Hefei WNK Smart Technology Co.,Ltd
| Power Supply | 5VDC (for 0.5-4.5V), 12-36VDC (for 4-20mA) |
| Delivery Time | 3-7 working days for stock orders, 15-25 days for bulk production |
| Operating Temperature | -40°C to 125°C |
| Accuracy | 0.5%FS |
| Payment Terms | T/T,L/C,PayPal,Western Union |
| Media Compatibility | Oil, Air, Gas |
| Sensor Type | Piezoresistive Pressure Sensor |
| Supply Ability | 20000 Pieces per Month |
| Overload Capacity | 150%FS |
| Pressure Range | -1 to 700 Bar |
| Electrical Connection | Packard connector, DIN connector, or cable |
| Protection Class | IP65 |
| Wetted Material | Stainless Steel 316L |
| Output Signal | 0.5-4.5V (ratiometric), 4-20mA (2-wire) |
| Packaging Details | Standard export-grade corrugated carton with shock-proof protective foam insert, customized packaging available |
| Response Time | ≤ 5ms |
| Model Number | WNK81ma |
| Certification | CE, ROHS |
| Place of Origin | Anhui, China |
| Brand Name | WNK |
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Product Specification
| Power Supply | 5VDC (for 0.5-4.5V), 12-36VDC (for 4-20mA) | Delivery Time | 3-7 working days for stock orders, 15-25 days for bulk production |
| Operating Temperature | -40°C to 125°C | Accuracy | 0.5%FS |
| Payment Terms | T/T,L/C,PayPal,Western Union | Media Compatibility | Oil, Air, Gas |
| Sensor Type | Piezoresistive Pressure Sensor | Supply Ability | 20000 Pieces per Month |
| Overload Capacity | 150%FS | Pressure Range | -1 to 700 Bar |
| Electrical Connection | Packard connector, DIN connector, or cable | Protection Class | IP65 |
| Wetted Material | Stainless Steel 316L | Output Signal | 0.5-4.5V (ratiometric), 4-20mA (2-wire) |
| Packaging Details | Standard export-grade corrugated carton with shock-proof protective foam insert, customized packaging available | Response Time | ≤ 5ms |
| Model Number | WNK81ma | Certification | CE, ROHS |
| Place of Origin | Anhui, China | Brand Name | WNK |
| High Light | HVAC pressure sensor transmitter ，refrigeration pressure sensor 0.5-4.5V ，HVAC sensor with voltage output | ||
The WNK81ma Electronic Water Pressure Sensor is a high-performance piezoresistive pressure transducer engineered for precision measurement across oil, air, and gas media. Featuring dual output options (0.5-4.5V ratiometric voltage and 4-20mA current loop) and an exceptionally wide pressure range from -1 to 700 Bar, this sensor delivers outstanding versatility for industrial automation, hydraulic systems, pneumatic control, and process monitoring applications. CE and ROHS certified, the WNK81ma meets international quality and environmental compliance standards.
| Parameter | Specification |
|---|---|
| Sensor Type | Piezoresistive Pressure Sensor |
| Output Signal | 0.5-4.5V (ratiometric) / 4-20mA (2-wire) |
| Pressure Range | -1 to 700 Bar (gauge / sealed gauge) |
| Accuracy | 0.5%FS (including linearity, hysteresis, repeatability) |
| Media Compatibility | Oil, Air, Gas (non-corrosive to 316L SS) |
| Protection Class | IP65 (dust-tight, water jet protected) |
| Power Supply | 5VDC ±0.25V (0.5-4.5V output) / 12-36VDC (4-20mA output) |
| Operating Temperature | -40°C to 125°C |
| Compensated Temperature | -20°C to 85°C |
| Overload Capacity | 150%FS |
| Burst Pressure | 300%FS |
| Response Time | ≤ 5ms |
| Wetted Material | Stainless Steel 316L |
| Electrical Connection | Packard connector, DIN 43650, or integral cable |
| Certifications | CE, ROHS |
The WNK81ma is trusted across multiple industrial sectors for reliable pressure monitoring and control:
Unlike single-output sensors, the WNK81ma offers two simultaneous output options that provide maximum system design flexibility. The 0.5-4.5V ratiometric output is ideal for battery-powered and microcontroller-based applications where low voltage operation is critical. The 4-20mA current loop output provides superior noise immunity for long cable runs in factory environments and is the industry standard for PLC analog input modules. This dual-output capability eliminates the need to stock separate sensor models for different control architectures.
Manufactured by WNK, the WNK81ma combines precision piezoresistive sensing technology with robust industrial packaging. Every sensor undergoes rigorous factory calibration, including full-scale pressure cycling and temperature compensation verification, before shipment. The -1 to 700 Bar range covers vacuum, low-pressure, medium-pressure, and high-pressure applications in a single part number, reducing inventory complexity for OEMs and system integrators.
Our engineering team provides comprehensive technical support including wiring diagrams, application notes, and on-site commissioning guidance. Custom pressure ranges, electrical connections, and output configurations are available for volume orders. OEM and ODM services offered.
Contact us today to discuss your oil, air, or gas pressure measurement requirements and receive a tailored quotation.
Company Details
Business Type:
Manufacturer,Importer,Exporter
Year Established:
2004
Total Annual:
4000000-800000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Founded in 2004, HEFEI WNK SMART TECHNOLOGY CO., LTD is a hi-tech company specializing in different kinds of technologically-advanced and good quality sensor, transmitter and automation instrument. We devote to developing, manufacturing and selling of automation control system, providing our custome... Founded in 2004, HEFEI WNK SMART TECHNOLOGY CO., LTD is a hi-tech company specializing in different kinds of technologically-advanced and good quality sensor, transmitter and automation instrument. We devote to developing, manufacturing and selling of automation control system, providing our custome...
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