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Honeywell 8C-PAIMA1 Low-Level Analog Input Module

Configured for low-level temperature signal acquisition in Honeywell Experion PKS Series 8 / C300 systems, the Honeywell 8C-PAIMA1 (8C-PAIMA1 Low-Level Analog Input Module) provides direct electrical conversion of RTD and thermocouple sensor signals into controller process data.

Hardware Specifications

Parameter	Specification
Model	8C-PAIMA1
Brand	Honeywell
Origin	USA
Dimensions	Standard Series 8 IOM form factor
Operating Temp	-40 deg C to +70 deg C
System Compatibility	Experion PKS Series 8 / C300
Module Type	Low-Level Analog Input Module (LLAI)
Input Channels	16 channels
Input Sensor Types	Thermocouples and Resistance Temperature Detectors (RTD)
Supported Thermocouple Types	Type B, E, J, K, N, R, S, T
Supported RTD Types	Pt100, Pt200, Pt500, Ni120, Cu10
RTD Wiring Support	2-wire, 3-wire, or 4-wire depending on IOTA configuration
Input Voltage Range	-20 mV to +100 mV
Analog-to-Digital Conversion	16-bit resolution
Common Mode Rejection Ratio	>120 dB at 50/60 Hz
Normal Mode Rejection Ratio	>60 dB at 50/60 Hz
Accuracy	Typically +/-0.05% of span
Associated IOTA	8C-TAIMA1 Low-Level AI IOTA
Environmental Protection	Conformal coating according to ISA S71.04 Class G3
Mounting Method	Direct plug-in connection to Series 8 IOTA
Replacement Function	Hot-swappable module replacement support

Cold Junction Compensation and Channel Isolation

The 8C-PAIMA1 performs direct temperature measurement processing through RTD and thermocouple inputs. Therefore, the module integrates cold junction compensation (CJC) for thermocouple signal correction and applies digital linearization to improve measurement conversion accuracy.

Furthermore, the module provides channel-level signal processing to reduce interference between sensor inputs. The conformal coating protects internal electronic components from humidity, corrosive contaminants, and industrial environmental exposure.

The module follows Honeywell process I/O design practices for Experion PKS systems. It supports temperature monitoring loops without external signal conversion devices when compatible sensors connect through the associated 8C-TAIMA1 IOTA.

Frequently Asked Questions

Q: What sensor types can the Honeywell 8C-PAIMA1 accept?
A: The module accepts low-level temperature signals from thermocouples and RTD sensors. Supported thermocouple types include B, E, J, K, N, R, S, and T, while RTD support includes Pt100, Pt200, Pt500, Ni120, and Cu10.

Q: Does the 8C-PAIMA1 provide thermocouple cold junction compensation?
A: Yes. The module includes cold junction compensation (CJC) for thermocouple input processing and performs digital temperature signal correction.

Q: Can the 8C-PAIMA1 be replaced while the system remains powered?
A: Yes. The module supports hot-swappable replacement within the Series 8 I/O architecture, following the applicable system maintenance procedures.

Field Installation Guidelines

Install the 8C-PAIMA1 module directly onto the compatible 8C-TAIMA1 IOTA assembly. Verify that the IOTA wiring matches the selected RTD or thermocouple configuration before applying power.

Use shielded instrumentation cables for low-level temperature signals. Connect cable shields according to the plant grounding standard to reduce electromagnetic interference. Separate sensor wiring from high-current power conductors and switching circuits.

Before operation, verify sensor polarity, terminal assignments, and input configuration parameters within the Experion PKS engineering environment. Confirm that diagnostic status indicators show normal module operation after installation.

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