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MCG 300

Resistance Temperature Detector

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MCG 300

Terminal operations managers, custody-transfer engineers, process engineers, and compliance officers rely on accurate product temperature data to calculate corrected volumes, manage inventory, and meet regulatory requirements. The MCG 300 Resistance Temperature Detector (RTD) delivers ±0.5 °F accuracy in a rugged stainless-steel design engineered specifically for demanding tank environments.

Unlike generic RTDs, the MCG 300 is purpose-built for storage tanks of any size or configuration. Rigid elements from 12 to 60 inches and flexible probes up to 100 feet accommodate cone-roof, floating-roof, and deep-tank installations.

Multiple calibration options, including copper, DIN platinum, and platinum-characterized copper, ensure compatibility with custody-transfer standards worldwide.

A dedicated reference lead eliminates lead-wire resistance effects across long cable runs typical in tank farms, preserving accuracy and long-term measurement stability.

With proven durability, broad installation flexibility, and seamless integration with gauging and inventory systems, the MCG 300 provides the reliable temperature measurement foundation required for fiscal accuracy, regulatory compliance, and dependable tank operations.

MCG 300
MCG 300 Resistance Temperature Detector
MCG 300

Features

High Measurement Accuracy

Provides ±0.5 °F precision, ensuring custody transfer calculations remain reliable even under varying tank temperatures and operating conditions.

Lead-Resistance Compensation

Reference lead removes lead-wire resistance effects, preserving accuracy across long conduit runs typical in tank farm installations.

Wide Installation Flexibility

Supports rigid elements up to 60 inches and flexible probes up to 100 feet to accommodate diverse tank geometries and depths.

Multiple Calibration Options

Copper, DIN platinum, and platinum-characterized copper elements ensure compatibility with global custody transfer standards and gauging equipment.

Rugged Construction

Stainless-steel probe and optional materials withstand corrosive fluids and harsh tank atmospheres for long-term performance.

System Compatibility

Integrates seamlessly with transmitters and gauging systems to support accurate corrected volumes, inventory reporting, and process control.

Applications

  • Custody Transfer Gauging: Delivers precise temperature inputs necessary for accurate volume correction, reducing disputes and ensuring audit-ready measurement performance.
  • Process Control: Enables stable temperature monitoring that supports consistent product quality and prevents variations affecting downstream operational efficiency.
  • Inventory Management: Maintains accurate temperature data used to calculate shrinkage, loss, and corrected inventory values during routine operations.
  • High-Pressure Vessels: Compatible with thermowells and fittings designed for elevated pressures, ensuring safe and accurate measurements in demanding environments.
  • Floating-Roof Tanks: Offers mounting hardware and probe configurations that maintain measurement integrity across varying liquid heights in large storage tanks.
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Specifications

Accuracy

±0.5 °F

Construction

Stainless Steel Probe (other materials available)

Element Lengths

12” through 60” standard

Mounting Hardware

Available for cone roof, floating roof, & high-pressure vessels

Thermowell Connections

Up to 1.5” NPT, up to 3” ANSI flange

Calibrations

100 ohm Copper, 100 ohm DIN Platinum, 100 ohm “Platinum Characterized” Copper

Options

Single or dual element, spring-loaded or normal mounting

Housing

304 Stainless Steel with ½” NPT connection standard

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Why is temperature measurement important for custody transfer?

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Liquid products expand and contract with temperature changes. For accurate billing and inventory reconciliation, the volume of a product must be corrected to a standard reference temperature (often 60 °F or 15 °C). The MCG 300’s precise temperature readings ensure this volume correction is accurate, preventing costly financial disputes.

Can the MCG 300 be used for custody-transfer applications?

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Yes. Its ±0.5 °F accuracy and compatible calibration curves make it suitable for API, ISO, OIML, and other custody-transfer measurement systems.

Can the MCG 300 be used in corrosive environments?

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Yes. The MCG 300 is built with a robust stainless-steel probe, making it highly durable and resistant to corrosion. Other materials are also available to suit specific chemical applications, ensuring long-term reliability in harsh tank conditions.

How does the MCG 300 improve accuracy compared to other RTDs?

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The MCG 300 uses a reference lead to cancel out the resistance from the lead wires. This is a crucial feature that ensures the measured resistance is solely from the temperature-sensing element, leading to uncompromised accuracy and reducing potential errors caused by wire length or temperature fluctuations.

What tank types can it be installed on?

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Cone-roof, floating-roof, fixed-roof, high-pressure, and large-volume tanks. Rigid and flexible probe options allow broad installation flexibility.

Summary

The MCG 300 Resistance Temperature Detector delivers ±0.5°F measurement accuracy for tank temperature monitoring in petroleum, chemical, and industrial storage applications. Available in standard and custom probe lengths with stainless steel construction, the MCG 300 integrates with Cognesense’s level gauges and temperature converters to support accurate volume correction and custody transfer calculations.

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Measure.
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