The ECBS003 large diameter photoelectric direct reading water meter is designed for centralized water metering and remote utility monitoring applications in commercial buildings, industrial facilities, municipal water systems, and large-scale pipeline networks. Supporting RS485 and M-BUS communication interfaces, the meter enables stable remote meter reading and centralized data collection for local deployment utility management systems.
Adopts photoelectric encoded direct-reading technology for stable and accurate meter data acquisition.
Suitable for medium and large pipe diameter water metering applications from DN50 to DN300.
Supports RS485 and M-BUS communication interfaces for centralized meter reading systems.
Dry dial structure maintains long-term readability and operational reliability.
Non-contact sensing technology does not affect the metering mechanism or measurement accuracy.
Power is consumed only during communication and data reading operations.
Supports CJ/T188-2004, DL/T645-1997, and Modbus communication protocols.
Can be integrated into centralized utility metering and building monitoring systems.
| Model | ECBS003 |
| Maximum Permissible Error | ±5% (Q1-Q2) ±2% (Q2-Q4) |
| Communication Interface | M-BUS / RS485 |
| Communication Protocol | CJ/T188-2004 / DL/T645-1997 / Modbus |
| Cold Water Temperature | 0°C ~ 30°C |
| Hot Water Temperature | 0°C ~ 90°C |
| Working Pressure | ≤1MPa |
| Pipe Diameter | 50mm ~ 300mm |
| Communication Baud Rate | 1200 / 2400 / 4800 / 9600bps |
| Communication Distance | ≤300m |
| Operating Current | M-BUS: 1.0–1.3mA RS485: 0.6–0.8mA |
| Operating Voltage | DC36V (M-BUS) DC12–24V (RS485) |
| Minimum Data Storage Time | Unlimited |
| Electromechanical Conversion Error | ≤ ±1 Minimum Conversion Scale Value |
| Valve Control | No |
| Installation Direction | Install horizontally with dial facing upward. Vertical meters should be installed vertically. |
| Flow Direction | Installation direction must follow the water flow arrow indication. |
| Pipeline Preparation | Flush the pipeline before installation to remove debris. |
| Installation Environment | Install in a dry environment with convenient maintenance access. |
| Recommended Installation | Installation inside a dedicated water meter box is recommended. |
| Valve Requirement | Install valves before and after the meter for maintenance convenience. |
| M-BUS Wiring | Standard two-core cable without polarity. |
| RS485 Wiring | Standard four-core cable with separate power and signal transmission cores. |
| M-BUS Cable Type | RVSP 2×1.0 mm² Shielded Twisted Pair Cable |
| RS485 Cable Type | RVSP 4×1.0 mm² Shielded Twisted Pair Cable |
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