TCA-MS 8 Channel Amplifier - Type K Thermocouple

OVERVIEW

PRODUCT DISCONTINUED MAY 2025


• Thermocouple Input: Type K (8 independent input channels)
• Linearized Analog Output: -0.5 to 5 VDC (8 independent output channels)
• Supply Voltage: 10 to 32 VDC
• On-board CJC
• Includes (8) mini-plug signal input connectors
• Includes detachable signal output/power wiring harness
• Compact Size, only 7.0" x 3.5" x 1.6"


MADE IN THE USA


The HGSI TCA-MS-K-8-A4 EGT Probe Thermocouple Amplifier Module functions to convert the low output voltage signal from up to 8 Type K thermocouple probes into 8 independent linearized 0 to 5 VDC output voltages. This output is ideal for interfacing to dataloggers, aftermarket ECU's, temperature indicators, chart recorders, controllers, or other instrumentation equipment.

Temperature Measuring Range: -193 to +2282°F (-125 to +1250°C)
Output Scale Factor: 2.2 mV / °F (4.0 mV / °C)
 

Options:

Calibration Test Report
SKU
TCA-MS-K-8-A4
Availability
DISCONTINUED
Discontinued
On
Price
$999.00
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TECHNICAL SPECIFICATIONS

Input:K type thermocouple (ungrounded)
Number of Thermocouple Input Channels:8
Input Resistance:60k Ω
Max Bias Voltage on Input:5.8 V
Thermocouple Measuring Range:-193 to +2282°F (-125 to +1250°C)
Input Connection:Mini Thermocouple Jack
Number of Output Channels:9 total (8 for Thermocouple Channels, 1 for Accelerometer)
Analog Output Range:-0.5 to +5 VDC (0 VDC = 0°C)
Thermocouple Output Scale Factor (nominal):2.2 mV / °F (4.0 mV / °C)
Accelerometer Output Scale Factor (nominal):625 mV / g
Resolution:Infinite
Response Time:> 1 mS
Non-Linearity:< +/- 2% FRO
Output Cable:12 conductor, 22 AWG, PVC jacket, 3 foot long (detachable)
Supply Voltage:10 to 32 VDC
Current Draw:< 50 mA
Operating Temperature Range:+32 to +125°F (0 to +50°C)
Humidity:85% Max. RH (non-condensing)
Liquid & Dust Protection:IP51
Housing Dimensions (L x W x H):7.0 x 3.5 x 1.6 inch
Weight:0.6 lb (265 g)

 

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Multi-Channel EGT Signal Conditioning for High-Performance Temperature Measurement

Limited inventory may still be available. Contact us for recommended replacement options or upgraded solutions.

The TCA-MS 8 Channel Thermocouple Amplifier is a high-performance signal conditioning module designed to convert low-level Type K thermocouple signals into stable, linearized voltage outputs. Built specifically for applications such as exhaust gas temperature (EGT) monitoring and multi-point thermal measurement, this amplifier enables accurate, real-time temperature data acquisition across multiple channels.

With support for up to eight independent thermocouple inputs, compact form factor, and simple integration with data acquisition systems and engine control units, the TCA-MS is a proven solution for demanding testing, motorsports, and industrial applications.

 

Multi-Channel Type K Thermocouple Signal Conditioning

The TCA-MS is designed to process up to eight independent Type K thermocouple inputs simultaneously, making it ideal for applications that require monitoring multiple temperature points at once.

Each input channel is independently conditioned and converted into a corresponding analog voltage output, allowing users to:

  • Monitor multiple exhaust gas temperatures

  • Track temperature distribution across systems

  • Analyze thermal performance in real time

  • Simplify multi-sensor installations

This multi-channel capability is especially valuable in motorsports, engine development, and industrial testing environments.

 

Designed for Type K Thermocouples

The TCA-MS is optimized specifically for Type K thermocouples, one of the most widely used sensor types for high-temperature applications.

Key advantages of Type K compatibility include:

  • Wide temperature measurement range

  • Durability in harsh environments

  • Fast response for dynamic conditions

The module supports a temperature measurement range of:

  • -193 to +2282°F (-125 to +1250°C)

This makes it well suited for applications involving extreme temperatures, including exhaust systems, industrial processes, and thermal testing.

 

Linearized Analog Output for Easy Integration

The TCA-MS converts thermocouple signals into linearized analog outputs, making it easy to interface with a wide range of instrumentation and control systems.

  • Output range: -0.5 to +5 VDC

  • 0 VDC corresponds to 0°C

  • Scale factor: 2.2 mV/°F (4.0 mV/°C)

This standardized output simplifies integration with:

  • Data acquisition systems (DAQ)

  • Aftermarket ECUs and engine management systems

  • Temperature indicators and displays

  • Chart recorders and control systems

The linear output ensures that temperature data can be easily interpreted and processed by downstream equipment.

 

Fast Response for Real-Time Monitoring

With a response time greater than 1 millisecond, the TCA-MS is capable of capturing rapid temperature changes in dynamic systems.

This fast response makes it ideal for applications such as:

  • Exhaust gas temperature monitoring

  • Engine tuning and diagnostics

  • Transient thermal testing

  • High-speed data acquisition

The ability to track fast-changing temperatures provides critical insight into system performance and helps support accurate tuning and control.

 

Built-In Cold Junction Compensation (CJC)

Accurate thermocouple measurement requires proper cold junction compensation. The TCA-MS features integrated on-board CJC, automatically correcting for ambient temperature at the input connection.

This ensures:

  • Improved measurement accuracy

  • Reduced need for external compensation hardware

  • Consistent performance across varying environmental conditions

 

Additional Output Channel for Expanded Functionality

In addition to the eight thermocouple channels, the TCA-MS includes a ninth output channel for accelerometer input, expanding its functionality for applications that require combined thermal and motion data.

  • Accelerometer scale factor: 625 mV/g

This added capability makes the module particularly useful in motorsports and testing environments where vibration and temperature data are analyzed together.

 

Compact, Rugged Design

The TCA-MS is designed for easy integration into a wide range of systems, with a compact footprint and durable construction.

  • Dimensions: 7.0" x 3.5" x 1.6"

  • Weight: approximately 0.6 lbs

The enclosure is rated IP51, providing protection against dust and limited moisture exposure, making it suitable for both laboratory and field environments.

 

Easy Installation and Connectivity

The module is designed for straightforward installation with minimal setup time.

Key features include:

  • (8) mini thermocouple input connectors

  • Detachable output and power wiring harness

  • 12-conductor, 22 AWG cable (3 ft length)

This plug-and-play design simplifies wiring and allows for quick integration into existing systems.

 

Low Power Consumption

The TCA-MS operates on a wide input voltage range:

  • Supply voltage: 10 to 32 VDC

  • Current draw: less than 50 mA

This low power requirement makes it suitable for mobile systems, battery-powered setups, and energy-efficient applications.

 

Reliable Performance in Industrial Environments

The TCA-MS is built to operate reliably in a variety of environmental conditions:

  • Operating temperature: 32°F to 125°F (0°C to 50°C)

  • Humidity: up to 85% RH (non-condensing)

Its robust design ensures consistent performance in demanding applications.

 

Typical Applications

The TCA-MS 8 Channel Thermocouple Amplifier is widely used in:

  • Motorsports and engine development

  • Exhaust gas temperature (EGT) monitoring

  • Industrial process control

  • Thermal system testing

  • Aerospace and automotive R&D

  • Multi-point temperature data acquisition

Its ability to convert thermocouple signals into usable voltage outputs makes it a valuable tool in both testing and operational environments.

 

Made in the USA Quality

Manufactured in the USA, the TCA-MS is built to high quality standards, ensuring reliable performance and long-term durability.

 

Why Choose the TCA-MS Thermocouple Amplifier?

The TCA-MS stands out as a reliable multi-channel temperature measurement solution due to its:

  • 8 independent Type K thermocouple input channels

  • Linearized analog output for easy integration

  • Wide temperature measurement range

  • Fast response time for dynamic applications

  • Built-in cold junction compensation

  • Compact and rugged design

  • Additional accelerometer channel for expanded capability

  • Low power consumption

 

A Proven Solution for Multi-Channel Temperature Measurement

The TCA-MS Thermocouple Amplifier has been a trusted solution for converting thermocouple signals into actionable data across a wide range of applications.

Although this product has been discontinued, it remains a proven design for multi-channel temperature monitoring systems.

 

Need a Replacement or Upgrade?

If you are looking to replace or upgrade the TCA-MS, our team can help you identify modern alternatives that meet your application requirements.

Contact us today to find the right solution for your system.

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