Product Description
The AAR181 is a high-precision, 16-channel isolated analog input module designed for Yokogawa FIO (Field network I/O) systems. It supports both voltage inputs (-10 to +10 V DC) and 4–20 mA current loops, making it a versatile interface for a wide range of field transmitters.
Unlike non-isolated modules, the AAR181 provides full channel-to-channel and channel-to-system isolation, protecting the control system from electrical noise, ground loops, or faults in one field circuit.
Engineered for high reliability and safety, the module is intrinsically safe (IS) compliant and supports dual-redundant configurations, making it ideal for mission-critical applications where downtime is unacceptable.
Technical Specifications
| Parameter | Specification |
|---|---|
| Input Channels | 16 channels, fully isolated (channel-to-channel & channel-to-system) |
| Signal Ranges | -10 V to +10 V DC or 4–20 mA DC |
| Input Impedance | Current: 250 Ω internal; Voltage: ≥ 200 Ω external load (depending on IOM) |
| Redundancy | Supports dual-redundant configuration |
| Internal Power Consumption | 730 mA (single configuration) |
| Operating Temperature | 0 to 50°C |
| Safety Standards | Intrinsic Safety (IS) compliant |
Application Scenarios
The AAR181 is widely deployed in high-integrity process control environments, including:
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Chemical reactors
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Offshore oil and gas platforms
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Gas processing and petrochemical plants
Its superior isolation makes it ideal for field signals from electrically noisy areas or distributed sensors with different grounding potentials.
Frequently Asked Questions
Why are empty slots required during installation?
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Each channel features high-power isolation circuitry that generates additional heat. Empty slots provide airflow and thermal dissipation, ensuring hardware reliability and long-term performance.
Can I mix voltage and current inputs on the same module?
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Yes. The hardware can handle both types, but proper wiring and DCS configuration are required to ensure each channel is correctly mapped to its respective sensor type.
| Quick Quotes | Receive price & availability FAST from our dedicated customer service team. |
|---|---|
| Delivery | Expedited, Freight, And International Shipping Available. |
| Condition | 100% New with Original Package |
| Payment | We accept American Express, Discover, MasterCard, PayPal, and Visa. Our site is secured by RapidSSL. |
| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
| Q: Is Our Pricing Competitive? |
| A: Yes, we collaborate with over 50 countries worldwide. As a top supplier in China, we offer significant discounts based on market trends. |
| Q: What Is the Warranty Period? |
| A: All our new and original products come with a standard one-year warranty. |
| Q: What Payment Methods Do We Accept? |
| A: We require 100% T/T (Telegraphic Transfer) payment before shipping. For items with a lead time, a 30% deposit is needed upfront, and the remaining 70% is due before shipping. If you have a representative in China, you can arrange an RMB transfer through them. |
| Q: What Shipping Methods Do We Use? |
| A: We primarily use FedEx, DHL, UPS, and BRE for shipping. If you have an account with any of these carriers, you can handle shipping directly. We also offer free shipping to China-based freight forwarders. |
| Q: What Is Our Delivery Time? |
| A: Delivery usually takes 1-3 days after receiving the initial payment. For items with a lead time, shipping will occur according to the specified schedule. |
| Q: How Do We Package the Goods? |
| A: We ensure safe packaging with multiple layers of protection. Products are first placed in their original boxes and sealed with labels. A layer of bubble wrap is then added for collision protection during transit. Finally, the items are packed securely in durable boxes. |
| Q: How Can Customers Contact Us and Request a Quote? |
| A: You can reach out to us via email, WhatsApp, WeChat, Skype, or your preferred communication platform. Contact us with your needs, and we'll provide a prompt, customized quote. |
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