SEGMENsensor manufactures float switches, submersible transmitters, ultrasonic non-contact sensors, and coolant level sensors for CDU liquid-cooling systems. Custom output, housing, and private-label OEM from 10 pcs.
A liquid level sensor detects or measures the level of a liquid inside a tank, vessel, or reservoir. SEGMENsensor manufactures five main types: magnetic float level switches for point detection, submersible hydrostatic transmitters for continuous 4-20mA measurement, ultrasonic non-contact sensors for corrosive or foam-laden liquids, capacitive level switches for conductive/non-conductive fluids, and coolant level sensors specifically designed for CDU data center liquid-cooling systems. All models are CE certified, IP67 rated, and available for OEM custom configuration.
Float switches to submersible transmitters — all OEM-configurable with custom cable, output, and housing material.
All models OEM-configurable. Contact us for ATEX, HART, or IO-Link variants.
| Parameter | SFL Float Switch | SLS Submersible Transmitter | SEU Ultrasonic |
|---|---|---|---|
| Measurement Principle | Magnetic float + reed switch | Hydrostatic pressure | Ultrasonic transit-time |
| Measurement Type | Point level (ON/OFF) | Continuous (analog) | Continuous (analog) |
| Range | Tank depth up to 10 m (multi-float rod) | 0.5 m – 200 m H₂O column | 0.25 m – 15 m |
| Accuracy | N/A (switch) | ±0.1% to ±0.5% FS | ±0.3% FS |
| Output Signal | Relay / SSR / 4-20mA (multi-float) | 4-20mA / 0-10V / RS-485 Modbus | 4-20mA / 0-10V / RS-485 / Relay |
| Supply Voltage | AC 230V / DC 12–36V | DC 12–36V (2-wire 4-20mA) | DC 12–36V |
| IP Rating | IP67 / IP68 | IP68 (continuous) | IP67 |
| Temp. Range (Liquid) | -40°C to +120°C (HT: +150°C) | -20°C to +80°C | -20°C to +70°C (medium) |
| Housing Material | PP / PVDF / SUS 316L | SUS 316L / Titanium | ABS / SUS 316L (probe) |
| Process Connection | Side entry / top entry / flanged | Cable-suspended / threaded G½ | G¾ / G1 / flanged |
| Hazardous Area | ATEX II 2G (option) | ATEX II 2G (option) | Safe area standard |
| Certifications | CE, RoHS, IP68 | CE, RoHS, IP68 | CE, RoHS, IP67 |
| MOQ | 10 pcs | 10 pcs | 10 pcs |
| Lead Time | 2–3 weeks | 2–3 weeks | 3–4 weeks |
Three proven measurement principles — choose by application, media, and accuracy requirement.
From domestic water tanks to 50,000-litre industrial process vessels — SEGMENsensor supplies custom water tank level sensors and submersible level transmitters for OEM equipment builders worldwide.
SEGMENsensor's float level switches and ultrasonic non-contact sensors are widely used as water tank level sensors in building water supply systems, cooling tower make-up tanks, rainwater harvesting tanks, and fire suppression reservoirs.
For continuous level measurement in industrial process tanks, our submersible level transmitter (SLS series) converts hydrostatic pressure to a 4-20mA signal linearly proportional to liquid depth. Suitable for 0.5 m to 200 m, in water, acids, alkalis, fuels, and slurries.
From oil & gas storage to data center liquid cooling — we specify the right sensor for your media and environment.
As AI server racks exceed 100 kW per rack, direct liquid cooling via CDU (Coolant Distribution Unit) has become the standard. SEGMENsensor offers non-contact coolant level sensors designed for CDU reservoir monitoring — a globally underserved application with zero dedicated Chinese OEM sensor pages currently online.
Custom bracket, cable, and connector available for OEM rack integration. NDA on request.
SEGMENsensor is a direct factory — not a trading company. Our Shenzhen facility has manufactured liquid level sensors since 2019, with dedicated R&D for float switches, hydrostatic transmitters, and ultrasonic sensors. We supply OEM equipment builders across oil & gas, water treatment, semiconductor, HVAC, and data center liquid cooling markets in 30+ countries.
PP / PVDF / 316L SS / Hastelloy wetted parts. Output: 4-20mA, 0-10V, RS-485 Modbus, HART, IO-Link on request.
Custom logo on housing, custom color, custom label insert. Private-label datasheet and box available from 50 pcs.
Full CE Declaration of Conformity, RoHS certificate, and ATEX (II 2G Ex d) available for hazardous area OEM projects.
Standard configurations ship in 2–3 weeks. Custom housing or output options 3–5 weeks. Expedited available for volume orders.
Same IP67 rating and 4-20mA accuracy — at a fraction of the landed cost, with shorter lead times and direct engineering support.
| Comparison Factor | SEGMENsensor (Factory Direct) | Imported Premium Brands |
|---|---|---|
| Manufacturing Location | Shenzhen, China — direct factory | Europe / USA / Japan (resold in China) |
| MOQ | 10 pcs (samples: 1 pc) | 50–200 pcs standard |
| OEM Customization | Full custom: housing, output, cable, label | Limited — catalog models only |
| Lead Time | 2–3 weeks standard | 6–14 weeks (import + distribution) |
| Price | 40–70% lower landed cost | High — brand premium + import duty |
| Engineering Support | Direct factory engineers, 24h RFQ | Distributor-mediated, slow NRE |
| Certifications | CE, RoHS, ATEX, ISO 9001:2015 | CE, ATEX (limited OEM documentation) |
| ATEX Option | Available on request (10 pcs MOQ) | Usually available, high minimum |
Questions from OEM buyers about liquid level sensors, selection, and custom OEM orders.
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