| Prod Model: |
WA18 |
| Model No.: |
Wa18 |
| Pressure Range: |
0-40kpa…2.5MPa |
| Typical Output: |
0-100V |
| Media Range: |
Non-Corrosive Gas and Liquid |
| Pressure Reference: |
Gauge |
| Compensation Temperature: |
0~70ºC |
| Place Of Origin: |
Heifei, Anhui, China |
| Warranty: |
1year |
| Component: |
OEM Technology |
| Measuring Medium: |
Liquid and Gas |
Product Description
WA18 Diffused Silicon Oilless Pressure Sensor WA18 series is MEMS technology based piezoresistive silicon sensor. It uses ceramic housing without isolation diaphram and silicon oil. WA18 is different with tranditonal diffused silicon diaphram-free sensors: pressure media touches directly with the back of pressure chip (the side without circuit), ensuring durability and long-term stability of the sensor. It is a kind of low cost and high performance OEM pressure measuring sensor designed for clear and non-corrosive gas and liquid.
Every sensor was strictly temperature compensated for both zero and span before shipment to ensure measurement accuracy in complex environment.
Features - WA18 Diffused Silicon Oilless Pressure Sensor 1. For measuring non-corrosive gas and liquid
2. Simple structure in low cost
3. Suitable for small and medium pressure (0-40Kpa2.5Mpa)
4. Compensation temperature 0-70ºC
5. Typical output: 0-100mV
6. Ventilating Gauge pressure (G)
Technical Parameters under Constant Voltage (excitation voltage 10VDC, preheat 10mins under 25ºC)| Parameters | Min. | Typical | Max. |
| Accuracy(%FS) | | | |
Non-
Linearity1 | 40Kpa | | ±0.20 | ±0.30 |
| >40Kpa | | ±0.10 | ±0.20 |
| Hysteresis | | ±0.05 | ±0.1 |
| Repeatability | | ±0.05 | ±0.1 |
| Output(mV) | | | |
| Zero | -5 | 0 | 5 |
| Span(FS) | 95 | 100 | 105 |
| Temp. characters | | | |
| Operation Temp.(ºC)3 | -40 | | 125 |
| Compensation Temp(ºC) | 0 | | 70 |
| Zero Temp.error(%FS)4 | -0.75 | ±0.5 | 0.75 |
| Span Temp. error(%FS)4 | -0.75 | ±0.5 | 0.75 |
| Thermal hysteresis(%FS) | | 0.1 | |
| Long term Stability | | | |
| Zero (±%FS annual) | | 0.1 | |
| Span (±%FS annual) | | 0.1 | |
| Supply Voltage | | 10VDC | 14VDC |
| Input Resistance | 6kΩ | 8kΩ | 10kΩ |
| Output Resistance | 2.5kΩ | 3kΩ | 3.7kΩ |
| Load Resistance5 | 5MΩ | | |
| Insulation Resistance(50V)6 | 50MΩ | | |
| |
| Pressure Range | 0-40Kpa2.5Mpa |
| Pressure Overload | 2X Rated pressure or 3.5Mpa (take the smaller) |
| Pressure Breakdown | 1.5X Rated pressure or 4Mpa (take the smaller) |
| Pressure Media | Clear gas and clear non-corrosive liquid compatible with ceramic, silicon, glass, Silica( measuring range smaller than1Mpa)/ epoxy resin adhesive (measuring range higher than 1Mpa) |
Note:1. Best fit straight line.
2. Measured at vacuum for absolute (A), ambient for gage (G).
3. Maximum temperature range for product with standard cable is -20°C to +105°C.
4. Over the compensated temperature range with respect to 25°C.
5. Load resistance to reduce measurement errors due to output loading.
6. Between case and sensing element.
Dimensions - WA18 Diffused Silicon Oilless Pressure Sensor 
Why choose us?1. We are professional manufacturer with own R&D and sales team, with more than 12 years producing experience in transmitters & sensors.
2. We have strict quality control system, each set product we do temperature compensation and aging test before shipment, so the quality is guaranteed.
Delivery
7~15 days after order confirmedContact
Founded in 2004, ANHUI WNK ELECTRONIC ENGINEERING 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 customers comprehensive fieldbus technical solutions and factory informatization construction.
Our main products include iEOS industrial cloud data base developing plate form; Industrial Internet of Things; WNK-WMS industrial wireless measurement system; Onsite measurement instruments like temperature, pressure, flow, level sensor and transmitter etc, widely applied in Petrochemical, Chemical, Power, Steel and Cement.
WNK is the third company in China developed PROFIBUS transmitters. WNK series PROFIBUS transmitter is the fourth in China certificated by international PROFIBUS organization, and Chinese first that completely having proprietary intellectual property rights. WNK PROFIBUS-PA temperature transmitters filled Chinese blank technology in the field.
With strict, scientific management system, WNK has been certificated to conform to standard GB/T 19001-2008 / ISO 9001: 2008 by China CLASSIFICATION SOCIETY CERTIFICATION COMPANY. WNK commits to developing of new products and technical innovation. With continuously effort in advanced technology of automation control system, WNK has been undertaking some innovation projects of MST (Ministry of Science and Technology), and has been honored as promising enterprise of "Giant of Technology "in Hefei Hi-tech Industry Development Zone.
As Chinese first and unique qualified production enterprise of 0.075% measurement in Anhui, WNK brand was awarded Anhui Famous Brand.
