Ultrasonic Water Meter CSW
Static ultrasonic metering for DN15–DN40 — R250 range, no moving parts, and 24 months of history stored on board.
Product overview
The CSW ultrasonic water meter measures flow by comparing the travel time of sound pulses moving with and against the water. There is no impeller, no gear train and no obstruction in the flow path, so the meter keeps its accuracy in service and tolerates dirty water that would foul a mechanical meter.
It is the standard choice for apartment blocks, dormitories and property sub-metering projects where the buyer wants measured consumption rather than estimated consumption, and wants it without sending a reader into every unit.
Key benefits
Practical advantages for distributors, contractors and project buyers selecting a water meter for daily metering work.
No moving parts, nothing in the flow
Ultrasonic measurement with no mechanical wear and nothing for debris to catch on
What it means for youAccuracy holds for the life of the meter instead of drifting, so revenue does not quietly leak away with age.
Low starting flow
Dripping taps and slow night-time leakage are measured instead of passing through unregistered
What it means for youWater you already deliver gets billed — the low-flow share of your non-revenue water shrinks.
Wide measuring range
Up to R250 on the household range, covering trickle and peak on one meter
What it means for youOne specification covers the whole household range — fewer variants to stock and to specify.
On-board history
The last 24 months of records are stored on the meter itself
What it means for youA disputed bill is settled from the meter’s own record rather than from an argument.
Alarms before they become billing problems
Warnings for sensor failure, over-range flow and low battery
What it means for youFaults surface while they are still cheap to fix, not after a quarter of unusable data.
Long battery life
Ultra-low-power design gives more than six years from a single lithium battery
What it means for youNo battery replacement round for six years — on a large fleet that is the difference between a plan and a project.
Flexible connectivity
Optical, M-Bus, RS-485 and wireless interfaces, with LoRa and NB-IoT options
What it means for youIt talks to the system you already run — no gateway swap and no proprietary lock-in.
Installs either way up
Horizontal or vertical installation
What it means for youIt fits the pipe you have, with no rework when the riser or the chamber dictates the position.
Technical specifications
Check the product parameters used for model selection, quotation review and project documentation.
| Parameter | Value |
|---|---|
| Model | CSW-UWM15-40 (V1 and V2 variants) |
| Metering principle | Ultrasonic time-difference, static |
| Nominal sizes | DN15 / DN20 / DN25 / DN32 / DN40 |
| Measurement range | Up to R250 |
| Accuracy class | Class 2 |
| Battery | Single lithium battery, over 6 years |
| Data storage | 24 months of historical records |
| Communication | Optical, M-BUS, RS-485; LoRa and NB-IoT options |
| Alarms | Sensor failure, over-range flow, low voltage |
| Working pressure | ≤ 1.6 MPa |
| Water temperature | 0.1–50°C cold water |
| Pressure loss | ≤ 0.15 MPa at Q3 |
| Ingress protection | IP68 |
| Applicable standard | GB/T 778; JJG 162; CJ/T 434-2013 |
Materials and dimensions
Review the main component materials and dimensions before confirming water conditions, installation space and packaging requirements.
| Component | Material |
|---|---|
| Display | LCD, sealed |
| Reflectors / flow path | No internal obstruction or moving parts |
Where this model is installed
Where this model is already doing the job. Each application page carries the parameters buyers check before they specify.
Applications
Where this model is specified, and who is usually the buyer.
Apartment block metering
Per-apartment measurement with remote reading and no access to the unit needed.
Typical buyer: Developer, property managerProperty sub-metering
Splitting a building's main meter into tenant-level consumption.
Typical buyer: Building operator, facilities managerDormitory and staff housing
Per-room measurement where intermittent use would wear a mechanical meter.
Typical buyer: University, factory HR housingHigh-rise retrofit
Replacing mechanical meters where accuracy drift has become a billing problem.
Typical buyer: Utility retrofit contractorProduct FAQ
Answers to common questions about product selection, options and quotation.
How long does the battery last?
Can it be read remotely?
What happens if the battery runs flat?
Is it approved for potable water billing?
Get a quote for Ultrasonic Water Meter CSW
Tell us the sizes and quantities you need and we will come back with pricing, lead time and the data sheet.
- Factory-direct pricing with no trading company in between
- OEM branding, dial customisation and private labelling available
- Samples available for evaluation before a full order
- Technical support on sizing, installation and system integration
Prefer to talk to us directly?
- Tel: +86 15615396327
- Email: jiang@sd-chenshuo.com