| Model: | WPAK67 |
| Detection principle: | Differential pressure measurement using stainless steel double-corrugated isolation diaphragms, silicone-oil pressure transmission and a silicon pressure-sensitive chip |
| Output signal: | Millivolt differential bridge output |
| Measurement range: | 0～10kPa, 0～20kPa, 0～35kPa, 0～70kPa, 0～100kPa, 0～200kPa, 0～400kPa, 0～600kPa, 0～1MPa, 0～1.6MPa, 0～2MPa, 0～3.5MPa |
| Response time: | ≤1ms |
| Pressure Range: | 0～10kPa…3.5MPa |
| Pressure Reference: | Gauge Pressure; differential pressure between high-pressure and low-pressure ends |
| Working Temperature: | -40℃～125℃ |
| Diaphragm material: | SS 316L |
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Description
The WPAK67 oil-filled pressure sensor core is a differential pressure sensing device using stainless steel double-corrugated diaphragms for isolation. Differential pressure is transmitted through the isolation diaphragms and filled silicone oil to the silicon pressure-sensitive element.
The core uses a stable, high-precision silicon pressure chip and a stress-optimized sintered base. Its shape, dimensions and sealing method are designed for interchangeability with mainstream differential pressure sensor cores. It is suitable for differential pressure and liquid-level measurement of compatible liquids and gases.
Application
- Differential pressure measurement
- Liquid-level measurement
- Process control systems
- Pressure calibration instruments
- Biomedical instruments
- Hydraulic systems
- Hydraulic valves
- Refrigeration equipment
- HVAC systems
- Ships
- Navigation systems
Features
- Differential pressure measurement
- Stainless steel double-corrugated isolation diaphragms
- Silicone-oil pressure transmission
- High-stability silicon pressure chip
- Stress-optimized sintered base
- Constant-current power supply
- Constant-voltage power supply
- All-stainless-steel structure
- 1.5 times full-range overpressure
- Fast response
- High interchangeability
- High vibration resistance
- Long operating life
- Optional nitrile-rubber seal
- Optional fluororubber seal
Specifications
| Measuring Range | 0～10kPa…3.5MPa |
| Pressure Reference | Gauge Pressure; differential pressure between high-pressure and low-pressure ends |
| Power Supply | ≤3.0mA; ≤10VDC |
| 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 | <1ms, 10%～90% |
| Insulation Resistance | 500MΩ/100VDC |
| Allowable Overvoltage | 1.5 times full range |
| Diaphragm Material | SS 316L |
| Housing Material | SS 316L |
| Lead Wire Material | Silicone-rubber flexible wire |
| Seal Ring | Nitrile rubber; fluororubber optional |
| Vibration | No change under 10g RMS, 20～2000Hz |
| Constant Acceleration | 100g, 11ms |
| Media Compatibility | Liquids or gases compatible with 316L stainless steel and nitrile rubber; fluororubber optional |
| Zero-point Output | Typical ±1mV; Max ±2mV |
| Non-linearity | Typical 0.2%FS; Max 0.5%FS |
| Hysteresis | Typical 0.05%FS; Max 0.08%FS |
| Repeatability | Typical 0.05%FS; Max 0.08%FS |
| Input/Output Impedance | Typical 2.6kΩ; Max 5.0kΩ |
| Zero-point Temperature Drift | Typical ±0.4%FS at 25℃; Max ±1.0%FS at 25℃ |
| Sensitivity Temperature Drift | Typical ±0.4%FS at 25℃; Max ±1.0%FS at 25℃ |
| Long-term Stability | Typical 0.2%FS/Year; Max 0.3%FS/Year |
| Excitation Current | 1.5mA; Max input voltage 10V |
| Compensation Temperature | 0～50℃ for ranges of 200kPa and below; -10℃～70℃ for ranges above 200kPa |
| Operating Temperature | -40℃～125℃ |
| Storage Temperature | -40℃～125℃ |
| Lifespan | ＞1×108 pressure cycles at 80%FS |
* 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.
