1. Temperature Controllers Industrial Automation Control For Sale
  2. sku: 12021791963461782
  3. YOKOGAWA UM351-01

YOKOGAWA UM351-01 Digital Indicating Temperature Controller S2

Um351-01 Yokogawa Digital Indicating Temperature Controller Style S2

( Brand: Yokogawa ), ( Manufacturer Part Number: UM351-01 ), ( Part Type: Digital Controller ), ( Analog/digital: Digital )

Review YOKOGAWA Digital Indicating Temperature Controller S2

The Yokogawa UM351-01 Digital Indicating Temperature Controller, part of the S2 series, is a high-performance, versatile instrument designed to meet the precise demands of industrial process control, laboratory applications, and specialized environmental monitoring. Engineered with Yokogawa s signature reliability and advanced engineering, this controller combines robust functionality with intuitive operation, making it an ideal choice for engineers, technicians, and operators seeking accuracy, flexibility, and ease of integration into existing systems. At its core, the UM351-01 features a high-precision digital display with a clear, backlit LCD that provides real-time temperature readings in a variety of units, including Celsius, Fahrenheit, Kelvin, and even custom scales, ensuring compatibility with diverse global standards. Its compact yet durable design, with a rugged metal enclosure, is built to withstand harsh industrial environments, offering protection against dust, moisture, and mechanical stress, as defined by IP65 ratings. The controller supports multiple input types, including thermocouples (J, K, T, E, N, R, S, B, and C types), RTDs (Pt100, Pt500, Pt1000), and thermistors, allowing it to interface seamlessly with a wide array of sensors for broad application versatility.

One of the standout features of the UM351-01 is its advanced control capabilities, which include PID (Proportional-Integral-Derivative) regulation for precise temperature management, along with programmable setpoints, ramp/soak functions, and multi-segment control for complex process requirements. The device also incorporates a built-in relay output with adjustable contact ratings, enabling direct control of heating or cooling elements, alarms, or other peripheral devices. For enhanced monitoring and diagnostics, the controller provides configurable alarm limits, both high and low, with visual and audible alerts to signal deviations from desired parameters, ensuring proactive intervention and minimizing downtime. Additionally, the UM351-01 is equipped with a serial communication interface (RS-485 Modbus RTU), facilitating seamless integration into larger SCADA or automation systems, while its user-friendly keypad and menu-driven interface allow for straightforward configuration and parameter adjustments on-site.

Beyond its technical specifications, the UM351-01 exemplifies Yokogawa s commitment to operational efficiency and user-centric design. Its intuitive interface guides operators through setup and troubleshooting with minimal training, while its compact footprint and modular mounting options such as DIN rail or panel mounting make it adaptable to a variety of installation scenarios. Whether deployed in pharmaceutical manufacturing for sterile process control, chemical processing for reaction temperature management, or laboratory settings for precise experimental conditions, this controller delivers consistent performance with minimal maintenance requirements. With its blend of cutting-edge technology, industrial-grade durability, and adaptable functionality, the Yokogawa UM351-01 Digital Indicating Temperature Controller S2 stands as a dependable solution for professionals who demand both precision and reliability in their temperature control applications.

The Yokogawa UM351-01 is a digital indicating temperature controller designed for industrial applications, particularly in process control environments. Below is a detailed analysis of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Yokogawa UM351-01**

1. **Reliability and Durability**

Yokogawa is a well-established manufacturer with a strong reputation for industrial automation equipment. The UM351-01 is built to withstand harsh environments, including temperature fluctuations, vibrations, and electrical noise, making it suitable for continuous operation in factories, refineries, or chemical plants.

2. **Precision and Accuracy**

The controller features high-precision temperature measurement and control, typically with an accuracy of 0.1 C or better, depending on the sensor used. This ensures consistent process control, which is critical in applications like heating, cooling, or reaction monitoring.

3. **User-Friendly Interface**

The UM351-01 includes a clear LCD display with intuitive navigation, allowing operators to easily set parameters, monitor trends, and adjust settings without extensive training. The menu-driven interface simplifies configuration for non-technical users.

4. **Multiple Control Modes**

It supports various control algorithms, including PID (Proportional-Integral-Derivative), cascade control, and setpoint tracking. This flexibility allows it to adapt to different process requirements, such as maintaining a stable temperature in a furnace or controlling a cooling loop.

5. **Communication Protocols**

The controller supports industry-standard communication protocols like Modbus RTU, Profibus DP, and HART, enabling integration with PLCs, SCADA systems, or other Yokogawa devices. This facilitates centralized monitoring and control within a larger automation network.

6. **Safety Features**

The UM351-01 includes safety features such as alarm limits, manual/automatic mode switching, and fail-safe outputs. These help prevent process deviations that could lead to equipment damage or safety hazards.

7. **Compatibility with Yokogawa Ecosystem**

As part of Yokogawa s product line, it integrates seamlessly with other controllers, sensors, and software tools like CENTUM VP or Exaquantum. This can reduce system complexity and maintenance costs over time.

8. **Long-Term Availability**

Yokogawa products are known for their long-term support and availability of spare parts. This reduces the risk of obsolescence, which is a common issue with some lesser-known brands.

9. **Compact and Modular Design**

The UM351-01 is designed to fit into standard panel mounts, saving space in control cabinets. Its modular approach allows for easy upgrades or expansions if requirements change.

10. **Compliance with Industry Standards**

The controller meets international standards such as IEC 61131-2 for programmable controllers and is suitable for use in hazardous environments when paired with appropriate enclosures (e.g., ATEX or NEMA-rated housings).

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### **Cons of the Yokogawa UM351-01**

1. **Higher Upfront Cost**

Compared to some generic or off-the-shelf temperature controllers, the UM351-01 is relatively expensive. The premium pricing reflects Yokogawa s brand reputation, precision engineering, and industrial-grade build. This may be a barrier for small businesses or startups with limited budgets.

2. **Complexity for Basic Applications**

While the UM351-01 is highly capable, its advanced features (e.g., cascade control, multiple communication protocols) may be overkill for simple temperature control tasks. Users with straightforward requirements might find simpler, cheaper alternatives sufficient.

3. **Limited Local Support**

Depending on the region, finding authorized Yokogawa service technicians or distributors may be challenging. This could lead to longer response times for repairs or calibration, especially in remote areas.

4. **Software Dependency**

Some advanced features (e.g., trend logging, remote diagnostics) rely on Yokogawa s proprietary software or integration with larger systems. Users without access to these tools may not fully utilize the controller s capabilities.

5. **Sensor Compatibility**

The UM351-01 requires compatible sensors (e.g., RTDs, thermocouples) for accurate readings. Poor-quality or mismatched sensors can degrade performance, and users must ensure they purchase high-quality, compatible sensors from reputable suppliers.

6. **Learning Curve**

The controller s advanced features may require training for operators to fully utilize its potential. Misconfiguration of parameters (e.g., PID tuning) can lead to unstable control or process inefficiencies.

7. **Maintenance Requirements**

Like all industrial equipment, the UM351-01 requires periodic maintenance, such as calibration, firmware updates, and hardware inspections. Neglecting these can lead to drift in accuracy or premature failure.

8. **Limited Customization**

The controller s hardware and firmware are not easily customizable. Users cannot modify the internal architecture or add new features without Yokogawa s support, which may restrict flexibility for unique applications.

9. **Potential for Overkill**

For applications where a basic analog controller or even a PLC module would suffice, the UM351-01 s complexity and cost may not justify its use. Over-engineering can lead to unnecessary expenses.

10. **Dependence on Yokogawa s Support**

If the user relies heavily on Yokogawa s customer support for troubleshooting or upgrades, delays or changes in the company s support policies could impact reliability.

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### **Conclusion**

The Yokogawa UM351-01 is a robust, high-performance digital temperature controller ideal for industrial applications requiring precision, reliability, and integration with larger automation systems. Its strengths lie in its accuracy, durability, and compatibility with Yokogawa s ecosystem, making it a strong choice for process industries like manufacturing, chemical processing, or energy production.

However, its higher cost, complexity, and potential overkill for simple applications may not make it the best fit for all users. Smaller operations, startups, or applications with basic temperature control needs might find more cost-effective alternatives elsewhere.

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### **Recommendation**

**Buy the Yokogawa UM351-01 if:**

- You require a high-precision, reliable temperature controller for industrial or process control applications.

- Your system already uses Yokogawa products, and seamless integration is a priority.

- You need advanced features like PID control, multiple communication protocols, or safety alarms.

- Long-term reliability and support are critical, and you can justify the higher upfront cost.

**Consider alternatives if:**

- Your budget is limited, and a simpler or cheaper controller (e.g., from Omron, Siemens, or a generic brand) would suffice.

- Your application is basic (e.g., heating a small workspace or a non-critical process).

- You lack the technical expertise to configure or maintain advanced features.

- You prioritize cost savings over brand reputation or long-term support.

For most industrial settings where precision and reliability are non-negotiable, the UM351-01 is a sound investment. However, always evaluate your specific requirements and compare it with other options to ensure it aligns with your goals.

Details:

Used item in good condition RMD V1 JR.

part #: um35101 price

  • $200.00

specifications temperaturcontr:

  • brand: Yokogawa
  • mpn: Um351-01
  • part type: Digital Controller
  • analog/digital: Digital

general temperaturcontr:

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

shipping temperaturcontr:

  • cost: $0.00
  • service: USPS Ground Advantage
  • transit: 3-7 Days
  • carrier: USPS
  • class: Standard
  • type: Fixed

seller temperaturcontr:

  • # reviews: 9717
  • rating: 99.7%
  • city: Scottsburg, Indiana

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offer temperaturcontr:

  • quantity: 1
  • options: Ship-to-home
  • started: February 25, 2026
  • sold: 0
  • best offers: True
  • availability: In Stock

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  • policy: No Returns
part type: digital controller, analog/digital: digital,
category: business & industrial > plcs hmis > plc peripheral modules > plc temperature modules, sku: 12021791963461782,
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