DAQCN Float Level Switch Fully automatic liquid controller water level controller Liquid level switch

Quick Detail:

1.Level controller,level switch

2.For control of ordinary purified water or sewage water

Description:

TBL7-B1 Liquid Level Controller: The Precision Guardian for Reliable and Safe Fluid Management

In the vast landscape of industrial processing, water treatment, agriculture, and building management, the accurate and reliable control of liquid levels is a fundamental operational requirement. From preventing tank overflows and pump dry-running to ensuring precise dosing and maintaining reservoir volumes, the consequences of failure range from costly spills and equipment damage to complete process shutdown. Traditional mechanical float switches, while common, are prone to mechanical wear, fouling, and limited flexibility. The TBL7-B1 Liquid Level Controller represents a significant technological advancement, offering a solid-state, electrode-based solution for robust, maintenance-free level detection and control. This sophisticated electronic relay serves as the intelligent interface between simple conductivity probes and critical fluid-handling equipment, providing a reliable, precise, and safe method for automating liquid management systems with unparalleled ease of integration and durability.

Advanced Electrode-Based Sensing: Simplicity Meets Reliability

At the core of the TBL7-B1's functionality is its use of conductivity-based sensing via external electrodes. This method involves placing insulated electrodes at desired high and/or low-level points within a tank or sump. The controller applies a safe, low-energy AC signal between these electrodes. When the liquid rises to contact the electrodes, it completes a circuit, signaling the controller to change the state of its output relay. This principle offers distinct advantages over mechanical alternatives: there are no moving parts to jam or wear out, it is immune to issues with sludge or viscous fluids that can foul floats, and the setpoints are changed simply by repositioning the electrodes, offering infinite adjustability without opening the control panel.

Engineered for Safety and Signal Integrity

A paramount concern in any electronic level control system is safety, particularly when electrodes are immersed in potentially conductive liquids. The TBL7-B1 is meticulously designed to eliminate risks.

· Intrinsically Safe Signal: The device utilizes a very low-power AC signal for detection, with a maximum interelectrode voltage of AC 10V and an interelectrode current of less than 0.1mA. This intrinsically safe design prevents any risk of sparking, electrolysis, or corrosion at the probe tips, making it suitable for use with a wide variety of liquids and in potentially hazardous environments.

· Effective Noise Immunity & Long-Distance Capability: The AC sensing signal provides excellent immunity to polarization and electrolytic effects that can plague DC systems. Furthermore, the controller supports a substantial maximum cable length of 100 meters between itself and the sensing electrodes. This allows for remote installation of the control unit in a protected electrical cabinet while the probes are located far away in tanks, pits, or outdoor reservoirs, greatly simplifying system design and maintenance access.

Robust Performance and Swift, Durable Output

Built for continuous duty in industrial settings, the TBL7-B1 ensures dependable operation and long service life.

· Fast Response and Clear Indication: The controller features a rapid maximum response time of 400ms, ensuring timely reaction to changing level conditions. A bright red LED provides immediate visual confirmation of the output relay's status (energized or de-energized), facilitating quick diagnostics.

· Reliable Control Interface: The unit is equipped with a 1 SPDT (Single Pole Double Throw) output relay rated for 1A at 250V AC (AC1). This contact is perfectly suited for directly switching the coil of a contactor, a small pump motor starter, or an alarm indicator, providing a solid and reliable link between the sensing logic and the field device. The relay is engineered for exceptional longevity, with a mechanical life of 10 million operations and an electrical life (AC1) of 1 million operations.

Universal Integration and Industrial-Grade Construction

Designed for seamless adoption into any control architecture, the TBL7-B1 offers exceptional flexibility and resilience.

· Universal Power Supply: It accepts a wide AC/DC control voltage range of 24-240V at 50/60Hz, with an operational tolerance of -15% to +10%. This universal compatibility means a single model can be deployed in panels using 24VDC PLC systems, 110VAC control circuits, or 240VAC mains power, drastically simplifying inventory and installation.

· Compact and Durable Design: The controller boasts a compact footprint of 95.5mm x 18mm x 64mm for easy mounting on a standard 35mm DIN rail (EN/IEC 60715). It can be installed in any position and accepts solid wire up to 2.5mm². With an IP20 protection degree and a design compliant with Pollution Degree 2, it is built for the environment of a standard industrial enclosure. It operates reliably across an operating temperature range of -20°C to +55°C.

Critical Applications Across Diverse Industries

The versatility and reliability of the TBL7-B1 make it an ideal solution for countless level control scenarios:

· Water and Wastewater Management: Controlling sump pumps in lift stations, managing fill/drain cycles in treatment tanks, and preventing overflow in clarifiers or storage reservoirs.

· Industrial Process Control: Maintaining chemical levels in etching or plating baths, controlling coolant levels in machining centers, and managing lubricant reservoirs.

· Commercial and Residential Buildings: Automating domestic water supply pumps, controlling condensate pumps in HVAC systems, and managing water levels in decorative fountains or swimming pools.

· Agriculture and Irrigation: Monitoring and controlling water levels in storage tanks, troughs, and irrigation supply basins.

Conclusion:

The Intelligent, Set-and-Forget Solution for Fluid Control

The TBL7-B1 Liquid Level Controller transcends the limitations of mechanical control methods, delivering a smarter, safer, and more reliable approach to fluid management. By leveraging safe, electrode-based sensing with a robust industrial relay output, it provides a perfect blend of simplicity, precision, and durability. Its universal power compatibility, long-distance sensing capability, and compact DIN-rail design make it exceptionally easy to integrate into both new and existing systems. For facility managers, it reduces maintenance headaches and prevents costly fluid-related incidents. For system integrators, it offers a dependable, standardized component that simplifies design and ensures consistent performance. In the essential task of managing liquids, the TBL7-B1 stands as a vigilant, unwavering electronic sentinel—ensuring levels are always right, pumps are always protected, and processes flow smoothly.

Applications:

TBL7-B1 For control of ordinary purified water or sewage water,such as water tank,water pond,water pool etc.

Specifications:

Competitive Advantage:

Advantages of Wenzhou DAQUAN Electric Co., Ltd

1. Innovation Leadership

With 258 patents and 27 years of industry experience, we lead in R&D of industrial control devices like relays and timers, ensuring cutting-edge product performance.

2. Global Certifications

Our products hold CE, ROHS, IEC, TUV certifications plus ISO9001, meeting strict international standards for seamless global market access.

3. Scale Supply Stability

Backed by a 7,800㎡ factory, 499-strong team, and 70M RMB annual output, we guarantee efficient production and timely delivery for bulk orders.