A level gauge based on gamma radiation was used to detect the level of liquid in any cylinder. Gamma radiation was used because of its penetration power to pass through metal and liquid. The change in gamma intensity is a measure of liquid level. The processed signal from detector corresponding to gamma intensity was available. The aim was to develop microcontroller based intelligent counter and display unit that can automatically warn the user about the absence of liquid in the cylinder by giving alarm, and thus indicate the level of liquid present in the cylinder. The paper describes the selected hardware for the counter unit, the flow chart of the program and the obtained results of the testing. It is concluded that the counter unit was developed and tested successfully. The work was carried out in BARC during summer training in May-July 2015.