The Piezoresistive OEM Pressure Transmitters are capable of combining a piezoresistive pressure sensor with -40…150 °C-capable signal conditioning in a single package.
Chip-In-Oil (CIO) technology is used for completely embedding the pressure transmitter into a hermetically-sealed, oil-filled housing, and can also be seamlessly integrated into the OEM product, thus saving cost and ensuring better performance.
It comprises a ratiometric analog output which helps in simplifying the task of integrators by supplying a signal output, thus avoiding the need of incorporating an expensive, absolute reference. A 5 VDC supply provides 0.5…4.5 VDC output. This helps in protecting the LC-transmitter against overvoltage and reverse polarity up to ±33 VDC.
Key Features
The key features of the Piezoresistive OEM Pressure Transmitters are:
- External electronics are not required for compensation or signal processing.
- It has an operating temperature of about 150°C.
- Ultra-compact, robust housing is manufactured from stainless steel.
- It can be easily integrated into overall systems.
- Hermetically protected sensor electronics.
- Two-chip solution with pressure sensor and signal processing separation provides a high degree of flexibility.
Specifications
The specifications of the Piezoresistive OEM Pressure Transmitters are:
| Type |
3-wire |
| Accuracy |
max. +/- 0.25 %FS |
| Stability |
max. +/- 0.3 %FS |
| Overpressure |
2.5 x pressure range, max. 300 bar resp. 1200 bar (6 LC HP, 7 LC HP) |
| Load resistance |
> 5 kO |
| Isolation |
> 100 MO at 500 VDC |
| Power consumption |
max. 8 mA |
| Sampling rate/Bandwidth |
2 kHz/800 Hz |
| Rise time T99 |
1 ms |
| Oil filling |
Silicone oil |
| Reverse polarity and overvoltage protection |
± 33 VDC (permanently on all leads) |
| Supply |
5.0 VDC ± 0.5 V |
| Response time (Supply ON) |
<5 ms (0…99%) |