I need to monitor the average amplitude of a magnetic flux density in Milli Gauss over a fixed set of hours every week day, and display this average per day, week , month, and year. an online running average is also required.
1. could you guide me to a gauss meter (perhaps by F. W. Bell series 4000) and a pico data logger that will do the job for values of 0.5-100milli Gauss at 50Hz
2. could you guide me on the procedure to obtain the readings I need
3. is there any method to perform the data logging, averaging and display without the use of a PC, such as by a custom autonomous log+proccess and display system you can provide?
4. what happens to the collected data in a case of power failure?