Introduction to new product - 130A Power Meter and Analyzer.
We have noticed the demand for inline accurate testing of voltage and current with
a data log. This can be used for the most simple tasks.
Getting the best output from a solar panel. (following the sun)
Testing power requirements for camp sites. (totals for 24 hours, etc)
Testing fridge performance.
Testing batteries, chargers, alternators, isolators basically anything that can be
For this sample test and most other tests we find using Anderson plugs the best and
easy option to simply place the Power Meter anywhere you wish.
Here we are testing a pre-cooled fridge to see its power use over a given time. The
aim is to see how many amp hours are used on average with this particular fridge
mounted in place in a Prado running off a 12V dual battery system. Test conditions
are: Ambient 34degC. Fridge 55L. Setting -5degC.
Note: When using these units in fixed positions or hard wired they still need a disconnect
for resetting data or error log. If using in a fixed position use a fuse, trip switch,
master switch or Anderson plugs for this purpose.
We have some great new products on the way.
We are using a unit fitted with Anderson type plugs as we have Anderson plugs fitted
to our fridge.
On power up we only have a voltage reading, all other values are zero.
As the fridge compressor starts we see the voltage drop slightly and the amp draw
of the fridge,
we also see the power value as watts. Note that the timer only counts when the current
greater than 1A so a watch should be used to measure total time. The timer will only
show how many
hours the fridge has actually run.
After 5 hours on this test the timer is showing 2.5 hours fridge run time. The fridge
is using a total of
8.615 amp hours for the 5 hour midday test. If we take this value we know the fridges
average of 1.72 amps per hour and we can calculate battery requirements or solar
requirements etc using these values.
Summary: This particular fridge averages 1.75 amps per hour over a 24 hour period
Our test and the figures show close to this this. (We did not open the fridge during
Note: Due to time constraints we could not perform a 24 hour test which would have
To return to the main HOME page click on this logo.