EM338 electronic energy meter OWNER’S MANUAL EM338 is an energy meter that allows you to measure the amount of electricity used by An appliance. Ideal for use with large appliances like refrigerators, air conditioners and office machines. It enables you to enter the electricity price per Kilowatt Hour (KWh) to calculate the total cost of an appliance's power consumption, and to monitor the electricity usage. It also detects energy overloads and records the maximum amperage and wattage.
TABLE OF CONTENTS Batteries......................................................................................................3 LCD Display and Buttons ...........................................................................4 Clock Setting ..............................................................................................5 Energy monitor...........................................................................................6 Overload ......................................................
BATTERIES Your new energy meter comes with two button cell batteries already installed. To begin operation, you must first remove the ribbon from the battery compartment located at the back of the unit. 1 Carefully pull out the ribbon from the battery compartment; this will activate the batteries. Make sure the batteries are inserted properly. 1 To replace batteries that are worn out, remove the battery cover. Ensure the two button cell batteries are properly in place, then replace the battery cover.
LCD DISPLAY AND BUTTONS Top Pane Clock Display (12 hour clock only) Middle Pane Energy monitor display OVERLOAD indicator V - Volt (Line Voltage) A - Ampere (Load current) W - Watt (Power / Wattage) MAX A - Maximum recorded Amperage MAX W - Maximum recorded Wattage $ Bottom Pane Price / Cost Display KWh - Kilowatt Hours TOTAL - Total cost in dollars TIME - Usage (total on time) PRICE/KWh - Energy Price /Kwh Buttons (UP) - increases values in setting modes (DOWN) - decreases values in setting modes displa
CLOCK SETTING The clock can be set at any point, except for when the middle pane displays OVERLOAD or the bottom pane displays PRICE per KWh. SET THE CLOCK: - Press PRICE (the hour digit will flash) - Press or to set the hour. - Press PRICE (the minute digit will flash) - Press or to set the minute. - Press PRICE again to confirm, this will exit the clock setting mode (Note: If no key is pressed for 1 minute the set clock mode will end automatically.
ENERGY MONITOR Press the button to scroll through the energy readings displayed in the middle portion of the LCD screen. The voltage display indicates how many volts are available from your wall socket (usually 120V). The wattage and amperage readings display the energy presently being used by the appliance. The maximum amperage and maximum wattage readings display the highest recorded readings.
OVERLOAD The overload warning allows the user to detect an increase or an overuse of electrical current to their appliance. Any electrical device is tested and rated for an electrical current and power threshold . Setting the overload value on the energy meter to the maximum rating on your appliance will enable the overload alarm in the event of a power surge or overdraw by the appliance. ATTENTION: This energy meter is NOT a surge protector.
SET OVERLOAD ENTER THE OVERLOAD VALUE 1) Press until the OVERLOAD symbol displays. 2) Press PRICE 3) Press or to toggle between wattage or amperage mode. (a flashing W symbol indicates “Overload Wattage” setting mode) (a flashing A symbol indicates “Overload Amperage” setting mode) 4) Press PRICE to select the first digit (the first digit will flash) 5) Press or to modify the first digit 6) Press PRICE again to select the next digit (the next digit will flash) etc.
ENERGY USAGE AND COST This energy meter calculates the total energy costs of the appliance plugged into the unit, by multiplying the total KWh used with the electricity price per Kilowatt. The user must manually enter the price per Kilowatt-hour, charged by their local power compagy. Press the OVERLOAD button to scroll through the readings on the bottom pane of the screen.
TOTAL ENERGY CONSUMED (KWh) This displays the total accumulated energy use of the appliance in KWh. 1 Kilowatt hour (KWh)= 1000 watts x 1 hour or 1000 watts of power used over the period of one hour. Example of the total Kilowatt hours: For example, if you had used 38.
TOTAL USAGE (ON TIME) This display the total accumulated usage(on time)of the appliance. - The total time that the appliance plugged into the meter is turned on, is in Hour/Minute/Seconds. - Minimum increments are 1 second for total time less than 100 hours. - When the time reaches 99:59:59, the format will switch to Hour/Minute and the Maximum is 9999:59. - Minimum increments are 1 minute for total time on more than 100 hours.
SET THE ENERGY PRICE PER KWh The price per KWh is listed on the electricity bill and must be entered manually by the user. SETTING RANGE - The price setting range is from $0.001/KWh to 999.999/KWh - The price/KWh reading increases in increments of $0.
TOTAL ENERGY COST ($) This displays the amount of money it has cost you to run your appliance. The accumulated energy cost is calculated by multiplying the total KWh, used by the energy price per KWh. The total cost can be shown up to $9999.99. The total cost is based on the price set in Price/KWh mode and will change automatically if the user changes the Price/KWh. Example of the total $ energy cost: $85.
TROUBLESHOOTING Problem Solution The display is blank or dim when the energy meter is unplugged from the outlet. Replace old batteries with fresh batteries. Battery type = button-cell (AG13 or LR44) If the energy meter shows an abnormal display or if the buttons no longer function (i.e. unit becomes “frozen”) Remove the batteries for 3 minutes and then reinsert them to return the unit to normal function. The energy meter should resume normal function but please note that all settings will be lost.
TECHNICAL SPECIFICATIONS Operating Voltage Maximum Load Voltage Display Current Display Current Resolution Power Resolution Wattage (in Watt) KWh Display (in KWh) Batteries 120V ~ 60Hz 1800W / 15A 90V - 140V Up to 15A 0.01A 1W Up to 1800W 0.00KWh - 9999.
LIMITED ONE-YEAR WARRANTY This product is warranted, excluding battery, to be free from defects in the materials or workmanship, under normal use and service, for a period of one (1) year from the date of purchase by the consumer. If the product is defective, return it, with a dated proof of purchase, to the retailer from which you purchased it. This warranty shall not apply if the defect or malfunction was caused by damage which occurred while the product was in the possession of the consumer.
