Category Navigation: Electromagnetic Flowmeter > Proline Promag W 400
Proline Promag W 400 Electromagnetic Flowmeter: High-Accuracy Liquid Measurement for Municipal Water Networks and Submerged Pipelines
The Endress+Hauser Proline Promag W 400 is an industrial-grade Electromagnetic Flowmeter engineered specifically for volumetric and mass tracking of conductive process liquids within municipal water infrastructure and industrial effluent lines. Acting as a highly adaptable inline sensor, this magnetic fluid monitoring solution serves primary distribution networks, remote wastewater stations, and legal-for-trade billing nodes. Operating on the Faraday induction principle, the meter features an advanced IP68-rated physical architecture, allowing for permanent underground burial or continuous underwater deployment in flood-prone utility chambers. Its specialized internal design enables precise fluid logging without layout constraints, making it the premier choice for space-restricted modern pipeline grids.
Core Engineering Parameters & Process Specifications
The following technical dataset defines the operational boundaries, certified precision levels, configurations, and communication mechanisms of the Promag W 400 industrial inline metering platform:
| Technical Feature |
Certified Operational Data & Material Specs |
| Monitored Variables |
Volume flow, Electrical Conductivity, and Mass flow |
| Available Nominal Diameters |
DN 25 up to DN 3000 (Equivalent to 1" through 120" pipe sizes) |
| Maximum Fluid Tracking Error |
Standard Calibration: ±0.5% of the actual value / Optional Flat Spec: ±0.2% |
| Environmental Protection Rating |
IP68 (Type 6P enclosure) suited for permanent underwater or underground placement |
| Legal Billing Approvals |
Optional Custody Transfer compliance via MI-001 and OIML R49 certifications |
| Corrosion Protection Standard |
EN ISO 12944 compliant housing (Optional heavy-duty C5-M coating) |
| Integrated Digital Features |
Built-in Web Server, local WLAN interface, and historical Data Logger |
Sourcing Alternative: For processes directly tracking non-conductive mediums, extreme gases, or superheated steam loops where standard magnetic meters cannot function, switching layout designs to a heavy-duty
Vortex Flowmeter is highly advised. Alternatively, if your system requires immediate, external non-contact auditing on live operational grids without physical pipeline modification, explore our specialized
Ultrasonic Flow Meter portfolio to completely prevent fluid downtime. For extreme mass-based precision tracking, check our ultra-high-end
Coriolis Flowmeter systems.
Target Industrial Sectors and Process Media Compatibility
The physical resilience and international regulatory profile of the Promag W 400 make it highly suited for specialized target environments:
- Municipal Supply Networks: Ideal for raw water sourcing, main distribution grids, and high-volume custody transfer utility billing nodes.
- Wastewater Treatment Infrastructures: Capable of managing raw sewage discharge, industrial effluent, and corrosive chemical treatment lines.
- Submerged & Buried Utility Sites: Specially optimized for unventilated underground pits, live floodplains, and permanently submerged pipelines.
- Compatible Flow Media: Designed exclusively for conductive process liquids, including municipal drinking water, variable-pH industrial waste fluid, and untreated surface water.
Critical Engineering Advantages & Plant Performance Drivers
Restrictive Layouts Solved via 0 x DN Zero-Pipe-Run Design
Traditional electromagnetic sensors require extensive straight sections of undisturbed piping before and after the installation point to mitigate fluid turbulence. The Promag W 400 offers a unique 0 x DN full-bore mechanical configuration that completely eliminates these straight inlet and outlet requirements. Systems engineers can bolt the sensor immediately downstream of sharp pipe elbows, T-pieces, or high-output pumps without losing measurement precision, allowing for extremely compact retrofitting in tight valve chambers.
Rugged Submersible Enclosure for Environmental Hazards
Material integrity is vital in subgrade installations. Boasting an IP68 (Type 6P) ingress rating and optional EN ISO 12944 C5-M level corrosion shielding, the transmitter and sensor housing can withstand long-term immersion or direct burial in saturated soils. This completely removes the risk of water ingress or external structural failure due to seasonal flooding.
Certified Custody Transfer and Revenue Protection
For commercial water utilities where flow data dictates billing, the Promag W 400 offers optional OIML R49 and MI-001 Class I approvals combined with 0 x DN technology. An integrated onboard historical data logger acts as a tamper-proof digital ledger, continuously recording measured values to provide complete data transparency for revenue protection.
Wireless Maintenance via Integrated Web Server
Field technicians no longer need to connect proprietary software or physically open the dual-compartment transmitter enclosure during bad weather. The device features a secure, built-in WLAN interface and web server, allowing for comprehensive diagnostic monitoring, parameter adjustments, and troubleshooting directly from a standard laptop or mobile device in the field.
In vast infrastructure automation networks, isolated inline fluid metering only addresses part of your systemic balancing. Preventing hazardous line pressure spikes, fluid hammer damages, or open-reservoir depletion demands that real-time flow data continuously synchronize with heavy-duty Pressure Transmitters and precise industrial-grade Level Meters to engineer a unified, failsafe command framework.
Field Implementation: Flood-Prone Subgrade Revenue Metering
Operational Challenges
A regional utility provider faced significant billing inaccuracies at low fluid velocities when using an aging mechanical billing meter. To make matters worse, the installation site was located inside a deep, unventilated concrete pit subject to recurring seasonal flooding, which regularly ruined standard electrical equipment.
Implemented Solution
We provided the specialized Promag W 400 Remote IP68 version featuring legal-for-trade OIML R49 certification, allowing the electronics to be isolated while the sensor remained in the harsh environment.
Measurable Project Results
- Sustained Accuracy: The municipal network immediately improved its billing accuracy by 8% due to precise tracking across all velocity ranges.
- Submerged Resilience: The IP68-certified sensor maintained seamless, error-free operation even after a major seasonal weather event left the entire pit completely submerged underwater for two consecutive weeks.
Endress+Hauser Promag W 400 Flowmeter - People Also Ask (FAQs)
Q1: Can the Promag W 400 flowmeter be buried directly in soil without a concrete vault?
Yes. When ordered with the certified IP68 (Type 6P) enclosure and optional EN ISO 12944 C5-M corrosion protection coating, the Promag W 400 sensor is specifically engineered for permanent direct burial or constant underwater submersion, eliminating expensive chamber construction costs.
Q2: Does the 0 x DN full-bore design of the Promag W 400 cause any pressure drop in the water main?
No. Unlike mechanical meters or constricted-bore meters, the Promag W 400 0 x DN configuration features a full-bore mechanical profile with zero restriction. It provides completely unobstructed fluid passage, ensuring no energy loss or pressure drops across the pipeline.
Q3: How does the Promag W 400 handle custody transfer billing at low flow rates?
The device features optional MI-001 and OIML R49 Class I legal-for-trade certifications. Combined with its advanced electromagnetic sensor sensitivity, it maintains high-precision verification even during low-velocity off-peak hours, protecting municipal water utility revenue from unmetered losses.
Q4: Can technicians pull data from a submerged Promag W 400 transmitter without physical contact?
Yes. Via its integrated secure WLAN interface and local web server, field engineers can perform wireless diagnostics, adjust configuration parameters, and extract historical logs from a distance using any standard laptop or smartphone without exposing the housing components.
Q5: What is the accuracy difference between standard calibration and the flat specification on the Promag W 400?
The standard factory calibration delivers an accuracy threshold of ±0.5% of the actual measured fluid volume. For critical custody transfer networks or high-precision industrial utility processes, an optional premium Flat Specification calibration is available to tighten the error margin to ±0.2%.
Q6: Is the Promag W 400 capable of measuring non-conductive water like demineralized or pure RO water?
No, because the Promag W 400 operates strictly on Faraday's law of induction, it requires a minimum fluid electrical conductivity to measure flow. For ultra-pure, non-conductive water, steam, or gas processes, alternative technologies such as vortex or ultrasonic meters must be deployed.
Q7: What functions does the built-in data logger in the Promag W 400 perform during a power outage?
The integrated hardware data logger continuously tracks volumetric totals, operational error states, and multi-variable diagnostic parameters. It serves as a tamper-proof digital record, ensuring historical data integrity and billing transparency remain fully traceable during routine maintenance or grid interruptions.
Q8: What liner options are available for the Promag W 400 when handling abrasive municipal sewage solids?
To combat the mechanical friction of sand, grit, and sludge particles typical in wastewater systems, the internal pipeline flow tube can be configured with heavy-duty, abrasion-resistant elastomer liners such as Polyurethane or Hard Rubber compounds to ensure long-term physical lifespan.
