GreenPrima PSTAB500 Multi-Parameter Electromagnetic Flow Meter

Overview

The GreenPrima PSTAB500 Multi-Parameter Electromagnetic Flow Meter is engineered for high-accuracy, continuous volumetric flow measurement of conductive liquids in demanding industrial process environments. Operating on Faraday’s Law of electromagnetic induction, the PSTAB500 generates a magnetic field perpendicular to the direction of fluid flow; as conductive media pass through this field, a voltage proportional to the average flow velocity is induced across two electrodes. This principle ensures zero pressure drop, no moving parts, and immunity to changes in fluid density, viscosity, temperature, or pressure—making it ideal for applications where mechanical wear, clogging, or calibration drift are critical concerns. Designed for permanent installation in pipelines carrying water, wastewater, acids, alkalis, slurries, and other aqueous-based process fluids, the PSTAB500 delivers metrological reliability compliant with ISO 4064-2 and IEC 60534-2-1 standards for electromagnetic flow instrumentation.

Key Features

• Multi-parameter configuration capability: Simultaneous real-time output of volumetric flow rate, totalized flow, flow velocity, conductivity status, and sensor health diagnostics via integrated signal processing.
• Modular electrode and liner selection matrix: Supports 8 electrode materials (including platinum-iridium and tantalum) and 4 lining options (PTFE, F46, neoprene, polyurethane) to ensure chemical compatibility across aggressive, abrasive, or high-temperature media.
• Robust mechanical architecture: Integral or remote-mounted variants with enclosure ratings up to IP68 for submersion-rated operation; carbon steel or 316L stainless steel housings available per ASME B16.5 flange specifications.
• Wide operating range: Validated performance from DN10 (½”) to DN2200 (86″) pipe sizes; flow velocity measurement from 0.1 m/s (low-flow stability) to 15 m/s (high-velocity turbulence tolerance).
• Embedded diagnostics and self-monitoring: Real-time validation of magnetic field strength, electrode polarization resistance, and grounding integrity—enabling predictive maintenance and reducing unscheduled downtime.

Sample Compatibility & Compliance

The PSTAB500 is validated for use with liquids exhibiting electrical conductivity ≥5 µS/cm, including potable water, seawater, pulp suspensions, chemical dosing solutions, and food-grade syrups. It is not suitable for hydrocarbons, distilled water, or non-conductive solvents. All wetted components conform to FDA 21 CFR 177.2600 (for PTFE and F46 liners) and EN 10204 3.1 material certification requirements. The device supports traceable calibration in accordance with ISO/IEC 17025-accredited laboratories and meets electromagnetic compatibility (EMC) requirements per EN 61326-1 and safety standards per EN 61010-1. Optional HART and MODBUS RTU outputs facilitate integration into DCS, SCADA, and MES platforms compliant with ISA-88 and ISA-95 frameworks.

Software & Data Management

The PSTAB500 includes embedded firmware supporting dual-mode communication: MODBUS RTU over RS485 (standard) enables seamless integration with programmable logic controllers and supervisory systems, while optional HART 7.5 protocol allows for multi-drop configuration and field device parameterization using handheld or PC-based configurators. GPRS-enabled variants support cloud-connected telemetry for remote monitoring, alarm notification, and historical trend analysis. All configuration changes, calibration events, and diagnostic logs are timestamped and stored locally with audit-trail functionality aligned with FDA 21 CFR Part 11 requirements when deployed in regulated pharmaceutical or biotech manufacturing environments. Firmware updates are performed via secure USB or RS485 interface without process interruption.

Applications

• Water and wastewater treatment: Influent/effluent metering, chemical dosing control (e.g., chlorine, coagulants), and sludge flow monitoring in primary and secondary clarifiers.
• Chemical processing: Corrosive liquid transfer in sulfuric acid, caustic soda, and nitric acid service lines—leveraging Hastelloy C or tantalum electrodes with PTFE lining.
• Food & beverage: Hygienic flow measurement of milk, beer wort, fruit concentrates, and cleaning-in-place (CIP) solutions under sanitary conditions (3-A certified variants available upon request).
• Power generation: Condensate return monitoring, cooling water circulation, and demineralized water feed control in thermal and nuclear plants.
• Mining and mineral processing: Slurry transport measurement in tailings pipelines, where polyurethane-lined variants resist abrasion from solid loadings up to 40% by volume.

FAQ

What minimum fluid conductivity is required for reliable operation?
The PSTAB500 requires a minimum electrical conductivity of 5 µS/cm. Below this threshold, signal-to-noise ratio degrades, resulting in unstable or non-linear output.
Can the PSTAB500 be installed in vertical pipelines?
Yes—provided the pipe is fully filled and the flow direction is upward (to prevent air entrapment); horizontal installation is preferred for optimal electrode wetting and long-term stability.
Is battery-powered operation supported?
No—the PSTAB500 does not offer internal battery backup; however, low-voltage DC models (11–40 VDC) are compatible with industrial UPS systems and solar-powered remote installations.
How is calibration traceability maintained?
Each unit ships with a factory calibration certificate referencing NIST-traceable master meters; field recalibration is performed using dry-calibration simulation or wet calibration against a certified reference standard per ISO 9001 procedures.
Does the device support intrinsically safe operation in hazardous areas?
Yes—ATEX/IECEx-certified variants (Ex d IIB T4 Gb / Ex tb IIIC T135°C Db) are available for Zone 1/21 applications; consult the regional sales engineering team for explosion-proof housing and cable gland specifications.