Description

8201‑HI‑IS 8‑Channel Intrinsically‑Safe HART Analog Input Module

Technical Specifications

• Product Model: 8201‑HI‑IS
• Brand:  MTL
• Warranty: One Year
• Input Voltage: Backplane Railbus power; built‑in 15 V minimum loop excitation for 2‑wire IS transmittersEaton
• Operating Temperature: ‑40 °C to +70 °CEaton
• Storage Temperature: ‑45 °C to +85 °C
• Response Time: 33 ms analog conversion; 0.75 s HART data update cycleEmerson
• Protection Class: IP20 (DIN‑rail carrier‑mount; ATEX / IECEx intrinsically‑safe field‑side certification)
• Accuracy Class: ±20 μA @25 °C, 16‑bit resolution; ±0.006 % span / °C temperature stabilityEaton
• Output Frequency: Not applicable (analog input module)
• Rated Current Range: 600 mA max backplane consumption; intrinsically‑safe limited field current for hazardous‑area instrumentsEmerson
• Communication Interface: PAC8000 Railbus backplane; snap‑on field terminal base
• Supported Protocols: HART pass‑through, Railbus internal I/O bus; works with 8521‑RT‑DE RTU controller
• Overload Capacity: Intrinsic‑safety energy‑limiting circuit; open‑/short‑circuit channel diagnostics; 60 V AC channel‑to‑Railbus isolationEaton
• Dimensions: 102 mm × 330 mm × 51 mm (PAC8000 standard I/O module footprint)

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Product Overview

The 8201‑HI‑IS is an 8‑channel intrinsically‑safe 4‑20 mA HART analog input I/O module for PAC8000 remote I/O systemsEmerson. It supplies certified intrinsically‑safe loop power to two‑wire HART transmitters located in Zone 0 / Zone 1 hazardous locations, converts analog process signals to digital values, and passes HART multi‑variable and diagnostic data across the Railbus to host RTU/controller. Built‑in channel diagnostics detect open‑loop and short‑loop field wiring faults and report status to upper‑level SCADA.

This module addresses key hazardous‑site automation challenges: certified intrinsic safety for explosive‑risk field instruments, consolidated HART instrument data acquisition, and drop‑in spare‑part compatibility for PAC8000 remote node installations. Mechanical keying prevents incorrect module‑to‑base mating; quick‑swap field terminals simplify field‑wiring maintenance without replacing the I/O electronics. Process‑automation engineers, oil‑gas well‑site and pipeline‑station technicians, and hazardous‑area retrofit integrators benefit most. It mounts on standard PAC8000 DIN‑rail carriers, supports hot‑swap module replacement during running operations, and handles pressure, temperature and flow measurement for refineries, natural‑gas facilities and petrochemical plants.

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Key Application Notes

• Works with PAC8000 Railbus system; must pair with PAC8000 carrier and host controller such as 8521‑RT‑DE, cannot run standalone
• Field side is ATEX / IECEx intrinsically‑safe certified for Zone 0/1 hazardous‑area transmitters; module electronics reside in safe‑area cabinet / Zone 2 cabinet
• Supports HART pass‑through to read secondary variables, device status and diagnostic information from smart field transmitters
• Detects loop open‑circuit (<0.5 mA) and short‑circuit (>21.5 mA) faults on each channel for alarm reportingEaton
• No inter‑channel galvanic isolation; isolation exists between field intrinsically‑safe circuits and Railbus backplane logic sideEaton
• Snap‑on replaceable field terminal base; mechanical key‑lock design avoids wrong‑module mis‑installation on siteEmerson