The Sensus "Dynamic" series register is a crucial component of a meter head, designed for accurate measurement and easy maintenance. This document outlines the procedures for disassembling and assembling the meter head, providing a detailed view of its internal components and their interrelationships.
Function Description
The primary function of the Sensus "Dynamic" series register is to record and display measurement data from a meter. It integrates with various components of the meter head to ensure precise data acquisition and reliable operation. The register assembly, comprising the register itself, a center ring, and a head ring, forms the core of the measurement display unit. The design allows for the secure housing of the register and its protection from external elements, while also facilitating access for maintenance and replacement.
Important Technical Specifications
The device manual provides an exploded view of the register and its surrounding components, indicating a modular design. Key components include:
- Register (3): The central unit responsible for displaying measurement data.
- Centre ring (4): A component that houses the register and connects it to the head ring.
- Head ring (2): The outermost ring of the register assembly, which interfaces with the sliding ring and the meter body.
- Sliding ring (5): A crucial component for securing the register assembly to the head flange and allowing for rotational adjustment.
- Securing pin (32): A two-part pin (inner and outer) designed to lock the sliding ring in place, preventing unauthorized tampering or accidental dislodgement.
- Head flange (17, 25): The part of the meter body to which the register assembly is attached. The manual refers to both (17) and (25) as "Head flange," suggesting different aspects or parts of the same component.
- Serial number plate (6): A plate for displaying the unique serial number of the meter, inserted into the sliding ring.
- Positioning ring (9): A ring that helps in the correct alignment of the register assembly.
The design emphasizes secure fastening mechanisms, such as the securing pin, and precise alignment features, like the noses inside the sliding ring fitting into the nut of the holders of the positioning ring. The use of a small screwdriver (Ø 1mm) for the inner pin of the securing pin indicates a specific tool requirement for maintenance.
Usage Features
The Sensus "Dynamic" series register is designed for straightforward integration into the meter head. Its modular construction allows for relatively easy assembly and disassembly, which is beneficial for field maintenance or replacement.
- Secure Attachment: The sliding ring and securing pin mechanism ensures that the register assembly is firmly attached to the meter body, preventing movement or detachment during operation.
- Rotational Adjustment: The sliding ring allows for rotation against the head ring, which might be used for alignment or specific operational settings.
- Clear Indexing: The position of the register index must correspond with the printed index on the center ring, ensuring accurate readings and proper orientation.
- Serial Number Visibility: The serial number plate is integrated into the sliding ring, making the meter's identification easily accessible.
- Sealing Capability: The design includes provisions for a meter seal at the sliding ring, indicating a feature to prevent tampering and ensure the integrity of the measurement. The "triangle hole at the sliding ring has to correspond to the triangle hole at the sealing hole in the head ring" further emphasizes the sealing and anti-tampering features.
Maintenance Features
The manual highlights several features that simplify the maintenance and replacement of the register:
- Disassembly Procedure: The step-by-step instructions for disassembling the meter head are clear and concise, detailing how to remove the seal, securing pin, and various rings. This systematic approach minimizes the risk of damage during maintenance.
- Securing Pin Reusability: The securing pin, consisting of an inner and outer part, is designed to be reusable. This reduces the need for replacement parts during routine maintenance, contributing to cost-effectiveness. The specific method for removing the inner pin with a small screwdriver (Ø 1mm) is crucial for its reusability.
- Modular Replacement: The ability to remove the register (3) with the center ring (4) from the head ring (2), and then separate the register from the center ring by bending the brackets, indicates that individual components can be replaced if damaged, rather than the entire assembly.
- Assembly Procedure: The detailed assembly instructions, including notes on aligning the register index with the printed index on the center ring and positioning the hinge of the lid, ensure correct reassembly and functionality. The instruction to "turn to stop the Sliding ring (5) clockwise against the head ring (2)" provides a clear endpoint for securing the assembly.
- Sealing and Tamper-Proofing: The final step of "Set the meter seal" after assembly reinforces the importance of maintaining the integrity of the meter against tampering. The alignment of triangle holes for sealing further supports this.
In summary, the Sensus "Dynamic" series register is engineered for reliable performance, ease of installation, and straightforward maintenance. Its modular design, secure fastening mechanisms, and clear assembly/disassembly procedures make it a practical component for various metering applications, emphasizing accuracy, durability, and tamper resistance.
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