port to markets across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and beyond. Our technical team provides pre-sales consultation, custom engineering, and after-sales support to ensure the system fits your project perfectly.
We understand that every water treatment application is unique. That is why our liquid chlorine equipment is offered with flexible options: stainless steel or PVC wetted parts, different pump capacities, communication protocols, and mounting configurations. Whether you need a compact unit for a small community pool or a large-capacity skid-mounted system for a municipal plant, we can supply a solution tailored to your site conditions.
With years of manufacturing experience and a dedicated engineering department, ZLN ensures that every unit is tested before delivery. The PLC programs are pre-validated, and all electrical components are arranged in a logical, accessible layout to simplify maintenance. Our goal is to provide equipment that is not only efficient but also easy to operate and maintain over its lifetime.
Quality & Compliance
Our factory operates under an certified quality management system. Each unit undergoes a thorough inspection during production, including electrical testing, function simulation, and waterproof checks. While certifications beyond are available upon request, we ensure that the basic safety and performance requirements of international industrial standards are met. The equipment is designed with fail-safe features such as emergency stop and flow interruption protection.
Why Choose ZLN?
factory-direct pricing and engineering support
customizable solutions for diverse applications
professional export experience with global shipping
responsive after-sales service and spare parts support
We invite you to discuss your project requirements with our team. With our robust PLC-controlled liquid chlorine equipment, you can achieve precise disinfection, increase operational safety, and reduce manual workload. Contact us today for a quote or technical consultation.
FAQ
1. What is the delivery time for this liquid chlorine equipment?
Our standard lead time is approximately 2-4 weeks after receiving the order, depending on the configuration and availability of components. We can provide a more accurate schedule when you submit your requirements.
2. Can the PLC be programmed remotely?
Yes, the PLC can include remote communication modules such as Modbus, Ethernet, or 4-20mA outputs (available upon request), allowing integration with SCADA and remote monitoring systems.
3. Is the IP65 enclosure enough for outdoor installation?
IP65 protects against water jets and dust ingress, which is suitable for most outdoor applications when the unit is mounted with proper ventilation. For extreme weather conditions, optional weather protection covers can be provided.
4. What materials are compatible with liquid chlorine?
We offer wetted parts in PVC, PTFE, and stainless steel configurations, selected based on the chemical concentration and application temperature. These materials provide long-term resistance to chlorine corrosion.
5. Can the dosing capacity be adjusted?
Absolutely. The PLC continuously adjusts the dosing pump speed or stroke from 0 to 100% to match the water flow and chlorine demand. The set points are easily changed through the HMI or via external analog signals.
6. Do you provide installation and commissioning support?
Yes, we can offer remote commissioning guidance or on-site supervision services (subject to travel conditions and service fees). Detailed user manuals and wiring diagrams are included with every unit.
7. How does the system ensure safety when handling chlorine?
The system includes features such as flow interlock, gas detection sensor interface (optional), emergency stop, and alarm output. If an abnormal condition occurs, the PLC automatically shuts down the dosing pump and activates an audio/visual alarm.
8. What is the warranty period?
We offer a 12-month warranty against manufacturing defects for the entire unit. The PLC controller and major electrical components are covered under the same warranty. Spare parts are available for fast replacement.
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