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Product Overview

The Foxboro FBM206 (Part Number: P0916GQ) functions as a high-precision pulse acquisition interface for the I/A Series Distributed Control System (DCS). It interfaces directly with pulse-generating field devices—including turbine meters, vortex meters, magnetic pickups, and contact sensors—to provide mission-critical data for custody transfer and batching operations. This module captures high-frequency signals up to 25 kHz across eight independent channels. We supply this unit as 100% Brand New original factory stock, ensuring the measurement integrity required for high-stakes oil & gas and chemical processing applications.

Technical Specifications

Item Specification
Model / Part Number FBM206 / P0916GQ
Input Channels 8 Fully Isolated Pulse Inputs
Frequency Range 10 Hz to 25 kHz
Pulse Rate Accuracy ±0.01% of reading
Input Voltage Range 7–27 V DC (Configurable)
Input Impedance 10 kΩ
Isolation Channel-to-channel and ground galvanic isolation
Communication Redundant 2 Mbps Foxboro Fieldbus
Operating Temp –20 °C to +70 °C
Compliance Voltage 22.8 V DC
Environmental Rating ISA Class G3 (Corrosive environments)
Dimensions 102 × 45 × 104 mm

Engineering Advantages

  • Totalized Flow Accuracy: The FBM206 performs local totalization and scaling onboard the module. This local processing ensures that the system never misses a pulse during high-speed (25 kHz) operations, providing the ±0.01% accuracy required for pipeline custody transfer.

  • Onboard Continuity: By calculating totals locally, the module maintains measurement continuity even during temporary communication interruptions with the main controller. Once communication restores, the module updates the DCS with the accumulated totals.

  • Exceptional Noise Immunity: High-speed pulse signals often suffer from industrial electrical noise. The FBM206 utilizes per-channel galvanic isolation to prevent ground loops and shield the system backplane from field-side transients, ensuring clean signal detection from magnetic pickups.

  • Extended Field Cabling: The module provides a 22.8 V DC compliance voltage. This high-output level allows for longer field wiring distances between the flow meter and the control cabinet by compensating for voltage drops across the wire resistance.

  • Hot-Swappable Maintenance: The module seats onto a modular baseplate, allowing for live replacement. Maintenance teams can swap the module without disconnecting field wiring or shutting down the entire I/O rack, maximizing plant uptime.

FAQs

  • What is the frequency limit for the FBM206 P0916GQ?

    The module accurately processes pulse rates from 10 Hz up to 25 kHz per channel. At these speeds, the module ensures zero missing pulses, which is vital for high-resolution flow meters.

  • Can I use this module for magnetic pickup sensors?

    Yes. The FBM206 interfaces seamlessly with magnetic pickups, turbine meters, and open collector switches. You can configure the input voltage thresholds to match the specific field device signal.

  • Does the FBM206 support redundancy?

    While the FBM206 itself is a high-reliability single module, it connects to the redundant 2 Mbps Foxboro fieldbus, ensuring that the data path to the control processor remains available at all times.

  • What is the difference between FBM206 and FBM206b?

    The standard FBM206 (P0916GQ) provides 8 independent pulse input channels, whereas the FBM206b version typically offers 4 channels. The P0916GQ is the preferred choice for high-density applications requiring maximum rack efficiency.

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