Pressurized Fluid Density Scale

Introduction:-

Drilling fluids and cements often have a considerable amount of air entrained or trapped within the fluid that may give erroneous results when determining fluid density using conventional equipment. This air volume may be decreased to a negligible quantity by pressurizing the sample cup, which will then give more accurate density readings of the fluid itself.

Description:-

The Pressurized Fluid Density Scale is similar to a standard mud balance. A sample cup of known volume is balanced by a fixed counterweight at the opposite end of a balance beam. A sliding weight rider moves along the graduated scale and a level bubble on the beam indicates when the system is in balance. The position of the rider on the graduated scale indicates the density of the sample. In the center of the lid is a check valve that allows a one-way flow of test fluid into the sample cup. A plunger attaches to the check valve and applies pressure to the sample cup. When the pressure in the sample cup increases, the check valve automatically closes, sealing off the pressure inside. A cap holds the lid in place.

The balance beam has four graduated scales:

- 52 – 164 lb / ft3

- 6.9 – 21.9 ppg

- .83 – 2.63 specific gravity

- 360 – 1,130 PSI / 1,000 ft

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