{"id":4444,"date":"2026-07-28T14:00:00","date_gmt":"2026-07-28T14:00:00","guid":{"rendered":"https:\/\/jrhmeter.com\/brazil-dn15-rs485-smart-water-meter-project\/"},"modified":"2026-07-28T16:10:52","modified_gmt":"2026-07-28T16:10:52","slug":"projet-de-compteurs-deau-intelligents-dn15-rs485-au-bresil","status":"publish","type":"post","link":"https:\/\/jrhmeter.com\/fr\/brazil-dn15-rs485-smart-water-meter-project\/","title":{"rendered":"2 500 compteurs d'eau intelligents DN15 RS-485 destin\u00e9s au Br\u00e9sil | JRH"},"content":{"rendered":"\n
\"Urban
Residential and commercial buildings in Campinas, S\u00e3o Paulo, Brazil<\/figcaption><\/figure>\n\n\n\n

2,500 DN15 RS-485 Smart Water Meters for a Residential & Commercial Project in Campinas, Brazil<\/h2>\n\n\n\n

A Brazilian water equipment and engineering company needed to replace manual meter reading with a centralized data collection system across its residential and commercial building projects in Campinas, S\u00e3o Paulo. After comparing suppliers, the customer selected JRH Meter<\/a><\/strong> to supply 2,500 DN15 brass-body RS-485 smart water meters, along with communication configuration, sample verification, batch production and export support.<\/p>\n\n\n\n

This Brazil water meter project shows what a full-service RS-485 water meter supplier<\/a> can offer beyond hardware alone \u2014 product selection, communication testing and a water metering solution built around the customer’s own platform, delivered as one coordinated order.<\/p>\n\n\n\n

Project Overview<\/h2>\n\n\n\n
Item<\/th>Project Details<\/th><\/tr><\/thead>
Project location<\/td>Campinas, S\u00e3o Paulo, Brazil<\/td><\/tr>
Customer type<\/td>Water equipment and engineering company<\/td><\/tr>
Application<\/td>Residential and commercial buildings<\/td><\/tr>
Product<\/td>DN15 brass-body photoelectric direct-reading smart water meter<\/td><\/tr>
Quantity<\/td>2,500 units<\/td><\/tr>
Communication<\/td>RS-485<\/td><\/tr>
Meter reading method<\/td>Centralized remote meter reading<\/td><\/tr>
Installation<\/td>Horizontal<\/td><\/tr>
Waterproof rating<\/td>IP68<\/td><\/tr>
Supplier<\/td>JRH Meter<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Why the Customer Moved to RS-485 Remote Reading<\/h2>\n\n\n\n

Manual meter reading requires staff to visit every building, record each reading by hand, and transfer the data into a billing system. Across a project with thousands of meters, this process is slow and prone to delayed readings, duplicated work, and data-entry errors \u2014 problems that scale badly once multiplied across 2,500 installation points.<\/p>\n\n\n\n

The customer needed a way to collect readings from many meters at once and feed them into a single management platform. RS-485 was the natural fit: it’s a wired bus protocol well suited to in-building networks, where multiple meters share one communication line back to a data concentrator. The resulting system architecture was straightforward \u2014<\/p>\n\n\n\n

DN15 RS-485 smart water meters \u2192 RS-485 communication bus \u2192 data concentrator \u2192 customer’s management platform \u2192 centralized remote reading<\/strong><\/p>\n\n\n\n

Because this approach worked with the customer’s existing<\/em> platform, it avoided the cost and disruption of building a new software system from scratch.<\/p>\n\n\n\n

JRH’s Recommended RS-485 Water Meter for Brazil: DN15 Photoelectric Direct-Reading<\/h2>\n\n\n\n
\"JRH
JRH DN15 brass-body RS-485 photoelectric direct-reading smart water meter with communication cable<\/figcaption><\/figure>\n\n\n\n

Based on the installation environment, order volume, and communication requirements, JRH recommended a DN15 brass-body photoelectric direct-reading RS-485 smart water meter<\/strong> \u2014 a design that pairs a standard mechanical register with an electronic reading module, so the meter can be checked visually on-site while still reporting data remotely.<\/p>\n\n\n\n

Photoelectric Direct-Reading vs. Pulse-Output<\/h3>\n\n\n\n

Both technologies report consumption electronically, but they arrive at the number differently \u2014 which matters for a batch this size, where even small discrepancies get multiplied across 2,500 meters.<\/p>\n\n\n\n

<\/th>Photoelectric direct-reading (used in this project)<\/th>Pulse-output<\/th><\/tr><\/thead>
How it works<\/td>Optically reads the actual digits on the mechanical register when data is requested<\/td>Counts pulses generated by a rotating mechanism and accumulates them into a total<\/td><\/tr>
Accuracy risk<\/td>Reflects the register value directly<\/td>Can drift from the true reading if pulses are lost or miscounted<\/td><\/tr>
Power use<\/td>Draws power mainly when queried, supporting stable long-term operation<\/td>Typically requires more continuous signal processing<\/td><\/tr>
Local inspection<\/td>Mechanical register stays readable on-site<\/td>Not always paired with a visible register<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

The brass meter body was selected for durability in building water supply systems, and every unit carries IP68 waterproof protection<\/strong> \u2014 important given that meters would sit in humid utility rooms and meter boxes across multiple buildings with varying conditions.<\/p>\n\n\n\n

Matching Communication to the Customer’s Existing Platform<\/h2>\n\n\n\n
\"RS-485
RS-485 smart water meter wiring diagram \u2014 power and communication connections<\/figcaption><\/figure>\n\n\n\n

Supplying a mechanically sound meter wasn’t enough \u2014 it also had to talk correctly to the customer’s platform, which ran on a Modbus-based structure. Before production began, JRH’s technical team worked through the details with the customer:<\/p>\n\n\n\n