UL-BW DN50 Ultrasonic Bulk Water Meter
Brand: Surefix
Model: DN50
Type: Ultrasonic Bulk Water Meter
Material: Cast Iron Body, PN16 Flanged
Application: Commercial, Industrial & District Metering
📌 Product Highlights
Non-moving ultrasonic sensors → High reliability & long service life
High Accuracy (Class II) → Unaffected by sand, sediment, or air pockets
Rectifying Device Built-In for improved measurement stability
AMR & IoT Ready → RS485, M-Bus, NB-IoT, GPRS, 4G communication options
IP68 Protection → Suitable for underground / flooded chambers
Long battery life ≥10 years + option for external replaceable battery pack
Low Pressure Loss due to non-mechanical flow measurement
Suitable for U0D0 Installation (Zero straight pipe requirements)
📌 Technical Specifications
General
| Specification | Value |
|---|---|
| Diameter | DN50 |
| Flow Sensor Type | Ultrasonic (Transit-time principle) |
| Material | Cast Iron |
| Flange Standard | ISO 7005-2:1998(E), PN16 |
| Accuracy Class | Class II (MID Approved) |
| Protection Class | IP68 |
| Max Pressure | 1.6 MPa (16 bar) |
| Max Temperature | T50 (Up to 50°C) |
| Communication Options | RS485, M-Bus, NB-IoT, GPRS, 4G |
| Battery Life | ≥10 years |
| Installation Position | Any position (Horizontal / Vertical) |
📌 Flow Performance (DN50)
| Parameter | Value |
|---|---|
| Q4 (Overload Flow) | 50 m³/h |
| Q3 (Permanent Flow) | 40 m³/h |
| Q2 (Transitional Flow) | 1.28 m³/h |
| Q1 (Minimum Flow) | 0.08 m³/h |
| Ratio (Q3/Q1) | R = 500 |
📌 Dimensions – DN50
| Dimension | Size |
|---|---|
| L (Length) | 200 mm |
| H (Height) | 225 mm |
| B (Width) | 165 mm |
| D (Flange OD) | 165 mm |
| D1 (Bolt Circle) | 125 mm |
| Bolt Holes | 4 × M16 |
📌 Features of the Display
Cumulative flow
Instantaneous flow
Temperature indication
Flow direction
Warning & leakage indicators
Battery status
Page up/down buttons
Optical/Infrared communication port
📌 Working Principle (Transit-Time Ultrasonic)
The meter uses dual ultrasonic sensors to measure the difference in transit time between signals traveling with and against the flow.
This time difference is directly proportional to velocity → resulting in high-precision flow calculation without mechanical wear.
📌 Ideal Applications
District Metering Areas (DMA)
Commercial buildings
Water supply networks
Raw water pipelines
Industrial consumption monitoring
Remote metering (AMR/AMI) systems
📌 Certification
ISO 7005-2:1998(E) PN16
TCM142/21-5854
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