Description
WPAK67 oil-filled core pressure sensor is a differential pressure sensing device using a stainless steel double-corrugated diaphragm for isolation. The measured differential pressure is transmitted to the silicon pressure-sensitive element through the isolation diaphragm and the filled silicone oil, achieving accurate differential pressure measurement. The core utilizes an internationally advanced, highly stable, and high-precision silicon pressure chip with a stress-optimized sintered base. The general-purpose product's shape, dimensions, and sealing method are consistent with mainstream international products, ensuring excellent interchangeability. It is widely used for differential pressure and level measurement of media compatible with 316L stainless steel, nitrile rubber, or fluororubber.
Application
- Process control system
- Pressure calibration instrument
- Biomedical instruments
- Hydraulic system and valve
- Liquid level measurement
- Refrigeration equipment and HAVC system
- Ships and navigation
Features
- Measuring Range 0kPa~ 10kPa …3.5MPa
- Constant current/ Constant voltage power supply
- Diaphragm isolation type
- All stainless steel structure
- 1.5X full range overload pressure
Specifications
| Item | Parameters |
|---|---|
| Electrical performance | |
| Power Supply | ≤3.0mA; DC≤10V DC |
| Electrical Connection | 0.2mm² 4-Color 100mm Silicone rubber flexible wire |
| Common-mode Voltage Output | 50% (typical) for current-type inputs, 40% (typical) for voltage-type inputs |
| Input Impedance | 2.7kΩ ~ 5kΩ |
| Output Impedance | 3.0kΩ ~ 6kΩ |
| Response Time(10%~90%) | ＜1ms |
| Insulation Resistance | 500MΩ / 100V DC |
| Allowable Overvoltage | 1.5X Full Range |
| Structural Performance | |
| Diaphragm Material | SS 316L |
| Housing Material | SS 316L |
| Pin Leads | Silicone rubber flexible wire |
| Seal Ring | Nitrile rubber, fluororubber (optional) |
| Environment Condition | |
| Vibration | No change was observed under 10g RMS conditions (20~2000) Hz |
| Constant Acceleration | 100g，11ms |
| Media Compatibility | Liquids or gases made of 316L and nitrile rubber (with optional fluororubber) |
| Baseline Conditions | |
| Medium Temperature | (25±3)℃ |
| Ambient Temperature | (25±3)℃ |
| Humidity | (50%±10%) RH |
| Environmental Pressure | (86~106) kPa |
| Power Supply | (1.5±0.0015) mA DC |
| Range | Full Range Output（mV） | Typical |
|---|---|---|
| 0～10 kPa | 35～60 | 45 |
| 0～20 kPa | 70～110 | 90 |
| 0～35 kPa | 55～80 | 70 |
| 0～70 kPa | 55～80 | 60 |
| 0～100 kPa | 60～85 | 75 |
| 0～200 kPa | 65～85 | 75 |
| 0～400 kPa | 60～80 | 70 |
| 0～600 kPa | 90～120 | 100 |
| 0～1.0 MPa | 80～120 | 100 |
| 0～1.6 MPa | 125～185 | 150 |
| 0～2.0 MPa | 50～70 | 60 |
| 0～3.5 MPa | 100～120 | 110 |
| Parameter | Typical | Max | Unit |
|---|---|---|---|
| Zero-point output | ±1 | ±2 | mV |
| Nonlinear | 0.2 | 0.5 | %FS |
| Hysteresis | 0.05 | 0.08 | %FS |
| Repeatability | 0.05 | 0.08 | %FS |
| Input/output impedance | 2.6 | 5.0 | KΩ |
| Zero-point temperature drift | ±0.4 | ±1.0 | %FS,@25°C |
| Sensitivity Temperature Drift | ±0.4 | ±1.0 | %FS,@25°C |
| Long-term stability | 0.2 | 0.3 | %FS/Year |
| Excitation current | 1.5 (Max Input Voltage 10V) | mA | |
| Insulation resistance | 500 (100VDC) | MΩ | |
| Compensation temperature | 0~50°C；-10°C~70°C | °C | |
| Operating temperature | -40~+125 | °C | |
| Storage temperature | -40~+125 | °C | |
| Response time | ≤1 | ms | |
| Lifespan | ＞1×10⁸ Pressure Cycle (80%FS) | Times | |
Note:
1. Typical zero-point temperature drift and sensitivity temperature drift for 0~10kPa is 0.5%FS@25°C, with a maximum value of 1.2%FS@25°C.
2. For ranges of 200kPa and below, the compensation temperature is 0~50℃; for ranges above 200kPa, the compensation temperature is -10°C～70°C.
3. The temperature resistance range of fluororubber seals is -20°C～200°C. Low-temperature performance is poor; please use caution when selecting seals for temperatures below -20°C.
* The description and specifications might be changed without notice. Please contact us for the latest information before placing orders.
Technical Support:
Customized technical design and function, LOGO and package are available without extra charge (including molding fee) for mass volume.
The sensors don't have sleeping mode. It can be set in program if needed.
All Winsen products go through strict inspections and tests to make sure they are 100% qualified before shipping out.
The sensor has been fully tested (not calibrated) before leaving the factory, but the module will be calibrated before leaving the factory.
However, after transportation and storage, the environment conditions change, and the surface of the sensor absorbs moisture, mixed gas, pollution matters, etc. It is recommended that customers perform aging and calibration after sensors become stable according to the program and use occasions of the whole device.
15﹪-90﹪RH without condensation,greater or less than this range or long-term high temperature and high humidity will affect the life of the sensor.
Our sensors are certified with CE, 3C, ROHS, anti-explosion, fire prevention, and coal mining safety according to different applications. And we provide assistance for new certification.
Many factors can cause the sensor to fail such as broken wires in transportation, poisoning, falling off of the sensitive material, damage to the heating wire (device), etc. Please find specific cause in each category with Winsen’s aftersales.
Winsen provides professional consultation and service before and after sales. We will recommend the best fitting sensor for your demand. If you have any problem, don’t hesitate to email us to sales@winsensor.com
Due to high volume of daily incoming emails and time zone difference, we may not be able to reply your emails immediately. But we will reply to your inquiry in 24 business hours.
