Presenting dct-7088 portable digital correlation transit time flowmeter from ipwt-peek [u.S.A.], the world’s most advanced portable transit time flowmeter having applications in potable water, ultrapure liquids, hvac, de-ionized water, petroleum products and water and waste management’s and works on the basic principle of digital signal processing [dsp] with correlation detection method and finds major application is in water supply boards, municipalities and refineries.