Heavy oil mass flowmeter

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1. Specification parameters of Pitot tube flowmeter

1. Specification: DN50-DN5000 (mm); Insertion type: DN500-DN5000 (mm);

2、 Measurement accuracy: ± 6.0%; Repeatability: ± 0.1%;

3、 Range: Volume Flow Roll Capacity: 10:1; Quality elimination flow rate: 8:1;

4、 Work pressure: Pitot tube without lifting function type: ≤ 20MPa; Adjustable type of averaging tube: ≤ 10MPa;

5、 Fluid temperature: ≤ 450 ℃;

6、 Medium viscosity: ≤ 30CP (equivalent to Tamin heavy oil);

7、 Material: Pitot tube, three valve group: various grades of stainless steel (optional); Main pipe and flange: stainless steel or carbon steel (optional);

2. What does drive% mean for Emerson mass flow meters?

The "drive%" on Emerson mass flow meters refers to the drive percentage, which represents the proportion of power required to maintain sensor vibration to the maximum allowable drive power.

. 1. The specific meaning of Drive% value directly reflects the workload of the core vibration system of the flowmeter. Sensors measure fluid mass flow rate through vibration, and this numerical value displays the ratio of the power consumed to maintain the standard vibration state to the maximum available driving power of the equipment. 2. Core function operation status monitoring: Under normal operating conditions, Drive% usually maintains a stable value (typical range is 10% -50%), and numerical stability indicates that the vibration system is working normally. Fault diagnosis indicators: Abnormal increase in numerical value may indicate sensor blockage, sudden change in fluid density, or installation stress problems; Abnormal decrease may indicate cavitation or sensor malfunction Typical param Heavy oil mass flowmeter

eter wide range varies depending on different models (such as Micro Motion F series/S series), and the normal Drive% range varies: - Low viscosity fluids (liquefied gas/light oil): usually maintained at 15% -30% - High viscosity fluids (heavy oil/slurry): may reach 30% -50% - Alarm threshold: generally set at 60% warning, triggering emergency alarm when exceeding 80% When the value consistently exceeds 60%, it is necessary to check: - whether there is sediment adhesion inside the sensor - whether the process fluid density exceeds the design range - whether there is mechanical stress in the installation pipeline - whether the junction box is affected by moisture and causes changes in electrical characteristics. The latest version of Micro Motion flowmeter (2023 diagnostic manual) has linked Drive% with enhanced spectrum analysis function and can achieve predictive maintenance alarm through Emerson Plantweb platform.

3. Which is better, piston flowmeter or gear flowmeter?

Gear flowmeter is a type of volume key hole flowmeter used for precise continuous or intermittent measurement of liquid flow rate in pipelines. It is particularly suitable for flow measurement of high viscosity media such as heavy oil, polyvinyl alcohol, and resin.

. Piston flowmeter is an online installation, mechanical flow switch used for liquid or gas media Minimal pressure loss, good repeatability, anti fouling ability, complete isolation between mechanical and electronic parts, suitable for low flow economy models. If the flow rate you want to measure is not large, it is better to use a piston type. If you want to measure a large flow rate, you can use a gear type one. If measuring gas flow rate, only piston type can be used.

1. Specification parameters of Pitot tube flowmeter

2. What does drive% mean for Emerson mass flow meters?

3. Which is better, piston flowmeter or gear flowmeter?

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