The FH-403 Sump Level Switch is an industrial-grade magnetic float level sensor independently developed for sump pit liquid level monitoring and automatic drainage control. Optimized for harsh industrial working conditions, this vertical float switch adopts mature magnetic reed induction technology, featuring stable triggering, strong anti-interference ability and excellent environmental adaptability. It is specially designed for industrial sump tanks, wastewater sumps and industrial circulating water pools, realizing automatic pump start-stop, overflow prevention and dry-run protection. With an integrated fully sealed industrial waterproof structure and high-strength anti-impact housing, the FH-403 can operate stably for a long time in turbid, humid and vibration-prone industrial environments. It supports standard fixed-level control and personalized customized upgrades, solving frequent liquid level monitoring and drainage control pain points in industrial production scenarios.
Product Features
Industrial-Grade Anti-Interference & Stable Triggering
Built with high-sensitivity customized reed switch components, the FH-403 sump level switch delivers precise and consistent level triggering. It effectively resists interference from industrial equipment vibration, water flow turbulence and tiny suspended impurities, avoiding false triggers and missed signals that commonly occur with ordinary level switches, ensuring 24/7 stable operation in complex industrial environments.
Heavy-Duty Waterproof & Anti-Fouling Structure
Adopting one-piece seamless hermetic sealing technology, the whole machine achieves IP68 full waterproof rating with no exposed internal circuits. The smooth anti-adhesion housing surface prevents sludge, oil stains and industrial suspended matter from adhering, avoiding sensor jamming and failure, perfectly adapting to turbid industrial sump water and mixed liquid working conditions.
Ultra-Long Service Life & Maintenance-Free Operation
The non-contact magnetic induction working mode eliminates mechanical friction and wear during operation. It supports over 1.2 million stable switching cycles, far exceeding ordinary mechanical level switches. It requires no daily calibration or maintenance, greatly reducing industrial equipment downtime and later operation costs.
Wide Compatibility & Industrial System Adaptability
It outputs standard industrial switch signals, perfectly compatible with industrial sump pumps, drainage control cabinets, PLC industrial control systems and alarm linkage devices. It supports multi-scene control functions including automatic drainage, high-level alarm and low-level pump shutdown, meeting automatic control demands of various industrial liquid systems.
Working Principle
The FH-403 sump level switch operates based on liquid buoyancy and non-contact magnetic induction principle, consisting of a sealed non-magnetic probe rod and a movable magnetic float. Installed vertically in industrial sump pits and liquid storage tanks, the magnetic float floats on the liquid surface and moves up and down synchronously with liquid level changes. When the industrial sump liquid level rises to the preset high threshold, the float's built-in permanent magnet triggers the internal reed switch, closing the circuit to start the sump pump for automatic drainage. When the liquid level drops to the preset low threshold, the magnetic induction fails, the switch resets to cut off the circuit, and the pump stops working. This automatic cycle realizes closed-loop intelligent control of industrial sump liquid level, effectively preventing liquid overflow and pump dry-burning failures.
Product Parameters
|
Parameter Item |
Technical Specification |
|
Product Model |
FH-403 |
|
Product Type |
Industrial Sump Float Level Switch |
|
Detection Principle |
Magnetic Reed Switch Induction |
|
Detection Accuracy |
±2.5mm |
|
Working Voltage |
DC 5V-30V / AC 110V-220V |
|
Max Switching Current |
1A |
|
Working Temperature |
-30℃ ~ +85℃ |
|
Protection Grade |
IP68 Fully Waterproof |
|
Housing Material |
Industrial ABS / 304/316 Stainless Steel |
|
Switch State |
Normally Open / Normally Closed (Optional) |
|
Service Life |
≥1,200,000 Switching Cycles |
Application Fields
The FH-403 sump level switch is specially designed and optimized forall types of industrial production scenarios, focusing on industrial sump pit drainage and liquid level automatic control. It is widely applicable to factory workshop sump pits, industrial wastewater collection tanks, chemical production liquid storage tanks, mechanical equipment cooling water pools, food and beverage processing water systems, pharmaceutical factory sewage sumps, mining underground drainage systems, and industrial circulating water treatment equipment. It stably monitors and controls industrial wastewater, cooling water, oily sewage and low-corrosive process liquids, providing reliable automatic drainage and liquid level safety protection for various industrial production links, effectively avoiding production shutdown risks caused by liquid overflow and equipment failure.
Installation Method
solution, which is firm, shock-resistant and suitable for most industrial sump pits and tank equipment. Before installation, confirm the high and low liquid level control points according to industrial drainage requirements, reserve matching mounting holes on the top of the sump pit or tank body, and penetrate the sensor probe vertically downward. Fix the sensor with industrial sealing gaskets and fastening nuts to ensure tight waterproof and shockproof performance. Guarantee the magnetic float moves up and down freely without contact or jamming with tank walls and internal equipment. Complete wiring access according to industrial control circuit standards, and test the liquid level triggering sensitivity and pump linkage effect. Meanwhile, it supports customized side mounting, suspension mounting and bracket fixing to adapt to special industrial equipment and narrow space installation environments.
Customizable Options
1. Structural & Size Customization
Support customized probe rod length, float volume and stroke height to adapt to different depths of industrial sump pits and storage tanks. Custom installation brackets and fixing methods are available to solve the installation limitations of special industrial equipment and narrow space scenarios.
2. Electrical & Control Parameter Customization
Customizable switch output state (normally open/normally closed), wire length, voltage grade and trigger hysteresis difference. It can match different industrial pump units and PLC control systems to meet personalized linkage control requirements of industrial production lines.
3. Material & Anti-Corrosion Customization
Optional 316 stainless steel, fluorine-plated anti-corrosion materials and high-temperature resistant engineering plastics. It can adapt to corrosive liquids such as chemical wastewater and high-temperature industrial circulating water, expanding the adaptability of extreme industrial working conditions.
Why Choose Us
Industrial-Grade Harsh Environment Adaptability: Designed for complex industrial scenarios, it features anti-vibration, anti-fouling, waterproof and anti-corrosion performance, stably coping with turbid liquid, equipment vibration and high and low temperature industrial environments.
High Stability & Ultra-Long Service Life: Adopting non-contact magnetic induction technology with zero mechanical wear, it achieves millions of stable operations, reducing equipment replacement frequency and industrial production maintenance costs.
Strong Customization & Scenario Matching: Flexible multi-dimensional customization meets the personalized needs of different industries such as chemical, machinery, food and mining, realizing precise matching of various industrial sump liquid level control systems.
Professional Industrial After-Sales Service: We provide professional industrial product selection guidance, on-site installation technical guidance, 24-hour technical support and long-term after-sales warranty services, quickly solving various on-site application problems for industrial customers.
FAQ
Q: What industrial scenarios is the FH-403 sump level switch suitable for?
A: It is specially used for industrial production scenarios, widely applicable to factory sump pits, industrial wastewater tanks, cooling water pools, chemical liquid storage tanks, mining drainage systems and other industrial liquid level monitoring and automatic drainage control scenarios, adapting to various non-strong corrosive industrial liquids.
Q: Can this switch work stably in turbid and oily industrial sewage?
A: Yes. The product adopts smooth anti-fouling housing and fully sealed isolation design, which is not easy to adhere to sludge and oil stains. It has strong anti-interference ability and can operate stably for a long time in turbid industrial sewage and mixed liquid environments.
Q: Does the FH-403 support high-power industrial pump linkage?
A: The standard version supports conventional industrial pump linkage, and we can customize high-current and high-voltage models according to customers' high-power pump equipment demands to meet diverse industrial supporting requirements.
Q: Is the product suitable for long-term continuous industrial operation?
A: Absolutely. With an ultra-long service life of over 1.2 million switching cycles and maintenance-free design, it can support 24/7 continuous uninterrupted operation of industrial production lines, suitable for long-term and high-frequency industrial working conditions.
Q: Can it be customized for special industrial working conditions?
A: Yes. We provide comprehensive customized services including probe size, housing material, electrical parameters and installation methods, aiming at high temperature, slight corrosion, narrow installation space and other special industrial working conditions to create exclusive solutions.
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