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UD1AG3

The Yokogawa UD1AG3 is not a field instrument like a pressure transmitter or flow meter, but rather a Signal Conditioner. It is a key component of Yokogawa's UTAdvanced series of signal converters, designed to be mounted on a DIN rail inside a control panel or system cabinet.

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Parameters & Specifications
Category Specification
Model Code UD1AG3
Series UTAdvanced Signal Conditioners
Type Analog Input / Analog Output Isolator & Converter
Input Signal 4 to 20 mA DC (Current input, 2-wire)
Output Signal 4 to 20 mA DC (Current output)
Isolation 3-Port Isolation (3-Way Isolation):
• Input ⇨ Output
• Input ⇨ Power Supply
• Output ⇨ Power Supply
This is a key feature that breaks ground loops and enhances system safety.
Power Supply 24 V DC (Nominal). Common operating range: 20 to 55 V DC.
Accuracy ±0.1% of span (Typical for high-performance isolators)
Response Time < 150 ms (to 90% of final value)
Load Resistance 0 to 550 Ω (for the 4-20mA output signal)
Ambient Temperature -20 to 70 °C (-4 to 158 °F)
Mounting DIN Rail Mount (Standard 35 mm DIN rail)
Case Material Plastic (Flame-retardant resin)
Protection Rating IP20 (For indoor use in a protective enclosure only. Not dust or water-resistant.)
LED Indicator Green LED for power status.
Connections Removable screw terminal block for easy wiring.
Safety Certifications CE marked. Complies with relevant EU directives. Often has FM and CSA approvals for general-purpose applications.