Product overview

EM20 energy monitor use 2.8-inch TFT color LCD, it can monitor the household appliances’ power, power factor, voltage, current, frequency, total electricity consumption, elapsing of time and electricity fees, electricity consumption at one time, elapsing of time and electricity fees at one time. It records electricity consumption and fees every day, you can see the historical data in the form of charts or lists. EM20 energy monitor is suitable for detecting and recording the operation and energy consumption of household, factory, office and other electrical equipment, it can turn on or off the power supply (external relay version only) at a set time

Main characteristics：

 Digital operate and control;  2.8-inch TFT color LCD display;  0.5FS measuring accuracy;  Chinese and English can be set freely;  23 money units can be set;  6 touch buttons for setting;  The date can be set and the time can be set with 5 forms;  Electricity includes total electricity and one-shot electricity, one-shot electricity can be cleared, in order to measure the electricity and cost in some situation;  In working condition, there are 4 main pages for choosing: General view, Total Electricity, One-shot Electricity, Realtime Electrical Parameter. The default is General view, user can press”” or”” to switch the different pages;  It records automatically the history data of electricity: elapsing of time, electricity consumption and electricity fees by list or chart, it can store the data for more than 30 years;  Electricity tariff support 4 decimals, the decimal point can be set to 0 between 4. It supports 3 charges: simple tariff, time-sharing tariff and stage tariff. Time-sharing tariff support 8 time periods to calculate the cost, which can be used for peak and valley billing. Stage tariff support 8 stages power rates. You can set the date that begin to charge the stage billing  It has the function of alarm, you can set values for voltage, current, or power. If they were exceeded, the monitor will alarm automatically;  Energy-saving setting: you can set that the screen will be closed without any action in 1minute, 5 minutes, or 10 minutes, or the screen can be set not to be closed. Even if the screen was closed, which not influence the monitor’s measuring. If any button is touched, the screen will be opened again;  It has the function of clearing the total electricity, history data and factory reset;  The power resolution can be switched automatically. When the power <1000W, it has one decimal, the unit is W; When the power <10kW, it has 3 decimals; the unit is KW; When the power >10kW, it has 2 decimals, the unit is KW;  If the measured is overrange, it will show “High” on the screen;  It supports 1000:1 or 2000:1 current transformer, the max current of the transformer is 120A;  Mounting box type 86 is used. Note 1: Only external relay version has this function.

Function list

●has the function (EM20, this item )  

Technical Index

Note: [1]. Voltage and Current are True RMS value.

[2]. Power is active power.

[3]. When the power <1000W, the resolution is 0.1W, when the power >=1kW, the resolution is 0.001kW, when the power >10kW, the resolution is 0.01kW;

[4].When the electricity fee <10000, the resolution is 0.01, the measuring accuracy is ±(0.5FS+0.01), when the electricity fee >=10000, the resolution is 0.1, the measuring accuracy is ±(0.5FS+0.1), when the electricity fee >100000, the resolution is 1, the measuring accuracy is ±(0.5FS+1);

[5]. The resolution of energy is auto adjusted by the measuring result , the maximum resolution is 0.0001.

[6]. For 120A current transformer, only ratio of 2000:1 is supported.

The currencies of electricity fee

Supported current transformer

Supported magnetic latching relay and electrical parameters (only for external relay version)

Other indexes