0-5V 4-5V Durable Water Treatment Oil Pressure Sensor

WNK81MA is silicon oil filled pressure transducer, using imported ASCI signal conditioning chip and diffused silicon oil filled sensor core.It has features of anti-corrosion, anti-wear, shock resistance and vibration resistance. With long-term stability and high accuracy, it widely used in the pressure measurement and control fields of HVAC, Auto, Pumping, water treatment and etc.With certification of UL, RoHs, Reach, CE, UKCA, WNK81mA will quickly help you expand your market.

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Model:
WNK81ma
Brand:
WNK

Product Description

Applicable media	Liquid, Gas
Pressure Range	0-60bar/-1-700Bar
Pressure Type	Gauge Pressure, Absolute pressure, Sealing pressure
Output	4-20mA/0.5-4.5V/1 -5V/0-10V/I2C
Accuracy(linearity,Hysteresis and Repeatability)	0.5%F.S./1%FS (Typical)
Power Supply	24VDC/12VDC/5VDC/3.3V
Compensation temperature	-20~85ºC
Ambient temperature	-40~125ºC
Working temperature	-40~125ºC
Temperature drift(zero)	±0.15% F.S. (-20~85ºC)
Temperature drift(full range)	±0.15% F.S. (-20~85ºC)
power(electrical) connect	Parkard, M12, DIN43650, Cable outlet
Mechanical connection	G1/4, 1/4NPT, 1/8NPT, M12*1.5, customize
Housing material	304 stainless steel(inner core is 316 stainless steel)
Protection	IP65

Product Overview: Built for Water Treatment’s Harsh Environments

The WNK81MA is a silicon oil-filled pressure transducer engineered exclusively for water treatment applications, combining imported ASIC signal conditioning chips with diffused silicon oil-filled sensor cores. Unlike generic pressure sensors, it’s designed to tackle the unique challenges of water treatment—from chemical corrosion in wastewater to mechanical vibration in pumping systems—while delivering long-term stability and high accuracy (0.5% F.S. / 1% F.S. typical). With certifications including UL, RoHS, Reach, CE, and UKCA, it meets global industry standards, making it a trusted choice for water treatment facilities worldwide.

Scenario-Based Solutions: Solving Water Treatment Pain Points

Water treatment operations face consistent hurdles like equipment degradation, inaccurate pressure data, and unplanned downtime. The WNK81MA addresses these with targeted solutions:

Corrosion & Chemical Resistance for Wastewater Processing

Wastewater often contains harsh chemicals (e.g., chlorine, alum) that erode standard sensors. The WNK81MA’s 316 stainless steel inner core and 304 stainless steel housing resist corrosion, ensuring reliable performance in pre-treatment, filtration, and disinfection stages.

Vibration Resistance for Pumping Systems

Water treatment relies on high-power pumps that generate intense vibration—this can disrupt sensor readings or damage delicate components. The WNK81MA’s shock and vibration-resistant design maintains accuracy even in high-vibration environments, preventing false alarms and ensuring consistent water flow control.

Continuous Monitoring for Water Quality Compliance

Regulatory compliance requires 24/7 pressure monitoring (e.g., in reverse osmosis systems). The WNK81MA’s long-term stability eliminates frequent recalibration, while its 0.5-4.5V/4-20mA output seamlessly integrates with SCADA systems to track pressure in real time—critical for meeting EPA or local water quality standards.

Core Features: Durability Meets Precision

Wide Pressure Range: 0-60bar to -1-700bar, supporting gauge, absolute, and sealing pressure measurements for diverse water treatment stages.

Temperature Tolerance: Operates at -40~125°C (working temp) and -20~85°C (compensation temp), with minimal drift (±0.15% F.S.) to handle temperature fluctuations in outdoor or industrial facilities.

Flexible Installation: Mechanical connections (G1/4, 1/4NPT, 1/8NPT, M12*1.5) and electrical options (Packard, M12, DIN43650) adapt to existing water treatment setups.