Proline Promass A: Coriolis Mass Flowmeter for Ultra-Low Flow Measurement
In industrial process measurement, accurate metering of ultra-low flow has always been a challenge. Proline Promass A (8A3C / 8A5C), as the lightweight champion among Coriolis mass flowmeters, is designed specifically for extremely low flow scenarios, providing a high-precision, high-stability solution.
Measurement Principle: How the Coriolis Force Achieves Direct Mass Flow Measurement
Coriolis mass flowmeters operate based on the Coriolis effect. When fluid flows through a vibrating measuring tube, a phase difference proportional to the mass flow is generated. By detecting this phase difference, the mass flow can be directly obtained.
Proline Promass A adopts a single-tube or dual-tube design, optimizing the tube diameter and vibration frequency for ultra-low flow, thereby maintaining high sensitivity even at extremely low flow rates.
Core Advantages: Why Choose Promass A
- Ultra-low flow measurement capability: Minimum measurable flow as low as 0.1 kg/h, meeting the micro-metering needs of fine chemicals, pharmaceuticals, and other fields.
- High precision: Mass flow measurement accuracy up to ±0.1%, with excellent repeatability.
- Lightweight design: Compact structure, light weight, easy to install and maintain.
- Multi-parameter output: Simultaneously measures mass flow, density, and temperature, and calculates volumetric flow.
- Wide turndown ratio: Adapts to a wide range of variations from micro to small flows.
Typical Application Scenarios
Proline Promass A is widely used in the following fields:
- Pharmaceutical industry: Precise proportioning of active ingredients.
- Fine chemicals: Micro-injection of catalysts and additives.
- Food and beverage: Addition control of flavors and colorants.
- Laboratory and R&D: Flow monitoring of pilot and small-scale test devices.
Technical Parameters Overview
| Parameter | Specification |
|---|---|
| Model | 8A3C / 8A5C |
| Measurement Principle | Coriolis Force |
| Mass Flow Range | 0.1 kg/h to 100 kg/h (depending on nominal diameter) |
| Accuracy | ±0.1% o.r. |
| Wetted Materials | Stainless steel, Hastelloy, etc. |
| Output Signals | 4-20 mA, pulse, Modbus, HART |
| Process Connections | Thread, clamp, flange |
Selection and Installation Precautions
- Select the appropriate nominal diameter based on the actual flow range, ensuring the normal flow is between 20% and 80% of the range.
- Avoid pipe stress during installation to ensure the measuring tube is not affected by additional forces.
- For easily vaporizing liquids, it is recommended to increase back pressure to prevent gas-liquid two-phase flow.
- Perform zero-point calibration regularly to ensure long-term measurement accuracy.
Correct selection and installation can fully leverage the performance advantages of Promass A in ultra-low flow measurement.
Summary
With its ultra-low flow measurement capability, high precision, and lightweight design, the Proline Promass A Coriolis mass flowmeter has become an ideal choice in the field of micro-flow metering. Whether in the pharmaceutical, chemical, or food industry, it can provide reliable mass flow data to support process optimization and quality control.