How The Product Works; Overview - 2 Save Energy CM113 User Manual

Overview

This product uses 'phase' current transformer sensing technology to detect and monitor a magnetic field around
your household electricity power cable. It measures the amps being used and, by reference to the system volt-
age, calculates the amount of power being used, the cost, and the amount of greenhouse gas emissions. It
then transmits this information from the Sender Box to a cordless Remote Monitor on a frequency of 433MHz,
from up to 30 meters away (unbroken transmission).
NOTE The product is primarily intended as an educational device to aid understanding of the cost of
operating electrical appliances in the home. As such, it is not intended to replace your accurate electricity
revenue meter, so it cannot be used to check your electricity account.
Voltage and Current
Voltage (volt) is the measure of electrical potential. Current signifies the amount of electricity flowing through a
conductive material, such as a wire. Electrical current is measured in amperes or "amps" for short. Both Amps
and Volts are necessary to provide electricity for your household appliances. Power is measured in Watts, and
is the product of Volts times Amps. For a particular location, the voltage is usually constant – so the amount of
power used is directly proportional to the current used.
Watts and Kilowatts
Refer to the following table:
Watts
A Watt is the standard unit of
measurement for the amount
of energy (electric or otherwise)
being transferred to or from
somewhere each second.
NOTE  kWh is the equivalent of ten(0)X00-watt bulbs operating at the same time for one hour.
Household power cable and 'phase'
Most household electricity supplies use either single 'phase' or three 'phase' current. In single 'phase' supplies,
the current flows to and from your household appliances using a 'neutral' and 'power' line. The neutral line has
a voltage close to 0 while the 'power' line carries a fluctuating voltage or 'phase' at about 240 volts. The differ-
ence between these two lines makes the current flow through your appliances.
In three 'phase' supplies, current flows to and from a device through a group of three lines - each one carrying
a fluctuating voltage or 'phase'. The Sensor should be connected to each of the three phase lines before using
the OWL
.
TM
greenhouse gas
Fossil fuel power stations emit gases such as carbon dioxide when producing electricity. This causes an
atmospheric imbalance, which in turn has been linked to global warming (global temperature rise).
Every power station has a slightly different ratio of emissions to electricity production, depending on the type
of fuel used to generate electricity. Sustainable energy sources such as hydro, solar and wind power do not
create any emissions.
The default greenhouse emission rate on the Portable Main Unit is set to  kilogram of greenhouse gas for every
KW of electricity produced (:00). This can be changed depending upon the fuel or energy source used by
your power generating authority (see customized settings).
HOW THE PRODUCT WORKS
Kilowatt (kW)
A Kilowatt (kW) is simply a larger
unit of measurement (000 watts =
one kilowatt).
7
Kilowatts hour (kWh)
Kilowatts hour (kWh) represents the
use of 000 watts of electricity for
one whole hour.