TC-IXL062 Honeywell Experion PKS Thermocouple Input Module

Honeywell TC-IXL062 | 6-Point Thermocouple Input Module

The Honeywell TC-IXL062 is a thermocouple input module designed for compatible Honeywell Experion PKS control system configurations. It provides six temperature measurement channels and two cold junction channels for thermocouple-based process measurement.

The module accepts low-level thermocouple signals across two specified input ranges: -12 mV to +78 mV and a high-resolution range of -12 mV to +30 mV. Its 16-bit resolution, channel-to-channel isolation, and cold junction compensation provisions support temperature acquisition in industrial process environments.

For engineering selection, three factors deserve particular attention: thermocouple type, cold junction sensor configuration, and Experion PKS software release. Types D and L are not supported in releases earlier than Experion PKS R210 patch 10, according to the supplied specification.

01 | Measurement Channel Architecture

• Manufacturer: Honeywell
• Model: TC-IXL062
• System family: Honeywell Experion PKS
• Product type: Thermocouple input module
• Measurement channels: 6 thermocouple input channels
• Cold junction channels: 2
• Input range: -12 mV to +78 mV
• High-resolution input range: -12 mV to +30 mV
• Resolution: 16 bits
• Typical resolution: 1.4 µV
• High-resolution range: 0.70 µV
• Input impedance: Greater than 10 MΩ
• Maximum power dissipation: 4.3 W
• Terminal block: TC-TBNH, 20-position

02 | Thermocouple Compatibility and Temperature Accuracy

Thermocouples produce low-level millivolt signals. Reliable temperature measurement therefore depends on the selected sensor type, input range, cold junction compensation, and installation conditions.

Parameter	Specification	Engineering consideration
Supported thermocouple types	B, E, J, K, R, S, T, N, C, D, L	Verify the sensor type against the system configuration and software release.
Standard input range	-12 mV to +78 mV	Confirm the expected thermocouple signal remains within the configured range.
High-resolution range	-12 mV to +30 mV	Check the sensor's expected signal span before selecting this range.
Resolution	16 bits; 1.4 µV typical	Resolution describes signal granularity, not total measurement accuracy.
High-resolution setting	0.70 µV	Use the applicable range specification when evaluating measurement performance.
Accuracy at 25°C, standard range	0.1% FSR ±90 µV	Use the specified full-scale range when calculating the applicable error budget.
Accuracy at 25°C, high-resolution range	0.1% FSR ±42 µV	Consider this specification together with sensor and cold junction errors.
Cold junction sensor error	±0.3°C	Includes the specified local or remote cold junction sensor error.

Thermocouple selection note: Types D and L require Experion PKS R210 patch 10 or later according to the supplied documentation. If the installed system uses an earlier release, confirm supported sensor types before ordering or changing the configuration.

03 | Cold Junction Compensation: Two Sensors Required

Thermocouple measurement requires cold junction compensation to account for the temperature at the reference junction. The TC-IXL062 specification identifies two cold junction channels and lists the spare cold junction thermistor as TC-CJRT02.

• Spare CJR thermistor: TC-CJRT02
• Quantity specified: Two CJR thermistors per module
• Local cold junction sensor: Supported
• Remote cold junction sensor: Supported
• Specified cold junction sensor error: ±0.3°C

When troubleshooting temperature offsets across several channels, check the cold junction sensor arrangement before replacing the input module. Confirm that the required thermistors are installed correctly and that the selected local or remote sensor configuration matches the actual wiring.

A cold junction compensation fault can affect the reported temperature even when the thermocouple itself and the input wiring remain intact. The sensor type, reference temperature, terminal arrangement, and system configuration should therefore be checked as part of the measurement chain.

04 | Signal Quality, Response Time and Isolation

Performance parameter	Specification
Module update rate	50 ms for all channels
Settling time to 5% of full scale	Less than 80 ms
Channel bandwidth	0 to 15 Hz at -3 dB
Normal-mode noise rejection	60 dB at 60 Hz
Common-mode rejection	160 dB minimum, tested at 600 VAC, 60 Hz, with 100 Ω imbalance
Input offset drift	0.5 µV/°C typical
Gain drift	25 ppm/°C
Gain drift, standard range	2.3 µV for the -12 mV to +78 mV range
Gain drift, high-resolution range	1.1 µV for the -12 mV to +30 mV range
Overvoltage capability	120 VAC/VDC continuous at 25°C
Channel-to-channel isolation	250 V; 100% tested at 1900 V for 2 seconds
User-to-system isolation	250 V; 100% tested at 1900 V for 2 seconds
Maximum power dissipation	4.3 W

The 50 ms module update rate and less-than-80 ms settling specification describe different aspects of response. They should not be interpreted as a guarantee of the total process-control response time, which also depends on system execution, configuration, and application logic.

The stated overvoltage capability is a module specification, not permission to apply abnormal voltage during routine operation. Maintain the intended thermocouple wiring and follow the manufacturer's installation requirements.

05 | Open Thermocouple Detection and Diagnostic Checks

The module specification identifies open thermocouple detection with an upscale reading. The stated typical detection time is two seconds. This is useful when investigating sensor wiring faults, but it should not be treated as a complete diagnostic system for every field-circuit failure.

• Open thermocouple indication: Inspect the sensor wiring, terminal connections, thermocouple junction, and extension cable for an open circuit.
• Temperature reading is unusually high: Check whether the module is reporting an upscale reading associated with open-circuit detection. Verify the actual sensor circuit before assuming the process temperature is high.
• Reading is consistently offset: Confirm the thermocouple type, configured input range, cold junction sensor arrangement, and wiring polarity.
• Reading fluctuates with electrical equipment: Inspect routing near drives, contactors, and other noise sources. Verify grounding, shielding, and separation of low-level sensor wiring from power wiring.
• Several channels show similar errors: Check shared cold junction compensation, terminal block connections, configuration, and environmental conditions before concluding that multiple sensor elements have failed.
• Reading does not settle as expected: Compare the observed behavior with the 50 ms update rate and less-than-80 ms settling specification. Account for sensor thermal response and process dynamics.

Diagnostic limitation: The supplied information does not establish a complete list of module alarm codes or channel-level diagnostic flags. Use the relevant Experion PKS diagnostic tools and hardware documentation to confirm the exact fault status and recovery procedure.

06 | Compatible Hardware and Installation Planning

The specified connection terminal block is the TC-TBNH 20-position terminal block. Confirm that the installed hardware, module configuration, terminal block, and field wiring arrangement match the relevant Honeywell documentation.

• Terminal block: TC-TBNH, 20-position
• Cold junction accessories: TC-CJRT02 thermistors; the specification states that two are used per module
• System compatibility: Verify the applicable Experion PKS configuration and software release
• Sensor wiring: Confirm thermocouple type, polarity, extension-wire compatibility, and terminal assignment
• Input configuration: Confirm the selected measurement range and cold junction compensation mode
• Power planning: Account for the maximum 4.3 W module dissipation and consult the system's module power consumption data for backplane current requirements

The exact supported chassis, mounting position, and replacement rules should be confirmed using the applicable system documentation. Do not infer full hardware compatibility from the model number alone.

07 | Environmental and Electrical Installation Conditions

• Normal-mode noise rejection: 60 dB at 60 Hz
• Common-mode rejection: 160 dB minimum under the specified test conditions
• Input impedance: Greater than 10 MΩ
• Overvoltage capability: 120 VAC/VDC continuous at 25°C
• Maximum power dissipation: 4.3 W

The supplied specification lists RFI immunity as TBD. No definitive RFI immunity value should therefore be claimed from these data alone.

For installation, follow Honeywell requirements for terminal wiring, shielding, grounding, isolation, and cabinet conditions. Isolate equipment as required by site procedures before changing wiring or removing a module.

08 | Global PLC Spare HUB's Insight

When sourcing the TC-IXL062, verify the thermocouple type and Experion PKS release before checking price and availability. A module may have the required channel count yet still be unsuitable for a specific installation if the configured sensor type or cold junction arrangement is unsupported.

For temperature measurement problems, compare the full measurement chain: sensor type, thermocouple extension wiring, terminal block, cold junction thermistors, configured input range, and reported process value. This is often more useful than replacing the input module based on an offset reading alone.

Global PLC Spare HUB supports industrial automation spare-parts sourcing and model verification for maintenance and replacement projects. Provide the complete model, installed system details, and required quantity so our team can review the order information before quotation.

09 | Warranty, Shipping and Supply

• Product: Honeywell TC-IXL062 Thermocouple Input Module
• Warranty: 12 months, subject to the agreed warranty terms and confirmed product condition.
• Shipping options: FedEx, UPS, and DHL, subject to destination and service availability.
• Dispatch: Typically arranged within 24–48 hours after stock and payment confirmation, where available.
• Order verification: Confirm stock status, condition, lead time, shipping charges, terminal block requirements, and system compatibility before purchase.

10 | Frequently Asked Questions

Q1. Can the TC-IXL062 measure Type D and Type L thermocouples on every Experion PKS release?

No. According to the supplied specification, Types D and L are not supported in releases earlier than Experion PKS R210 patch 10. Verify the installed software release and the configured sensor type before using either thermocouple type.

Q2. Why can two channels using the same thermocouple type show different temperatures?

Check sensor calibration, extension-wire material, terminal connections, polarity, and the physical temperature at the reference junction. Differences in cold junction compensation or field wiring can create offsets even when both channels use the same thermocouple type. Compare the readings against a suitable reference instrument before replacing the module.

Q3. When should I choose the high-resolution input range?

Use the -12 mV to +30 mV range only when the expected thermocouple signal fits within that range and the application benefits from its specified 0.70 µV resolution. Confirm the full operating temperature span and sensor type before changing ranges. Do not select a narrower range without checking the potential for out-of-range readings.

Q4. What should I investigate if a temperature channel reports an upscale value?

Start by checking the thermocouple circuit for an open connection, because the specification identifies upscale reading as the open-circuit detection behavior. Inspect the sensor, extension cable, terminal block, and wiring continuity. Confirm the system's channel status and configured sensor type before interpreting the reading as an actual process overtemperature.

Q5. What should I confirm when purchasing a replacement module for an existing DCS?

Provide the complete TC-IXL062 model number, installed Experion PKS release, thermocouple types in use, terminal block model, cold junction sensor arrangement, and required quantity. If the system uses Type D or L sensors, include the software release information. These details help identify configuration considerations before the order is finalized.

Request a Quote for TC-IXL062

Looking for a Honeywell thermocouple input module for an existing Experion PKS installation? Contact Global PLC Spare HUB with the part number, system release, required quantity, and delivery destination. Request a quotation for availability, lead time, shipping options, and compatibility review.

Tags