Krohne OPTISWIRL 4070 Vortex Flowmeter
Product Overview
The Krohne OPTISWIRL 4070 Vortex Flowmeter is a state-of-the-art multivariable instrument designed for accurate measurement of volumetric and mass flow in steam, gases, and liquids. Utilizing the vortex shedding principle with an integrated pressure and temperature sensor, it provides simultaneous measurement of flow, pressure, and temperature in a single device, eliminating the need for multiple instruments. With a robust construction and advanced signal processing, the OPTISWIRL 4070 ensures reliable performance in high-temperature and high-pressure applications, making it ideal for power generation, chemical processing, and oil and gas industries. Its HART and FOUNDATION Fieldbus communication enables seamless integration for enhanced process efficiency.
Key Features
- Multivariable Measurement: Simultaneously measures flow, pressure, and temperature for mass flow calculation.
- Vortex Shedding Technology: Reliable detection with low pressure loss and no moving parts.
- High-Temperature Capability: Handles up to 450°C (842°F) for steam applications.
- Wide Pressure Range: Up to 100 bar (1450 psi) for demanding processes.
- Advanced Signal Processing: Filters noise from vibrations and pulsations for stable readings.
- HART and Fieldbus: FOUNDATION Fieldbus and Profibus PA for digital integration.
- Robust Design: All-welded construction with no gaskets for leak-proof operation.
- Easy Installation: Flange or wafer connection options.
Technical Specifications
| Parameter | Specification |
| Measuring Principle | Vortex Shedding |
| Flow Velocity Range | 0.5–10 m/s (gas/steam), 0.3–7 m/s (liquid) |
| Accuracy | ±1% of reading for volumetric flow |
| Size Range | DN25 to DN300 (1" to 12") |
| Pressure Range | Up to 100 bar (1450 psi) |
| Temperature Range | -200°C to +450°C (-328°F to +842°F) |
| Output Signals | 4–20 mA HART, FOUNDATION Fieldbus, Profibus PA |
| Power Supply | 10.5–45 VDC |
| Enclosure Rating | IP66/IP67 |
| Certifications | ATEX, IECEx, SIL 2 |
Applications
The Krohne OPTISWIRL 4070 Vortex Flowmeter is suited for multivariable flow measurement in industrial processes:
- Power Generation: Steam flow in boilers and turbines.
- Chemical Processing: Gas and liquid flow in reactors.
- Oil and Gas: Custody transfer and process monitoring.
- Water Treatment: Flow of treated water and chemicals.
- Food and Beverage: Hygienic flow measurement in pipelines.
Frequently Asked Questions
How does the OPTISWIRL 4070 measure multiple variables?
Integrated sensors for flow, pressure, and temperature provide simultaneous data for mass flow calculation.
Is it suitable for high-temperature steam?
Yes, it handles up to 450°C for superheated steam applications.
What is the accuracy for volumetric flow?
±1% of reading, with options for higher precision.
Can it be used in hazardous areas?
Yes, certified for ATEX and IECEx in explosive environments.
Does it require straight pipe runs?
Minimal: 10D upstream, 5D downstream for standard installations.
