Thermal mass flow meters have different accuracy levels depending on the model, measuring range, and application.
Typical accuracy specifications:
Standard accuracy:
±(1.0% of reading) + 0.5% FS
High accuracy version:
±(0.5% of reading) + 0.5% FS
Key notes for customers:
It measures mass flow directly, no temperature or pressure compensation needed.
Accuracy is stable over a wide turndown ratio (typically 10:1 up to 100:1).
Performance is excellent at low flow rates, where many other flow meters struggle.
Accuracy can be affected by:
Moisture or liquid droplets in gas
Dust or oil contamination
Significant changes in gas composition
Post time: Mar-13-2026