Piezoresistive Transmitters Series 25 S for Industrial Applications
For low pressure measurements, high stability has previously only been achieved with large piezoresistive or ceramic capsules and stress-free, floating mountings with O-rings or seals.
However, in modern industrial applications, the increasing demand for reliability and extended lifetimes means that O-rings and seals are less and less acceptable, as they are potential causes of failure.
KELLER have now introduced a totally new production method, using a stainless steel brazing technique to give high stability and high accuracy without internal O-rings. This is the new 25 S production line (also see 23 S-line).
Class 0,25%.
Pressure Ranges
0,2...200 bar (abs./rel.)
Output
4...20 mA 0...10 V 0,5...4,5 V
Linearity
typ. ± 0,2 % FS
max. ± 0,5 % FS
Stability, Range > 2 bar Stability, Range < 2 bar
typ. 0,1 % FS typ. 1 mbar
max. 0,2 % FS max. 2 mbar
Operating Temperature
-40...100°C
Comp. Temp. Range
-10...80°C
T.C. of Zero (Range 1 bar)
typ. < 0,01 %FS / °C
max. < 0,02 %FS / °C
T.C. of Sensitivity (Range 1 bar)
max. 0,02 % / °C
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