1C31161G02 | Westinghouse Ovation RTD Interface Module

Emerson Ovation 1C31161G02 – RTD Input Module

The Emerson Ovation 1C31161G02 is an RTD input module for precise temperature measurement in Ovation DCS applications. It supports platinum RTDs and provides high-accuracy resistance-to-temperature conversion for critical process monitoring.

• Module Type: RTD Input Module
• Sensor Support: Pt100 and standard platinum RTDs
• Accuracy: 0.1% reading plus 1 digit
• Input Voltage: 220 V (system supply)
• Response Time: 1 second
• Operating Temperature: −40°C to +85°C
• Communication: Ovation backplane interface
• Mounting: Standard Ovation I/O rack
• Applications: Turbine bearing temperature, boiler tube temperature, process vessel monitoring

Technical Specifications

FAQ

1. Difference From 1C31164G02
   1C31164G02 is another RTD module variant with different channel count or isolation rating. Consult the Emerson hardware manual for exact differences.
2. 3-Wire RTD Support
   Standard Ovation RTD modules support 2-wire, 3-wire, and 4-wire configurations. Select wiring mode in the configuration software.
3. High-Temperature Measurement
   Pt100 range is −200°C to +850°C. For temperatures above 600°C, thermocouple input modules (e.g., 1C31116G04) are the correct choice.
4. Emerson Support Status
   The 1C31161G02 remains supported under Ovation lifecycle policy. The recommended replacement for new designs is 5X00119G02 or 5X00119G03.

Installation Guide

• Step 1: De-energize the I/O branch. Remove the existing RTD module by releasing retention clips.
• Step 2: Inspect the backplane connector. Insert 1C31161G02 into the keyed RTD slot.
• Step 3: Wire RTD leads. For 3-wire, connect two leads to the excitation terminal and one to sense. For 4-wire, use separate excitation and sense pairs.
• Step 4: Configure in Ovation Developer Studio. Select Pt100, wire mode, and engineering units (°C/°F).
• Step 5: Calibrate using a known temperature reference or resistance standard (100.00 Ω = 0°C for Pt100).

Selection Tips

Use 1C31161G02 for legacy Ovation RTD temperature measurement. For new installations, migrate to 5X00119G02 or 5X00119G03 for enhanced diagnostics and wider compatibility. For mixed thermocouple and RTD inputs on one module, consult Emerson for specialty multi-input cards. Verify the sensor curve (IEC 60751 or SAMA) matches the module configuration.