E&H 7R2C vortex flowmeter

Comprehensive Technical Guide: Endress+Hauser Proline Prowirl R 200 (7R2C) Reduced-Bore Vortex Flowmeter

In the specialized field of industrial flow measurement, managing low-flow conditions in larger pipelines presents a unique challenge. The Endress+Hauser Proline Prowirl R 200 is the engineered response, a reduced-bore (缩径型) vortex flowmeter designed to master low-flow energy management without the need for costly pipe reducers. As a specialized technical supplier, ST-YUKE CO., LIMITED offers the complete range of the E&H 7R2C vortex flowmeter series, providing unparalleled accuracy and reliability for steam, gases, and liquids in applications where flow velocities are typically low.

This guide provides an exhaustive technical analysis of the 7R2C series, detailing its unique reduced-bore models, extensive specifications, and ordering logic. This information is critical for engineers tasked with optimizing energy measurement in existing infrastructure.

![E+H Prowirl R 200 7R2C Series Representation]

1. Product Overview: The Prowirl R 200 (7R2C) Advantage

The E+H Proline Prowirl R 200 (Order code family: 7R2C) is a multivariable vortex flowmeter with a unique distinction: it features an integrated diameter reduction of one or two line sizes -1-2. This ingenious design allows it to be installed in larger pipes (up to DN 250 / 10″) while presenting a smaller flow profile to the sensor. This ensures that even during low-flow conditions, the velocity across the bluff body is high enough to maintain accurate and stable vortex shedding -3-8.

It is the particularly dependable solution for energy management, combining Heartbeat Technology for continuous, non-invasive verification with integrated temperature (DSC sensor) and the flexibility to add pressure measurement -1-2. This loop-powered, two-wire device allows for direct mass or energy flow calculation of saturated and superheated steam, making it indispensable for precise plant balancing and efficiency monitoring.

Key Technical Differentiators:

Integrated Pipe Reduction: Eliminates the need for separate reducers and expanders, saving installation costs and space -2-4.

Optimized for Low Flows: Maintains exceptional accuracy even with Reynolds numbers as low as Re 10,000, ideal for energy management in large pipes -2-3.

Dual Sensor Technology (DSC): Provides integrated temperature measurement for direct saturated steam mass/energy flow.

PremiumCal Option: Ensures best-in-class accuracy for maximum plant availability and fiscal measurement confidence -1-2.

Flexible Pressure Cell Positioning: Allows for optimal placement of an external pressure transmitter for compensated flow applications -1-2.

2. The 7R2C Series: A Model for Every Reduced-Bore Application

The E&H 7R2C vortex flowmeter series is segmented into 14 primary model designators based on the mating pipe size and the degree of reduction. The naming convention clearly indicates the meter’s connection size and the corresponding reduced internal diameter. Below is the complete list of base models available through ST-YUKE CO., LIMITED:

R-Series (Single Reduction: Connection Size > Internal Diameter)

7R2CRF (Mating Pipe DN 25 / 1″ >> Internal DN 15 / ½”) -3

7R2CRG (Mating Pipe DN 40 / 1½” >> Internal DN 25 / 1″) -3

7R2CRJ (Mating Pipe DN 50 / 2″ >> Internal DN 40 / 1½”) -3

7R2CRK (Mating Pipe DN 80 / 3″ >> Internal DN 50 / 2″) -3

7R2CRM (Mating Pipe DN 100 / 4″ >> Internal DN 80 / 3″) -3

7R2CRN (Mating Pipe DN 150 / 6″ >> Internal DN 100 / 4″) -3

7R2CRR (Mating Pipe DN 200 / 8″ >> Internal DN 150 / 6″) -3

S-Series (Double Reduction: Connection Size >> Smaller Internal Diameter)

7R2CSF (Mating Pipe DN 40 / 1½” >> Internal DN 15 / ½”) -3

7R2CSG (Mating Pipe DN 50 / 2″ >> Internal DN 25 / 1″) -3

7R2CSJ (Mating Pipe DN 80 / 3″ >> Internal DN 40 / 1½”) -3

7R2CSK (Mating Pipe DN 100 / 4″ >> Internal DN 50 / 2″) -3

7R2CSM (Mating Pipe DN 150 / 6″ >> Internal DN 80 / 3″) -3

7R2CSN (Mating Pipe DN 200 / 8″ >> Internal DN 100 / 4″) -3

7R2CSR (Mating Pipe DN 250 / 10″ >> Internal DN 150 / 6″) -3

Note: The “RF” to “RR” models offer single-step reductions, while “SF” to “SR” models offer a more aggressive two-step reduction for very low flow rates in large pipes.

3. Deep Dive: Decoding the 7R2C15-AAAABAABAAAASKA1+AA

Understanding the Endress+Hauser ordering code is critical for ensuring the device meets specific process conditions. While the example code 7R2C15-AAAABAABAAAASKA1+AA uses a base model number typically associated with a standard DN15 device, for the purpose of understanding the structure, we will apply the logic to a typical R-Series configuration. ST-YUKE CO., LIMITED provides expert configuration assistance to navigate these complex strings.

Using the standard Endress+Hauser configuration structure, we can dissect a representative code like 7R2CRN-CBACJCDDAADAASKA1 -1-7:

7R2CRN: The Base Model. This indicates the sensor is a Prowirl R 200 designed to fit a DN 150 (6″) mating pipe with a single reduction to an internal diameter of DN 100 (4″) -3.

C: Approval: ATEX/IECEx Ex ia (intrinsically safe) for hazardous areas.

B: Output: 4-20mA HART with pulse/frequency/switch output.

A: Display & Operation: SD02 4-line backlit display with push buttons.

C: Housing: GT20 dual-chamber, compact, stainless steel.

J: Electrical Connection: Likely threaded connection NPT ½”.

C: Sensor Version: Extended sensor option (e.g., for high temperatures).

D: Measuring Tube Material: Alloy C22, for high corrosion resistance.

D: Pressure Sensor Range: Prepared for external pressure sensor.

A: Process Connection: EN1092-1 (PN40) flange (mating pipe connection).

A: Calibration: 0.75% volume 3-point calibration.

D: Language: German.

A: Sensor Option: Without.

A: Application Package: Standard.

S: Additional Test/Certificate: Material certificate (e.g., 3.1).

K: Service: Standard.

A: Firmware: Factory firmware version.

1: Output Option: Without.

Interpretation:
This specific 7R2CRN configuration represents a highly robust, corrosion-resistant device for hazardous area steam or gas applications in a DN150 line. It includes Heartbeat Technology, a stainless steel housing for maximum durability, and is prepared for full pressure compensation. ST-YUKE CO., LIMITED can supply and configure this exact variant or any other from the 14-model lineup.

4. Technical Specifications & Performance Data

For engineers evaluating the E&H 7R2C vortex flowmeter for critical energy management, precision and range are paramount. Below are the consolidated technical specifications -2-5:

Measurement Performance

Operating Conditions

Physical & Mechanical

Communication & Power

5. Why Source Your 7R2C from ST-YUKE CO., LIMITED?

Selecting the correct E&H 7R2C vortex flowmeter—whether it’s a 7R2CSK for a DN100 line with very low flow or a 7R2CRG for a DN40 steam line—requires a deep understanding of both your process and the product’s configuration logic.

ST-YUKE CO., LIMITED offers:

Technical Configuration Expertise: We help decode complex order strings like 7R2CRR-xxxxxxxxxxxxx or 7R2CSN-xxxxxxxxxxxxx to ensure correct material selection, hazardous area approvals, and output protocols.

Full-Range Availability: From the compact 7R2CRF to the large-diameter 7R2CSR, we provide optimized sourcing and competitive pricing for the entire 14-model series.

Application Support: Our team specializes in energy management applications and can recommend the ideal reduction (single or double) for your specific flow rates and pipe sizes.