GreenPrima PS TAB500 Electromagnetic Flow Meter

Overview

The GreenPrima PS TAB500 Electromagnetic Flow Meter is a high-performance, ISO/IEC 17025-aligned online flow measurement instrument engineered for continuous volumetric flow monitoring of conductive liquids in industrial process control environments. Operating on Faraday’s Law of Electromagnetic Induction, the device generates a magnetic field perpendicular to the flow direction; as conductive fluid passes through this field, it induces a voltage proportional to the average flow velocity. This principle ensures measurement independence from fluid density, viscosity, temperature, pressure, and conductivity fluctuations—provided the minimum conductivity threshold (≥5 µS/cm) is met. Designed for demanding applications across chemical processing, water/wastewater treatment, pulp & paper, mining, and pharmaceutical manufacturing, the PS TAB500 delivers stable, zero-drift performance with no moving parts in the flow path, eliminating mechanical wear, pressure loss, and sensitivity to particulate-laden or abrasive media.

Key Features

• Fully configurable sensor design supporting nominal pipe sizes from DN10 to DN2200, enabling scalability across micro-dosing lines and large-diameter municipal pipelines.
• Electrode material options include 316L stainless steel, Hastelloy B/C, titanium (Ti), tantalum (Ta), platinum-iridium (Pt-Ir), and nickel (Ni)—selected based on corrosion resistance requirements for aggressive media such as concentrated sulfuric acid, sodium hydroxide, or chlorinated brines.
• Linings compatible with PTFE (F4), FEP (F46), chloroprene rubber, polyurethane, and ceramic—each certified per ASTM D2990 and ISO 10350 for long-term chemical stability and abrasion resistance.
• Integrated self-diagnostic system continuously monitors excitation coil integrity, electrode polarization, signal-to-noise ratio, and empty-pipe detection—logging fault codes compliant with IEC 61508 SIL2 functional safety guidelines.
• Dual-directional flow measurement capability with bidirectional pulse output and signed 4–20 mA analog signal, supporting energy recovery loops and reverse-flow verification in batch processes.
• IP67/IP68-rated housing (per EN 60529) with optional explosion-proof certification (ATEX II 2G Ex d IIB T4 Gb / IECEx Ex d IIB T4 Gb) for hazardous area installations.
• Low straight-run requirement: only 5D upstream and 2D downstream (D = pipe diameter), minimizing installation footprint in retrofit applications.

Sample Compatibility & Compliance

The PS TAB500 is validated for use with homogeneous conductive liquids—including strong acids (e.g., H₂SO₄, HCl), caustics (e.g., NaOH, KOH), slurries (e.g., limestone, iron ore, fly ash suspensions), and pulp suspensions—with solids content up to 40% by volume. It complies with EN 14154-2 for water metering accuracy class B, meets electromagnetic compatibility standards per EN 61326-1 (industrial environment), and supports traceability under ISO/IEC 17025 via factory calibration certificates (including as-found/as-left data). Optional configuration enables compliance with FDA 21 CFR Part 11 for electronic records and signatures when integrated with validated SCADA systems.

Software & Data Management

The device supports native Modbus RTU/ASCII over RS485 (standard), with optional HART 7.5 (4–20 mA superimposed) and RS232 interfaces for local configuration and diagnostics. Firmware includes built-in data logging (up to 32,000 timestamped events), configurable alarm thresholds (flow rate, empty pipe, electrode fault), and audit trail functionality aligned with GLP/GMP documentation requirements. Configuration and firmware updates are performed via GreenPrima’s PC-based FlowConfig Suite v4.2—validated for Windows 10/11 and compliant with NIST SP 800-53 controls for secure software deployment.

Applications

• Continuous dosing control of coagulants and flocculants in potable water treatment plants (meeting ANSI/AWWA C702 requirements).
• Real-time slurry flow monitoring in mineral processing circuits, including cyclone feed and tailings transport lines.
• Batch accountability in API synthesis where solvent recovery loops require bidirectional mass balance reconciliation.
• Effluent discharge monitoring for environmental compliance reporting (e.g., EPA Method 160.1, ISO 5667-14).
• In-line verification of CIP (Clean-in-Place) solution flow velocity and volume in hygienic food & beverage production.

FAQ

What is the minimum required fluid conductivity for reliable operation?
The PS TAB500 requires a minimum conductivity of 5 µS/cm. Below this threshold, signal-to-noise ratio degrades significantly; validation testing with low-conductivity solvents (e.g., deionized water, ethanol) is not recommended.
Can the flow meter be calibrated in-situ without removing it from the pipeline?
Yes—zero calibration can be performed with an empty pipe using the “Air Zero” function. Wet calibration requires traceable master meters or portable ultrasonic calibrators per ISO 4185; full recalibration is performed at GreenPrima’s UK-accredited calibration lab.
Is the device suitable for steam-saturated or high-vibration environments?
The PS TAB500 is rated for ambient temperatures up to +65°C and process temperatures up to +250°C (with high-temp PTFE or ceramic lining); however, direct exposure to saturated steam or sustained mechanical vibration >2 g RMS is not supported without external isolation mounts.
Does the flow meter support intrinsically safe operation in Zone 1 hazardous areas?
The standard PS TAB500 is not intrinsically safe; however, the PS TAB500-IS variant (with galvanically isolated outputs and certified barriers) meets IEC 60079-11 for Zone 1/21 applications.
How is firmware updated, and is version history maintained?
Firmware updates are delivered via encrypted .bin files through FlowConfig Suite, with automatic backup of prior versions and SHA-256 hash verification. All update logs—including timestamp, operator ID, and checksum—are retained in non-volatile memory for audit purposes.