MCG 2350 — Average Temperature Converter

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Overview

MCG 2350

For terminal operators, custody-transfer officers, automation engineers, and EPC specifiers who require accurate product temperature averaging for inventory management and regulatory compliance, the MCG 2350 delivers 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 that eliminates stratification bias 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 external barriers.
Unlike single-point measurement devices or generic temperature converters, the MCG 2350 provides custody-grade accuracy, high-resolution digital processing, and seamless integration with L&J radar, servo, and encoder gauges. With UL, C-UL, and ATEX/CENELEC approvals, it supports globally compliant operation while delivering the precision and reliability needed for audit-ready custody transfer and tank-farm automation.
MCG 2350 — Average Temperature Converter

Features

Custody-Grade Averaging

Digitally processes multiple RTD inputs to deliver accurate corrected volumes and eliminate temperature-driven custody errors.

Wide Temperature Range

Multi-Point Temperature Processing

Supports up to fourteen RTD elements, resolving temperature stratification in large or vertically layered tanks.

System Integration

Built-In Intrinsic Safety Barrier

Enables safe connection to explosion-proof or intrinsically safe probes without additional external hardware.

Seamless Gauge Integration

Directly interfaces with L&J radar gauges, servo gauges, and the MCG 2000MAX transmitter to unify level and temperature data.

Outputs

Flexible Output Protocols

Provides analog (4–20 mA) and digital (HART, Modbus, Tankway, proprietary gauge interface) communication for SCADA, DCS, and inventory systems.

Global Certifications

Global Compliance & Durability

UL, C-UL, and ATEX/CENELEC approvals combined with a rugged NEMA 4X / IP66 enclosure ensure long-term reliability in harsh tank-farm conditions.

Details

How It Works

The MCG 2350 continuously scans and multiplexes the RTD elements inside an average temperature probe—up to fourteen in total—to determine which sensors are submerged and should be included in the average. Using high-resolution digital processing, it computes a true representative product temperature that aligns with API MPMS methods for temperature averaging.
This eliminates the stratification bias that occurs when relying on single-point sensors and ensures accurate corrected-volume and mass calculations essential for custody transfer, inventory reconciliation, and loss-control programs.
An internal intrinsic safety barrier allows the converter to connect directly to explosion-proof or intrinsically safe temperature probes, simplifying installation in hazardous areas. When paired with L&J radar or servo gauges, the MCG 2350 becomes part of a unified custody-measurement system that delivers synchronized level, temperature, and density data.

Applications

  • Custody Transfer Tanks: Provides true average temperature for corrected volumes, reducing buyer-seller discrepancies and ensuring audit-ready accuracy.
  • Petroleum Storage Terminals: Eliminates stratification errors in large tanks, improving inventory accuracy and reducing reconciliation adjustments.
  • Chemical Storage Operations: Ensures precise temperature data for products where small thermal variations affect quality, density, or reactivity.
  • Automated Tank-Farm Systems: Supplies standardized analog and digital outputs for seamless integration into SCADA, DCS, or tank-management platforms.
  • Refined Product Blending & Distribution: Maintains accurate averaging for multi-layered fuel or additive tanks used in distribution and blending operations.
  • High-Accuracy Mass or Density Calculations: Supports advanced measurement applications requiring high-precision thermal input for volumetric, mass, or density correction.

Technical Specifications

Table Header Table Header
Inputs
Up to 14 RTDs (Pt-100, 4-wire)
Outputs / Protocols
4–20 mA, HART, Modbus, Tankway, proprietary gauge interface
Accuracy
±0.1 °C (RTD-dependent)
Temperature Range
–200 °C to +250 °C (probe-dependent)
Power Supply
Loop-powered or 24 VDC external
Construction
NEMA 4X / IP66 enclosure; aluminum or stainless-steel housing
Mounting
Field-mount or rack-mount configurations
Integration
Compatible with MCG 300 RTDs, MCG 350/351 temperature probes, MCG 1600SFI radar, MCG 1500SFI servo, and MCG 2000MAX transmitter
Approvals
UL, C-UL, ATEX/CENELEC

Documents and Downloads

Product Flyer

Have a look at the flyer to get all the tech specs and product features. Brochure

User Manual

Read the manual for detailed information and instructions. Manual

Calibrations

Check out a sample cert from our calibration lab. Certificate

Contact Support

If you have a question that we have not covered then just get in touch and we’ll be happy to help.

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FAQs

We have tried to answer the most common questions we are asked here.

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.
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.
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.
It directly integrates with MCG 300 RTDs and MCG 351 average temperature probes, as well as other compatible L&J temperature devices.
It performs true multi-point averaging from up to fourteen RTDs, eliminating stratification errors and ensuring custody-grade accuracy.
Yes. The housing is explosion-proof, and the internal intrinsic safety barrier supports connection to IS or XP probes.

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