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In any of the excitation current is applied to the front of the sensor, the voltage across the sensor latched to the preexisting storage capacitor. Once applied to the excitation current, the voltage… (More)
A preexisting voltage across a sensor is latched to a storage capacitor prior to any excitation current being applied to the sensor. Once the excitation current is applied, the voltage on the storage… (More)
A process temperature transmitter is operable with at least one temperature sensor having a plurality of leads. The temperature transmitter includes measurement circuitry operably coupleable to the… (More)
本发明涉及一种在变送器中实现的劣化传感器检测。 一种过程变量变送器包括存储器，所述存储器存储已滤波传感器值和已滤波变化率值，基于先前接收的传感器值计算所述已滤波传感器值，基于先前的变化率值计算所述已滤波变化率值。 过程变量变送器还包括控制器，所述控制器接收传感器值，并且将传感器值与已滤波传感器值进行比较来获得变化率值。… (More)
A process variable transmitter (10) includes a memory (16) that stores a filtered sensor value that is calculated based on a prior received sensor value and a filtered rate of change value that is… (More)