Process Instrumentation
Multi-Hole Balanced Flowmeter
The multi-hole balanced flowmeter is a high-accuracy differential-pressure flowmeter with a proprietary multi-hole throttling structure. It provides stable differential pressure with low permanent pressure loss and is suitable for gas, liquid and steam flow measurement under demanding operating conditions.
Product Overview
Product Overview
The multi-hole balanced flowmeter is a high-accuracy differential-pressure flowmeter with a specially designed multi-hole throttling structure. The size and distribution of the holes are engineered according to process data and application requirements.
It provides a stable differential pressure with relatively low permanent pressure loss, making it suitable for measuring gases, liquids and steam, especially in high-flow, high-velocity and complex operating conditions.
Working Principle
Based on Bernoulli’s equation, the instrument generates differential pressure as fluid passes through the throttling element. Flow rate is calculated from this differential pressure together with fluid properties and process parameters.
Performance Specifications
| model | NFCY-PH |
| Measuring medium | Gas, liquid, steam |
| Flow range | Depends on nominal diameter |
| Accuracy | ±0.5%、±1.0%、±1.5% |
| Repeatability | ±0.2% |
| Turndown | 10:1～30:1 |
| β value | 0.25～0.90 optional |
| Reynolds number | 200～10000000 |
| working temperature | -196℃～+600℃ |
| work pressure | ≤42MPa |
| Communication method | 4-20mA+HART、RS485 |
| process connection | Flange, thread, welding |
| Protection level | IP66 |
| Explosion-proof level | Ex db IIC T6 Gb |
| Wetted material | Carbon steel, stainless steel, chromium-molybdenum steel, duplex steel, Hastelloy, Monel alloy, titanium (special materials can be customized) |