Key parameters for selection:

• Media Type: Newtonian or non-Newtonian, contains particles, corrosive
• Viscosity Range: Low (<100 cP), Medium (100-10,000 cP), High (>10,000 cP)
• Operating Temperature: Ambient, Medium (80-150°C), High (>150°C)
• Operating Pressure: Atmospheric, Medium-Low, High (>10 MPa)
• Installation Location: Pipeline, reactor, tank, vessel bottom
• Output Requirements: 4-20mA analog, RS485 Modbus, PLC/DCS integration
• Explosion-Proof: Whether Ex-proof certification is required

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Inline viscometers are installed directly on production pipelines for continuous real-time measurement. Lab viscometers require sampling and offline measurement. Inline measurement avoids sampling errors, temperature changes, and time delays, providing a truer representation of process viscosity and enabling direct PLC/DCS automatic control.

In an increasing number of applications, domestic inline viscometers now meet performance requirements. HYZY HYND-51/81 series have extensive successful cases in petroleum, chemical, and resin industries with quality comparable to foreign products at superior cost performance. We recommend on-site comparative testing.

Inline viscometers are factory-calibrated. Annual calibration checks are recommended under normal conditions. More frequent verification may be needed for harsh media or severe operating conditions. HYZY provides on-site calibration services.

The sensor element must be fully immersed in the measured media, avoiding bubbles and sediment interference. Common locations: straight pipe sections, reactor bypass circulation lines, tank sidewalls or bottoms. Specific placement depends on the piping and instrumentation diagram.

Yes. Resin reactors are a typical application for inline viscometers. They are typically installed on reactor bypass circulation lines or vessel sidewalls to track viscosity changes during polymerization and determine reaction endpoints.