ABB FEV121.100.V1.S.1.S2.B.1.A.1.A.3.A.1.A.1 WaterMaster Electromagnetic Flowmeter DN100

The ABB FEV121.100.V1.S.1.S2.B.1.A.1.A.3.A.1.A.1 is a configured WaterMaster electromagnetic flowmeter designed for accurate and stable measurement of conductive liquids in industrial water and wastewater applications. The FEV121 series uses a remote-mount arrangement, separating the measuring sensor from the transmitter and allowing the electronics to be installed at a more convenient operating location.

This specific configuration is based on a DN100 optimized full-bore sensor. Its order code identifies the selected bore diameter, liner, electrode material, grounding arrangement, process connection, calibration class, signal cable, power supply and output configuration. This makes the complete designation useful when identifying the correct instrument for an existing measurement installation.

Product Identification

FEV121 WaterMaster Measurement Technology

The ABB WaterMaster platform is an electromagnetic flow measurement system intended for conductive liquids. Electromagnetic measurement determines flow without introducing moving mechanical components into the liquid path. This operating principle makes the technology suitable for water distribution, wastewater handling, sewage systems and other process applications where dependable liquid flow measurement is required.

The FEV121 is the remote-mount version of the optimized full-bore WaterMaster sensor. In a remote installation, the sensor is installed directly into the process pipeline while the transmitter is positioned separately. This arrangement can be useful when the measurement point is located in a pit, chamber or another location where direct access to the transmitter would be inconvenient.

The WaterMaster sensor design is also intended to reduce sensitivity to flow-profile disturbances. The optimized full-bore construction provides a continuous internal measurement passage, allowing the instrument to be integrated into pipelines used for water and wastewater transportation.

DN100 Sensor Configuration

The 100 designation in the order code identifies the DN100 bore size. DN100 corresponds to a nominal 100 mm pipeline size and is commonly used in water treatment, pumping stations, utility networks and industrial fluid handling systems.

The V1 portion of the configuration identifies the polypropylene liner. Liner selection is important because the material forms the internal interface between the process fluid and the measuring system. For the WaterMaster optimized full-bore FEV121 range, polypropylene is specified for applicable sensor sizes including DN100.

The S code identifies stainless steel 316Ti measuring electrodes. Electrode material is an important part of electromagnetic flow measurement because the electrodes directly detect the electrical signal generated by the conductive fluid passing through the magnetic field.

Process Connection and Mechanical Integration

This configuration uses ISO 7005 PN16 process flanges with carbon steel flange material. The flange connection provides a defined mechanical interface between the flowmeter sensor and the pipeline. When installing the instrument, the nominal diameter, flange standard, pressure class, gasket arrangement and pipeline alignment should be checked against the project piping specification.

Correct mechanical alignment is important for any inline flowmeter. The sensor should be installed so that the process connection is properly supported and the measuring tube remains free from unnecessary mechanical stress. The pipeline should also be arranged to maintain the appropriate operating conditions specified for electromagnetic flow measurement.

Remote Installation and Signal Cable

One of the defining characteristics of the FEV121 is its remote-mount configuration. The sensor and transmitter are installed separately and connected through the designated signal cable. The order code for this particular instrument specifies a 20 m signal cable.

Remote mounting provides flexibility when the pipe is located underground, inside a measurement chamber or in an area where the transmitter display and controls need to be positioned away from the sensor. The separation between the sensor and transmitter should be considered during installation planning so that the cable route is suitable for the application environment.

Cable installation should follow the applicable WaterMaster installation requirements. Proper routing, termination and electrical separation help maintain the quality of the low-level measurement signal and reduce the possibility of interference from other electrical equipment.

Power Supply and Signal Outputs

The specified power-supply configuration for this order code is 100–230 V AC at 50 Hz. This provides compatibility with common industrial AC supply arrangements. The actual supply wiring should always be checked against the equipment documentation and the electrical design of the installation before commissioning.

The FEV121 configuration also provides HART communication together with a 20 mA signal, pulse output and contact output. These interfaces allow the flowmeter to exchange measurement and diagnostic information with process control, monitoring and instrumentation systems.

The 20 mA interface can be integrated into conventional process-control systems, while pulse functionality can be used for flow-related counting applications. Contact outputs can be assigned according to the supported instrument functions and control requirements. HART communication provides an additional channel for parameter access and instrument information.

Measurement Accuracy and Diagnostics

The selected calibration code A represents the standard accuracy configuration of the WaterMaster optimized full-bore sensor. The WaterMaster family is designed for bidirectional electromagnetic flow measurement, allowing flow information to be processed for both forward and reverse flow conditions.

WaterMaster also incorporates diagnostic functions intended to assist operators in identifying abnormal instrument conditions. Diagnostic information can be used during commissioning, routine inspection and troubleshooting. The transmitter architecture supports parameter access and instrument-status information without requiring the sensor itself to be removed from the pipeline.

For maintenance work, technicians should distinguish between a process-side problem and an instrumentation-side problem. Incorrect grounding, unsuitable installation conditions, cable problems, electrode contamination, process conductivity and transmitter configuration can all affect electromagnetic measurement behavior.

Typical Industrial Applications

The ABB FEV121 WaterMaster platform is particularly suited to water and wastewater measurement. Typical installation environments include municipal water distribution, wastewater treatment facilities, sewage pumping systems, industrial water networks and process-liquid monitoring.

The DN100 configuration can be integrated into medium-size pipeline systems where a remote transmitter arrangement is advantageous. The electromagnetic measuring principle is appropriate for conductive liquids and avoids the mechanical wear mechanisms associated with moving flowmeter components.

In a water-treatment installation, the sensor may be installed in a pipeline while the transmitter is mounted in an accessible control area. This arrangement allows operators to monitor flow information while keeping the measurement sensor at the actual process location.

Order Code Configuration Summary

The complete designation FEV121.100.V1.S.1.S2.B.1.A.1.A.3.A.1.A.1 contains multiple configuration fields rather than representing a simple base model number. The first section identifies the FEV121 remote-mount WaterMaster sensor, while the following codes define the sensor diameter and construction.

• FEV121 – optimized full-bore remote-mount electromagnetic flowmeter.
• 100 – DN100 bore diameter.
• V1 – polypropylene liner configuration.
• S – stainless steel 316Ti measuring electrodes.
• 1 – standard electrode design.
• S2 – ISO 7005 PN16 process connection.
• B – carbon steel process flanges.
• 1 – standard usage certification configuration.
• A – standard accuracy calibration.
• 1 – standard temperature-range configuration.
• A – English documentation language.
• 3 – 20 m signal cable.
• A – general-purpose, non-Ex design.
• 1 – IP67 transmitter and IP68 sensor configuration with cable not fitted and not potted.
• A – M20 × 1.5 cable conduit.
• 1 – 100–230 V AC, 50 Hz power supply.
• A – HART, 20 mA, pulse and contact output configuration.
• 1 – factory-default configuration with standard diagnostics.

Identification and Replacement Considerations

When identifying an ABB WaterMaster flowmeter for replacement or system documentation, the complete order code should be recorded rather than relying only on the FEV121 model designation. Multiple FEV121 variants can have different bore sizes, liners, electrode materials, process connections, cable lengths, power supplies and communication configurations.

For this reason, the complete code ABB FEV121.100.V1.S.1.S2.B.1.A.1.A.3.A.1.A.1 should be treated as the primary configuration reference. Before substituting another flowmeter, the complete order code, pipeline diameter, process connection, electrical supply, signal interface, cable arrangement and transmitter compatibility should be compared.

Technical Summary

The ABB FEV121.100.V1.S.1.S2.B.1.A.1.A.3.A.1.A.1 is a DN100 WaterMaster optimized full-bore electromagnetic flowmeter configured for remote installation. Its specification combines a polypropylene liner, 316Ti stainless steel measuring electrodes, standard grounding, ISO 7005 PN16 carbon steel flanges and standard-accuracy calibration.

The configuration further specifies a 20 m signal cable, 100–230 V AC 50 Hz power supply and HART, 20 mA, pulse and contact output functions. These characteristics make the instrument suitable for integration into water, wastewater and industrial liquid measurement systems where remote transmitter installation and electromagnetic flow measurement are required.