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MCG 2350

Average Temperature Converter

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MCG 2350

Terminal operators, custody transfer officers, automation engineers, and EPC specifiers require accurate product temperature averaging to support inventory management and regulatory compliance.

The MCG 2350 Average Temperature Converter is a dedicated, microprocessor-based solution engineered specifically for storage tank environments.

By multiplexing inputs from an average temperature probe containing up to 14 RTD elements, the MCG 2350 calculates a true representative average temperature. This eliminates measurement errors caused by temperature stratification and enables accurate corrected-volume and mass calculations.

The device includes a built-in intrinsic safety barrier, allowing direct connection to both explosion-proof and intrinsically safe probes without requiring external barriers.

Unlike single-point temperature devices or generic transmitters, the MCG 2350 provides:

  • Custody-grade temperature accuracy
  • High-resolution digital processing
  • Seamless integration with L&J radar, servo, and encoder gauges

With UL, C-UL, and ATEX/CENELEC approvals, the converter supports globally compliant operation while delivering the precision and reliability required for audit-ready custody transfer and automated tank-farm measurement systems.

MCG 2350
MCG 2350 Average Temperature Converter
MCG 2350

Features

Custody-Grade Accuracy

Reduces temperature-related volume errors by digitally averaging multiple RTD inputs, ensuring compliant corrected-volume calculations for billing and reporting.

True Multi-Point Averaging

Processes up to fourteen RTD elements to eliminate stratification bias, producing a representative product temperature across the full vertical column.

Seamless Gauge Integration

Connects directly to L&J radar, servo, and encoder gauges, enabling a unified custody-transfer measurement architecture with minimal configuration effort.

Robust Digital Communication

Supports analog and multiple digital protocols for easy incorporation into SCADA, DCS, and tank farm management systems.

Intrinsic Safety Capability

Built-in IS barrier allows safe connection to explosion-proof or intrinsically safe probes, simplifying hazardous-area installations.

Regulatory Compliance

Meets API, ISO, and OIML requirements for custody transfer, ensuring measurement integrity during audits and global regulatory reviews.

Applications

  • Custody Transfer Tanks: Reduces temperature-driven errors by providing a true average across multiple RTDs, ensuring audit-ready corrected volumes for buyer and seller accuracy.
  • Petroleum Storage Terminals: Corrects stratification-driven temperature variations in large tanks, improving inventory accuracy and reducing reconciliation disputes.
  • Chemical Storage Systems: Provides precise averaged temperature for sensitive or reactive liquids, helping operators maintain compliance with strict product specifications.
  • Automated Tank Farms: Supplies standardized analog and digital outputs that simplify system integration and enable fully automated temperature-based corrections.
  • Refined Product Operations: Delivers accurate averaging required for quality assurance, product balancing, and custody transfer across multi-layered fuel storage.
  • High-Accuracy Facilities: Supports operations requiring precise thermal data for mass calculations, density adjustments, and detailed inventory verification.
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Specifications

Inputs

Up to 14 RTDs (Pt-100, 4-wire).

Outputs / Protocols

4–20 mA, HART, Modbus, Tankway, or proprietary gauge interface.

Accuracy

±0.1 °C depending on RTD calibration.

Temperature Range

–200 °C to +250 °C (RTD dependent).

Power Supply

Loop-powered or external 24 VDC.

Construction

NEMA 4X / IP66 housing, aluminum or stainless steel.

Mounting

Field or rack mount.

Integration

Direct interface with MCG 351 average temperature probes and Cognesense gauges

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If you have questions not covered here, please contact the Cognesense support team for assistance.

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Why can't a single-point temperature sensor be used in large storage tanks?

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In large storage tanks, liquids often experience thermal stratification, meaning the temperature varies significantly from the top to the bottom. Relying on a single-point sensor can lead to volumetric errors of up to in inventory calculations, which is unacceptable for custody transfer. The MCG 2350’s multi-point averaging eliminates this bias.

Does the MCG 2350 meet international custody transfer standards?

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Yes. The MCG 2350 is specifically designed to meet or exceed the requirements set by key international standards bodies, including API, ISO, and OIML, ensuring your temperature data is audit-ready and globally compliant.

What are the benefits of integrating the MCG 2350 with L&J gauges?

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Direct integration allows the entire gauging system (level and temperature) to function as a unified custody-transfer solution. The MCG 2350 provides the necessary temperature correction data directly to the gauge or host system, simplifying the architecture and ensuring the final volume or mass calculation is based on the most accurate data possible.

What temperature probes are compatible with the converter?

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It directly integrates with MCG 300 RTDs and MCG 351 average temperature probes, as well as other compatible L&J temperature devices.

How is the MCG 2350 different from a standard temperature transmitter?

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It performs true multi-point averaging from up to fourteen RTDs, eliminating stratification errors and ensuring custody-grade accuracy.

Can the converter be used in hazardous areas?

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Yes. The housing is explosion-proof, and the internal intrinsic safety barrier supports connection to IS or XP probes.

Is the device suitable for retrofit installations?

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Absolutely. Its flexible mounting options, communication protocols, and universal RTD compatibility make it ideal for both new and existing installations.

Summary

The MCG 2350 Average Temperature Converter provides custody-grade temperature averaging by digitally processing up to 14 RTD inputs for accurate volume correction in petroleum terminals and chemical storage. With ±0.1 °C accuracy, multi-protocol output, and explosion-proof construction, the MCG 2350 ensures compliant inventory accounting and fair custody transfer across Cognesense measurement systems.

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