English ![]()
T: +86-18156545248
E: info@wnksensor.com
E: info@wnksensor.com
5F, Bldg. 2A, Mingzhu Industrial Park Hefei 230000, China
 |
The WNK125P is a diffusible silicon oil-filled pressure sensor designed forautomotive use. The element is made with a fully welded 316L diaphragm anddoes not require any O-ring seals that could come into contact with the pressuremedium, making it compatible with all types of liquids. The absence of anymoving parts results in a longer service life. With high temperature stability andaccuracy,this pressure sensor is mainly used in automotive, transmission, airconditioning and oil pressure measurement applications.
| Quantity: | |
|---|---|
WNK125P
WNK
Model | WNK125P |
Power Supply | 4.75~5.25VDC(( With reverse polarity protecticion overvoltage protection 32V DC |
Supply current | 15mA MAX |
Pressure range | 0~5Bar0~10Bar0~20Bar0~40Bar(Cutomized) |
Output | 0.5V~4.5V DC,(10%-90%VCC) |
Process Connection | G1/4，7/16-UNFfemale,(cusomized) |
Electrical connector | Pack |
Working Temperature | -40℃C~130℃℃ |
Storage Temperature | -50℃~135C |
Safe Pressure | 1.5~2 time of the pressure range |
Burst Pressyre | 100Bar G |
Accuracy | +1%F.S( Linearity,Hysteresis, Repeatability, Calibration) |
Total Error Band | Static error band @25℃，5VDC,+3%(-30℃~125°℃) |
Meadium | Engine oil, POE oil, refrigerant, gas, water or liquid |
Mounting Torque | 10~20N·m |
Anti-freeze function | The sensor has no anti-freezing function when the sensor's working medium is water. |
Material | Housing 304 SST; wetted parts 316L |
The WNK125P is a high-performance, diffusible silicon oil-filled pressure sensor specifically engineered for automotive applications. Designed by Hefei Wnk Smart Technology Co., Ltd.—a professional manufacturer with over 20 years of experience in pressure, level, and temperature measurement—it combines rugged construction with precise performance to meet the demanding requirements of automotive systems.
At its core, the sensor features a fully welded 316L stainless steel diaphragm, eliminating the need for O-ring seals that could interact with the measured medium. This design ensures compatibility with a wide range of liquids and gases, including engine oil, POE oil, refrigerants, water, and other fluids. With no moving parts, the WNK125P delivers an extended service life, making it a reliable choice for long-term automotive use.
Key specifications include a pressure range of 0-40Bar (customizable to 0-5Bar, 0-10Bar, or 0-20Bar), a 4.75~5.25VDC power supply with reverse polarity and overvoltage protection (up to 32V DC), and an output signal of 0.5V~4.5V DC (10%-90% VCC). Its compact size and robust housing (304 stainless steel) save installation space while withstanding harsh operating conditions.
The WNK125P boasts ±1% F.S accuracy (combining linearity, hysteresis, and repeatability), ensuring precise measurements for critical automotive applications. Factory calibration eliminates the need for field adjustments, providing plug-and-play reliability. Even across extreme temperatures (-40℃ to 130℃), the total error band remains within ±3% (static error at 25℃, 5VDC), guaranteeing consistent performance in diverse environments.
Multiple process connection options—including G1/4, 7/16-UNF female, and custom variants—simplify integration into various automotive systems. The sensor’s electrical connector (Pack type) and mounting torque range (10~20N·m) further enhance installation flexibility. OEM/ODM services are available to accommodate unique design requirements, making it adaptable to specific project needs.
Constructed with 304 stainless steel housing and 316L wetted parts, the WNK125P resists corrosion and wear, even in contact with aggressive media. It handles a safe pressure of 1.5~2 times the rated range and a burst pressure of 100Bar G, ensuring operational safety in high-pressure scenarios. The sensor operates with a maximum supply current of 15mA, optimizing energy efficiency.
The WNK125P is ideally suited for automotive systems requiring precise pressure monitoring, including:
· Transmission systems: Measuring fluid pressure to ensure smooth gear shifts and prevent component damage.
· Air conditioning systems: Monitoring refrigerant pressure to maintain optimal cooling performance.
· Engine oil systems: Tracking oil pressure to protect engine components from friction and overheating.
· Other automotive fluids: Compatible with various liquids and gases, making it suitable for brake fluid, coolant, and fuel pressure measurement.
Beyond automotive use, its versatility allows for potential applications in industrial machinery and HVAC systems where reliable pressure sensing is critical.
We are a professional manufacturer of pressure, level, and temperature measurement devices with over 20 years of experience (established in 2004).
The WNK125P is produced under an ISO 9001-2015 certified quality management system. Each unit undergoes calibration, temperature compensation, and aging tests before shipment to ensure reliability.
We offer a 12-month warranty from the shipment date, covering non-man-made damages.
Yes, we support OEM/ODM services, including custom logos, pressure ranges, and connection types, to meet your
unique requirements.
Model | WNK125P |
Power Supply | 4.75~5.25VDC(( With reverse polarity protecticion overvoltage protection 32V DC |
Supply current | 15mA MAX |
Pressure range | 0~5Bar0~10Bar0~20Bar0~40Bar(Cutomized) |
Output | 0.5V~4.5V DC,(10%-90%VCC) |
Process Connection | G1/4，7/16-UNFfemale,(cusomized) |
Electrical connector | Pack |
Working Temperature | -40℃C~130℃℃ |
Storage Temperature | -50℃~135C |
Safe Pressure | 1.5~2 time of the pressure range |
Burst Pressyre | 100Bar G |
Accuracy | +1%F.S( Linearity,Hysteresis, Repeatability, Calibration) |
Total Error Band | Static error band @25℃，5VDC,+3%(-30℃~125°℃) |
Meadium | Engine oil, POE oil, refrigerant, gas, water or liquid |
Mounting Torque | 10~20N·m |
Anti-freeze function | The sensor has no anti-freezing function when the sensor's working medium is water. |
Material | Housing 304 SST; wetted parts 316L |
The WNK125P is a high-performance, diffusible silicon oil-filled pressure sensor specifically engineered for automotive applications. Designed by Hefei Wnk Smart Technology Co., Ltd.—a professional manufacturer with over 20 years of experience in pressure, level, and temperature measurement—it combines rugged construction with precise performance to meet the demanding requirements of automotive systems.
At its core, the sensor features a fully welded 316L stainless steel diaphragm, eliminating the need for O-ring seals that could interact with the measured medium. This design ensures compatibility with a wide range of liquids and gases, including engine oil, POE oil, refrigerants, water, and other fluids. With no moving parts, the WNK125P delivers an extended service life, making it a reliable choice for long-term automotive use.
Key specifications include a pressure range of 0-40Bar (customizable to 0-5Bar, 0-10Bar, or 0-20Bar), a 4.75~5.25VDC power supply with reverse polarity and overvoltage protection (up to 32V DC), and an output signal of 0.5V~4.5V DC (10%-90% VCC). Its compact size and robust housing (304 stainless steel) save installation space while withstanding harsh operating conditions.
The WNK125P boasts ±1% F.S accuracy (combining linearity, hysteresis, and repeatability), ensuring precise measurements for critical automotive applications. Factory calibration eliminates the need for field adjustments, providing plug-and-play reliability. Even across extreme temperatures (-40℃ to 130℃), the total error band remains within ±3% (static error at 25℃, 5VDC), guaranteeing consistent performance in diverse environments.
Multiple process connection options—including G1/4, 7/16-UNF female, and custom variants—simplify integration into various automotive systems. The sensor’s electrical connector (Pack type) and mounting torque range (10~20N·m) further enhance installation flexibility. OEM/ODM services are available to accommodate unique design requirements, making it adaptable to specific project needs.
Constructed with 304 stainless steel housing and 316L wetted parts, the WNK125P resists corrosion and wear, even in contact with aggressive media. It handles a safe pressure of 1.5~2 times the rated range and a burst pressure of 100Bar G, ensuring operational safety in high-pressure scenarios. The sensor operates with a maximum supply current of 15mA, optimizing energy efficiency.
The WNK125P is ideally suited for automotive systems requiring precise pressure monitoring, including:
· Transmission systems: Measuring fluid pressure to ensure smooth gear shifts and prevent component damage.
· Air conditioning systems: Monitoring refrigerant pressure to maintain optimal cooling performance.
· Engine oil systems: Tracking oil pressure to protect engine components from friction and overheating.
· Other automotive fluids: Compatible with various liquids and gases, making it suitable for brake fluid, coolant, and fuel pressure measurement.
Beyond automotive use, its versatility allows for potential applications in industrial machinery and HVAC systems where reliable pressure sensing is critical.
We are a professional manufacturer of pressure, level, and temperature measurement devices with over 20 years of experience (established in 2004).
The WNK125P is produced under an ISO 9001-2015 certified quality management system. Each unit undergoes calibration, temperature compensation, and aging tests before shipment to ensure reliability.
We offer a 12-month warranty from the shipment date, covering non-man-made damages.
Yes, we support OEM/ODM services, including custom logos, pressure ranges, and connection types, to meet your
unique requirements.
