BARBER COLMAN EMP-454-5 Invensys

( Brand: Barber Colman ), ( Manufacturer Part Number: EMP-454-5 )

Review BARBER COLMAN Invensys Emp4545 Used

The **Barber-Colman EMP-454-5 (Invensys EMP4545)** is a robust and versatile **electronic process controller** designed to deliver precise regulation and monitoring of industrial processes with exceptional reliability and adaptability. Part of Barber-Colman s renowned line of control instrumentation, this unit combines advanced electronic engineering with rugged industrial construction to ensure dependable performance in demanding environments. The EMP-454-5 operates as a **pneumatic-to-electronic converter**, converting standard 3-15 psi pneumatic signals into proportional 4-20 mA DC electronic outputs, making it an ideal interface between legacy pneumatic control systems and modern digital instrumentation. Its modular design allows for easy integration into existing SCADA, DCS, or PLC systems, facilitating seamless data acquisition and control loop management.

This controller features a **highly accurate and stable output**, with a precision of 0.25% of full scale, ensuring consistent and repeatable performance even under fluctuating process conditions. The unit is equipped with a **dual-range input capability**, accommodating both 3-15 psi and 6-30 psi pneumatic signals, which enhances its flexibility across a wide range of applications, including temperature, pressure, flow, and level control. Its **wide operating temperature range** from -20 C to 60 C alongside a robust enclosure rated for IP65 protection, makes it suitable for harsh industrial settings such as manufacturing plants, refineries, and chemical processing facilities where environmental factors like dust, moisture, and vibration can compromise less durable equipment.

The EMP-454-5 is designed with **user-friendly operation** in mind, featuring a **front-panel display** that provides real-time monitoring of input and output signals, along with adjustable calibration and range settings. Its **relay output option** allows for additional control functions, such as alarm signaling or motorized valve actuation, further expanding its utility in complex automation schemes. The controller s **low power consumption** and **long-term stability** contribute to reduced maintenance requirements and extended operational lifespan, making it a cost-effective solution for both new installations and retrofitting older systems. Whether used in **HVAC systems, water treatment plants, or industrial machinery**, the Barber-Colman EMP-454-5 delivers the precision, durability, and adaptability required to maintain optimal process control in a wide array of industrial applications.

### Pros and Cons of Buying a Barber-Colman EMP-454-5 (Invensys EMP4545)

1. **Reliability and Durability** The Barber-Colman EMP-454-5 is a well-established model known for its robust construction and long-term performance. It was designed for industrial applications, meaning it is built to withstand heavy use over extended periods.

2. **Proven Track Record** This motor has been used in various industrial settings for decades, which means there is a wealth of operational data, spare parts availability, and maintenance knowledge. Its reputation for dependability makes it a trusted choice for many facilities.

3. **Compatibility with Legacy Systems** Since this motor is part of the Invensys (now part of Emerson) line, it is compatible with older control systems and automation setups. This makes it a practical choice for facilities that rely on established infrastructure.

4. **Energy Efficiency** Compared to older motors, the EMP-454-5 is relatively energy-efficient for its class, which can help reduce operational costs over time. It is designed to handle continuous duty cycles effectively.

5. **Ease of Maintenance** Barber-Colman motors are known for their straightforward maintenance requirements. Many components are accessible, and spare parts are widely available, making repairs and servicing more manageable.

6. **Wide Availability of Parts** Due to its age and widespread use, finding replacement parts for this motor is relatively easy. Many distributors and aftermarket suppliers stock components for Barber-Colman and Invensys motors.

7. **Cost-Effective for Industrial Use** While the initial purchase price may be moderate, the long-term cost of ownership is often lower due to its durability and efficiency. It is a practical investment for facilities that prioritize reliability over cutting-edge technology.

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1. **Outdated Technology** The EMP-454-5 is an older model, lacking modern features such as digital diagnostics, variable frequency drive (VFD) compatibility, or advanced energy-saving technologies. This can limit its integration with newer control systems.

2. **Limited Energy Savings** Modern motors, especially those with inverter duty ratings or energy-efficient designs, consume significantly less power under partial loads. The EMP-454-5 may not perform as efficiently in applications where variable speed control is required.

3. **Potential for Higher Long-Term Costs** While the motor itself may be durable, the lack of advanced diagnostics can lead to unplanned downtime if issues arise. Predictive maintenance tools in newer motors can help mitigate this risk.

4. **Regulatory Compliance Concerns** Depending on the region, newer motors may need to meet stricter energy efficiency standards (e.g., IE3 or IE4 ratings in the EU). The EMP-454-5 may not comply with the latest regulations, which could pose challenges if the facility is expanding or modernizing.

5. **Training and Expertise** Operators and technicians familiar with modern motor technologies may require additional training to work effectively with this older model. This could impact efficiency and troubleshooting capabilities.

6. **Environmental Impact** Older motors often have lower energy efficiency, which can contribute to higher carbon emissions and increased energy consumption. Replacing it with a newer, more efficient model could align better with sustainability goals.

7. **Limited Warranty and Support** Barber-Colman and Invensys (Emerson) may no longer offer extended warranties or dedicated support for this specific model. Troubleshooting and repairs might rely more on third-party vendors or legacy documentation.

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The Barber-Colman EMP-454-5 (Invensys EMP4545) is a solid choice for facilities that prioritize reliability, durability, and cost-effectiveness in an industrial setting. Its long history of use ensures that spare parts and maintenance knowledge are readily available, making it a practical option for applications where uptime is critical. However, its outdated technology and lack of advanced features may not align with modern efficiency or regulatory requirements. For facilities that can justify the initial investment in a newer, more efficient motor, upgrading could offer long-term savings, better performance, and compliance with current standards.

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- You are operating in a legacy system where compatibility is essential.

- Your facility prioritizes reliability and low maintenance costs over energy efficiency.

- You have a proven need for this specific motor and cannot justify upgrading.

- Spare parts and local support are readily accessible.

- Your facility is expanding or modernizing, and you want to integrate with advanced control systems.

- Energy efficiency and regulatory compliance are priorities.

- You anticipate variable load conditions where a modern motor with VFD compatibility would be beneficial.

- Long-term operational costs (energy savings, reduced downtime) outweigh the initial investment in a newer model.

For most new installations or facilities aiming for sustainability and efficiency, investing in a newer, energy-efficient motor (e.g., IE3 or IE4 rated) would likely be the better long-term decision. However, if the EMP-454-5 is already in use and functioning well, replacing it prematurely may not be cost-effective. Always conduct a thorough cost-benefit analysis based on your specific operational needs.

Details:

All products are guaranteed to be working but may show signs of use if purchasing a used product. Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection. Sells new and surplus product develops channels to purchase such. Call to use a shipping service other than the ones listed.

part #: emp4545 prices

• $59.99-$387.39

specifications automationjack:

• brand: Barber Colman
• mpn: Emp-454-5

payments automationjack:

• credit card: Mastercard
• other
• wallet: Apple-pay

returns automationjack:

• method: Money back
• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

offer automationjack:

• quantity: 1
• availability: In Stock
• sold: 0
• started: February 2, 2026
• options: Ship-to-home

seller automationjack:

• rating: 99.5%
• # reviews: 188487
• city: 1 Millennium Dr, Willingboro, NJ 08046

shipping automationjack:

• cost: $12.90
• service: Standard
• transit: 30-35 Days
• type: Fixed
• class: Standard

general automationjack:

• condition: Used
• Business Industrial > Industrial Automation Motion Controls > Other Automation Equipment

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