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.
|Pressure Ranges||from 10 bar FS to 600 bar FS (abs.)|
|Output||3-wire - 0.5...4.5 VDC Non-ratiometric|
|Linearity (bfsl)||Standard: max. ±0,5 %FS
Premium: max. ±0,25 %FS