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How to choose the most cost-effective solution for gas turbine flow meter?

2025-04-23
 How to choose the most cost-effective solution for gas turbine flow meter?

Gas turbine flowmeters are commonly used in natural gas and industrial gas applications due to their high accuracy and fast response. However, their prices vary significantly from thousands to tens of thousands of yuan. Key factors influencing price include:

  1. Measurement Accuracy and Range Ratio

    • Accuracy:
      • Ordinary industrial grade: ±1.5% to ±2.5% (low price, general monitoring).
      • High-precision: ±0.5% to ±1.0% (high price, suitable for trade settlement).
    • Rangeability: A wider range (e.g., 20:1 or 30:1) increases applicability but also price.
    • Suggestion: Choose high-precision for trade measurement; economical models for general use.

  2. Material and Pressure Resistance

    • Body Material:
      • Aluminum alloy (economical), stainless steel (corrosion-resistant, higher price), special alloys (for corrosive gases, expensive).
    • Pressure Resistance: Standard (1.6 MPa), medium (4.0 MPa), and ultra-high (>10 MPa); higher resistance increases cost.
    • Suggestion: Use stainless steel or alloy for corrosive gases; select appropriate pressure ratings.

  3. Additional Functions and Intelligence

    • Signal Output: Basic (4-20 mA/pulse) vs. intelligent (HART/Modbus, more expensive).
    • Compensation Features: Flowmeters with built-in sensors (20%-50% higher price).
    • Explosion-proof Certification: Necessary for hazardous environments, increases costs.
    • Suggestion: Choose smart models for remote monitoring; explosion-proof for flammable areas.

  4. Installation and Maintenance Costs

    • Installation Method: Flange connection (costly but stable) vs. threaded connection (economical for small pipes).
    • Maintenance Cycle: High-end models (ceramic bearings) last up to 10 years, while low-end models require bearing replacement every 3-5 years.
    • Long-term Cost: Consider both initial and maintenance costs.

By evaluating these factors, users can make informed decisions within their budget.


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