OMEGA TT-K-30-SLE-500 GG-K-30 Type K Thermocouple Sensing Wire

OMEGA TT-K-30-SLE-500 GG-K-30 Type K Thermocouple Sensing Wire

The OMEGA TT-K-30-SLE-500 and GG-K-30 Type K Thermocouple Sensing Wire are designed for accurate temperature monitoring in electronics manufacturing, SMT reflow profiling, industrial ovens, thermal testing, laboratory measurement, and process control applications.

Both models use fine 30 AWG Type K thermocouple conductors, providing low thermal mass and fast response to changing temperatures. TT-K-30-SLE-500 uses PFA insulation and Special Limits of Error conductors, making it suitable for precise profiling and measurement applications where flexibility and insulation resistance are important. GG-K-30 uses fiberglass insulation for applications where the wire is exposed to higher temperatures.

These thermocouple wires can be connected to compatible temperature profilers, thermometers, controllers, data loggers, and acquisition systems. They are commonly selected by SMT process engineers, electronics factories, laboratories, maintenance teams, and industrial equipment manufacturers requiring repeatable temperature data.

Cause

Why Temperature Measurement Results Become Unstable

Accurate temperature profiling depends not only on the measurement instrument but also on the thermocouple wire, sensing junction, installation method, polarity, and insulation condition.

Several common problems can affect measurement results.

For SMT reflow profiling, even a small change in thermocouple position can influence measured peak temperature, ramp rate, and time above liquidus.

Selecting a suitable Type K thermocouple wire and installing it correctly helps reduce measurement variation.

Solution

Use the Correct Thermocouple Wire for Each Temperature Environment

The solution is to select the wire according to the actual process temperature, accuracy requirement, insulation requirement, and measurement method.

TT-K-30-SLE-500 Is Recommended When

• Type K thermocouple measurement is required.
• 30 AWG fine wire is suitable.
• Fast thermal response is important.
• PFA insulation is preferred.
• The wire temperature remains within approximately 260 degrees C.
• Special Limits of Error accuracy is required.
• A 500 ft spool is suitable for regular production use.
• Reflow oven profiling or engineering testing is the main application.

GG-K-30 Is Recommended When

• Type K thermocouple calibration is required.
• A fine 30 AWG conductor is required.
• Higher temperature insulation is necessary.
• The environment exceeds the practical temperature capability of PFA.
• Fiberglass insulation is acceptable for the installation.
• The wire is used around industrial ovens, heating systems, thermal chambers, or high temperature test equipment.

Specifications

TT-K-30-SLE-500 Specifications

GG-K-30 Specifications

Model Comparison

Application

1. SMT Reflow Oven Temperature Profiling

TT-K-30-SLE-500 is particularly suitable for PCB reflow temperature profiling.

The thermocouple junction can be attached to different locations on a PCB, including:

• Component surfaces
• Component terminals
• PCB surfaces
• BGA areas
• Connectors
• Ground plane areas
• High thermal mass components
• Low thermal mass components

The sensing wire connects these measurement points to a compatible temperature profiler.

During the reflow process, the profiler records the temperature curve and allows engineers to evaluate:

• Heating rate
• Preheat performance
• Soak temperature
• Time above liquidus
• Peak temperature
• Cooling rate
• Temperature differences across the PCB

2. Reflow Oven Process Verification

Temperature profiling may be required after:

• Oven maintenance
• Heater replacement
• Conveyor speed adjustment
• Product changeover
• New PCB introduction
• Recipe modification
• Process troubleshooting

Thermocouple sensing wire allows engineers to measure actual product temperature instead of relying only on oven zone settings.

3. Industrial Oven Monitoring

GG-K-30 is useful for higher temperature industrial applications where fiberglass insulation is preferred.

Typical equipment includes:

• Industrial ovens
• Heating chambers
• Curing equipment
• Drying systems
• Thermal test chambers
• Process heating equipment
• Laboratory ovens

The actual wire exposure temperature should always be checked before selection.

4. Laboratory Temperature Testing

Fine Type K thermocouple wire can be used to create custom measurement points for research, quality testing, and product development.

Common laboratory applications include:

• PCB thermal testing
• Electronic component testing
• Heat sink evaluation
• Motor temperature testing
• Enclosure thermal testing
• Heater performance analysis
• Reliability testing
• Prototype validation

5. Temperature Data Logging

The wire can be connected to compatible Type K measurement instruments such as:

• Temperature profilers
• Data loggers
• Digital thermometers
• Temperature controllers
• Multipoint recorders
• Data acquisition systems

The receiving instrument must support Type K thermocouple input.

How It Works

A Type K thermocouple uses two different metal alloys to generate a small voltage when there is a temperature difference between the measurement junction and the reference point.

The measuring instrument interprets this voltage and converts it into a temperature reading.

Basic Measurement Process

Step 1. Create the sensing junction

The two thermocouple conductors are joined together at the measuring end.

Step 2. Attach the junction

The sensing junction is positioned on the component, PCB, machine surface, or other location requiring temperature measurement.

Step 3. Route the sensing wire

The thermocouple wire is routed toward the profiler, data logger, thermometer, or controller.

Step 4. Connect the Type K input

The thermocouple is connected with correct polarity to a compatible Type K measurement channel.

Step 5. Temperature creates a voltage

When the sensing junction temperature changes, the thermoelectric voltage also changes.

Step 6. The instrument calculates temperature

The instrument converts the thermoelectric signal into a temperature value.

Step 7. Measurement data is recorded

The result can be displayed as a real time temperature reading or recorded as a temperature curve for process analysis.

Why 30 AWG Wire Is Suitable for Profiling

30 AWG thermocouple wire has a relatively small conductor diameter.

This provides several advantages:

Fine wire requires careful handling. Excessive pulling, crushing, repeated sharp bending, or poor mounting can shorten its service life.

How To Choose

Step 1. Confirm the Thermocouple Type

Confirm that the temperature profiler, meter, or controller uses Type K thermocouple input.

Different thermocouple types should not be mixed in the same measurement circuit.

Step 2. Confirm Maximum Temperature

The maximum temperature of the wire environment is a major selection factor.

The insulation temperature rating should always be considered separately from the theoretical capability of Type K thermocouple alloys.

Step 3. Determine Accuracy Requirements

TT-K-30-SLE-500 includes Special Limits of Error conductors.

This configuration is useful when tighter measurement tolerance is preferred for:

• Reflow profiling
• Process validation
• Engineering verification
• Laboratory measurement
• Temperature comparison testing

SLE describes thermocouple accuracy classification. It does not increase the insulation temperature rating.

Step 4. Select the Insulation Type

Choose PFA insulation when you need:

• Better flexibility
• Good moisture resistance
• Good chemical resistance
• Compact wire construction
• SMT reflow profiling
• General industrial measurement

Choose fiberglass insulation when you need:

• Higher temperature resistance
• Industrial oven measurement
• Thermal chamber testing
• Higher temperature process monitoring

Step 5. Confirm the Required Length

TT-K-30-SLE-500 is supplied as a 500 ft spool.

For regular process engineering, maintenance, or production profiling, a longer spool can reduce frequent replacement orders.

GG-K-30 may be available in different spool lengths depending on the complete ordered model.

Step 6. Confirm Connector Requirements

Some temperature profilers and meters use miniature Type K connectors.

Before ordering, confirm:

• Connector type
• Male or female configuration
• Instrument input
• Required finished cable length
• Bare wire or assembled cable requirement

Selection Guide

Installation Recommendations

For more repeatable temperature measurements:

1. Confirm that the instrument is configured for Type K thermocouples.
2. Maintain correct positive and negative conductor polarity.
3. Secure the sensing junction firmly to the measurement location.
4. Avoid excessive pulling or sharp bending of 30 AWG wire.
5. Keep the wire within the specified insulation temperature.
6. Replace wire with damaged insulation or unstable readings.
7. Use compatible thermocouple connectors.
8. Keep sensor positions consistent during repeated profiling.
9. Avoid unnecessary conductor joints.
10. Check every measurement channel before important production tests.

Typical Reflow Profiling Procedure

FAQ

Q1. Can TT-K-30-SLE-500 be used for SMT reflow oven temperature profiling?

Yes. Its 30 AWG Type K construction provides low thermal mass and fast temperature response, making it suitable for PCB reflow profiling, process verification, thermal curve recording, and electronics manufacturing temperature testing.

Q2. What is the main difference between TT-K-30-SLE-500 and GG-K-30?

TT-K-30-SLE-500 uses PFA insulation with a temperature capability of approximately 260 degrees C, while GG-K-30 uses fiberglass insulation for higher temperature environments approaching approximately 482 degrees C under suitable conditions.

Q3. What does SLE mean in TT-K-30-SLE-500?

SLE means Special Limits of Error. It identifies thermocouple conductors produced to tighter accuracy limits than standard grade wire, making this configuration suitable for profiling, process verification, engineering testing, and precision temperature measurement.

Q4. Can GG-K-30 be connected to a temperature profiler?

Yes. GG-K-30 can be used with compatible instruments that support Type K thermocouple inputs. The required connector style should be confirmed according to the profiler, data logger, thermometer, or controller being used.

Q5. What information should I provide for a quotation?

Please provide the required part number, quantity, spool length, insulation type, maximum working temperature, application, accuracy requirement, connector requirement, and destination country. This information helps confirm the correct configuration and prepare an accurate quotation.

Contact Us

Looking for TT-K-30-SLE-500, GG-K-30, 30 AWG Type K thermocouple wire, reflow profiling wire, or related temperature sensing products?

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• Required model or part number
• Required quantity
• Spool length
• Maximum working temperature
• Application
• Accuracy requirement
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