7 units in stockAPI · ASME · ISO · NIST · UKAS
1 / 4Industrial vortex (Karman) flowmeter for volume flow of steam, gases and liquids. Flanged DN100 sensor with capacitive DSC element, 4-20 mA HART output, IP67 and ATEX Ex ia intrinsically safe approval.
The Endress+Hauser Proline Prowirl 72F is a vortex flowmeter for reliable volume-flow measurement of saturated and superheated steam, gases and liquids in demanding process plants. It works on the Karman vortex street principle: a bluff body placed across the flow sheds alternating vortices whose frequency is directly proportional to the mean flow velocity, and therefore to volume flow. These pressure pulsations are captured by the patented capacitive DSC (Differential Switched Capacitance) sensor. The DSC element is fully mechanically balanced, so it reacts only to the vortex signal and stays insensitive to pipe vibration up to 1 g over 10 to 500 Hz.
This particular unit is the flanged 72F body in nominal diameter DN100 (4"), pressure rating PN40, with EN 1092-1 flanges in stainless steel A351-CF3M (1.4404 / 316L). Wetted parts of the DSC sensor are stainless steel 1.4435 (316L), in compliance with NACE MR0175 and MR0103, making it suitable for sour-service and general industrial media. The compact aluminium transmitter carries a two-line local display with three keys and delivers a 4 to 20 mA signal with superimposed HART digital communication, plus a configurable pulse/status output.
The maximum measured error is below 0.75% of reading for liquids and below 1% of reading for gas and steam (Re greater than 20000), with a repeatability of +/-0.25% of reading. Standard medium temperature runs from -40 to +260 C, with a high/low-temperature sensor extending the range to -200 to +400 C. The housing is rated IP67 (NEMA 4X).
On this device the nameplate confirms an intrinsically safe version: EEx ia IIC T6 to T1 (ATEX II 2G, KEMA 02ATEX1289, IECEx KEM 06.0008), powered from 12 to 30 V DC. Because a vortex meter has no moving or wearing parts, needs no zero-point calibration and is largely independent of process pressure, temperature and density, the Prowirl 72F is a robust, low-maintenance choice for steam metering, utility and energy balancing, and chemical process lines.
| Attribute | Value |
|---|---|
| General | |
| Measuring principle | Vortex meter (Karman vortex street), capacitive DSC sensor |
| Performance & accuracy | |
| Maximum measured error (liquid) | <0.75% o.r. for Re > 20000 |
| Maximum measured error (gas/steam) | <1% o.r. for Re > 20000 and v < 75 m/s |
| Repeatability | ±0.25% o.r. (of reading) |
| Process conditions & connection | |
| This unit — line size | DN 100 (4"), PN 40, flanged EN 1092-1 (72F); family DN 15 to 300 |
| Medium temperature range | DSC standard sensor -40 to +260 C; high/low-temp sensor -200 to +400 C |
| Nominal pressure (max, Prowirl 72) | up to PN 250 / Class 1500 |
| Process connection | Flanges EN 1092-1 (DIN 2501), ANSI B16.5, JIS B2220 |
| Construction & materials | |
| Wetted materials | Measuring tube A351-CF3M (1.4404/316L); DSC sensor 1.4435 (316L), NACE MR0175/MR0103 |
| Degree of protection | IP 67 (NEMA 4X) to EN 60529 |
| Power & output | |
| Output signal | 4-20 mA with HART + pulse/status output (open collector, passive) |
| Approvals & safety | |
| Ambient temperature (compact, standard) | -40 to +70 C |
| Supply voltage (this unit, Ex i) | 12 to 30 V DC (with HART 18 to 30 V DC) |
| Hazardous-area approval (nameplate) | ATEX II 2G, EEx ia IIC T6-T1 (KEMA 02ATEX1289, IECEx KEM 06.0008) |
| Model code | Description | Measuring range |
|---|---|---|
| 72F | Prowirl 72F (flanged) ★ this unitFlanged volume-flow vortex meter for steam, gas and liquids. | DN 15 to 300 (1/2" to 12"), up to PN 250 / Class 1500 |
| 72W | Prowirl 72W (wafer)Compact flangeless wafer body clamped between pipe flanges. | DN 15 to 150 (1/2" to 6") |
| 73F | Prowirl 73F (flanged, multivariable)Flanged version with integrated Pt1000 for calculated mass/corrected volume flow. | DN 15 to 300 (1/2" to 12") |
| 73W | Prowirl 73W (wafer, multivariable)Wafer version with integrated temperature element and extended diagnostics. | DN 15 to 150 (1/2" to 6") |
All listed models can be supplied with your required certification, output protocol and process connection — contact us or request a quote for exact model-code selection.
It measures volume flow of saturated and superheated steam, gases and low-viscosity liquids using the vortex (Karman) principle. Volume flow is derived from the vortex shedding frequency behind the bluff body.
The maximum measured error is below 0.75% of reading for liquids and below 1% of reading for gas/steam (Reynolds number above 20000, velocity below 75 m/s), with a repeatability of +/-0.25% of reading, per the official Technical Information TI070D.
This unit is the flanged 72F body in DN100 (4") with a PN40 rating and EN 1092-1 stainless-steel flanges, confirmed by the flange casting. The Prowirl 72 family covers DN15 to DN300 with ratings up to PN250 / Class 1500.
Yes. The nameplate shows an intrinsically safe version: ATEX II 2G, EEx ia IIC T6 to T1, with certificates KEMA 02ATEX1289 and IECEx KEM 06.0008, powered from 12 to 30 V DC and rated IP67. It suits Zone 1 installations for gas atmospheres.
Very little. There are no moving parts, so nothing wears mechanically, and the meter needs no zero-point calibration. Correct installation with the required straight inlet/outlet runs and a fully developed flow profile is the main requirement for accurate readings.
Yes. This exact Prowirl 72F unit is physically in Barmaan's stock, and its authenticity is guaranteed. You can request a proforma invoice directly from this product page; our team will confirm availability and terms. An on-site visit to inspect the device before purchase can also be arranged.
It provides a 4 to 20 mA current output with HART communication plus a configurable pulse/status output. On this intrinsically safe unit the supply is 12 to 30 V DC (18 to 30 V DC when HART is used).
Both share the same vortex sensing body. Prowirl 72 is the volume-flow version. Prowirl 73 adds an integrated Pt1000 temperature element in the DSC paddle and extended diagnostics, enabling calculated mass flow and corrected volume flow for steam and gas without an external sensor. This listed unit is a Prowirl 72F.
7 units in stock
7 units in stock
Featured9 units in stock
FeaturedEndress+HauserFlow Meters
Featured2 units in stock
3 units in stock
3 units in stockEndress+HauserFlow Meters
Out of stockCalibration, testing and supply services for this equipment