1-12 hits C low pressure model 1220 low pressure pc board mountable pressure sensor 0-10" h 2 o to 0-1 psi 0-50 mv output low cost temperature compensated t medical instruments t air flow measurement t hvac t process control t factory automation t leak detection features t dual-in-line package t 0.1% non-linearity t 1.0% interchangeable span (provided by current set resistor) t temperature compensated t solid state reliability t low power standard ranges range psi in h 2 o 0 to1 c c 0 to10 cc description the model 1220 is a 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. the 1220 is a fixed voltage referenced, current set version, designed for 1% interchangeability to provide a 50 mv span at 1 psi. integral temperature compensation is provided over a range of 0-50c using laser-trimmed resistors. an additional laser- trimmed resistor is included to adjust the gain of an external differential amplifier. this provides sensitivity interchangeability of 1%. the sensing element used in the low pressure model 1220 includes a double bossed design that produces a sensor output of 100 mv (typical) at 1 psi. the 1220 is also available in ranges up to 0-100 psi. for a compensated sensor using a gain set resistor as opposed to a current set resistor, please refer to the model 1210. dimensions
pc board mountable pressure sensor model 1220 low pressure hits C low pressure 1-13 april 2000 performance specifications supply voltage: see application schematic ambient temperature: 25c (unless otherwise specified) notes 1. output span of unamplified sensor. 2. compensation resistors are in an integral part of the sensor package; no additional external resistors are required. 3. best fit straight line. 4. temperature range: 0-50c in reference to 25c. 5. for a zero-to-full scale pressure step change. 6. 10 hz to 1khz. 7. tube length: l=470 5 mil, s=300 3 mil, n=no tube. 8. lead pins can either be in the same or the opposite direction as the pressure tube. see dimensions drawing for lead configurations. 9. wetted materials are glass, ceramic, silicon, rtv, nickel, and aluminum. 10. 0-10" water column performance is based on testing at 1 psi full scale pressure. connections ordering information application schematic parameters pressure range units notes 0 - 1 psi 0 - 10 in h 2 o (note 10) min typ max min typ max full scale output span 49.5 50 50.5 24.75 25 25.25 mv 1 zero pressure output 2 2 + mv 2 pressure non-linearity 0.1 0.25 0.05 0.1 % span 3 pressure hysteresis 0.01 0.05 0.01 0.1 % span input & output resistance 2500 4400 6000 2500 4400 6000 w temperature error C span 0.5 1.0 0.5 1.0 % span 4 temperature error C zero 0.5 1.0 1.0 3.0 % span 4 thermal hysteresis C zero 0.1 0.2 % span 4 supply current 1.5 2.0 1.5 2.0 ma response time (10% to 90%) 1.0 1.0 ms 5 output noise 1.0 1.0 v p-p 6 output load resistance 2 2 w insulation resistance (50 vdc) 50 50 w long term stability 0.2 0.5 % span/yr pressure overload 20 20 psi operating temperature C40c to +125c storage temperature C50c to +150c media non-corrosive gases compatible with wetted materials 9 weight 3 grams
|
