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P0971WV

The Foxboro P0971WV is a DIN-rail mounted signal isolator designed for hazardous area applications (Zone 0/1). This unit provides 4-20mA isolation with HART® pass-through, ensuring safe signal transmission between field instruments and control systems.

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Key Features
1. Safety & Isolation
Entity Parameters:

Ui = 30V DC / Ii = 120mA / Pi = 1.2W

1500V AC isolation (input/output/power)

Galvanic separation for ground loop prevention

2. Signal Processing
Input: 4-20mA (2-wire transmitter powering)

Output: 4-20mA (active/passive selectable)

Accuracy: ±0.1% of span

Response Time: <50ms

3. Diagnostics
LED status indicators (power, loop, fault)

Open wire detection

HART® signal transparency

4. Mechanical Design
12.5mm DIN-rail width

-40°C to +70°C operation

IP20 enclosure (IP65 with optional cover)

5. Certifications
ATEX/IECEx (Ex ia IIC T4 Ga)

FM/CSA (Class I Div 1)

SIL 2 (IEC 61508)