1-40 to-8 C wide temperature range models 26, 27 ultrastable? pc board mountable pressure sensor 0-100 mv output gage pressure wide temperature range t medical instrumentation t calibration t process control t factory automation t air flow management t leak detection features t to-8 package t -20c to +85c compensated temperature range t 0.1% non-linearity t 0.5% temperature performance t 1.0% interchangeable span (provided by gain set resistor) t solid state reliability t low power standard ranges range psig 0 to 15 c 0 to 30 c 0 to 50 c 0 to 100 c 0 to 250 c description the models 26 and 27 are high performance, temperature compensated, piezoresistive silicon pressure sensors packaged in a bottom tube to-8 configuration. they provide excellent performance and long-term stability. gage pressure ranges from 0-15 psi to 0-250 psi are available. integral temperature compensation is provided over a range of -20c to +85c using laser-trimmed resistors. an additional laser-trimmed resistor is included in the model 27 to normalize pressure sensitivity variations by programming the gain of an external differential amplifier. this provides sensitivity interchangeability of 1%. please refer to the low pressure section for information on products with operating pressures less than 0-2 psi. for an uncompensated sensor (model 25) please contact the factory for additional information. dimensions
pc board mountable pressure sensor models 26, 27 ultrastable? to-8 C wide temperature range 1-41 april 2000 performance specifications supply current: 1.5ma ambient temperature: 25c (unless otherwise specified) notes 1. output span of unamplified sensor. 2. best fit straight line. 3. for models 26, 27, compensation resistors are an integral part of the sensor package; no additional external resistors are required. pins 11 and 12 must be kept open. model 27 is interchangeable only when used with a gain stage. 4. temperature range: -20c to +85c in reference to 25c. 5. guarantees input/output ratiometricity. 6. for a zero-to-full scale pressure step change. 7. 10 hz to 1 khz. 8. prevents increase of tc-span due to output loading. 9. 3x or 500 psi maximum, whichever is less. 20 psi for 2 psi and 5 psi versions. 10. wetted materials are glass, ceramic, silicon, rtv, nickel. 11. normalized offset bridge voltage: 7 days. 12. 1 year. 13. between case and sensing element. connections ordering information application schematic parameters min typ max units notes full scale output span, (without gain set resistor) 75 100 150 mv 1 zero pressure output 2mv3 pressure non-linearity 0.05 0.1 % span 2 pressure hysteresis 0.01 0.1 % span input resistance 2500 3500 4500 w temperature error C span 0.3 0.5 % span 3, 4 temperature error C zero 0.1 0.5 % span 3, 4 temperature coefficient - resistance 0.145 %/c 4 thermal hysteresis C zero 0.05 % span 4 short term stability of offset 0.05 % span 11 short term stability of span 0.05 % span 11 long term stability of offset 0.1 % span 12 long term stability of span 0.1 % span 12 supply current 0.5 1.5 2.0 ma 5 response time (10% to 90%) 1.0 msec 6 output noise 1.0 v p-p 7 output load resistance 5 m w 8 insulation resistance (50 vdc) 50 m w 13 pressure overload 3x rated 9 operating temperature C40 c to +125 c storage temperature C50 c to +150 c media non-corrosive gases compatible with wetted materials 10 weight 3 grams model 26 model 27 27 015 g - type (g = gage) model (27 or 26) (with or without gain set) range pressure
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