Current position > News detail
『Domestic Flow Meter: Residential Utility Submetering Main Volumetric Dials』Related information(flow rotameter|digital flow meter|balo meter|hydraulic flow meter|volumetric meter|positive displacement meter|pitot tube flow meter|displacement meter|cfm meter|variable area flow meter|inline flow meter|differential pressure flow meter|calibrated flow meter|velocity meter|paddle wheel flow meter|oval gear flow meter|anemometer hvac|multiphase flow meter|doppler flow meter|thorpe tube flowmeter|heat flow meter)
Domestic Flow Meter: Residential Utility Submetering Main Volumetric Dials
Quick Answer: A domestic flow meter with a main volumetric dial gives a direct mechanical reading for unit level water billing. For residential utility submetering, specify DN15 or DN20, a minimum flow of 0.03 cubic meters per hour, and a pulse or M-Bus output for remote data collection. Silver Automation Instruments supplies these meters for apartment projects in Southeast Asia, the Middle East, Latin America, Africa, and Oceania.
What the Main Volumetric Dial Shows on a Residential Meter
The main volumetric dial records total water volume in cubic meters. A large set of digits on the register shows lifetime consumption. Smaller dials show fractions of a cubic meter for leak checks and low flow testing. In practice, a building manager reads the main dial once a month and subtracts the previous reading from the new one.
For apartment submetering, the main volumetric dial is the billing basis. The totalizer is mechanical and does not need a battery. That matters in rental buildings where power interruptions are common in Nigeria, Pakistan, and the Philippines.
Common Specifications for Residential Utility Submetering
Most residential cold water submetering jobs fall into this range. Connection size DN15 or DN20. Flow range 0.03 to 3 cubic meters per hour. Pressure rating 10 bar. Water temperature 5 to 50 degrees Celsius. Accuracy class B or R160 under ISO 4064. Outputs include 1 liter per pulse reed switch, 10 liter per pulse, M-Bus, RS485 Modbus RTU, or 4-20 mA.
Silver Instruments can match the pulse constant to your data logger or billing software. In many cases, the pulse output is enough for remote reading. If the building management system needs two way communication, we select M-Bus or Modbus RTU.
Why Utilities and Property Groups Use Submetering
Submetering moves billing from one bulk meter to individual unit meters. A property group in Dubai with 80 serviced apartments reduced billing disputes because each tenant paid for actual consumption. A utility contractor in Chile installed volumetric submeters in a condominium with 200 units. The main volumetric dial gave tenants a visible number they could trust.
Silver Instruments sees this pattern often. Engineers want a meter that is simple to read on site, but also has a pulse output for a building management system. That dual requirement is why the main volumetric dial still matters in new builds and retrofits.
Recommended Meter Pairings for Domestic Flow Meter Projects
For DN15 cold water apartment submetering, Silver Instruments recommends a brass body volumetric water meter with a sealed register and a pulse reed switch. A pulse output of 1 liter per pulse works with most remote reading units. For a larger villa or small commercial line, a DN25 multijet meter or
For hot water submetering up to 90 degrees Celsius, specify a high temperature register and a brass or composite body. Silver Instruments supplies hot water versions with the same pulse, M-Bus, or RS485 Modbus output. If the building already has Modbus RTU energy meters, we can match the communication settings and register map.
Field Example from Vietnam
A contractor in Ho Chi Minh City needed 120 domestic flow meters for a new apartment block. Pipe size was DN15, inlet pressure was 6 bar, and the expected flow rate was 0.05 to 2.5 cubic meters per hour. Silver Instruments supplied pulse output volumetric meters with 1 liter per pulse and wired them to a central RS485 Modbus RTU data logger. The building management team now reads all meters from one cabinet. Billing complaints dropped from 12 percent of tenants to under 2 percent within four months.
Questions and Answers
What does residential utility submetering mean? It means each unit in a multi unit building has its own meter. The reading from the main volumetric dial is used for individual water bills.
Can the main volumetric dial be read remotely? The mechanical dial is for local reading. For remote reading, select a meter with a built in pulse output, M-Bus, or RS485 Modbus. The signal copies the totalized volume to a logger or head end system.
What is the minimum flow a DN15 domestic flow meter can detect? A good volumetric meter starts measuring from about 0.03 cubic meters per hour. Some models detect dripping flows as low as 2 liters per hour. This matters for leak detection and fair billing.
What output signals does Silver Instruments provide? Common outputs are 1 liter per pulse, 10 liters per pulse, M-Bus, RS485 Modbus RTU, and 4-20 mA. Power supply can be battery, 24 V DC, or 230 V AC depending on the totalizer and communication module.
What information do you need for a quotation? Send us the pipe size in DN, the fluid type, water temperature in degrees Celsius, inlet pressure in bar, normal and minimum flow rate in cubic meters per hour, required output signal, and the total quantity.
How to Request a Specific Quote
Send us your pipe size in DN, pressure in bar, temperature in degrees Celsius, flow range in cubic meters per hour, output signal, and total quantity. You can reach Silver Automation Instruments by phone at +86-135-1213-1526, by WhatsApp at 86-135-12131526, or by WeChat at +86 13512131526. Our engineers can confirm the right model, pulse constant, and lead time for your project.
For more technical data, visit flow-meter.com.au or contact our export team. We supply residential submetering packages and industrial flow meters to contractors and distributors in Vietnam, Indonesia, Saudi Arabia, Australia, Nigeria, and Chile.