Web Enabled Energy Meter for Submetering and Tracking, kWh Meter, Power Measurement, Energy Management, Load Profile, Billing

Internet Enabled Energy Meter Specifications:

Our Web Enabled Meter is a revenue grade C12.20 compliant meter (0.2% higher accuracy) that integrates highly accurate electric metering and measurement and a sophisticated network module which enables an Internet based advanced metering solution. Our IP enabled electric meter uses the latest technology to deliver unrivaled benefits. Our meters are calibrated using the RFL 5800 which is certified to NIST standards and is calibrated periodically to ensure the highest accuracy of our meters. Our web enabled meter is also UL Listed for both USA and Canada. The WEM-MX (-5A and -333mV) comply with US FCC regulations and has also passed the European EMC testing and certification and is ROHS compliant.

TÜV Rheinland of North America, a world leader in compliance testing and certification has independently validated that the WEM-MX meter complies with the advanced requirements of ANSI C12.20 Class 0.2 (0.2% accuracy) and Watt Hour Accuracy Testing.
Internet Features

This smart electric meter has been designed to work over any Internet, LAN or WAN connection. Using any Internet browser, users have instant access to the advanced features of this IP electric meter through its built-in web server.

Any ethernet connection will work with the electric meter. Network firewall restrictions that too often limit Internet devices are easily overcome using the email, FTP, or Web Service built into the electric meter's software. Sometimes providing a dedicated external IP address is not possible. This may prevent access to its web server from outside the local network. In such a case, the IP electric meter can be setup to periodically send email reports and/or update load profile data to any FTP server or via Web Services. Communicating with multiple IP electric meters is as simple as connecting them to a TCP/IP network.

Download meter specification (pdf) WEM-MX Specifications
ANSI Compliant Open Protocols
Revenue grade energy meter is accurate to within 0.2% Our goal at Energy Tracking is to facilitate open access to meter data without the need for proprietary protocols.
ANSI C12.20 Ready for Future Enhancements
  This advanced electric meter’s firmware can be upgraded to implement new features.

Measurement Features

This advanced electric meter incorporates all of the power measurements one would expect in an advanced solid state energy meter.

This versatile four quadrant electric meter measures phase voltage, amps, frequency, true power, reactive power, apparent power and power factor. In addition, peak demand and summation data supports typical time-of-use tariff.

The WEM-MX 5A meter model accepts external CT's with a 5 Amp secondary. The WEM-MX-333mV meter model accepts 333mV secondary CT's. Note: Voltage ratings are line-to-line.
Voltage Frequency Current Input Accuracy
120 to 600VAC 47Hz to 63Hz 0-5A / (333mV option) ±0.2% at unity power factor
      ±0.5% at 0.5 power factor
Temperature Power Interval Data Demands
-25 °C to 60 ° C kW kWh peak
(Consult factory for -40° C to 85° C.) kVAR kVARh  
  kVA (Delivered & Received) cumulative
DHCP Client HTTP Server Email SMTP Client FTP Server
DNS Client Time Zones Ethernet 10/100 Base T FTP Client
SNTP Day Time Client Web Server Static IP
Application Modules:
Load Profile Load profile intervals can be setup to record energy consumption from every 1 minute to 60 minutes. This feature can be disabled if not required.
Email Client Emails can be dispatched at the end of every load profile interval or periodically over hours. In addition, the meter can be setup to send a report monthly, weekly or daily on energy consumption and demand data. Each mail includes a report of the current demand, voltage, amps and power factor by phase.
FTP Client The FTP module operates similar to the email module and is designed to provide load profile data with a summary of current consumption and demand data. Each FTP file includes a report of the current demand, voltage, amps and power factor by phase.
Web Server Energy consumption, demand and load profile data can be accessed directly using the on board web server. The web server also allows you to configure mail, FTP, CT / PT ratios, Meter ID details, etc.
DHCP The meter can be setup to automatically acquire a leased IP address from a DHCP server or be set to a fixed IP address.
SNTP The meter will automatically acquire the latest time from any SNTP server. Default SNTP severs are provided but the user has the option to change them. This setup is done via the web server. The SNTP server can be an Internet or local SNTP server.
FTP Server The meter has a FTP server which is used to update new firmware released by Energy Tracking.
Web Services The meter has the ability to report data directly using Web Service over HTTP.
ModBus TCP You can poll the meter directly using the ModBus protocol over HTTP.

Power Supply

External Power Supply. Input 100 to 240 VAC. Output 9VDC. Supply current 300 mA typical.
Backup Power Supply

Rechargeable Lithium ion. Charging circuit built-in.
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