Emerson Process Management 430 DO instruction manual Section Maintenance, Do not Remove IT

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MODEL 430 DO

SECTION 3.0

 

MAINTENANCE

SECTION 3.0

MAINTENANCE

3.1GENERAL. Sensor maintenance consists of keep- ing the sensor clean, recharging the sensor and replacing the membrane. The sensor should be cleaned with clean water and a soft cloth. Make sure the membrane area is kept clean and free of any accumulation of dirt, algae, fungus, hair, etc.

3.2RECHARGING THE SENSOR. A recharge kit (Rosemount analytical P/N 2002473) is required to service the sensor.

Recharge the sensor as follows (see Figure 5-2):

1.Remove the sensor from its mounting.

2.Loosen the vent screw approximately 1-1/2 turns.

DO NOT REMOVE IT

3.Unscrew and remove the reservoir retainer from the base. Use a strap wrench if the retainer is to tight to remove by hand.

4.Pull the reservoir housing assembly from the base WITHOUT rotating it. Hold sensor in a base-up position to keep electrolyte from spilling out. If the reservoir housing assembly is locked onto the base, use a screwdriver at the parting lines to dis- lodge the base from the reservoir housing assem- bly. Do not damage the mating surfaces with the screwdriver while separating the base from the reservoir housing assembly.

CAUTION

The electrolyte (KCI) is a corrosive liquid which could damage some materials and may irritate the skin or eyes. If the electrolyte comes in contact with the skin or eyes, wash immediately with clean water.

5.Discard the O-ring, electrolyte, and reservoir housing assembly.

6.Prepare the electrolyte solution as follows:

a.Pour electrolyte crystals into a beaker containing 100 milliliters of distilled or demineralizer water. Stir until crystals are dissolved.

b.If it is desired to forego the stabilization period of two hours, a dilution of the electrolyte may be done by adding NaOH or KOH to adjust the pH of the solution to 12 or greater.

c.The unused electrolyte solution can be saved for future use. The pH should be rechecked prior to use if the solution has been stored.

7.Fill the new reservoir housing assembly with elec- trolyte to the hole in the inner wall of the reservoir (approximately 3/4 full). Tap the reservoir lightly to remove any air bubbles.

8.Rinse all parts of the base in distilled or deionized water. To remove silver chloride from the silver anode, use a fine grit sandpaper or a pencil eras- er and rub lightly until the coating is removed. Rinse the silver anode in distilled water until all traces of grit are removed.

9.Lightly lubricate the O-rings with O-ring lube and install the O-ring in the groove of the base.

10.Hold the reservoir housing assembly in an upright position and carefully slide the base into the reser- voir housing assembly, making sure the tip of the post enters the membrane retainer. Some elec- trolyte should seep out through the vent screw while the reservoir housing assembly is being pushed onto the base. Do not grip the pressure compensator while pushing the reservoir housing assembly onto the base.

CAUTION

In the following step, do not push the reser- voir housing assembly onto the base too fast. The orifices in the base vent screw are very small and a quick surge of pressure could damage the membrane. A stream of elec- trolyte solution could be forced through the vent screw while the reservoir housing assembly is being installed.

11.Push the reservoir housing assembly onto the base until the threads of the base and the reser- voir retainer can be engaged. After the threads are engaged, turn the reservoir retainer until it is fin- ger-tight. Caution, over finger-tight may damage membrane or base post.

NOTE

Do not touch or apply pressure to the mem- brane.

12.Tighten the vent screw. Rinse the sensor with clean water and dry with a lint-free cloth or towel.

13.The sensor is now ready for use.

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Contents Dissolved Oxygen Sensor Essential Instructions Hazardous Area InstallationModel Dissolved Oxygen Table of ContentsList of Tables Table of Contents List of FiguresFeatures and Applications Section General Description and SpecificationsWetted Materials Housing PVC Membrane Teflon Specifications Process ConnectionTemperature Compensation 40043019Optional Mounting Bracket 40043018Model Electrode Connections Sensor Lead Model 1181DO Section Installation40043001 Codes and 01 and 02 Flow Through Installation40043002 Code 03 Sensor DimensionsPage Do not Remove IT Section MaintenanceTemperature Resistance Chart Section Troubleshooting40045052 Section Parts ListsPart Number Description Qty 4004301640043015 40043017 Section Return of Material NON Warranty REPAIR. Contact Factory For AuthorizationASIA-PACIFIC Americas HeadquartersEUROPE, Middle EAST, and Africa Additional Sales OfficesSensor or Circuit Board only Return of Materials RequestPage Warranty Specifications subject to change without notice

430 DO specifications

Emerson Process Management has long been a pioneer in the field of automation and instrumentation, and one of its standout products is the 430 DO, a digital output module widely used in various industrial applications. The 430 DO is engineered to facilitate increased efficiency, reliability, and flexibility in process management systems.

One of the main features of the 430 DO is its ability to support a range of output configurations. It typically offers multiple channels, allowing operators to control various field devices simultaneously. This high-density output capability makes it ideal for applications where space and resources are constrained.

The module utilizes advanced digital signal processing technology, which enhances its performance and responsiveness. This technology ensures that the 430 DO can handle robust signal processing, leading to improved speed and accuracy in control processes. Moreover, the module complies with the industry standards for electromagnetic compatibility (EMC), ensuring minimal interference and enhanced operational integrity in diverse environments.

In terms of connectivity, the 430 DO is designed to integrate seamlessly within Emerson's DeltaV™ control system, enabling quick deployment and straightforward configuration. The use of an intuitive interface simplifies setup and allows operators to quickly adapt to changing process requirements. Additionally, the module supports extensive communication protocols, which facilitates interoperability with various devices and systems, enhancing overall operational versatility.

Another notable characteristic of the 430 DO is its built-in diagnostic capabilities. Real-time monitoring offers insights into the status and health of the outputs, allowing for proactive maintenance actions to be taken before potential failures occur. This feature not only enhances operational reliability but also contributes to reduced downtime and maintenance costs.

Safety is paramount in any industrial environment, and the 430 DO module incorporates safety features that comply with international safety standards. These features enable fail-safe operations, ensuring that process integrity is maintained even in the event of an unexpected shutdown or fault.

In summary, Emerson Process Management's 430 DO digital output module stands out for its versatile output configurations, advanced signal processing technologies, seamless integration with control systems, built-in diagnostics, and emphasis on safety. Its design reflects Emerson's commitment to providing tools that enhance performance and streamline operations in the ever-evolving landscape of industrial automation. With the 430 DO, organizations can expect improved efficiency and reliability in their process management systems.
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