MODEL 228

USE OF INSERTION - RETRACTION ASSEMBLIES

MECHANICAL RETRACTION ASSEMBLY (PN 23311-00)

INSTALLATION

1.Thread the sensor cable through the tube into the junction box. Screw the sensor into the tube. Hand tighten the sensor an additional half turn once the gas- ket is seated. See Figure 15.

2.Terminate the sensor wiring in the junction box. See Figure 13 for wiring details.

3.Using a 1/2 in. (13 mm) socket wrench, retract the sensor into the retraction chamber.

4.Install the assembly on the 1-1/2 in. NPT full port ball valve mounted in the process line or vessel.

5.Tighten the union nut.

6.Open the ball valve and check for leaks.

7.Using a 1/2 in. (13 mm) socket wrench, insert the sensor into the process line or vessel.

8.Position the sensor at least 1/2 in. (13 mm) away from any wall of the vessel or pipe. Set the travel stop collar “A” next to the nut housing.

WARNING

Do not loosen cap screws or collar when pressurized.

RETRACTION

1.Make certain that the system pressure is less than 295 psig (2135 kPa abs) before retracting the sensor.

2.Retract the sensor using a 1/2 in. (13 mm) socket wrench. When the sensor clears the ball valve, close the valve.

WARNING

Retraction chamber contents may be under pressure.

3.Drain the retraction chamber contents using the 1/8 in. flush ports.

4.Loosen the 3 in. hex union nut, and remove the retraction stop collar and orange clamp top. Remove the sensor and tube assembly.

5.Replace the 3 in. hex nut O-ring. Place the sen- sor and tube assembly back in the retraction assembly. Replace the retraction stop collar about 1/2 in. in front of the clamp. Tighten the clamp screws, retraction stop collar, and 3-in. hex union nut. Verify that the 1/8 in. flush ports are closed.

NOTE

With the ball valve fully closed and the retraction chamber 1/8 in. flush ports open, some residual

MILLIMETER

INCH

FIGURE 15. Mechanical Retraction Assembly

process fluid may leak from the 3 in. hex union nut female ACME threads. This leakage is normal and to be expected.

6.Before opening the ball valve, make sure that the process pressure is less than 295 psig (2135 kPa abs). Open the valve, check for leaks, and insert sensor into the process.

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Emerson 228 specifications Mechanical Retraction Assembly PN
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228 specifications

The Emerson 228 is a cutting-edge industrial controller designed for demanding applications across various sectors, including manufacturing, oil and gas, and process automation. Known for its robust performance and reliability, the Emerson 228 integrates advanced technologies to streamline operations and enhance productivity.

One of the standout features of the Emerson 228 is its modular architecture. This design allows users to customize the controller according to their specific needs by adding or removing modules as required. This flexibility is vital for adapting to changing production environments and scaling operations efficiently.

The Emerson 228 also boasts an intuitive user interface, which simplifies the configuration and monitoring processes. Operators can easily visualize processes through graphical displays, making it possible to diagnose issues quickly and respond in real time. This enhanced visibility significantly reduces downtime and improves overall operational efficiency.

Connectivity is another key characteristic of the Emerson 228. It supports a wide range of communication protocols, including Ethernet/IP, Modbus, and Profibus. This allows seamless integration with existing infrastructure and enables the controller to communicate with various devices, sensors, and other controllers, facilitating a holistic approach to automation.

In terms of performance, the Emerson 228 is designed to handle complex algorithms and data processing tasks with ease. It is equipped with advanced processing capabilities that enable high-speed data collection and analysis. This is particularly important in environments where rapid decision-making is critical to maintain production efficiency and safety.

The Emerson 228 is also built with durability in mind. It features robust construction and is rated for extreme temperatures and harsh conditions, ensuring reliable operation even in challenging environments. This reliability translates to lower maintenance costs and longer service life, making the Emerson 228 a cost-effective solution for businesses.

Energy efficiency is a focal point of the Emerson 228, featuring technologies that optimize power consumption without compromising system performance. This not only reduces operational costs but also supports sustainability initiatives within organizations, contributing to a greener industrial footprint.

In summary, the Emerson 228 stands out as a versatile and powerful industrial controller. Its modular design, user-friendly interface, extensive connectivity options, high processing performance, durability, and energy efficiency make it an ideal choice for modern industrial applications. Organizations looking to enhance their automation capabilities will find the Emerson 228 to be a reliable and effective solution.
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