Krohne OPTISWIRL 4070 Vortex Flowmeter
Product Overview
The Krohne OPTISWIRL 4070 Vortex Flowmeter is a durable, 2-wire multivariable device built for reliable measurement of steam, gases, and liquids in tough industrial settings. Its fully welded stainless steel construction resists corrosion and withstands high pressures up to 100 bar and temperatures to 240°C, making it perfect for steam applications in power plants and refineries. With integrated pressure and temperature sensors, it calculates mass flow directly, reducing the need for multiple devices. Supporting HART and FOUNDATION Fieldbus, the OPTISWIRL 4070 ensures seamless integration and low maintenance for enhanced process efficiency.
Key Features
- Fully Welded Construction: Stainless steel body for high corrosion and pressure resistance.
- Integrated Compensation: Built-in pressure and temperature sensors for accurate mass flow.
- Low Pressure Loss: Optimized bluff body design minimizes energy consumption.
- 2-Wire Technology: Simplifies wiring and installation.
- Wide Medium Compatibility: Handles steam, wet gases, and liquids up to 240°C.
- Digital Communication: HART, FOUNDATION Fieldbus for remote diagnostics.
- Robust in Harsh Conditions: Operates in dusty, vibrating, and high-humidity environments.
- Easy Maintenance: No moving parts, long service intervals.
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 |
| Size Range | DN15 to DN300 (½" to 12") |
| Pressure Range | Up to 100 bar (1450 psi) |
| Temperature Range | -200°C to +240°C (-328°F to +464°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 engineered for robust flow measurement in industrial processes:
- Steam Distribution: Accurate monitoring in power plants and heating systems.
- Gas Processing: Reliable measurement of wet gases in refineries.
- Chemical Industry: Flow control of liquids and vapors in reactors.
- Oil and Gas: Custody transfer and process line monitoring.
- Water and Wastewater: Efficient flow measurement in treatment facilities.
Frequently Asked Questions
Why choose the OPTISWIRL 4070 for steam?
Its welded construction and compensation handle high temperatures up to 240°C reliably.
How does multivariable measurement save costs?
One device replaces multiple sensors, reducing installation and maintenance expenses.
Is it suitable for vibrating pipelines?
Yes, advanced signal processing filters vibrations for stable readings.
What communication protocols are supported?
HART, FOUNDATION Fieldbus, and Profibus PA for digital integration.
Does it require frequent calibration?
No, stable design ensures long-term accuracy without recalibration.
