Emerson 8202-HO-IS 8‑Channel Intrinsically Safe Analog Output Module

Product Description

The Emerson 8202-HO-IS is an 8‑channel intrinsically safe analog output module from the PAC8000 series. It delivers reliable 4–20 mA signals while supporting full HART® communication for advanced diagnostics. Designed for hazardous area installations, it ensures safety without compromising precision, making it ideal for oil & gas, chemical, and power generation environments. Moreover, its modular architecture allows seamless integration into both general-purpose and intrinsically safe zones, providing engineers with flexible deployment options. In addition, the module’s robust fault detection and temperature stability guarantee consistent performance in demanding industrial conditions.

Key Features

• Intrinsically safe design suitable for Zone 2 and Class I Div. 2 hazardous areas.
• High precision 4–20 mA outputs with 12‑bit resolution.
• HART® pass-through and variable/status reporting for smart device monitoring.
• Fast response time: 80 ms; 1 s in HART mode for critical control applications.
• Open-circuit detection to identify wiring faults proactively.
• Modular PAC8000 compatibility allows easy integration and expansion.
• Configurable fail-safe drive and output initialization for system reliability.

Technical Specifications

• Channels: 8 intrinsically safe analog outputs
• Signal Range: 4–20 mA
• Resolution: 12 bits
• Response Time: 80 ms; 1 s HART
• Load Resistance: 0–650 Ω max
• Voltage to Load: ≥ 13 V at 20 mA
• Accuracy (@25 °C): ±20 μA
• Temperature Stability: ±0.006% of span per °C (–40 °C to +70 °C)
• Current Consumption: 630 mA (system)
• Fault Detection: Open-circuit field wiring detection (>685 Ω typical)
• Isolation: Channel to Railbus 60 V AC; between channels none
• HART Capabilities: Pass-through, variable and status reporting
• Configurable Parameters: Output initialization state, fail-safe drive, channel status

Typical Applications

• Driving I/P converters in pneumatic control systems for precise actuation.
• Controlling valve positioners in chemical and oil & gas plants.
• Providing safe analog signals to recorders, actuators, and control systems.
• Supporting condition-based maintenance using HART® diagnostics.
• Deploying in modular PAC8000 systems for flexible, scalable automation.

FAQ

Q1: Is the 8202-HO-IS suitable for explosive environments? Yes, it is intrinsically safe for Zone 2 and Class I Div. 2 areas, meeting stringent safety standards.

Q2: Can it communicate with smart field devices? Absolutely, HART® pass-through and variable/status reporting allow full diagnostics with smart devices.

Q3: What happens if a wiring fault occurs? The module detects open circuits proactively, ensuring rapid fault identification and system reliability.

Q4: Is the module compatible with other PAC8000 components? Yes, its modular architecture allows seamless integration with general-purpose and hazardous zone PAC8000 systems.

Q5: What is the typical response time for analog outputs? Outputs respond in 80 ms normally, and 1 s when HART® communication is active.