Whattmeter - Details

Whattmeter



TL-PWRMTR	$51.95

The "Whattmeter" takes the guesswork out of electric power. Look at what this precision measuring instrument can do for you. Battery discharge current draw up to 70 Amps (Short durations). Battery charging current up to 10 Amps. Battery voltage up to 60 Volts. Input power up to 4,000 Watts. Battery capacity up to 96 amp hours

The "Whattmeter" is a very sophisticated piece of electronic equipment. It contains three digital micro-processors, a 4.096 volt precision reference, five volt power supply and a precision amplifier. The meter contains no battery. It is powered from the voltage source and absorbs about 3 milliamps. The meter will turn on at 4.5 volts and will measure any DC voltage up to 60 volts. The "Whattmeter" micro-processor goes through a self calibration routine every time voltage is applied. This routine takes about 1 second. Wait for the voltage display before connecting the load. This way you will have a very accurate current measurement. If the load is connected before the source of power is connected the current measurement may have up to a 1 amp error. To measure current and power, first connect the "Whattmeter" SOURCE LEADS to the battery or power supply. The meter display should light up and indicate the Source voltage. Then connect the load to be tested to the LOAD LEADS. This set up can also be used to measure battery capacity. The arrow on the display indicates direction of current flow.
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