Overview
The Honeywell TC-IXL061 (51309288-225) is a six-channel thermocouple input module designed to acquire temperature signals from multiple thermocouple types. It supports nine thermocouple types and provides 16-bit resolution for temperature measurement. In addition, a dedicated cold junction channel supports cold junction compensation, while its high isolation voltage and noise rejection specifications support signal acquisition in electrically noisy control systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | TC-IXL061 |
| Brand | Honeywell |
| Part Number | 51309288-225 |
| Product Type | Thermocouple Input Module |
| Input Channels | 6 thermocouple inputs |
| Cold Junction Channel | 1 |
| Supported Thermocouple Types | B, E, J, K, R, S, T, N, C |
| Input Voltage Range | -12 mV to +78 mV |
| High-Resolution Input Range | ±12 mV to +30 mV |
| Resolution | 16-bit |
| Update Rate | 50 ms per channel |
| Stabilization Time | Less than 80 ms |
| Common Mode Rejection Ratio | 120 dB at 60 Hz; 100 dB at 50 Hz |
| Normal Mode Rejection | 60 dB |
| Isolation Voltage | 2546 VDC |
| Operating Temperature | -40 deg C to +85 deg C |
| Dimensions | Approximately 170 x 80 x 45 mm |
| Weight | Approximately 0.3 kg |
Temperature Signal Acquisition
The TC-IXL061 accepts signals from nine thermocouple types, including B, E, J, K, R, S, T, N and C. Its six input channels allow the controller to collect temperature measurements from multiple field points through one module. Furthermore, the additional cold junction channel supports the compensation needed for thermocouple measurements.
Measurement Performance and Signal Isolation
The 16-bit resolution provides digital measurement granularity, while the 50 ms update rate defines the channel measurement update interval. The module also specifies a stabilization time of less than 80 ms. Meanwhile, its common-mode and normal-mode rejection specifications help reduce the influence of electrical interference on low-level thermocouple signals.
The specified 2546 VDC isolation provides electrical separation between channels and the system. Therefore, the isolation rating is an important consideration when evaluating signal interfaces and electrical protection requirements.
Frequently Asked Questions
Q: How many thermocouple inputs does the Honeywell TC-IXL061 support?
A: It supports six thermocouple input channels and one additional cold junction channel. The input configuration accommodates nine thermocouple types: B, E, J, K, R, S, T, N and C.
Q: What is the function of the cold junction channel?
A: Thermocouples generate a voltage related to the temperature difference between their measuring junction and reference junction. The cold junction channel supports reference-junction compensation, which helps the system calculate the measured temperature accurately.
Q: What should be checked when replacing a TC-IXL061?
A: Verify the complete part number, 51309288-225, thermocouple type, input configuration, terminal arrangement and system compatibility. In addition, confirm the replacement module’s hardware and configuration requirements before installation.
Replacement and Configuration Notes
Honeywell identifies the TC-IXL062 as the replacement for the TC-IXL061. However, replacement is not a direct terminal-block interchange. The terminal block requires rewiring, and installations using an RTP require a new prewired cable. Therefore, check the existing wiring arrangement before selecting the replacement.
- Terminal Block: TC-TBNH, 20-position
- Open Thermocouple Detection: Upscale reading
- Typical Open Thermocouple Detection Time: 5 seconds
- Channel Bandwidth: 0 to 15 Hz (-3 dB)
- Maximum Power Dissipation: 4.3 W
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