AAI141-H50_YOKOGAWA_PRODUCT_吉林易择科技技术发展有限公司

The Yokogawa AAI141-H50 is a single-channel, DC input isolating safety barrier. Its primary function is to protect hazardous areas by limiting the energy (voltage and current) that can reach field devices, ensuring intrinsic safety. It converts input signals from field devices like 4-20 mA analog transmitters (2-wire) into isolated and amplified output signals for the control system in the safe area. The "-H50" suffix indicates a high-density model designed for efficient mounting on a 50mm DIN rail.

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DESCRIBE

(Detailed Parameters/Specifications)
Category Parameter Specification for Model AAI141-H50
General Manufacturer Yokogawa Electric Corporation
Model AAI141-H50
Type Isolating Safety Barrier (Intrinsic Safety Barrier)
Mounting DIN Rail Mount (35mm or 50mm)
Approval ATEX, IECEx, NEPSI (Standard for intrinsic safety)
Input (Field Side - Hazardous Area) Signal Type 4 to 20 mA DC (2-wire transmitter)
Intrinsic Safety (IS) Parameters Ui = 28V, Ii = 93mA, Pi = 0.65W, Ci = 83nF, Li = 4.2mH
(These define the maximum energy allowed into the hazardous area)
Maximum Loop Resistance 550 Ω (at 20 mA)
Output (System Side - Safe Area) Signal Type 4 to 20 mA DC (Current output)
Load Resistance 0 to 550 Ω
Isolation Input/Output/Power: 1500 V AC
Power Supply Operating Voltage 20 to 32 V DC (Nominal 24 V DC)
Current Consumption Approx. 35 mA (at 24 V DC)
Power Direction Reverse polarity protected
Performance Accuracy ±0.1% of span
Operating Temperature -20 to +70°C
Response Time < 10 ms

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