Product category:
Gauges, Indicators and Instruments
News Release from: Carlo Gavazzi | Subject: EM21-72D
Edited by the Engineeringtalk Editorial
Team on 22 April 2008
Compact energy meter adapts to
application
The self-powered meter features Easyprog simplified programming and automatic adaptation of the display to the selected application.
Carlo Gavazzi has released the world's first compact three-phase energy meter with a multiapplication detachable display and dual mounting technology The new EM21-72D can be used either as a basic energy meter or multifunction meter and brings both simplicity and compactness to building management systems and cost-allocation applications
This article was originally published on Engineeringtalk on 1 Mar 2001 at 8.00am (UK)
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The MID compliant EM21 is quick and easy to install and occupies just 72 x 72mm on panel doors or four DIN units on the rail.
The self-powered meter features Easyprog simplified programming and automatic adaptation of the display to the selected application.
Carlo Gavazzi's detachable display, requires no batteries or electrical connections, it is simply plugged into the base unit via one of the two possible slots.
The LCD gives a visual warning if an incorrect phase sequence is detected.
Seven sets of three variables can be selected for display, providing for active and reactive energy measurement or a complete set of variables.
Options include system variables such as W, var, PF, Hz and phase-sequence; single-phase variables including A, VLL, VLN, PF; TRMS measurements of distorted sine waves; and energy measurements (total kWh and kvarh).
As standard, an OPTOMOSFET pulse output provides fast and easy data transmission to PCs and PLCs for energy monitoring, while all electrical parameters of the installation can be sent via the optional RS-485 port for integration with BMS (building management systems) and other standard acquisition-monitoring systems.
Instantaneous variables are displayed as 3 x 3 digits, with energy meter readings to 6+1 digit resolution.
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