Description
At-A-Glance Executive Brief
- Model: 1C31116G04
- Brand: Emerson Ovation
- Part Type: Analog Input Personality Module (P-Mod)
- Lifecycle status: Obsolete OEM, stocked new surplus and refurbished
- System compatibility: Ovation 13-bit AI E-Modules 1C31113G01 / 1C31113G03
- Core function: Voltage signal conditioning with cold junction compensation for thermocouples
Technical Introduction
Field thermocouple readings drift without accurate cold junction measurement at the I/O rack terminals. This personality module mates with the Ovation 1C31113 series analog input electronics module to provide front-end signal conditioning and galvanic isolation for low-level voltage inputs. Its built-in temperature sensor captures terminal block temperature and feeds cold junction compensation data back to the paired E-module, correcting thermocouple measurements automatically. It installs in the Ovation base unit before seating the electronics module, defining the channel signal type and terminal wiring layout for 8 analog input channels.
Engineer’s Takeaway This P-mod is purpose-built for thermocouple mV inputs. It cannot be swapped for 1C31116G02/G03 current personality modules; mixing part numbers removes cold junction compensation and produces skewed temperature readings.
Core Technical Specifications
| Parameter | Value |
|---|---|
| Model | 1C31116G04 |
| Module Type | Analog Input Personality Module |
| Supported Channels | 8 |
| Primary Function | Low-level voltage conditioning + cold junction compensation |
| Compatible E-Modules | 1C31113G01, 1C31113G03 |
| Mounting | Ovation I/O base unit, paired with AI electronics module |
| Isolation | Galvanic channel isolation |
| Onboard component | Integrated temperature sensor for CJC |
Please refer to the OEM datasheet for complete environmental tolerances.
Field Engineer’s Tech Notes
- The personality module must be fitted into the base unit first, followed by the electronics module. Reversing assembly order can bend interlock pins and prevent proper mechanical locking.
- The onboard CJC sensor sits on the P-mod circuit board. Avoid direct airflow or radiant heat from nearby power supplies hitting this module, as localized temperature shifts introduce thermocouple measurement offset.
Adaptive QA & Testing Protocol
Each unit undergoes bench validation paired with a compatible 1C31113 electronics module. We inject precision mV thermocouple simulator signals to all 8 channels while varying the module ambient temperature to verify cold junction compensation accuracy. Channel isolation resistance and continuity across terminal pins are checked. Backplane handshake confirms the E-module correctly recognizes the 1C31116G04 personality profile. Test reports and short validation videos are available upon request.
Buyer’s FAQ
Q: Can I pair 1C31116G04 with 1C31113G02 or G05 electronics modules? A: Physical fit is possible, but this personality module is engineered for G01/G03 low mV thermocouple applications. Mismatched combinations will produce incorrect I/O scaling and CJC faults.
Q: What warranty covers new surplus or refurbished Emerson 1C31116G04? A: All units carry a 12-month hardware warranty. Warranty excludes damage from misassembly, bent connector pins, or use with incompatible electronics modules.
Q: Does this personality module support 4-20mA transmitters? A: No. This P-mod handles voltage/mV thermocouple signals only. Select 1C31116G02 or G03 personality variants for 4-20mA loop inputs.
Q: What lead time applies to this obsolete Ovation personality module? A: Stocked units ship within 1–3 working days. If inventory is depleted, sourcing lead time may extend to 4–8 weeks based on surplus availability.
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