The Omnimeter I v.3 can meter nearly any electrical system that is commonly used around the world.  It can operate on 50 or 60 Hz, 120 to 480 volts, 1-phase or 3-phase,  it is accurate to 0.5%, and can meter up to 5000 amp systems. There is not an electrical system in common use that this meter will not support - except 3 phase 3 wire (no neutral) over 415 volts specifically.  Here it is on our website: EKM-Omnimeter I v.3 


We have received accuracy certification from the California Department of Weights and Measures for revenue grade metering, also known as California Type Approval. This is an accuracy standard that many other states look to for their revenue grade requirements. Here is the certificate: EKM California Type Approval


The Omnimeters are powered by the system they are metering.  kWh data will be retained in the meter, even if it loses power for up to 10 years.


Here is the OmniMeter Spec Sheet.



This meter uses external Current Transformers (CTs) and will not function properly without them.  These are sold separately on our website.  The CTs measure the electrical current in the wires being measured. Which CTs are right for you will be determined by your type of electrical system, the maximum Amperage of your system, and the diameter of the wires being read. Solid-core CTs are less expensive but are a bit more difficult to install, they require that you disconnect or cut the wires being read and slip the CT over the wire. Split-Core CTs are more expensive but they simply clamp around the wires being read, making them much easier to install.

  • Use 1 CT for single phase 2-wire systems (one hot and one neutral, with or without ground).  
  • Use 2 CTs for a 120/240V three-wire system (two hots and a neutral, with or without ground).
  • Use 2 CTs for 3-phase 3-wire systems.  (without neutral, up to 415V)
  • Use 3 CTs for 3-phase 4-wire systems. (with neutral, up to 480V)


We have CTs that can meter up to 5000 amps in stock. The CT ratio is selectable inside the meter. Here is our selection of Current Transformers.  


You can read the face of the meter, or set it up to be read with your computer. The remote read is a simple RS-485, 2 wire system which can then be connected to one of our communication devices that will enable you to read your meters over the internet from anywhere in the world. Here are some of our options:

We highly recommend our cloud-based meter communication system, the EKM Push — if you have internet access. The EKM Push works in conjunction with our Omnimeters by handling all of the meter communication, parsing the meter data, and inserting the reads into our cloud database. This completely eliminates all of the configuration issues of firewalls, dynamic IP, and having a computer running all the time to make the communications happen. Data is available seamlessly and immediately from your EKM Push account.  The entire system has been designed to be a robust, scalable, metering system, with an easy plug-and-play installation with FREE access to your meter data.

Here is our Widget displaying live EKM Push Data:  http://widget.ekmmetering.com/EKM2/?reads=100&key=MTAxMDoyMDIw&meter=10068

The Widget is quick and easy but our main software product for EKM Push users is Encompass.io.


You can also just wire the meter directly to your computer on site using our USB converter.


You can wirelessly bridge the hardwired RS-485 network at any point using our 485Bee wireless mesh. This would be between multiple meters or between a meter and any of the communication converters mentioned above.


You can also view and log meter data using our EKM Dash software (PC, Mac, Linux). You can even download a free 30-day trial from our website at the bottom of the Dash product page here: EKM Dash


ORDER HERE: We have also assembled a number of customizable Metering Packages to help our customers determine which combination of products are right for their needs.  Check out all of our Packages here: Metering Packages

How to install an Omnimeter (v.4 in this case but v.3 Omnimeters are installed in a similar way):