Energy metering and building control for a municipal water-utility headquarters

Project overview

In 2025 Tongwei supplied energy metering and building control for a municipal water-utility headquarters. Floor electricity, classified water, park gas and fresh-air control sit on one system. About twelve floors and the roof report electricity by floor. Work water, domestic water and total water update live, with cumulative, daily and monthly volumes. Park gas joins the same totals. The platform issues a monthly energy report. Fresh-air and supply/exhaust fans on each floor show run, fault and auto/manual status; remote start/stop is available in auto, while manual stays at the local panel. The underground garage is viewed on a plan, and environment change can be reviewed over time. Gateways near each floor and the basement onboard meters and fan circuits.

Main functions delivered

Floor electricity: about 12 floors and the roof, with energy and link status per floor
Classified water: live work, domestic and total water, with cumulative, daily and monthly volumes
Park gas: whole-park gas consumption in the same energy totals
Monthly report: an energy report each month, with day and week views as well
Fresh-air control: each unit shows run, fault and auto/manual; remote start/stop when in auto
Garage environment: fans and environment points on a plan, with change over time

Project list

The list is published without prices or contacts.

Floor and park energy

Category	Item	Model	Qty	Use
Metering	Floor and substation electricity meters	As installed	116 unit	Sub-metering for about 12 floors, the roof, basement and LV distribution
Metering	Classified water meters	As installed	21 unit	Live work, domestic and total water
Metering	Park gas	Gas meter onboarding	Park	Whole-park gas in the monthly energy totals
Onboarding	Per-floor acquisition gateway	BEC6300	Per floor	Onboards electricity and water near each floor and the basement

Fresh-air building control

Category	Item	Model	Qty	Use
Control	Fresh-air and supply/exhaust fans	On-site fan circuits	Per floor	Run, fault and auto/manual; remote start/stop in auto
Control	I/O module	IOC	Per fan circuit	Start/stop output; run, fault and auto/manual feedback

Underground garage and reports

Category	Item	Model	Qty	Use
Environment	Garage environment and fan plan	As installed	Basement level	Fan status and environment change on a plan, with history
Platform	Energy and building-control software	TW-SmartView	1 set	Floor navigation, live monitoring, and month, week and day reports

The problem

Floor electricity, work and domestic water, and park gas are read separately, so accounts only line up at month-end. Fresh-air units need a site visit to see run and fault, and garage environment change has no continuous record.

What we connected

Electricity meters on each floor and the roof
Meters for work water, domestic water and total water
Park gas consumption
Fresh-air and supply/exhaust fans: run, fault, auto/manual and remote start/stop
Underground garage environment points and the monthly energy report

What we did

Connect floor electricity and water meters at the gateway, keeping work, domestic and total water separate
Park gas joins floor water and electricity so the monthly energy report is one set of numbers
Fresh-air circuits on I/O modules: run, fault and auto/manual are separate points; remote start/stop only in auto
Garage points sit on a plan so environment change is stored, not left only on site

How it was rolled out

Confirm floor meters, the three water categories, park gas and fresh-air circuits
Connect electricity and water on several floors first and check daily and monthly figures
Then onboard park gas and per-floor fresh-air remote control, and turn on the monthly report
Bring garage environment points onto the same platform and check the plan against history

Outcome

Floor electricity, classified water and park gas sit on one platform
A monthly energy report replaces month-end manual reconciliation as the only record
Each fresh-air unit's status is visible remotely, and can be controlled remotely in auto
Underground garage environment change can be reviewed over time

If your site is similar

Send floor count, electricity and water meter lists (whether work, domestic and total water are separate), the gas-meter protocol, and whether fresh-air panels already have run, fault and auto/manual terminals.

Products involved

Products used

BEC6300 Smart IoT Gateway BEC6300 SDS / IOC Expansion Modules SDS / IOC Environment and Status Sensors Temp-humidity / leak / smoke / gas / water quality SmartEMS Energy Management Platform SmartEMS AIoT Operations Platform AIoT Data Platform

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A key university in Henan

Metered billing and prohibited-load monitoring

Dorms, shops and the sports hall follow different electricity rules. Meter reading, top-up, month-end bills and cut-off on arrears are reconciled by hand. Prohibited high-power appliances share a circuit with air conditioning, so they are found late and hard to attribute.

Next step

If your site is similar

Send floor count, electricity and water meter lists (whether work, domestic and total water are separate), the gas-meter protocol, and whether fresh-air panels already have run, fault and auto/manual terminals.

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