QDY30A-B Submersible Water Level Transmitter

High Precision ±0.5% FS

Imported diffused silicon chip, ultra-low temperature drift

Stable readings, reduce repeated site calibration costs

QDY30A-B submersible level transmitter features an imported diffused silicon chip to deliver stable ±0.5%FS measuring accuracy with minimal temperature drift. This reliable 4-20mA water level sensor eliminates unstable readings that cause frequent on-site calibration for wastewater tanks, reservoirs and industrial storage tanks. Accurate steady data prevents PLC false triggers and cuts repetitive maintenance labor costs. For long-term industrial liquid level monitoring, this high precision submersible level probe stabilizes your automatic control system and lowers ongoing operational expenses year-round.

IP68 Sealed | 316L Stainless Steel Probe

Multi-layer waterproof ring, anti-corrosion for sewage & weak chemical liquid

Long-term fully submersible service life

Our QDY30A-B sewage level transmitter uses a robust 316L stainless steel probe with multi-layer sealing rings to achieve full IP68 waterproof grade. This corrosion-resistant submersible level probe works steadily in sewage, brackish water, weak acid and weak alkali liquid for water treatment, chemical plants and irrigation projects. Ordinary level sensors easily corrode and leak after long submersion, requiring frequent replacements. This durable waterproof level transmitter extends service life, reduces spare part costs and supports uninterrupted 24/7 liquid level monitoring on site.

Drop-in Installation, Multi-signal Output

No tank drilling, DC24V power, 4-20mA / RS485 / 0-10V optional

Direct match with PLC, DCS and display meters

The QDY30A-B drop-in submersible level sensor brings hassle-free installation without tank drilling or welding work. This 24VDC level transmitter supports 4-20mA, RS485 and 0-10V output signals, fully compatible with industrial PLC, DCS and digital display meters. Complex mounting wastes construction time and raises labor costs for water tank and well monitoring projects. This plug-and-play water level probe shortens project construction periods, cuts engineering fees and connects seamlessly to your existing automatic monitoring system without extra modification.

Working Principle Diagram