Product Description
The Yokogawa AAP849-S00 is a high-density pulse-to-current signal conversion module designed for the CENTUM VP Integrated Control System. It converts high-frequency pulse train inputs into standardized 4–20 mA DC analog outputs, enabling seamless integration of frequency-based field instruments with analog control loops.
This module is ideal for interfacing devices such as flow meters, tachometers, and speed sensors, providing accurate real-time representation of rotational speed and flow rate. Support for dual-redundant system configurations ensures continuous operation in mission-critical applications. Built for harsh industrial environments, the AAP849-S00 delivers high accuracy across a wide operating temperature range, making it suitable for power generation and chemical processing facilities.
Technical Specifications
| Parameter | Description |
|---|---|
| Model Number | AAP849 |
| Suffix Code | -S00 |
| Signal Conversion | 8-channel Pulse Input → 8-channel Analog Output |
| Input Type | Transistor contact (Open Collector) |
| Input Frequency Range | 0.1 Hz to 10 kHz |
| Output Signal | 4 to 20 mA DC |
| Conversion Accuracy | ±0.1% of full scale |
| Isolation | Non-isolated between input and output |
| Power Supply | 24 V DC (20.4 to 26.4 V DC) |
| Current Consumption | 110 mA (Nominal) |
| HART Protocol | Supported (pass-through diagnostics & configuration) |
| Operating Temperature | -40°C to +70°C |
| Dimensions (W × H × D) | 78 × 36 × 23 mm |
| Net Weight | 0.45kg |
Industrial Applications
-
Turbine Monitoring
Converts turbine speed pulse signals into analog feedback for governor and control systems. -
Flow Measurement
Integrates turbine or positive displacement flow meters into standard 4–20 mA DCS loops. -
Safety & Utility Systems
Monitoring coolant flow, generator status, and auxiliary equipment in thermal and nuclear plants. -
Oil & Gas
Real-time frequency-to-current conversion for wellhead instrumentation and storage monitoring.
Frequently Asked Questions
Q: Does the AAP849-S00 support redundancy?
A: Yes. It is compatible with dual-redundant CENTUM VP configurations, improving system availability.
Q: Can the module be configured remotely?
A: Yes. HART communication allows remote diagnostics, calibration, and maintenance.
Q: Is there electrical isolation between input and output?
A: No. This model is non-isolated, optimized for compact size and cost-effective systems with a common ground.
| 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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