8C-PAIMA1 51454473-175 Series 8 Low Level Analog Input RTD Module | Honeywell

The Honeywell 8C-PAIMA1 51454473-175, also cataloged as the 8C-PAIMA1 Low Level Analog Input RTD Module, operates as a dedicated hardware component for temperature sensor signal processing within Experion PKS Series 8 platforms.

Hardware Specifications

Process Control & Cold Junction Compensation

The 8C-PAIMA1 51454473-175 module digitizes low-level millivolt signals from thermocouples and resistance changes from RTD field sensors over an operating range of -200 to +850 deg C. Internal signal conditioning provides channel-to-channel isolation and precision cold junction compensation (CJC) for thermocouple inputs, mitigating thermal gradient errors across the field wiring terminals. Digitized temperature data is transferred directly across the Series 8 backplane to the controller for execution in Experion PKS control loops.

Frequently Asked Questions

Q: Does the 8C-PAIMA1 51454473-175 support hot-swapping during active system operation?

A: Yes, the module supports hot-swapping via the associated Series 8 Input Output Termination Assembly (IOTA) without disrupting power or controller backplane communication to adjacent modules.

Q: How is cold junction compensation (CJC) handled for thermocouple field wiring?

A: Cold junction compensation is executed directly through internal circuitry and temperature sensors integrated into the matching Series 8 IOTA block.

Q: What power rail energizes the low-level signal conditioning circuitry of the module?

A: The module operates from a 24 VDC supply delivered via the Series 8 carrier backplane and IOTA base.

Field Installation Guidelines

• IOTA Mounting: Align the 8C-PAIMA1 51454473-175 module with the dedicated slot on the Series 8 IOTA board and press firmly until the locking tabs snap into place.
• Shield Cable Termination: Terminate RTD and thermocouple individual pair cable shields at the designated chassis ground bar to prevent electrical noise from causing measurement drift.
• Wiring Separation: Route low-level RTD and thermocouple field cables in dedicated instrument trays, maintaining isolation from high-voltage AC power and inductive load wiring.