|  | PM230 kwh Power Meters explained |  |
This section provides a summary of the functions available from the Watt and Current Meter that can be found in the Store Section "Energy Metering and Controls".
The unit has seven modes of operation that can be selected using the Function Button. When first connected to the AC supply the unit shows the date, day and time; this can be set using the Set and Change buttons. Maximum current is 13A, 220-250v AC that can be drawn by an electrical appliance, which will cover most UK electrical appliances fitted with a standard 13 Amp plug and protected with a 13 Amp fuse.
..........Mode 1: Voltage display
This display shows the voltage (V) and frequency (Hz) being supplied to the appliance.
This mode will indicate whether your utility supplier is trying to sell you more electricity than you need.
..........Mode 2: Amps display
The load current (A) and the power factor being drawn by the appliance are displayed.
If you have a limited supply (e.g. caravan site or marina) then this function can assist in deciding which appliances can be switched on.
..........Mode 3: Watts display
The real power being drawn by the appliance whilst in operation is displayed in Watts.
This mode can be helpful in checking appliances for efficiency.
The wattage mode has two subsidiary displays which can be useful. By pressing the 2-Price button the maximum wattage recorded is displayed and by pressing the 2-Price button display again, the date and time at which the maximum reading was recorded is displayed.
..........Mode 4: Operating Duration
The display shows the cumulative time that the connected appliance has been switched on and drawing current.
This mode provides helpful information about just how often a particular appliance is in operation.
..........Mode5. kWh display
The cumulative total electricity consumption of the connected appliance in kWh is displayed.
This is basis upon which electricity suppliers charge and represents the amount of active or real power that is drawn by the appliance measured in '000 watts per hour of use.
If you have a supply tariff that offers two rates for peak and off-peak use then the meter will allow you to monitor the cost effects of operating the appliance in the two periods. The kWh mode has two subsidiary displays that can be found by pressing the 2-Price button. The first display shows the total amount of electricity consumed (kWh) at the regular price (r) and second, the electricity consumed at the reduced price (d).
..........Mode 6: Cost
This mode shows the total cost of the electricity consumed by the appliance ($). The $ sign is shown to indicate a monetary value and is factory set, regardless of tariff currency.
..........Mode 7: Electricity price per kWh
In this mode, the electricity price per kWh is set and displayed. The price input here affects the total cost calculation shown in Mode 6.
If your supplier offers a two-price tariff then the relevant rates and applicable times can be set under this mode.
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