WNK IP68 Submersible Water Level Transmitter 4-20mA RS485 for Deep Well River

Product Specification

WNK IP68 0.25%FS High Accuracy Submersible Water Level Transmitter

The WNK8010-TT IP68 Water Level Transmitter is a premium high-precision submersible level sensor delivering 0.25%FS accuracy across measurement ranges from 1 meter to 200 meters water column. With dual 4-20mA analog + RS485 Modbus RTU output and IP68-rated 316L stainless steel construction, it is engineered for the most demanding water monitoring applications including deep wells, river gauging, water treatment plants, oil tanks, and reservoir level measurement.

Key Features

• 0.25%FS High Accuracy: Precision sensing element with advanced digital temperature compensation delivers industry-leading accuracy for critical level monitoring applications
• IP68 Fully Submersible: Hermetically sealed 316L stainless steel housing with double O-ring protection ensures reliable operation at depths up to 200 meters
• Dual Output 4-20mA + RS485: Simultaneous analog and digital communication for integration with PLC, SCADA, and IoT remote monitoring systems
• Wide Range 1-200mH2O: Customizable measurement range from shallow tanks to deep boreholes, with 200%FS overload protection
• Robust Cable Options: PUR (polyurethane) cable for general water, PTFE cable for corrosive chemicals, armored cable for harsh installation environments
• Excellent Stability: ±0.1%FS/year long-term drift ensures years of maintenance-free operation

Designed for Tough Applications

• Deep Well Monitoring: Rugged narrow-diameter 316L probe withstands high pressure at depth, with vented cable for automatic atmospheric pressure compensation
• River & Lake Gauging: IP68 sealed construction resists silt, debris, and water ingress for permanent installation in open water bodies
• Water Treatment Plants: Corrosion-resistant materials and 0.25%FS accuracy ideal for process control in chemical dosing, filtration, and sedimentation tanks
• Oil & Diesel Tanks: Oil-compatible PUR cable and 316L wetted parts for fuel storage and petrochemical tank level measurement

Technical Specifications

Applications

• Deep Well & Borehole: Groundwater level monitoring for water supply, irrigation, and geotechnical surveys
• River & Lake Gauging: Hydrological monitoring stations, flood warning systems, and environmental data collection
• Water Treatment: Chemical dosing tanks, sedimentation basins, filter beds, clear water reservoirs, and sludge thickeners
• Oil & Fuel Tanks: Diesel storage, heating oil tanks, petrochemical process vessels, and fuel depot inventory management
• Reservoir & Dam: Water level monitoring for hydroelectric, municipal water supply, and irrigation reservoirs

Why 0.25%FS Accuracy Matters

• Tighter Process Control: 0.25%FS delivers 2x better accuracy than standard 0.5%FS sensors, enabling precise chemical dosing and pump control thresholds
• Reliable Billing Data: For water utilities and tank farms, higher accuracy means more reliable volume calculations and custody transfer measurements
• Early Leak Detection: Superior resolution enables detection of minute level changes, critical for environmental compliance and leak monitoring
• Reduced Maintenance: ±0.1%FS/year stability with factory temperature compensation eliminates frequent recalibration needs

Quality Assurance

• ISO 9001:2015 certified manufacturer since 2004
• 100% temperature compensated and calibrated with traceable standards
• 48-hour submersed burn-in aging test on every unit
• Individual calibration certificate included with each sensor
• 12-month warranty for non-man-made damages

FAQ

Q: What does 0.25%FS accuracy mean in practice?
A: For a 100m range sensor, 0.25%FS = ±25cm maximum error. At 10m depth, the reading will be accurate within ±2.5cm. Standard 0.5%FS sensors have double this error, which can be critical for precision applications like chemical dosing or custody transfer.

Q: Can this sensor be permanently installed in a river or lake?
A: Yes. The IP68 rated 316L stainless steel construction with PUR or PTFE cable is designed for permanent submersion in open water. The vent tube in the cable provides atmospheric pressure reference for accurate gauge pressure measurement.

Q: Is it compatible with diesel and oil?
A: Yes. WNK8010-TT is available with oil-resistant PUR cable and 316L stainless steel wetted parts. For aggressive chemicals, specify PTFE cable and Hastelloy C diaphragm.

Q: How do I connect to my SCADA or PLC system?
A: The dual output supports both traditional 4-20mA analog input cards and RS485 Modbus RTU digital communication. Modbus register map and communication protocol documentation are provided.

Q: What is the minimum order quantity?
A: We accept orders from 1 piece for sample evaluation. Volume pricing available for 50+ pieces.