Patent ID: 8528382
Filing Date: 2013-09-10
Classification: G01F,G01K

Abstract:
1. A calibration device for mass flow meters comprising: at least one test piece measuring section having a flow-through area and being constructed to hold a test piece to be calibrated within the flow-through area; at least one device for creating a flow of a medium through the flow-through area of the at least one test piece measuring section; and at least one temperature-measuring device for detecting a temperature of the medium, the at least one temperature-measuring device being arranged in the test piece measuring section with the at least one temperature-measuring device located outside of the flow-through area, wherein the at least one temperature-measuring device is an ultrasonic temperature-measuring device that is configured to emit an ultrasonic signal into the medium and determine the temperature of the medium by measuring a speed of the emitted ultrasonic signal, further comprising: an invasive reference temperature-measuring device for determining a medium temperature (T a reference ultrasonic temperature-measuring device arranged adjacent to the invasive reference temperature-measuring device for determining an ultrasonic speed (v means for obtaining a relationship (v