(Detailed Parameters/Specifications)
Category Parameter Specification for Model AAI141-S50
General Manufacturer Yokogawa Electric Corporation
Model AAI141-S50
Type Non-Isolating Safety Barrier (Zener Barrier)
Mounting DIN Rail Mount (35mm standard)
Approval ATEX, IECEx, NEPSI (Standard for intrinsic safety)
Isolation None (Non-isolating)
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
(Defines the maximum energy allowed into hazardous area)
Maximum Loop Resistance Limited by the safe area power supply and barrier resistance
Output (System Side - Safe Area) Signal Type 4 to 20 mA DC (Same as input, non-isolated)
Load Resistance Limited by the safe area power supply and barrier resistance
Power Supply (Safe Area) Requirement A certified IS power supply is REQUIRED
Power Direction Reverse polarity protection (typically external)
Performance Accuracy ±0.1% of span (Essentially no error introduced by barrier)
Operating Temperature -20 to +70°C
Voltage Drop Approximately 7-9 V (typical for zener barriers)