Honeywell 8U-TAIMA1 Series 8 Temperature Input Module
Manufacturer: Honeywell
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Part Number: 8U-TAIMA1
Condition：New with Original Package
Product Type: Analog Input Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Honeywell 8U-TAIMA1 Series 8 Module
The Honeywell 8U-TAIMA1, also cataloged as the 8U-TAIMA1 Low-Level AI IOTA, operates as a dedicated hardware component for isolated analog signal and temperature input acquisition within Experion PKS C300 networks.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 8U-TAIMA1 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 0.8 kg |
| Dimensions | 3.5 cm x 14 cm x 14.5 cm |
| Operating Temp | -40 to +85 deg C |
| Power Consumption | 24 VDC; module current approximately 120 mA |
| Module Type | TC/RTD Temperature Input IOTA (Uncoated) |
| Number of Channels | 16 fully isolated channels |
| Supported Inputs | Thermocouples (J, K, E, T, B, S, R), RTDs (Pt100, Ni120, Cu10/50), mV signals (-20 mV to +100 mV), 4-20 mA |
| Resolution | 12-bit |
| Scan Rate | 1 second for all 16 channels |
| Isolation | 2500 VAC channel-to-channel, channel-to-system, channel-to-power |
| CMRR | >=120 dB @ 50/60 Hz |
| NMRR | >=60 dB @ 50/60 Hz |
| Hardware Coating | Uncoated (8U designation for non-G3) |
Process Control & DCS Instrumentation Properties
Operating within the Honeywell Experion PKS architecture, this unit provides precise signal processing via integrated cold junction compensation (CJC) across all thermocouple configurations. The device implements a strict 2500 VAC galvanic channel-to-channel isolation architecture to prevent ground loops and protect the core processing backplane from electrical transients. Furthermore, native compatibility with the 4-20 mA HART loop protocol allows for pass-through digital telemetry tracking, while built-in open thermocouple detection (OTD) prevents invalid process variable propagation during sensor physical-layer faults.
Frequently Asked Questions
Q: How does the 8U-TAIMA1 handle thermal drift at the termination point?
A: The underlying Input Output Termination Assembly (IOTA) features integrated cold junction compensation (CJC) sensors that track local terminal temperatures, updating calibration coefficients dynamically to maintain accurate thermocouple voltage translation.
Q: Can this module be deployed in environments containing corrosive gases like hydrogen sulfide?
A: No. The "8U" prefix designates this module as uncoated (non-G3). For corrosive or harsh environmental conditions, the conformal-coated version (8C-TAIMA1) must be used.
Q: What happens to the process control loop if a thermocouple wire breaks?
A: The active open thermocouple detection (OTD) circuit identifies the high impedance state and immediately triggers a configurable fault status flag to prevent the C300 controller from executing control logic based on invalid data.
Field Installation Guidelines
Mount the 9-inch IOTA baseplate horizontally or vertically onto standard grounded DIN rails inside a clean, dust-free instrument cabinet. Secure the 8U-TAIMA1 module onto the matching IOTA connector pins and verify the locking tabs engage properly. When field wiring thermocouples, RTDs, or 4-20 mA HART loop protocol transmitters, utilize separate shielded twisted-pair cables for each loop. Terminate the shield drain wires strictly at the designated IOTA instrument ground bar; do not ground shields at both ends to avoid generating ground loop currents that disturb the 12-bit conversion phase. Ensure low-voltage field sensor signaling lines maintain a minimum physical clearance from high-voltage AC cables and switching inductive loads within the enclosure panels.