The Honeywell MU-GAIH84 is a high-level analog input and smart transmitter interface. This Field Terminal Assembly (FTA) processes signals from up to 16 field devices in hazardous areas. Consequently, it provides a critical safety barrier and signal conditioning layer for process control systems.
Core Signal Interface and Safety Function
This FTA excels at interfacing with both conventional 4-20 mA and smart digital transmitters. It provides essential 250 V AC galvanic isolation between the field and safe-area control systems. Moreover, the MU-GAIH84 supports redundant or non-redundant IOP connections via 50-pin connectors.
The unit includes an auxiliary connector that outputs 1 to 5 V DC process variable signals. Therefore, it enables remote monitoring and alarm functions without additional signal converters.
Detailed Electrical and System Specifications
Designed for integration into Honeywell’s Experion PKS and Safety Manager systems, this FTA meets rigorous standards. Below are its comprehensive technical, safety, and interface specifications.
Comprehensive Technical Specifications:
| Parameter | Specification |
|---|---|
| Manufacturer | Honeywell |
| Model Number | MU-GAIH84 |
| Product Category | Field Terminal Assembly (FTA) / Analog Input Interface |
| Primary Function | High-Level Analog Input / Smart Transmitter Interface (HLAI/STI) |
| Number of Channels | 16 |
| Input Signal Type | 4-20 mA (with or without digital HART/DE communication) |
| Compatible Transmitters | Honeywell ST3000 Series & other 4-20mA smart transmitters |
| Input Device per Channel | 1 field device per Galvanic Isolation Module (GIM) |
| Input Voltage (Open Circuit) | Maximum 28 V DC |
| Input Voltage (at 20 mA) | Minimum 15 V DC |
| Auxiliary Output Signal | 1 – 5 V DC (Process Variable per channel) |
| Galvanic Isolation | 250 V AC (Continuous, Field to System) |
| Primary Interface | 50-pin connectors (for redundant/non-redundant IOP) |
| Safety Certification | Designed for hazardous area installation (Ex d, Ex i) |
| Module Dimensions (HxWxD) | Standard FTA form factor for rail mounting |
| Module Weight | Approximately 1.2 kg |
| Primary Component Count | 16x signal conditioners, 16x isolation barriers, 1x terminal board |
| Internal Energy Storage | None (passive interface, 0 Joules) |
| Power Requirement | Powered via the IOP backplane connection |
| Operating Temperature | -40°C to +70°C (typical for industrial FTAs) |
| Humidity Rating | 5% to 95% non-condensing |
| Agency Approvals | ATEX, IECEx, cULus for Hazardous Locations |
Application and System Context
This interface is critical for connecting field instrumentation in oil & gas, chemical, and pharmaceutical plants. For sourcing related industrial safety or protection components, platforms like Alibaba list various items. For instance, you can find devices like the RMS-TSG-TZ-C Static Trip unit for motor protection.
Details
| Weight | 0.3 kg |
|---|---|
| Dimensions | 30 × 313 × 278 mm |
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