190 ☌ Huge mass of sensor needs long time to reach isothermal conditions. Isothermal conditions enable excellent accuracy. 40 to 200 ☌ Integrated temperature sensor in flow. Needs to be calibrated to compensate for fluid viscosity.Ġ.02 to 10,000 cP with multiple capillaries.ĭepends on the accuracy of the time keeper.Ġ to 30,000 psi (2000 bar) Fully compensated, No need for calibration.Ġ to 15,000 psi (1000 bar) Significant, user calibrated. Torsional Balanced Resonator (Rheonics DVM)Ĭannot measure. High pressure drop High flow rate Needs bypass line Solid content in fluid and entrapped gas. Huge wall effect, requires special adapters for each flow condition.Ĭauses pressure drop. Large solids can get lodged between the sensing element. High, need straight pipe upstream/downstream Static or flowing (needs flow rate information for compensation) Not suitable for flow through installation in large pipe diameters. Huge size - depends on the pipe diameter. Need complex application-specific installation. Vulnerable to pipe noise and external vibration. Needs a large adapter for each pipe diameter. Smallest inline process density sensor in market (1” x 2.5”) Needs a 1” instrument port for any pipe diameter. Fast changing fluid temperature leads to high errors in measurement.įlow condition Installation requirement Size Sensor tube wrapped in insulation and with controlled heaters. Significant influence on density measurement. Standard to 60 ☌, HT version to 350 ☌ 1☌ stability. 50 to 200 ☌ No inbuilt temperature sensor. Isothermal conditions enable excellent density accuracy. No need for calibration.Ġ to 3000 psi (200 bar) Significant, not compensated.Ġ to 1400 psi (100 bar), special to 6000 psi (400 bar) Significant, needs to be compensated.Ġ to 750 psi (50 bar) Claimed no influence. Significant viscosity influence, can not achieve density accuracy without re-cal.Ġ to 15,000 psi (1000 bar) Fully compensated. Needs to be calibrated for each viscosity fluid. Coriolis meter calibration constants change for high viscosity fluid. Up to 50 cP Higher viscosity (up to 200 cP) fluids have a larger error of 0.004 g/cc.ĭensity measurement should not be affected. Up to 300 cP Simultaneously measures fluid dynamic viscosity. Torsional Balanced Resonator Density (Rheonics DVP)Ġ.001 g/cc (0.0001 g/cc and better demonstrated)Ġ.001 g/cc (0.0001 g/cc for defined conditions)Ġ.001 g/cc (0.0001 g/cc for best conditions) Needs significant process deployment due to variation between instruments. Large size causes temperature variation leading to high measurement errors. Not suitable for other viscosity monitoring applications due to limited range and accuracy. One trick pony aimed at Fuel viscosity monitoring. Not suitable for other viscosity applications. Significant wall effect, requires special adapters for each flow condition. Smallest inline process viscometer sensor in market (1” x 3”) Needs a 3/4” instrument port for any pipe diameter. Fast changing fluid temperature leads to high errors in measurement. For marine fuel viscosity monitoring, meets specs. 50 to 200☌ No inbuilt temperature sensor. Isothermal conditions enable excellent viscosity accuracy. Temperature rating Temperature calibration No data on any other application besides marine fuel.Īpplication notes and customer data exists for use in non-Newtonian fluids.Ġ to 3000 psi (200 bar). Low usage in other viscosity applications. Newtonian & non-Newtonian Stable, repeatable in non-Newtonian fluids Torsional Balanced Resonator Viscometer (Rheonics SRV)Ĭlaimed within 1% (customer feedback suggest worse)
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