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AS-MLV-P2 датащи(PDF) 11 Page - ams AG |
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AS-MLV-P2 датащи(HTML) 11 Page - ams AG |
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11 / 24 page ![]() ams Datasheet Page 11 [v1-01] 2015-Oct-12 Document Feedback AS-MLV-P2 − Application Information Heater Calibration As mentioned in the previous chapter the each sensor has its own set-point at the operation temperature. This set-point can be determined by a previous calibration step. This means that the AS-MLV-P2 is started at room temperature (23°C ± 3°C) and powered with 34mW. With these conditions the heater resistance is measured and stored into the EEPROM. This heater resistance is the certain set-point which is kept constant with the regulating PWM during operation. General Characteristics The sensor has some native characteristics which should be considered in the application development. Burn-In Behavior Once in lifetime the sensor performs a special burn in behavior, this curve is characterized in three phases which are described with the following figure. Figure 12: Burn-In of Sensor Description Duration Phase 1 Fast increase of the sensor resistance ~ 10 hours Phase 2 Plateau with nearly stable baseline ~ 12 hours Phase 3 Long drift like decrease of the sensor resistance > 4 days |
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