1-20 hits ? wide temperature range model 1240 ultrastable pc board mountable pressure sensor 0-50 mv output absolute, differential and gage temperature compensated medical instrumentation calibration process control factory automation air flow management leak detection features -20 c to +85 c compensated temperature range 0.1% non-linearity 0.5% temperature performance 1.0% interchangeable span (provided by current set resistor) solid state reliability low power standard ranges range psig psid psia 0 to 15 0 to 30 0 to 50 0 to 100 description the model 1240 is a high performance temperature compensated, piezoresistive silicon pressure sensor packaged in a dual-in-line configuration and intended for cost sensitive applications where excellent performance and long-term stability are required. integral temperature compensation is provided over a range of -20c to +85c using laser-trimmed resistors. an additional laser-trimmed resistor is included to normalize pressure sensitivity variations, for interchangeability of 1%. gage and differential pressure ranges from 0-15 psi to 0-100 psi are available. absolute pressure ranges of 0-15 psia and 0-30 psia are available. multiple lead and tube configurations are also available for customizing the package for specific applications. please refer to the low pressure section for information on products with operating pressures less than 0-2 psi. for a compensated sensor using a gain set resistor as opposed to a current set resistor, please refer to the model 1230. dimensions
pc board mountable pressure sensor model 1240 ultrastable hits ? wide temperature range 1-21 june 2001 performance specifications supply voltage: see application schematic ambient temperature: 25c (unless otherwise specified) notes 1. output span of unamplified sensor using current set resistor. 2. best fit straight line. 3. compensation resistors are an integral part of the sensor package; no additional external resistors are required. pins 7 and 8 must be kept open. 4. temperature range: -20 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 200 psi maximum, whichever is less. 10. wetted materials are glass, ceramic, silicon, rtv, nickel, gold, and aluminum. 11. soldering of lead pins: 250c for 5 seconds maximum. 12. tube length: l=470 5 mil, s=300 3 mil, n=no tube. 13. lead pins can either be in the same or the opposite direction as the pressure tube. see connections/dimensions drawing for lead configurations. 14. normalized offset bridge voltage: 7 days. 15. 1 year. connections ordering information application schematic parameters min typ max units notes full scale output span 49.5 50.0 50.5 mv 1, 3 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 ? temperature error ? span 0.3 0.5 % span 3, 4 temperature error ? zero 0.1 0.5 % span 3, 4 temperature coefficient ? resistance 0.145 %/c 4 thermal hysteresis ? zero 0.05 % span 4 short term stability of offset 0.05 % span 14 short term stability of span 0.05 % span 14 long term stability of offset 0.1 % span 15 long term stability of span 0.1 % span 15 supply current 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 ? 8 insulation resistance (50 vdc) 50 m ? pressure overload 3x rated 9 operating temperature ?40c to +125c storage temperature ?50c to +150c media non-corrosive gases compatible with wetted materials 10 weight 3 grams 1240 - 015 g - 3 s pressure tubes (l, s, n - see note 12) lead configuration (1, 3 - see note 13) type (g = gage, a = absolute, d = differential) model range pressure feel free to contact customer service with any questions at toll free 1(800)745-8008; phone (757)766-1500; fax (757)766-4297
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