System and Method for Generating a Change in Pressure Proportional to Fluid Viscocity

A viscosity dependent pressure differential system comprising

• a first pilot stream connectable to a main stream, said first pilot stream comprising
• a first inlet connected to said mainstream;
• a first section comprising a first predominate pressure loss characteristic, connected to said first inlet;
• a first junction connected to said first section;
• a second section comprising a first predominate pressure loss characteristic, connected to said first junction;
• and
• a first outlet that connects said second section and to said mainstream;
• a second pilot stream connectable to a main stream, said second pilot stream comprising
• a second inlet connected to said mainstream;
• a third section comprising a third predominate pressure loss characteristic, connected to said tinlet;
• a second junction connected to said third section;
• a fourth section comprising a fourth predominate pressure loss characteristic, connected to said third junction;
• and
• a second outlet that connects said second section and to said mainstream;
• and
• a pressure sensing device connecting that reads a differential pressure across said first junction and said second junction.