The FH-405 Stainless Steel Float Level Switch is a heavy-duty, fully metal liquid level control sensor specially built for harsh and complex working conditions in sanitation, agriculture, and special industrial scenarios. Adopting full 304/316 stainless steel integrated molding, this float level switch abandons fragile plastic structures, delivering superior corrosion resistance, impact resistance and high temperature durability. Powered by stable magnetic reed induction technology, it achieves accurate and repeatable liquid level detection in turbid sewage, irrigation water, and lightly corrosive mixed liquids. With an IP68 fully sealed waterproof design, it supports long-term submerged outdoor operation and resists extreme weather erosion. Available in standard specifications and fully customizable structures, the FH-405 perfectly solves unstable monitoring problems of ordinary sensors in sanitation cleaning equipment, farm irrigation facilities and special fluid storage tanks, realizing reliable automatic liquid level control all year round.
Product Features
Full Stainless Steel Heavy-Duty Structure
The whole body adopts integrated 304/316 stainless steel structure, featuring strong impact resistance, compression resistance and deformation resistance. It avoids aging, cracking and corrosion problems of plastic float switches, and can withstand long-term outdoor wind, rain and sun exposure, perfectly adapting to harsh open-air working environments of sanitation and agricultural facilities.
Excellent Corrosion & Fouling Resistance
The polished smooth stainless steel surface effectively prevents sludge, algae and suspended impurities from adhering, solving the common jamming and failure problems of ordinary float switches in turbid sewage and farm irrigation water. It resists weak acid and weak alkali liquid corrosion, adapting to diverse special fluid monitoring scenarios.
Wide Environmental Adaptability & Weather Resistance
With ultra-wide temperature resistance and IP68 full waterproof grade, the sensor operates stably in low-temperature frost, high-temperature heat and humid outdoor environments. It has strong anti-interference ability against water flow impact and equipment vibration, ensuring consistent detection accuracy in complex field working conditions.
Wear-Free Operation & Ultra-Long Service Life
Adopting non-contact magnetic induction triggering with no mechanical friction and wear, it supports millions of stable switching cycles. It requires no frequent cleaning and daily maintenance, greatly reducing manual inspection and replacement costs for outdoor sanitation and agricultural equipment.
Working Principle
The FH-405 stainless steel float level switch operates based on liquid buoyancy and magnetic coupling induction principle. The all-metal equipment consists of a fixed stainless steel probe rod and a movable stainless steel magnetic float. Installed vertically in sanitation sewage tanks, agricultural irrigation pools and special liquid storage equipment, the float floats on the liquid surface and moves up and down synchronously with liquid level fluctuations. When the liquid level rises to the preset high limit, the built-in permanent magnet of the float triggers the internal high-sensitivity reed switch to close the circuit, realizing automatic water stop or drainage start. When the liquid level drops to the preset low limit, magnetic induction fails, the switch resets to disconnect the circuit, completing automatic water replenishment or equipment shutdown. This cyclic automatic control realizes unmanned intelligent management of liquid level in outdoor and special scenarios.
Product Parameters
|
Parameter Item |
Technical Specification |
|
Product Model |
FH-405 |
|
Product Type |
Full Stainless Steel Float Level Switch |
|
Detection Principle |
Magnetic Reed Switch Induction |
|
Detection Accuracy |
±3.0mm |
|
Working Voltage |
DC 5V-24V / AC 110V-220V |
|
Max Switching Current |
1A |
|
Working Temperature |
-35℃ ~ +85℃ |
|
Protection Grade |
IP68 Fully Waterproof |
|
Housing Material |
304 / 316 Stainless Steel (Optional) |
|
Applicable Medium |
Sewage, Irrigation Water, Tap Water, Weak Corrosive Liquid |
|
Switch State |
Normally Open / Normally Closed (Optional) |
|
Service Life |
≥1,200,000 Switching Cycles |
Application Fields
The FH-405 stainless steel float level switch is uniquely optimized for sanitation, agriculture and special harsh scenarios, perfectly matching outdoor, dusty and turbid liquid working conditions that ordinary plastic sensors cannot adapt to. In the sanitation industry, it is widely used for garbage truck water tanks, sewage cleaning vehicles, municipal rainwater sumps, and sanitation sewage storage pools for automatic drainage and water level alarm. In agricultural scenarios, it applies to farmland irrigation reservoirs, aquaculture water pools, agricultural water tower replenishment, and greenhouse water circulation systems to stabilize irrigation water supply. In special scenarios, it is suitable for outdoor unattended water storage equipment, marine auxiliary water tanks, and low-corrosive industrial special liquid containers, providing durable and reliable full-time liquid level monitoring and automatic control for various harsh environments.
Installation Method
The FH-405 stainless steel float level switch adoptsvertical top fixed installation as the standard solution, featuring firm fixation, strong shock resistance and no loose deviation in outdoor vibrating environments. Before installation, confirm the high and low liquid level control points according to on-site equipment demands, reserve standard threaded mounting holes on the top of water tanks, pools or equipment. Vertically insert the stainless steel probe into the liquid storage equipment, and fasten it with matching stainless steel gaskets and nuts to ensure overall tightness and waterproof performance. Ensure the stainless steel float moves up and down freely without collision or jamming with tank walls and internal impurities. Complete wiring according to on-site control circuit standards, and test the liquid level triggering sensitivity and equipment linkage effect. It also supports customized side installation, suspension installation and bracket fixing to adapt to special-shaped equipment and limited outdoor installation spaces.
Customizable Options
1. Stainless Steel Material & Structure Customization
Support optional 304 or 316 stainless steel materials to adapt to conventional or slightly corrosive liquid environments. Customizable probe length, float size and thread specification, meeting the installation and depth requirements of different sanitation vehicles, agricultural pools and special storage tanks.
2. Electrical Parameter & Control Logic Customization
Customizable wire length, working voltage, switch state and trigger stroke. It can match different sanitation vehicle control systems, agricultural irrigation automatic control equipment and special industrial control modules to realize personalized level linkage control.
3. Special Scenario Adaptive Customization
Provide customized anti-blocking structure, high wind resistance and anti-vibration reinforcement design for outdoor open-air, muddy water and high-vibration special working conditions, solving the failure pain points of ordinary sensors in extreme scenarios.
Why Choose Us
All-Metal Durable Construction: Full stainless steel integrated structure resists aging, corrosion, impact and weathering, solving the easy-damage problem of plastic sensors in harsh outdoor scenarios and extending service life greatly.
Strong Scenario Adaptability: Professionally optimized for sanitation sewage, agricultural irrigation and special harsh environments, with excellent anti-fouling and anti-interference ability, stable operation in turbid water and vibrating working conditions.
Low Operation & Maintenance Cost: Wear-free non-contact operation and self-anti-fouling design reduce daily cleaning and maintenance work, lowering long-term operating costs for engineering projects and equipment.
Professional Scenario Customization & Support: Targeting sanitation, agriculture and special industrial scenarios, we provide professional selection guidance, on-site installation debugging and long-term after-sales guarantee, solving various harsh environment application problems.
FAQ
Q: What scenarios is the FH-405 stainless steel float switch suitable for?
A: It is mainly applicable to sanitation equipment, agricultural irrigation systems and special harsh scenarios, including sanitation vehicle water tanks, sewage sumps, farmland reservoirs, aquaculture pools, outdoor unattended water storage equipment and low-corrosive special liquid tanks.
Q: Can it work stably in turbid sewage and muddy water?
A: Yes. The polished stainless steel surface is not easy to adhere to sludge and algae, with excellent anti-blocking performance. It can operate stably for a long time in turbid sewage and muddy irrigation water without jamming or failure.
Q: Is the product suitable for long-term outdoor open-air use?
A: Absolutely. The all-stainless steel structure is resistant to wind, rain, sun exposure and temperature alternation, with no aging or cracking. The IP68 full waterproof grade ensures reliable 24/7 outdoor operation all year round.
Q: What is the difference between 304 and 316 stainless steel versions?
A: 304 stainless steel is suitable for conventional water and sewage scenarios with cost-effective performance; 316 stainless steel has stronger corrosion resistance, applicable to slightly corrosive liquids and humid coastal outdoor environments.
Q: Can it be customized for special agricultural and sanitation equipment?
A: Yes. We provide full customization of structural size, material grade, electrical parameters and anti-harsh-environment design, which can perfectly match various special-shaped sanitation equipment and agricultural water storage facilities.
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