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WA16 Diezoresistive Silicon Oil Filled Weldable Pressure Sensor
Introduction
WA16 series are MEMS technology based piezoresistive silicon sensor. It is a kind of high stable and high accuracy OEM preesure measurement sensor. This series are sealed with pressure diaphram of international well-known manufacturers. The external pressure is passed to sensitive elements through 316L stainless steel diaphram and internal silicon oil. Thus it can be used to measure all pressure media compatible with 316L stainless steel.
Every sensor was strictly temperature compensated for both zero and span before shipment to ensure measurement accuracy in complex environment.
This series sensor offers two excitation power -- constant current and constant voltage (for details please check technical parameters and type code ). It also matches varied-size threads so is able to meet requirements of different customers.
Applications：
u Automation control
u Pressure instruments
u Level measurement
u Pressure transmitters
Features:
u Low cost OEM
u High stability and accuracy
u Suited for pressure of 0-40Kpa…7Mpa
u Wide compenstation temperature range
u Compatible with 316L, suitable for corrosive media
u Standard mounting size
u Typical output: 0-100mV
Technical Parameters under Constant Current (excitation current 1.5mA, preheat 10mins under 25℃)
Parameters | Min. | Typical | Max. | ||
Accuracy(%FS) | |||||
Non- | 40Kpa | ±0.20 | ±0.30 | ||
>40Kpa | ±0.10 | ±0.20 | |||
Hysteresis2 | ±0.05 | ±0.1 | |||
Repeatibility3 | ±0.05 | ±0.1 | |||
Output(mV) | |||||
Zero | -2 | ±1 | 2 | ||
Span(FS) | 70 | ||||
Temp. characters | |||||
Operation Temp.(℃) | -40 | 125 | |||
Compensation Temp(℃) | ≤100Kpa | 0 | 70 | ||
>100Kpa | -10 | 70 | |||
Zero Temp.error(%FS)4 | 40Kpa | ±0.75 | ±1.5 | ||
>40Kpa | ±0.75 | ±1.0 | |||
Span Temp. error(%FS)4 | 40Kpa | ±0.75 | ±1.5 | ||
>40Kpa | ±0.75 | ±1.0 | |||
Thermal hysteresis(%FS)5 | 0.1 | ||||
Long term Stability | |||||
Zero (±%FS annual) | 0.1 | ||||
Span (±%FS annual) | 0.1 | ||||
Supply Current | 0.5mA | 1.5mA | 2mA | ||
Input Resistance | 2kΩ | 2.5kΩ | 3kΩ | ||
Output Resistance | 2.5kΩ | 3kΩ | 3.7kΩ | ||
Load Resistance6 | 5MΩ | ||||
Insulation Resistance(50V)7 | 50MΩ | ||||
Technical Parameters under Constant Voltage (excitation voltage 10VDC, preheat 10mins under 25℃)
Parameters | Min. | Typical | Max. | |||
Accuracy(%FS) | ||||||
Non- | 40Kpa | ±0.20 | ±0.30 | |||
>40Kpa | ±0.10 | ±0.20 | ||||
Hysteresis | ±0.05 | ±0.1 | ||||
Repeatability | ±0.05 | ±0.1 | ||||
Output(mV) | ||||||
Zero | -2 | ±1 | 2 | |||
Span(FS) | 99 | 100 | 101 | |||
Temp. characters | ||||||
Operation Temp.(℃)3 | -40 | 125 | ||||
Compensation Temp(℃) | 40Kpa | 0 | 50 | |||
100Kpa | 0 | 70 | ||||
>100Kpa | -10 | 70 | ||||
Zero Temp.error(%FS)4 | 40Kpa | ±0.75 | ±1.5 | |||
>40Kpa | ±0.75 | ±1.0 | ||||
Span Temp. error(%FS)4 | 40Kpa | ±0.75 | ±1.5 | |||
>40Kpa | ±0.75 | ±1.0 | ||||
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 | 0-40Kpa…7Mpa | |||||
Pressure | ≤4Mpa | 2X | ||||
7Mpa | 1.5X | |||||
Pressure Media | Liquids, Gases and Vapour compatible with 316L Stainless Steel | |||||
※Notes:
1. Least square method fits straight line.
2. Pressures to senor circulate from min. to max. span (positive stroke) and max. span to min. (negative stroke) under working pressure range, testing output discrepancy between positive and negative strokes within working pressure range.
3. Same as the second testing method, sensors are circularly tested under positive and negative stroke pressure for three times;
4. Comparing the outputs within compensation temperature range with that in 25°C
5. Checking discrepancy in temperature circulation of -40 to +125℃ under zero output
6. Increase load resistance to reduce measurement errors;
7. Between case and sensing element.
- Company Name:Hefei WNK Smart Technology Co., Ltd
- Add:4/F,Bldg #6, No.168, Xiangzhang Road, High-tech District, 230088, Hefei, Anhui province, China
- Contacts:Ms. Lily Huang
- Mob:+86-18156548648
- Tel:
+86-551-6536 9667
- Email:[email protected]
Add:4/F,Bldg #6, No.168, Xiangzhang Road, High-tech District, 230088, Hefei, Anhui province, China
Contacts:Ms. Lily Huang
Mob:+86-18156548648
Tel:
Email:[email protected]