Maintenance Cycle for Micro Gear Flowmeters‌

Maintenance Cycle for Micro Gear Flowmeters‌

The maintenance interval should be dynamically adjusted based on actual operating conditions and equipment status, generally following this framework:

️ ‌Core Maintenance Principles‌

Base Cycle Recommendations‌

Standard conditions‌: Clean gear chamber and inspect filters every ‌3–6 months‌.

High-contamination/high-load scenarios‌ (e.g., particle-laden fluids, continuous operation): Shorten to ‌monthly maintenance‌.

Clean/low-load scenarios‌ (e.g., constant temperature, intermittent use): Extend to ‌≤1 year‌.

Mandatory Maintenance Triggers‌

Physical damage‌: Immediate maintenance and calibration required if gears jam, seals leak, or impact occurs.

Fluid property changes‌: Significant shifts in viscosity or composition (e.g., lubricant type change).

Reading anomalies‌: Service immediately if zero drift or measurement deviation ‌exceeds ±0.5%‌.

🔧 ‌Conditions for Extending Maintenance Cycles‌

All requirements below must be met (max. extension ‌≤2 years‌):

Stable periodic verification‌: Quarterly error fluctuation ‌< ±0.2%‌;

Convergent historical data‌: 3 consecutive calibrations show errors ‌< 50% of tolerance limit‌;

Stable environment‌: Temperature variation ‌≤ ±10°C‌, no strong vibration.

After extension: ‌Monthly inspection‌ of filters and gear wear.

⚒️ ‌Key Maintenance Procedures‌

Task‌ ‌Critical Steps‌ ‌Frequency‌

Gear chamber cleaning‌ Remove adhered residues to prevent jamming High-contamination: ‌Monthly‌

Filter replacement‌ Replace when pressure differential ↑‌10%‌ (prevents gear wear) Standard: ‌3 months‌

Seal integrity test‌ Pressure testing with soap solution for leaks ‌Every maintenance‌

Static zero calibration‌ Zero adjustment under no-flow conditions ‌Triggered by abnormal readings‌

⚠️ ‌Special Scenario Requirements‌

Trade transfer/critical processes‌: Shorten cycle by ‌30%‌ + increase verification frequency.

Explosive atmospheres‌: Prioritize ‌power-free designs‌ to avoid electronic failure.

Viscous media‌ (e.g., resin, jam): ‌Heat-flush pipelines‌ to prevent solidification.

Note‌: Initial cycles should reference manufacturer manuals but ‌must be adjusted for actual conditions‌. Post-maintenance signal response testing is mandatory.

References & Standards‌

[1] ISO 4064-2:2017 (Liquid flow measurement)

[2] IEC 60079-11 (Explosive atmospheres)

[3] ASME MFC-015 (Viscous fluid guidance)

[4] Manufacturer field service data (e.g., KEM, SENSIRION)

[5] NIST traceable calibration protocols

This translation retains technical precision while adapting terminology (e.g., "静态调零" → "static zero calibration") and structure for global engineering audiences. Key symbols (⚙️⚠️🔧) are preserved for visual consistency.