公开(公告)号：US08303179B2

公开(公告)日：2012-11-06

申请号：US12295591

申请日：2007-06-02

Applicant: William H. Owen ,  Laurence Clifford

Inventor： William H. Owen ,  Laurence Clifford

IPC: G01K7/00 ,  G01K7/01 ,  G01K1/08

CPC classification number: G01K1/14 ,  G01K7/01 ,  G01K7/16 ,  G01K2201/00

Abstract: In an exemplary embodiment, a temperature sensor and a 4-20 mA transmitter on a single flexible circuit subassembly with a separate housing suitable for use in industrial control or HVAC applications. In a preferred embodiment, a narrow flex circuit substrate includes a silicon diode-based surface-mount sensor at a sensor end, a surface-mount programmable transmitter IC on a flex circuit substrate in the transmitter section, conductive traces connecting the sensor to the transmitter IC, and two conductive pads at an output end for connecting the 4-20 mA output to a pair of external wires. Additional traces on the flex subassembly are provided for testing and programming the transmitter IC and sensor. The sensor end of the flex subassembly is mounted in a metal sensor tube, filled and sealed in the same manner as RTD or thermistor sensors with leads are currently assembled for use in industrial control or HVAC applications.

Abstract translation: 在示例性实施例中，温度传感器和4-20mA变送器在单个柔性电路子组件上，具有适用于工业控制或HVAC应用的单独壳体。 在优选实施例中，窄的柔性电路衬底包括传感器端的基于硅二极管的表面贴装传感器，在发射器部分中的柔性电路衬底上的表面安装可编程发射器IC，将传感器连接到发射器 IC和输出端的两个导电焊盘，用于将4-20 mA输出连接到一对外部电线。 提供柔性子组件上的附加走线用于测试和编程发射器IC和传感器。 柔性子组件的传感器端安装在金属传感器管中，以与RTD或热敏电阻传感器相同的方式填充和密封，导线当前组装用于工业控制或HVAC应用。