1. Temperature Controllers Industrial Automation Control For Sale
  2. sku: 11985889194399623
  3. OMEGA CN2516-R1

OMEGA CN2516-R1 Temperature Process Limit Controller Screw Temperature/process 100-240V

Cn2516-r1 Omega Temperature/process Limit Controller 100-240v Missing Screw Used

( Brand: Omega ), ( Manufacturer Part Number: CN2516-R1 ), ( Part Type: Controller Screw )

Review OMEGA Temperature/process Limit Controller 100-240v Missing Screw Used

The **Omega CN2516-R1 Temperature/Process Limit Controller** is a robust, high-performance industrial-grade device designed to provide precise control and monitoring of temperature and process variables in demanding environments. Engineered for reliability and versatility, this controller operates on a universal voltage range of **100 240V AC**, making it suitable for global applications without the need for additional power adapters. Its compact yet durable **screw-terminal design** ensures secure and easy wiring, reducing installation time while minimizing the risk of loose connections a critical factor in harsh industrial settings. Built with Omega s reputation for precision engineering, the CN2516-R1 delivers accurate temperature and process limit control with a **resolution of 0.1 C (0.1 F)** and a **repeatability of 0.1 C**, ensuring consistent performance even under fluctuating conditions.

This controller features a **large, backlit LCD display** with intuitive menu navigation, allowing operators to effortlessly configure and monitor setpoints, alarms, and process variables. The display provides real-time feedback on temperature readings, limit thresholds, and system status, enhancing operational efficiency and troubleshooting capabilities. With **dual relay outputs (SPDT, 10A 250V AC)** and **two programmable limit alarms**, the CN2516-R1 offers flexible control options for heating, cooling, or process regulation applications. Whether used in HVAC systems, industrial ovens, chemical processing, or food processing equipment, this controller ensures that critical parameters remain within predefined limits, preventing equipment damage and maintaining product quality.

Constructed from high-quality materials, the CN2516-R1 is built to withstand the rigors of industrial environments, featuring an **IP65-rated enclosure** that protects against dust, dirt, and moisture. Its rugged design, combined with a **wide operating temperature range of -20 C to 70 C (-4 F to 158 F)**, makes it ideal for use in both controlled facilities and outdoor applications. The controller also includes **fail-safe and auto-restart functions**, ensuring continuous operation even during power interruptions or equipment malfunctions. Additionally, its **modular and scalable architecture** allows for easy integration with other Omega sensors, transmitters, and communication modules, expanding its functionality for more complex automation systems.

Beyond its technical capabilities, the CN2516-R1 is designed with user convenience in mind. Its **easy-to-navigate keypad interface** simplifies programming and parameter adjustments, while the **self-diagnostic features** help identify potential issues before they escalate. The controller supports **RS-485 communication (Modbus RTU)** for seamless integration with SCADA systems, PLCs, or other industrial networks, enabling remote monitoring and control. Whether deployed in a small workshop or a large-scale manufacturing plant, the Omega CN2516-R1 delivers **unmatched reliability, precision, and adaptability**, making it an indispensable tool for professionals who demand performance without compromise.

The **Omega CN2516-R1** is a temperature/process limit controller designed for industrial applications, offering basic control functionality for heating, cooling, or process monitoring. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Omega CN2516-R1**

1. **Affordability** It is a cost-effective option compared to more advanced programmable logic controllers (PLCs) or dedicated industrial controllers. This makes it suitable for small-scale applications, hobbyist projects, or budget-conscious industrial setups.

2. **Simple Installation and Setup** The controller is designed for ease of use, with a straightforward interface for setting temperature limits, hysteresis, and relay control. No complex programming is required, making it accessible for users without extensive technical expertise.

3. **Wide Voltage Range (100 240V AC)** The ability to operate on both 100V and 240V power supplies provides flexibility for global or mixed-voltage environments, reducing the need for additional voltage converters.

4. **Screw Terminal Connections** The screw terminals are robust and easy to work with, reducing the risk of loose connections that can occur with crimp or spring-loaded terminals. This is particularly useful in industrial settings where vibrations or frequent adjustments may occur.

5. **Basic but Reliable Control** The CN2516-R1 is designed for on/off control with adjustable temperature limits, making it ideal for applications like ovens, heaters, freezers, or simple process monitoring where precise PID control is unnecessary.

6. **Compact and Rugged Design** The unit is small and durable, suitable for mounting in control panels or directly on equipment. Its rugged construction suggests it can withstand moderate environmental conditions.

7. **Local Display and Controls** The front panel includes a digital display and knobs for direct adjustment, which is useful for troubleshooting or quick manual overrides without needing external devices.

8. **Relay Output for Direct Control** The built-in relay allows for direct control of heating elements, motors, or other AC loads, simplifying wiring and reducing the need for additional relays or solid-state relays.

9. **No Software Dependency** Unlike PLCs or smart controllers, this unit does not require proprietary software for basic operation, which can be a significant advantage for users who prefer hardware-based solutions.

10. **Good for Educational or Prototyping Purposes** Its simplicity makes it a practical tool for learning about temperature control systems, circuit design, or industrial automation basics.

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### **Cons of the Omega CN2516-R1**

1. **Limited to On/Off Control** The controller does not support proportional-integral-derivative (PID) control or advanced algorithms. This means it cannot achieve precise temperature ramping, gradual heating/cooling, or fine-tuned process optimization. Users requiring smooth control (e.g., for sensitive chemical processes or precise temperature gradients) will need a more advanced controller.

2. **No Communication Protocols** There are no built-in communication interfaces (e.g., Modbus, Ethernet, or RS-485). This limits integration with larger control systems, data logging, or remote monitoring. Users needing to interface with SCADA systems or other devices will require additional hardware (e.g., a gateway or converter).

3. **Basic Alarm and Logging Capabilities** While it can trigger alarms for limit breaches, it lacks built-in data logging or historical trend analysis. Users who need to track temperature over time or generate reports will need to supplement it with external data loggers or computers.

4. **No Built-in Sensors** The controller requires an external temperature sensor (e.g., RTD, thermocouple, or thermistor), which adds to the cost and complexity of setup. Users must ensure compatibility between the sensor and the controller s input type (e.g., 4 20 mA, thermocouple, or RTD).

5. **Manual Override Only** There is no remote control or automation capability. All adjustments must be made locally, which can be inconvenient in large or distributed systems.

6. **Potential for User Error** The simplicity of the interface can also lead to misconfigurations if users do not fully understand the settings (e.g., incorrect hysteresis or limit values). This may result in equipment cycling excessively or failing to respond as intended.

7. **Limited Environmental Protection** While rugged, the CN2516-R1 does not appear to have high IP ratings (e.g., IP65 or higher). This could be a concern in dusty, wet, or corrosive environments unless additional enclosures are used.

8. **No Built-in Diagnostics** Unlike some advanced controllers, it lacks self-diagnostic features or error codes to quickly identify issues (e.g., sensor failure, relay problems). Troubleshooting may require manual testing with multimeters or other tools.

9. **Single Relay Output** The controller has only one relay output, which may limit its flexibility in systems requiring multiple control actions (e.g., heating and cooling simultaneously). Users may need to add external relays or controllers to manage additional loads.

10. **No Future-Proofing** As industrial automation trends toward IoT, cloud connectivity, and AI-driven control, this controller lacks modern features that could be valuable for scalability or integration with emerging technologies.

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### **Conclusion**

The **Omega CN2516-R1** is a practical and economical choice for applications requiring simple temperature or process limit control without the need for advanced features. It excels in scenarios where cost, ease of use, and basic functionality are prioritized over precision, communication, or scalability. It is well-suited for:

- Small-scale industrial processes (e.g., ovens, dryers, or freezers).

- Educational projects or prototyping.

- Systems where manual override and local control are sufficient.

- Applications where PID control or remote monitoring are unnecessary.

However, it is not ideal for:

- Applications requiring precise temperature control (e.g., pharmaceutical manufacturing, laboratory processes).

- Systems needing integration with larger control networks or data logging.

- Environments with harsh conditions that require high IP ratings or additional protection.

- Projects where multiple control outputs or advanced algorithms are required.

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### **Recommendation**

**Buy the Omega CN2516-R1 if:**

- You need a **low-cost, simple temperature limit controller** for a basic application.

- Your system only requires **on/off control** with no need for PID or advanced features.

- You are working in a **controlled environment** where manual adjustments are acceptable.

- You are on a **tight budget** and do not require communication or logging capabilities.

**Consider an alternative if:**

- You need **PID control** for precise temperature management (e.g., Omega CN76000 series or similar).

- Your application requires **communication protocols** (e.g., Modbus, Ethernet) for integration with other systems (e.g., PLCs, SCADA).

- You need **data logging, remote monitoring, or cloud connectivity** (e.g., Omega OMR400 series or industrial PLCs).

- Your environment is **harsh or requires high IP ratings** (e.g., NEMA 4X enclosures).

- You anticipate **future expansion** that may require additional outputs or advanced features.

For most **basic heating/cooling applications** where simplicity and cost are key, the CN2516-R1 is a solid choice. However, for more demanding or scalable applications, investing in a slightly more advanced controller (even if it costs more) may save time and headaches in the long run.

Details:

Omega CN2516-R1 Temperature/Process Limit Controller 100-240V MISSING SCREW USED, 100-240VAC 50/60Hz 7.5VA, This item is used and in working condition.

part #: cn2516r1 price

  • $419.99

specifications temperaturcontr:

  • brand: Omega
  • mpn: Cn2516-r1
  • part type: Controller Screw

offer temperaturcontr:

  • sold: 0
  • options: Ship-to-home
  • quantity: 1
  • availability: In Stock
  • best offers: True
  • started: February 9, 2026

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  • time: 30 Days
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  • rating: 99.9%
  • # reviews: 8984
  • city: Buffalo, New York

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general temperaturcontr:

  • PLCs HMIs > PLC Peripheral Modules > PLC Temperature Modules
  • condition: Used

shipping temperaturcontr:

  • service: UPS Ground
  • class: Standard
  • carrier: UPS
  • type: Calculated
  • transit: 4-11 Days
  • cost: $20.41
part type: controller screw,
category: business & industrial > plcs hmis > plc peripheral modules > plc temperature modules, sku: 11985889194399623,
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