公开(公告)号：US20140112368A1

公开(公告)日：2014-04-24

申请号：US14143676

申请日：2013-12-30

Applicant: Rosemount Inc.

Inventor： Loren Michael Engelstad ,  Dirk Willy Bauschke ,  Jason Harold Rud

IPC: G01K15/00

CPC classification number: G01K15/005 ,  G01K1/14 ,  G01K15/00

Abstract: A method for calibrating a transmitter with measurement circuitry electrically connected to first and second input terminals includes connecting a primary temperature sensor to the first input terminal and connecting a calibrated reference device to the second input terminal. The measurement circuitry is calibrated with respect to the first input terminal according to signals received from the second input terminal while measuring temperature according to signals received from the first input terminal.

Abstract translation: 用于校准具有电连接到第一和第二输入端子的测量电路的发射机的方法包括将初级温度传感器连接到第一输入端并将经校准的参考装置连接到第二输入端。 根据从第二输入端子接收的信号，测量电路相对于第一输入端子进行校准，同时根据从第一输入端子接收的信号测量温度。

公开(公告)号：US20140095095A1

公开(公告)日：2014-04-03

申请号：US13631048

申请日：2012-09-28

Applicant: Rosemount Inc.

Inventor： Jason Harold Rud ,  Loren Michael Engelstad

IPC: H03M1/10

CPC classification number: H03M1/1071 ,  G05B23/0221

Abstract: A process variable transmitter, includes an analog-to-digital (A/D) converter that receives a sensor signal provided by a sensor that senses a process variable and converts the sensor signal to a digital signal. A processor receives the digital signal and provides a measurement output indicative of the digital signal. A noise detector receives the sensor signal and generates a first value indicative of a number of positive noise events relative to a positive threshold value and a second value indicative of a number of negative noise events relative to a negative threshold value. The processor evaluates the noise count and generates a noise output, indicative of detected noise, based on the first and second values.

Abstract translation: 过程变量发送器包括模拟数字（A / D）转换器，其接收由感测过程变量的传感器提供的传感器信号，并将传感器信号转换为数字信号。 处理器接收数字信号并提供指示数字信号的测量输出。 噪声检测器接收传感器信号并产生指示相对于正阈值的正噪声事件的数量的第一值，以及指示相对于负阈值的负噪声事件的数量的第二值。 处理器基于第一和第二值来评估噪声计数并产生表示检测到的噪声的噪声输出。