T7SG series includes transmitters for continuous specific gravity measurement in liquid, mud, cement slurry, etc…, manufactured using two seals placed at a fixed distance and connected through capillaries to a DP cell. The instrument gives the specific gravity value of the product by measuring the static differential pressure between the two seals (Dp)and applying the formula SG=Dp/d where “SG” is the specific gravity, “Dp” is the differential pressure and “d” is the distance between the two seals. T7SG series transmitters are manufactured with an especially heavy duty mechanical construction and have analogue 4÷20mA + digital HART® protocol output.