OPTISWIRL 4200 Vortex Flowmeter DN50
Part number OPTISWIRL 4200 C DN50 PN40
Two-wire vortex flowmeter for steam, gas and liquids with integrated pressure and temperature compensation, ±0.75 % liquid / ±1 % gas accuracy, SIL2.
- CE
- ATEX
- IECEx
- SIL2
- HART 7
Overview
The OPTISWIRL 4200 is a two-wire vortex flowmeter for saturated and superheated steam, gases and low-viscosity liquids, available with integrated temperature and pressure sensors so that mass flow and energy are compensated inside the meter. Accuracy is ±0.75 % of rate for liquids and ±1 % for gas and steam, with a 20:1 turndown and a reduced-bore (dual-reduction) version that extends measurement to low flows. The all-welded stainless-steel body has no gaskets in the process, and Intelligent Signal Processing filters pipe vibration. Typical use is utility steam metering for energy management, where the built-in energy calculation (gross heat) removes the need for a separate flow computer.
Key features
- Two-wire vortex meter with optional integrated pressure and temperature compensation
- Accuracy ±0.75 % (liquid), ±1 % (gas/steam); turndown 20:1, extended with dual-reduction bore
- All-welded 316L body, no gaskets in contact with the medium
- Energy and net heat calculation on board; gross/net steam measurement
- 4–20 mA HART 7, pulse; FF, PROFIBUS PA options; SIL2; ATEX, IECEx
Typical applications
- Steam metering for boilers and energy management
- Compressed air and nitrogen consumption measurement
- Thermal oil and hot-water loops
- Process gas flow in chemical plants
Technical specifications — OPTISWIRL 4200 C DN50 PN40
| Measurement | |
|---|---|
| Measuring principle | Vortex shedding, with optional integrated P/T compensation |
| Sizes | DN15–DN300, flanged or sandwich |
| Accuracy | ±0.75 % of rate (liquid), ±1 % (gas/steam) |
| Turndown | 20:1 (up to 50:1 with dual reduction) |
| Output | |
| Signal | 4–20 mA HART 7, pulse/status; FF, PROFIBUS PA options |
| Display | Graphic LCD with optical keys |
| Power | 14–30 V DC two-wire |
| Process | |
| Process temperature | -40…+240 °C (high-temperature version to +300 °C) |
| Process pressure | up to PN100 / Class 600 |
| Process connection | Flanges EN/ASME, sandwich |
| Wetted materials | 316L / 1.4404 all-welded |
| Environment | |
| Ambient temperature | -40…+65 °C |
| Enclosure | IP66/67 |
Specifications are summarised from the manufacturer's documentation for selection purposes. Always confirm against the current datasheet before design-in; we send the datasheet and the exact ordering code with every quotation.
Related part numbers and alternatives
| Part number | Relationship | |
|---|---|---|
OPTISWIRL 2100 | Basic vortex meter without integrated compensation | Quote |
OPTISWIRL 4200 R | Remote converter version for high-temperature installations | Quote |
Prowirl F 200 | Endress+Hauser two-wire vortex alternative | Quote |
Not sure which variant you need? Send us the nameplate photo or the old part number and we will identify the current equivalent.
Supply, documentation and lead time
What you receive
- Genuine KROHNE product in original packaging
- Commercial invoice and packing list; Certificate of Conformance on request
- Datasheet, declaration of conformity and country of origin as issued by the manufacturer
- Manufacturer warranty, period stated on the quotation
How we quote
- Reply within one business day with price, lead time and stock position
- Alternatives proposed when they improve price or delivery
- Incoterms of your choice: EXW Hai Phong, FOB/FCA, CIF/DAP to your site
- Consolidated shipments for multi-line orders; export documentation for buyers outside Vietnam
Indicative HS code 9026.10 — final classification is confirmed on the commercial invoice.
Frequently asked questions
Do I need separate pressure and temperature transmitters for steam?
Not with the compensated version: the OPTISWIRL 4200 integrates a Pt1000 and a pressure sensor and calculates mass flow and energy internally, so only one two-wire loop is needed.
What straight pipe lengths does a vortex meter need?
Typically 20 × DN upstream and 5 × DN downstream; less with flow conditioners. We check your piping layout before confirming the size.
Is the OPTISWIRL 4200 available from stock, and what is the lead time?
Typical factory lead time is 3–6 weeks for standard sizes. We confirm with the quotation.