Product Description
The AAP135-S50/K4A00 is a specialized pulse input module for high-precision frequency measurement and pulse counting within the Yokogawa CENTUM VP distributed control system (DCS).
It captures rapid pulse sequences from field devices such as turbine flow meters, encoders, and tachometers, converting them into digital values for flow totalization, speed monitoring, and rotational control. Designed for industrial environments, it features robust noise filtering and galvanic isolation, ensuring the integrity of high-frequency signals. This makes it essential for critical process automation where pulse-based measurements drive operational efficiency.
Technical Specifications
| Parameter | Specification |
|---|---|
| Component Identification | AAP135-S50/K4A00 |
| Manufacturer | Yokogawa Electric Corporation |
| Module Function | Pulse Input / Frequency Counter |
| Input Signal Support | Contact, voltage, and open-collector pulse signals |
| Measurement Accuracy | High-frequency pulse resolution suitable for flow and motion telemetry |
| Galvanic Isolation | Integrated to prevent ground loop interference |
| Operational Environment | Standard industrial cabinet installation |
| Power Supply | Supplied via CENTUM VP backplane |
| System Integration | Plug-and-play compatible with Yokogawa I/O racks |
| Thermal Range | Designed for continuous operation in standard process control climates |
| Physical Footprint | Optimized for high-density I/O configurations |
Field Applications
The AAP135-S50/K4A00 is extensively used in industries requiring fluid dynamic monitoring and rotational speed regulation, including:
-
Petrochemical refineries – turbine flow measurement
-
Water treatment plants – accurate flow totalization
-
Power generation and heavy machinery – rotational speed tracking for critical equipment
It helps ensure operational limits are maintained and can trigger protective logic in response to abnormal speed variations.
Frequently Asked Questions
Does the AAP135-S50/K4A00 require external scaling?
Yes, raw pulse counts are processed by the controller’s logic software. Scaling to engineering units (e.g., liters per minute, RPM) is performed through CENTUM VP configuration tools.
Is this module compatible with inductive proximity sensors?
Yes, it can interface with standard industrial proximity switches as long as the signal amplitude and frequency meet the module’s input specifications.
| 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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