Endress+Hauser Prowirl 72F Vortex Flowmeter
Overview
The Endress+Hauser Prowirl 72F is a robust and safe vortex flowmeter designed for the universal measurement of gases, steam, and liquids, suitable for safety-instrumented applications up to SIL 2. Its patented capacitive DSC sensor delivers high-precision measured values even under the toughest process conditions, including high temperature steam service and pulsating flow.
With fast quotation turnaround and technical support, Seven Star LLC proudly supplies the Endress+Hauser Prowirl 72F to power plants, process industries, and utilities across the Sultanate of Oman and the wider GCC, backed by genuine factory calibration, full documentation, and local technical support.
Measurement Principle
The Endress+Hauser Prowirl 72F operates on the vortex shedding principle. A bluff body positioned in the flow path generates alternating vortices as fluid passes, at a frequency directly proportional to flow velocity; the patented capacitive DSC sensor detects these vortices and converts the signal into an accurate volumetric flow measurement independent of fluid density or pressure changes at a given velocity.
Because vortex shedding is a well-understood, repeatable physical phenomenon, the Prowirl 72F delivers consistent accuracy across gases, steam, and liquids from a single sensor design. The instrument has no moving parts to wear in the measuring path itself, and its high-temperature rating makes it a proven choice for steam metering where mechanical meters degrade quickly.
Engineering Design of the Endress+Hauser Prowirl 72F
The sensor is available in nominal diameters from DN 15 to DN 300 (1/2 inch to 12 inch), rated for process pressures from PN 10 to PN 250 (Class 150 to 1500, JIS 10K to 40K) and medium temperatures from –200°C to +400°C, with up to +450°C available on request for specialized high-temperature steam applications.
The transmitter features a two-line liquid crystal display with push-button operation and quick setup capability, housed to IP67 (NEMA 4X) protection. The compact version operates in ambient temperatures from –40°C to +70°C, while the remote sensor version extends to +85°C, giving flexibility for installation near hot process lines.
Key Features
The Endress+Hauser Prowirl 72F is engineered for universal, high-precision flow measurement, and the Endress+Hauser Prowirl 72F is proven across steam, gas, and liquid duty in demanding industrial plants:
- Measures gases, steam, and liquids from a single vortex sensor design with a patented capacitive DSC sensor.
- Delivers measurement accuracy better than 0.75% of reading for liquids and 1% for gas and steam.
- Handles medium temperatures from –200°C to +400°C with the high/low temperature sensor (standard sensor –40°C to +260°C), with up to +450°C available on request.
- Is rated for process pressures up to PN 250 (Class 1500, JIS 40K) for high-pressure steam and gas lines.
- Is suitable for safety-instrumented systems up to SIL 2.
- Covers nominal diameters from DN 15 to DN 300 (1/2 inch to 12 inch).
- Achieves IP67 (NEMA 4X) protection with a two-line backlit display for on-site readouts.
- Offers compact or remote transmitter mounting to suit hot or vibration-prone installation points.
Industrial Applications
The Endress+Hauser Prowirl 72F is specified for steam metering in power plants and process utilities, saturated and superheated steam custody transfer, natural gas and compressed air measurement, and general liquid flow duty where a single robust instrument must cover multiple fluid types. Its wide temperature and pressure ratings also suit refinery and petrochemical steam and gas networks.
With regional stock and engineering support in Muscat, Seven Star LLC distributes the Prowirl 72F to power generation and process facilities throughout Oman and the GCC, including projects in the Sohar and Salalah economic zones, district cooling plants, and refining and petrochemical complexes, supported by regional stock availability and factory-trained technical staff.
Technical Specifications
Key technical parameters for the Endress+Hauser Prowirl 72F are summarized below.
| Parameter | Specification |
|---|---|
| Model | Endress+Hauser Proline Prowirl 72F |
| Measuring Principle | Vortex shedding (capacitive DSC sensor) |
| Nominal Diameter | DN 15 to DN 300 (1/2″ to 12″) |
| Measurement Accuracy | Liquids: better than 0.75% of reading; gas and steam: better than 1% of reading (Reynolds number above 20,000) |
| Medium Temperature | -40 °C to +260 °C with standard sensor; -200 °C to +400 °C with high/low temperature sensor (up to +450 °C on request) |
| Max Process Pressure | PN 10–250, Class 150–1500, JIS 10–40K |
| Safety Rating | Suitable for SIL 2 applications |
| Degree of Protection | IP67 (NEMA 4X) |
| Product status (endress.com) | No longer available; successors listed: Proline Prowirl F 200, Prowirl O 200, Prowirl R 200 |
| Repeatability | ±0.25 % of reading |
| Full scale velocity (liquids) | 9 m/s |
| Outputs | 4-20 mA HART; pulse/status output (passive, galvanically isolated); vortex frequency 0.5 to 2850 Hz; PFM; PROFIBUS PA; FOUNDATION Fieldbus H1 |
| Supply voltage HART | Non-Ex 12 to 36 V DC (18 to 36 V with HART); Ex i/Ex n 12 to 30 V; Ex d 15 to 36 V |
| Supply voltage fieldbus | PA/FF: non-Ex 9 to 32 V DC; Ex i/Ex n 9 to 24 V; Ex d 9 to 32 V; 16 mA |
| Seal temperature limits | Graphite -200 to +400 °C; Viton -15 to +175 °C; Kalrez -20 to +275 °C; Gylon (PTFE) -200 to +260 °C |
| Materials | Meter body A351-CF3M (1.4408) or Alloy C-22; PN 250 / Cl. 900-1500: 316Ti (1.4571); DSC sensor wetted 316L, Inconel 718 or titanium Gr. 5 |
| Ambient temperature | Compact -40 to +70 °C (Ex d -40 to +60 °C); remote sensor -40 to +85 °C; remote transmitter -40 to +80 °C |
| Ex approvals | ATEX II 1/2G EEx ia IIC, II 2G EEx d [ia] IIC, II 3G EEx nA; FM and CSA Class I/II/III Div. 1; TIIS; NEPSI |
| Design options | R Style / S Style integrated diameter reduction by one or two line sizes; Dualsens version with two sensors and electronics |
Prowirl 72F Accuracy by Fluid, Sensor Versions and Outputs
Endress+Hauser specifies the Prowirl 72 separately for liquids and for gas or steam. In liquids the maximum measured error is below 0.75 % of reading at Reynolds numbers above 20000; for gas and steam it is below 1 % of reading under the same condition and at velocities below 75 m/s. Between Reynolds 4000 and 20000 the same percentages apply to the full scale value instead of the reading. Repeatability is ±0.25 % of reading, and the full scale velocity for liquids is 9 m/s.
The fluid temperature range depends on the DSC sensor and seal selected. The standard capacitive DSC sensor covers -40 to +260 °C; the high/low temperature sensor extends this to -200 to +400 °C. High pressure versions use an Inconel 718 sensor (PN 63 to 160, Class 600) or a titanium Grade 5 sensor (PN 250, Class 900 to 1500), the latter from -50 °C. Graphite seals cover the full range, while Viton is limited to -15 to +175 °C and Kalrez to -20 to +275 °C.
The transmitter is loop powered: 12 to 36 V DC in non-Ex service, 12 to 30 V as Ex i and 15 to 36 V as Ex d, with 18 V or 21 V minimum when HART communication is used. In addition to 4-20 mA HART, a passive pulse/status output can deliver scaled pulses, limit values, the raw vortex frequency (0.5 to 2850 Hz) or a PFM signal for an RMC621 or RMS621 flow computer. PROFIBUS PA and FOUNDATION Fieldbus versions draw 16 mA.
Prowirl 72F Product Status, Successors and Inlet Run Requirements
The Prowirl 72F belongs to the earlier Proline generation. On endress.com the manufacturer states that the product is no longer available and directs users to the new generation: Proline Prowirl F 200, Prowirl O 200 for high pressure and Prowirl R 200 with line size reduction. For plants running installed 72F meters, the functional safety statement in the Technical Information remains relevant: Prowirl 72 is rated SIL 2 to IEC 61508 / IEC 61511-1.
Vortex meters need a fully developed flow profile. The minimum inlet runs given by Endress+Hauser are 15 × DN after a reduction, 17 × DN plus 8 times the step height after an expansion, 20 × DN after a 90 degree elbow or T-piece, 25 × DN after two elbows in one plane, 40 × DN after two elbows in different planes and 50 × DN after a control valve, each with 5 × DN downstream. A perforated plate flow conditioner is offered where these lengths cannot be provided.
Why Choose Seven Star LLC for Endress+Hauser Vortex Flowmeters
A vortex meter rated for SIL 2 safety-instrumented duty has to be specified with the correct pressure class and temperature rating for genuinely demanding steam or high-pressure gas service, and a mismatch on a safety loop is a far more serious problem than on a simple indication point. Seven Star LLC works with your process safety and instrumentation engineers to confirm the Prowirl 72F’s pressure, temperature, and SIL configuration against your actual safety-instrumented system requirements, backed by our trusted Endress+Hauser suppliership across Oman and the wider GCC. We also support power generation and petrochemical facilities in Sohar and Salalah with coordinated documentation for safety-loop commissioning and with planning compact-versus-remote transmitter mounting around hot steam lines.
Prowirl 72F FAQ
What is the Endress+Hauser Prowirl 72F?
The Prowirl 72F is a vortex flowmeter for gases, steam and liquids, suitable for safety-instrumented applications up to SIL 2, with a patented capacitive DSC sensor.
What sizes and pressure classes are available?
Nominal diameters from DN 15 to DN 300 (1/2 to 12 inch) and process pressures from PN 10 to PN 250 (Class 150 to 1500, JIS 10K to 40K).
What temperature and accuracy can the Prowirl 72F achieve?
Medium temperature from −200 °C to +400 °C, up to +450 °C on request, with measurement accuracy better than 0.75% of reading for liquids and 1% for gas and steam.
Can the Prowirl 72F be used for steam measurement?
Yes. Its high-temperature rating and pressure classes make it a common choice for saturated and superheated steam, as well as gas and liquid duty.
Can the transmitter be mounted remotely?
Yes. Compact and remote versions are available. The compact version works at ambient −40 to +70 °C and the remote sensor version up to +85 °C, with IP67 (NEMA 4X) protection.
Request a Quote for Endress+Hauser Prowirl 72F Vortex Flowmeter
For steam, gas, and liquid metering points standardizing on the Endress+Hauser Prowirl 72F, Seven Star LLC is ready to support your project with a formal RFQ, technical datasheet, and delivery timeline. Regional warehouse stock and factory-trained instrumentation engineers mean faster lead times and reliable after-sales support across Oman and the GCC. Backed by genuine manufacturer documentation, contact our instrumentation division today to configure the right Prowirl 72F variant for your process, complete with genuine calibration certificates and full documentation.
Related Products
- Instruction Manual Endress+Hauser Prowirl 72F Vortex Flowmeter Manual Download
Endress+Hauser (E & H) is a global pioneer in process automation and industrial measurement technology, trusted by manufacturers and engineers worldwide for precision and innovation. Founded in 1953 in Lörrach, Germany, and led today by a Swiss-based holding company, it specializes in instruments that enable accurate monitoring and control of liquids, gases, and solids in industrial processes.
Its comprehensive portfolio includes flow, level, pressure, temperature, and analytical measurement devices as well as automation and digital connectivity solutions. Endress+Hauser products are engineered to ensure safety, efficiency, and regulatory compliance in industries such as oil & gas, chemical, water treatment, food & beverage, and energy.
Seven Star LLC supplies authentic Endress+Hauser equipment across the Middle East, helping industrial clients achieve accurate process control and optimized operations with proven measurement engineering and local technical support.
About Endress+Hauser: Company and Product Range
Endress+Hauser was founded on 1 February 1953 in Lörrach, Germany, by Georg H Endress and Ludwig Hauser; the Endress+Hauser name was adopted in 1957. The group is led today by the holding company Endress+Hauser AG in Switzerland and remains family-owned. It reports more than 18,000 employees, net sales of more than 4.0 billion euros, presence in 125 countries and production at more than 40 sites in 11 countries.
The portfolio comprises around 1,200 product families. Flow measurement includes Proline Promag electromagnetic, Promass Coriolis and Prowirl vortex flowmeters, Prosonic Flow ultrasonic and t-mass thermal meters. Level instruments include Micropilot radar, Levelflex guided radar and Liquiphant point level switches; pressure is covered by Cerabar and Deltabar transmitters. Temperature products are grouped under iTHERM and iTEMP, and liquid analysis is based on Liquiline transmitters and Memosens digital sensors.
Click to view complete Endress+Hauser (E & H) information.
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