Ultramodern welding techniques and advances in the miniaturization of electronic circuits now make it possible to manufacture a pre-insulated, piezoresistive micro-transmitter with properties that were no more than a dream 10 years ago.
The circuit is based on the PromComp principle which KELLER offered in a separate version as a laboratory device 20 years ago when it attained accuracy of 0,1 %FS over a temperature range of 100 K. In those days the electronic circuitry was the size of a cigar box, but now it can be accommodated on a print that is a mere 12 mm in diameter.
Although this digital component is only slightly more expensive to produce than an analog circuit, it allows a piezoresistive sensor to be calibrated to an accuracy of 0,5 %FS over a potential temperature range of 100 K.
| Supply | 8…28 V
|
| Pressure Ranges | from 10 bar FS to 600 bar FS (abs.) |
| Output | 3-wire: 0,5...4,5 V (not ratiometric) |
| Linearity (best fitted straight line) | Standard: max. ±0,5 %FS Premium: max. ±0,25 %FS |
