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Hybrid digital woltmann water meter (MID Approved)
Industry type:Home, construction materials and hardware
Product model number:WT
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Hybrid digital Woltmann water meter(WT), the 1st bulk meter from Taiwan to be approved by OIML R49 and ISO 4064 standards and receive MID certificate from EU, is designed to be installed in the water supply network for bulk users billing applications. The high-performance measuring components, metrological R200 performance, LCD panel, build-in 10 years battery and IP 68 to fit all harsh environments.
Equipped with edge-computing capabilities, WT bulk meter can calculate net totalizer, static days, operation days, leakage days and leakage events, high-flow events to analyze consumption patterns and tamper events. All flow data and events can be transmitted by IoT datalogger back to cloud-based software systems to complete AMR systems. The IoT metering technology not only replaces manual reading, but analyze user consumption patterns and reduce NRW.
The installation of the WT has been ranked 1st place in Taiwan and exported to ASEAN countries, South Africa and Kenya successfully.


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Founded in 1991, Energy Management System Company (EMS) is a dedicated smart water metering solutions provider based in Southern Taiwan Science Park, Taiwan. The smart water network solutions have been developed and installed for more than 90% of the water supply networks in Taiwan. From smart water meters (hardware) to the software (water supply monitoring platform), all have been designed and developed by EMS company in Taiwan.
Our innovative smart water management solutions have received various recognitions, such as “EU Smart Water Meter Applications” in 2011, “USA Pittsburgh INPEX Awards” in 2013, and “Taiwan Excellence” for 7 years.
From the past decade, due to climate changes, raining and typhoon seasons have occurred unexpectedly. We hope to bring the importance of the water awareness to the water utilities, industrial and commercial sectors. Implementing “TAIWAN WATER METER & SMART WATER MANAGEMENT” is our goal and promote Taiwan Water Technology on the world stage.


The founder of EMS, Mr. Ma Chuan, has attended AWWA annual meeting in 1989 and attracted by the advanced electronic water meter due to its accurate measurement and smart functions from the exhibition. At that time, water shortage is a big challenge in Taiwan. If we have Taiwan-made electronic water meter, Mr. Ma believe we can find out leakage effectively and reduce water loss.
In 1991, EMS has been created from a group of engineers. In 1993, the 1st Taiwan-made electronic water meter has been released on the market. People always said that the history of EMS company just like the historical development of the Taiwan electronic water meter.
EMS dedicated to developing smart water meter, IoT dataloggers and software systems as the total solutions for our customers from water utilities, industrial and commercial applications. Not only in Taiwan, but also from Vietnam, Thailand, Indonesia and South Africa, we have successfully installed our smart water metering solutions.

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