Product Overview
The Emerson 8121-DI-DC-05 Digital Input Module is engineered for reliable signal acquisition in harsh industrial environments. With 16 non-isolated digital input channels, it supports 24VDC logic levels and is ideal for monitoring switches, sensors, and contact closures across a wide range of applications.
Moreover, the module offers selectable input filtering from 2 to 512 milliseconds, allowing users to optimize response time and noise immunity based on system requirements. In addition, it includes an optional pulse counting feature, enabling accurate tracking of high-speed digital events such as flowmeter pulses or encoder signals.
The 8121-DI-DC-05 is part of the PAC8000 Remote I/O family, known for its modularity, environmental resilience, and compatibility with hazardous area installations. Therefore, it is a trusted solution for distributed control systems in oil & gas, power, and manufacturing sectors.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 8121-DI-DC-05 |
| Operating Temperature | -25°C to +60°C |
| Dimensions | 132 mm x 70 mm x 70 mm |
| Weight | 0.3 kg |
Typical Applications
The 8121-DI-DC-05 is widely used in industries requiring high-density digital input monitoring. For instance:
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Oil & Gas: Monitors valve positions, limit switches, and safety interlocks on offshore platforms
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Power Generation: Tracks turbine status, breaker positions, and alarm conditions
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Water & Wastewater: Interfaces with level switches, flow sensors, and pump feedback
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Manufacturing: Captures machine status, operator inputs, and safety gate signals
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Chemical Processing: Supports hazardous area installations with robust diagnostics
In addition, its pulse counting capability makes it ideal for applications involving flow measurement or event tracking.
System Integration Experience
The 8121-DI-DC-05 integrates seamlessly with Emerson’s PAC8000 I/O system, offering open architecture support for DeltaV, Ovation, and third-party DCS platforms. Moreover, its hot-swappable design and LED diagnostics reduce downtime and simplify maintenance.
Therefore, system integrators benefit from faster commissioning, reduced wiring complexity, and long-term reliability in mission-critical environments.
FAQ
Q: What voltage does the 8121-DI-DC-05 support?
A: It supports 18–30VDC digital input signals.
Q: Can it count pulses from flowmeters or encoders?
A: Yes, it includes an optional pulse counting feature per channel.
Q: Is it suitable for hazardous areas?
A: Yes, it’s designed for use in Class I, Division 2 and similar environments.
Q: How fast can it respond to input changes?
A: Input filtering is selectable from 2 to 512 milliseconds.
Q: Does it support hot-swapping?
A: Yes, the module is hot-swappable for easy maintenance and replacement.
| 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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