Wi-LEM is a cost-effective, easy-to-deploy wireless sub-metering system that enables multiple metering points to be setup and monitored without the need for communications infrastructure or the involvement of IT technicians.
There are three components to the Wi-LEM network.
1. The energy meter - a wireless sub-meter that attaches to the circuit being monitored
2. The mesh gate - receives power metering data from multiple metering points
3. The mesh node - at the 'end of the line', the node is the point of data aggregation and network management. It also enables metering data to be distributed over MODBUS 485.
 The Wi-LEM Energy Meter
The Energy Meter is DIN rail mounted, line-powered wireless energy transducer/meter.
Simply mount the energy meter on a DIN rail in the cabinet where the circuit is to be monitored, attach the current transformers, and connect the voltage. The energy meter will instantly power up.
Once powered up, the Wi-LEM energy meter will begin to communicate with the nearest Mesh Node, identify itself on the wireless network and begin transmitting power consumption data.
Wi-LEM energy meters use split-core or flexible current transformers to feed current readings to the energy meter. There is no need to to disconnect the conductor you are monitoring. This simplifies installation and eliminates costly disconnects and downtime.
Wi-LEM energy meters are available for one (1) single phase circuit, three (3) single phase circuits, one (1) dual phase circuit, or one (1) three phase wye circuit or one (1) three phase delta circuit.
 The Wi-LEM Mesh Gate
The Mesh Gate is an communications hub that receives the wireless power metering data from multiple energy meters and relays it further along the chain to the ultimate destination - the Wi-LEM Mesh Node.
Wi-LEM Mesh Gates are capable of relaying metering data from energy meters that are communicating with other Mesh Gates as well as the meters that are communicating directly.
 The Wi-LEM Mesh Node
The Mesh Node is the 'end of the line' destination for power metering data relayed through the Wi-LEM network. It aggregates wireless communications signals from all energy meters attached to the network and stores them in memory. From there, data can be accessed by polling MODBUS registers via RS-485.
If connected to a Windows PC, the Mesh Node can also upload data on a scheduled basis in a CSV format to the PC or the PC can download power data and display it in the Windows software (EMN Monitor). Connection to a PC is via RS232. Optional RS232 to USB adapters are also available.
Ordering & Pricing
In order to obtain an accurate quote, please call us toll free on 1-877-766-5412 to discuss your requirements. Generally, the price per metering point depends on the current transformers required and the number of metering points. The range is approx $300 to $600 USD per metering point, not including any Mesh gates or a Mesh Node.More Information
 See the Wi-LEM wireless submetering system Brochure
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