Tag Archives: rpm

Low Frequency Measurements Using 8B45 Amplifiers

Data Acquisition > Mixed Measurements DATAQ Instruments sells an amplifier into applications that require frequency measurements in the range of 500 Hz to 100 kHz full scale. The model is DI-8B45, and it’s sold with different suffix numbers that each defines a fixed full scale range in Hz or kHz. The amplifier is useful when Read More

How To Maximize RPM Measurement Resolution

Data Logger > Graphtec > GL820 A Graphtec GL820 data logger user could not understand why the resolution of the instrument was not better than 60 RPM. He connected the output of a reflective tape sensor to a discrete input programmed for REVOL, which applies an automatic scaling operation as follows: Clearly from the above Read More