WNK ATEX Explosion Proof IP68 Submersible Water Level Sensor 4-20mA for Agricultural Irrigation Deep Well System
WNK ATEX Explosion Proof IP68 Submersible Water Level Sensor for Agricultural Irrigation
The WNK8010-ATEX Explosion Proof Water Level Sensor is a certified intrinsically safe submersible level transmitter designed for hazardous area applications in agricultural irrigation, deep well pumping stations, and groundwater monitoring. Featuring ATEX Ex ia IIC T4 Ga certification for use in Zone 0/1/2 gas atmospheres and IP68 fully submersible construction, it delivers reliable 4-20mA level measurement in environments where flammable gases or vapors may be present — such as diesel-powered pump houses, biogas-affected groundwater, and fertilizer storage areas.
ATEX Certified Intrinsic Safety
- ATEX Ex ia IIC T4 Ga: Certified for continuous use in Zone 0 (gas) — the highest level of explosion protection for permanently present explosive atmospheres
- Ex ia IIIC T135°C Da: Also certified for combustible dust environments (Zone 20/21/22), suitable for grain silos and fertilizer storage monitoring
- Intrinsic Safety Design: Low-power 4-20mA loop with mandatory safety barrier limits energy to below ignition thresholds for all gas groups including hydrogen (IIC)
- Marking & Traceability: Each sensor is laser-etched with ATEX certificate number, Ex marking, and unique serial number for full audit compliance
Designed for Agricultural Irrigation
- Deep Well Pumping Stations: Monitor water level in boreholes up to 200m depth to protect submersible pumps from dry-running damage
- Irrigation Canal & Reservoir: Continuous level monitoring for automated irrigation scheduling and water resource management
- Groundwater Monitoring Wells: Long-term stable measurement for aquifer level tracking, compliance reporting, and sustainable extraction management
- Tropical & Outdoor Rated: IP68 sealed 316L housing with UV-resistant PUR cable withstands sun exposure, rain, and flooding in field installations
Technical Specifications
| Model | WNK8010-ATEX |
| Level Range | 0-1m to 0-200mH2O |
| Output Signal | 4-20mA (2-wire, via ATEX safety barrier) |
| Explosion Proof | ATEX Ex ia IIC T4 Ga / Ex ia IIIC T135°C Da |
| Accuracy | 0.5%FS (0.25%FS optional) |
| Power Supply | 12-32V DC (from certified IS barrier) |
| Protection Class | IP68 |
| Housing Material | 316L stainless steel |
| Cable Material | PUR / PTFE vented cable with Kevlar core |
| Operating Temperature | -20~70°C |
| Response Time | ≤10ms |
| Overload Capacity | 200%FS |
| Long-term Stability | ±0.2%FS/year |
| Measured Media | Water, Groundwater, Irrigation water, Light chemicals |
| Certification | ATEX, CE, ROHS, ISO 9001:2015 |
Applications
- Agricultural Deep Wells: Pump protection and water level control for irrigation boreholes in remote farming areas
- Irrigation Pump Stations: Suction and discharge level monitoring in diesel or electric pump houses where flammable vapors may accumulate
- Groundwater Monitoring: Continuous aquifer level logging for environmental compliance and water rights management
- Reservoir & Canal Systems: Surface water level monitoring for irrigation district distribution networks
- Fertilizer Storage Areas: Liquid fertilizer tank level monitoring in Zone 22 dust explosive atmospheres
Installation Notes
- Must be used with a certified ATEX intrinsic safety barrier (Zener barrier or galvanic isolator) between sensor and control room equipment
- Maximum cable length limited by loop resistance per IS barrier specifications (typically up to 1000m with proper barrier selection)
- Vented cable must terminate in a non-hazardous area or via an approved venting device to prevent moisture ingress
- Cable suspension installation recommended; optional 1" NPT or flange mounting adapters available
Quality & Compliance
- ATEX-certified by notified body with full Type Examination Certificate
- ISO 9001:2015 manufacturing with full material traceability
- 100% temperature compensated and individually calibrated
- 48-hour submersed burn-in test on every unit
- 12-month warranty for non-man-made damages
FAQ
Q: What does ATEX Ex ia IIC T4 mean?
A: It means the sensor is certified intrinsically safe (ia) for use in Zone 0 (continuously explosive atmosphere), for gas group IIC (including hydrogen and acetylene — the most easily ignited gases), with a maximum surface temperature of 135°C (T4 class). This is the highest safety level for electrical equipment in explosive gas atmospheres.
Q: Do I need special wiring or barriers?
A: Yes. The sensor must be connected through a certified ATEX intrinsic safety barrier (Zener barrier or galvanic isolator). We can recommend compatible barrier models from Pepperl+Fuchs, MTL, or Stahl upon request.
Q: Can this sensor be used in biogas environments near livestock farms?
A: Yes. The ATEX IIC certification covers methane and hydrogen sulfide commonly found in biogas, making it suitable for monitoring applications on farms with anaerobic digesters or biogas recovery systems.
Q: What is the minimum order quantity?
A: We accept orders from 1 piece for evaluation. ATEX-certified sensors require 2-3 weeks lead time for certification document preparation.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.