Before operating, two 1.5V (type LR-44 or AG-13) button cell
batteries (included) should be installed into the unit.
Unplug the unit from the outlet
Put the two batteries into the compartment while observing
the correct polarities as shown on the battery compartment.
Place the cover back onto the unit.
The two batteries serve to backup the readings and electricity
rate in case of power failure or when the unit is unplugged from
the outlet.
Note: If you have to leave the unit unplugged for a long period
of time (more than a month), the batteries should be
removed in order to conserve battery consumption.
About the PM300
PM300 is a power meter that allows you measure the energy
consumption of electrical appliance, and by entering the
electricity rate, to calculate the total cost of an appliance's power
consumption. It also detects the overload condition and usage
information. To fully utilize the function of the power meter,
please read the rest of the manual.
Quick User Guide
MEASUREMENT
!Press A(UP) key to select Voltage , Amp, Max AMP, Watt ,
Max Watt and Overload Display
!Press B(DOWN) key to select KWh, Total Cost and Price
SET PRICE
!Press B(DOWN) key to select Price display Mode
!Press D(PRICE SET) key to enter Price Setting Mode
!Use A(UP) or B(DOWN) key to adjust price and press
D(PRICE SET) key to confirm
SET OVERLOAD WARNING
!Press A (UP) key to select Overload Display Mode
!Press C (Overload Set) key to enter Overload Setting Mode
!Press A(UP) or B(DOWN) key to select desired W or A
!Press C (Overload Set) key to enter to Value Setting Mode
!Use A(UP) or B(DOWN) to adjust to desired value of Over
Load Watt or Amp and press C(OVERLOAD SET) key to
confirm
CLEAR MAX LOAD
!Press and hold A (UP) & C(OVERLOAD SET) key for 3
seconds to clear the Max Load readings and buzzer beep
CLEAR USAGE READING
!Press and hold B (DOWN) & D(PRICE SET) key for 3
seconds to clear "usage time " and "KWh" reading , buzzer
beep
Fig.5
Fig.6
Fig.7
Fig.8
MAX
A
KWh
A
KWh
6. Overload setting Mode
In this mode, "OVERLOAD" symbol is lighted ON. The
default setting of "overload wattage" is 0 W. Press
OVERLOAD key, the symbol "W" flash means "overload
wattage" is selected. Press UP or DOWN key to toggle
between "W" and "A". Flash "A" means "overload current" is
selected. Press OVERLOAD key again, the first digit
flash,use UP key or DOWN key to set the desired value of
the first digit. Press OVERLOAD key to select next digit,
and so on.
Press and hold the UP key and OVERLOAD together for about
3 seconds, all MAX reading will be clear to zero.
MID PANE
Press the "DOWN KEY" key to view each of the following 3
mode's status. All of these information are displayed on the
middle pane.
4. Wattage Mode
In this mode, real power (in Watt). The calculation of the
power consumed by the load, in watt, is resulted from
multiplying the voltage, current and power factor (power =
voltage x current x power factor). The resolution of power
consumed is 1 watt. Press UP key will go to MAX. Wattage
mode.
5. MAX. Wattage Mode
In this mode, the maximum wattage is displayed. This
reading will be held until another higher reading is captured
and save as the new Max. Wattage.
1. Volt Mode
Line voltage (in V) is displayed on the top pane. Press UP
key will go to Current Mode.
2. Current Mode
In this mode, present current (in A) drawn by the load is
displayed. Press UP key will go to MAX. Current mode.
3. MAX. Current Mode
In this mode, the maximum current is displayed.This reading
will be held until another higher reading is captured and
save as the new Max. current.
Current
Mode
Max
Current
Mode
Wattage
Mode
Max
Watt
Mode
Overload
Setting
Line
Voltage
Mode
Fig.1
Fig.3
Fig.4
Fig.2
Total
energy
KWH
Total
Cost
Price
per
KWH
Total
energy
KWH
PM-300 POWER METER
USER MANUAL
LCD Display
1. KWh Mode
This mode displays the total accumulated energy used by
the appliance (in KWh) from the start of measurement. The
resolution is 0.01 KWh and the maximum is 9999.99KWh.
Press DOWN key will go to Total Cost mode.
2. Total Cost mode
The accumulative energy cost used by the load is
calculated. When the cost is over $999.999, there will be no
decimal place, so the total cost can be shown up to
$999999. The total cost is based on the price set in
Price/KWh mode.
Press DOWN key go to Price/ KWh mode.
3. Price/ KWh mode
In this mode the price per KWh is displayed and set. The
rate set here will affect "cost of the energy used".
LCD
Display
Panel
UP Key
Battery
Cover
Down Key
Overload Set
Price Set
Socket
Line
Voltage
Mode
MAX
V
A
W
KWh
PM
$
DM
TOTAL
PRICE/KWh
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