Application
Residential metering covers every point where a household, an apartment unit or a dormitory room has to be billed for the water it actually uses. Chenshuo supplies DN15-DN25 STS prepaid meters for token-based billing, DN15-DN65 multi-jet mechanical meters for conventional household metering, and DN15-DN40 ultrasonic meters where a low starting flow and no moving parts are what the project calls for.
Typical sizes: DN15-DN40
The same meter is bought for different reasons depending on who is signing. These are the four roles that come up most often on this type of project.
One model per unit count, one delivery schedule, and meters that installation crews can fit without sorting on site.
Taking over billing in occupied buildings, where arrears and manual reading rounds are the two costs that hurt.
Household metering programmes and replacement rounds that run block by block over a fixed budget.
High tenant turnover, so per-room control matters more than long-term accuracy drift.
Four things that most often settle whether a project goes ahead with us.
STS keypad meters are recharged by token. There is no monthly reading round and no unpaid bill to chase, which is usually the reason a landlord switches to prepaid in the first place.
DN15-DN25 covers household connections. Keeping one family across a block means spares are interchangeable and maintenance staff only learn one meter.
Meters can be numbered and labelled per apartment before they leave the factory, so the installation crew is not sorting serial numbers in a stairwell.
Prepaid meters close the valve when credit runs out. Without valve control, prepayment is only a notice, not a cutoff.
These are the models most often specified for this application. Send us the pipe size and flow range and we will confirm which one fits.
DN15–DN25
XT815-M
20-digit encrypted token recharge with a built-in ball valve — water revenue collected before it is delivered.
DN15–DN25
XT815-U
Static ultrasonic measurement inside an STS prepayment meter — no moving parts to wear, no accuracy drift to argue about.
DN15–DN40
CSW-UWM15-40
Static ultrasonic metering for DN15–DN40 — R250 range, no moving parts, and 24 months of history stored on board.
DN15–DN65
LXS-15E ~ LXS-65E series
The lowest-cost way to meter a household — multi-jet accuracy, no power supply, and six housing options to match the budget.
This group covers several distinct jobs. Find the one closest to yours.
A block is normally metered at two points: a bulk meter at the building inlet that the utility bills, and one household meter per apartment that the landlord or manager bills. The two rarely agree, because the inlet meter also sees common supply, leakage and the difference in reading dates. Fitting a household meter per unit is what makes the split defensible to tenants.
Sub-metering splits one supply contract into individual bills. It is used where a landlord buys water in bulk and resells it to tenants, and where a property manager needs to charge each unit for what it used rather than dividing the total by unit count. The practical requirement is a meter per unit that tenants can see and accept.
Prepaid suits buildings where tenants change often and collecting afterwards is unreliable. The tenant buys credit, the meter counts down, and the valve closes at zero. For dormitories and staff housing this also removes the shared-bill argument, because each room pays for its own consumption.
Tall buildings are usually metered by zone as well as by unit, because pressure zones and risers do not follow the apartment layout. Retrofitting an occupied tower is a different job from fitting out a new one: the water cannot be off for long, and the existing meter positions and pipe centres constrain what will fit.
Replacement rounds run on a different logic from new build. The meters are going into occupied homes, the quantities are large, and the schedule is set by how fast crews can swap a unit. What usually decides the supplier is whether the whole round arrives on the agreed dates and whether the meters are labelled per address.
Meters from this application group as they go in on real jobs.
DN15 and DN20 cover most household connections; DN25 is used where the riser or the local practice calls for it. Confirm against the pipe size on site before ordering.
Prepaid if collecting afterwards is the problem you are solving. Postpaid mechanical or ultrasonic if you already have a working reading and billing round.
Yes. Send the unit list with the order and the meters are numbered and labelled before dispatch.
Contact our team for bulk pricing, project quotations and technical support.