Resolution: 5mm, 7mm, 10mm, 21mm, 35mm
Mounting: BSP 1 1/4", BSP 1 1/2" thread in, SAE-5 hole flange, 6-hole flange, etc.
Application: fuel, water, or other liquid tank
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The 0-190ohm or 240-33ohm analog output liquid level sensor represents a highly dependable solution for continuous fluid monitoring. Crafted with a substantial, cool-to-the-touch stainless steel exterior, this device is engineered to deliver exact fluid level readings across demanding environments. When handling the unit, the weight of the thick-walled steel tube and the smooth, frictionless glide of the float immediately convey its industrial-grade construction. It is designed to replace fragile mechanical senders with a solid-state electronic architecture that eliminates moving parts aside from the float itself. This design minimizes mechanical wear, ensuring that operators receive a continuous, uninterrupted analog signal reflecting the precise liquid volume remaining in the tank, whether it contains diesel, potable water, or agricultural chemicals.

Constructed from premium 304 or 316-grade stainless steel, the main stem of this level sensor provides an impenetrable barrier against harsh chemical agents and corrosive moisture. The metal surface features a brushed, non-porous finish that resists the buildup of sludge or algae, making maintenance remarkably simple. Depending on the specific fluid dynamics of your operation, the sensor utilizes either a dense NBR (Nitrile Butadiene Rubber) float or a matching stainless steel float. The NBR variant offers exceptional buoyancy and resistance to petroleum-based fuels, while the stainless steel float provides absolute structural integrity when submerged in drinking water or aggressive chemical mixtures. This carefully selected combination of materials guarantees that the sensor will not degrade, rust, or swell, maintaining its original calibration even after years of continuous submersion.
Accurate fluid management relies on granular data, and this sensor delivers precisely that through its high-resolution internal array. Operators can select between a 10mm or 21mm resolution configuration, dictating the physical distance between internal contact points. The 10mm option provides an incredibly smooth, near-continuous data curve, ideal for shallow tanks where every millimeter of fluid translates to significant volume. As the float glides over the stem, it triggers a fluid transition in the output signal, available in standard 0-190ohm or 240-33ohm resistance ranges, as well as voltage or current variations. This stable analog output integrates flawlessly with standard dashboard gauges, programmable logic controllers, and digital monitoring displays. The absence of signal noise or erratic jumping ensures that your control panels display a steady, trustworthy gauge reading, preventing false alarms and operational downtime.

At the heart of this heavy-duty level sender lies advanced, fully sealed Reed Switch technology. Unlike traditional potentiometers that rely on exposed resistive tracks which eventually wear out or foul, the reed switches are hermetically sealed within the stainless steel tube. They are completely isolated from the liquid medium. As the magnetic float travels along the shaft, it silently closes the corresponding switches through magnetic force. This contactless activation method means there is zero friction on the electrical components. Furthermore, the internal circuitry is securely potted, granting the entire assembly outstanding anti-vibration characteristics. Whether installed on a vibrating heavy-duty engine or a vessel navigating turbulent waters, the internal components remain locked in place, preventing the physical shock from translating into signal disruption or mechanical failure.
Installation is engineered to be straightforward and universally adaptable. The primary configuration utilizes the industry-standard SAE-5 hole flange mount, featuring a thick, precisely machined base plate that sits perfectly flat against the tank surface. When secured with the appropriate gasket and bolts, it creates a crushing, leak-proof seal that prevents both liquid escape and vapor emission. For tanks with different interface requirements, the sensor is also available with classic BSP threaded connections or alternative 6-hole flange patterns. Recognizing that storage vessels come in countless shapes and sizes, the probe length is fully customizable. We provide precise stem lengths ranging from a compact 100mm for auxiliary reservoirs up to a massive 3000mm for deep bulk storage tanks. This dimensional flexibility ensures the float can reach the absolute bottom of the tank, eliminating unmeasured dead zones.

Because of its heavy-duty architecture and versatile output options, this analog level sensor is the definitive choice for a wide spectrum of demanding deployment scenarios. It consistently outperforms standard plastic senders in environments where temperature fluctuations and chemical exposure are daily realities.
| Main Material | 304 or 316 Stainless Steel |
| Float Material | NBR (Nitrile Rubber) or Stainless Steel |
| Resolution Options | 10mm or 21mm |
| Output Signal | 0-190ohm, 240-33ohm, Voltage, Current |
| Mounting Interface | SAE-5 Hole Flange, 6-Hole Flange, BSP Thread |
| Length Range | 100mm to 3000mm (Fully Customizable) |
| Core Technology | Magnetic Reed Switch (Contactless & Anti-Vibration) |
