Instrumentation system with multiple sensor modules (INSTRUMENTATION SYSTEM WITH MULTIPLE SENSOR MODULES)

摘要

The measuring device comprises a portable measuring instrument 36 with a display 40 and a plurality of individual sensor modules 20 and 34 which are connected to a measuring instrument 36 for measuring one of various parameters such as temperature, Respectively. Each sensor module includes sensors (22, 36) responsive to a particular stimulus and data memories (24, 38) that store information about the sensors. When the sensor module is connected to the measuring instrument, the measuring instrument accesses the sensor module's memory to input data corresponding to the sensor type, accuracy code, calibration point data and calibration date. The measuring instrument compares the current date with the calibration date code to determine if the sensor module requires recalibration. The measuring instrument uses the accuracy code data to determine the number of significant digits to be displayed by the display on the display. The measuring instrument calibrates the measuring instrument with respect to the sensor module using the sensor type code and calibration point and selects the algorithm used to calculate the current value measured by the sensor module.