Yokogawa AAR145 RTD/POT Input Module

Frequently Asked Questions (FAQ)

Q1: What types of sensors are supported by the AAR145 module?
A1: It supports RTD (e.g., Pt100) and potentiometer (POT) inputs, with independent configuration per channel.

Q2: Does the module offer electrical isolation?
A2: Yes, isolation exists between system and input, and also between channels.

Q3: How are RTD and POT inputs configured?
A3: Each channel can be independently configured as either RTD or POT input.

Q4: What is the maximum allowable wiring resistance?
A4: For RTD inputs, the wiring resistance must not exceed 150 Ω per wire.

Q5: What is the measurement accuracy of the module?
A5: The RTD input has an accuracy of ±150 mΩ, while POT input is ±0.2 % of full scale.

Q6: Is the module suitable for redundant system configurations?
A6: Yes, the AAR145 supports dual-redundant operation.

Q7: What is the data update period of the module?
A7: The data update period is 1 second, suitable for slowly changing signals like temperature.

Q8: Can the module be used in intrinsically safe zones?
A8: Yes, but only with an isolation barrier, not with a Zener barrier.

AAR145 RTD/POT Input Module Yokogawa

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